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ggw
2026-04-24 19:51:22 -07:00
commit d853c57c16
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code/l452_code/Core/Src/adc.c
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file adc.c
* @brief This file provides code for the configuration
* of the ADC instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "adc.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
ADC_HandleTypeDef hadc1;
/* ADC1 init function */
void MX_ADC1_Init(void)
{
/* USER CODE BEGIN ADC1_Init 0 */
/* USER CODE END ADC1_Init 0 */
ADC_ChannelConfTypeDef sConfig = {0};
/* USER CODE BEGIN ADC1_Init 1 */
/* USER CODE END ADC1_Init 1 */
/** Common config
*/
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc1.Init.LowPowerAutoWait = DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.DMAContinuousRequests = DISABLE;
hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
hadc1.Init.OversamplingMode = DISABLE;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_16;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC1_Init 2 */
/* USER CODE END ADC1_Init 2 */
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspInit 0 */
/* USER CODE END ADC1_MspInit 0 */
/* ADC1 clock enable */
__HAL_RCC_ADC_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**ADC1 GPIO Configuration
PB1 ------> ADC1_IN16
*/
GPIO_InitStruct.Pin = VBATT_FOR_UC_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG_ADC_CONTROL;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(VBATT_FOR_UC_GPIO_Port, &GPIO_InitStruct);
/* ADC1 interrupt Init */
HAL_NVIC_SetPriority(ADC1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(ADC1_IRQn);
/* USER CODE BEGIN ADC1_MspInit 1 */
/* USER CODE END ADC1_MspInit 1 */
}
}
void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspDeInit 0 */
/* USER CODE END ADC1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_ADC_CLK_DISABLE();
/**ADC1 GPIO Configuration
PB1 ------> ADC1_IN16
*/
HAL_GPIO_DeInit(VBATT_FOR_UC_GPIO_Port, VBATT_FOR_UC_Pin);
/* ADC1 interrupt Deinit */
HAL_NVIC_DisableIRQ(ADC1_IRQn);
/* USER CODE BEGIN ADC1_MspDeInit 1 */
/* USER CODE END ADC1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/ads131.cpp
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#include "ads131.hpp"
#include "gpio.h"
#include <cstring>
#include "packet.hpp"
#include "buff.hpp"
void initialize_ads131(SPI_HandleTypeDef *hspi1) {
uint8_t cmd[6] = {0x00, 0x11, 0x00};
uint8_t rx_buff[18];
HAL_SPI_DeInit(hspi1);
hspi1->Init.CLKPolarity = SPI_POLARITY_LOW;
HAL_SPI_Init(hspi1);
// reset
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, (uint8_t*) cmd, (uint8_t*) rx_buff, 18, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_SET);
HAL_Delay(1);
// set OSR
cmd[0] = 0b01100001;
cmd[1] = 0b10000000;
cmd[2] = 0x00;
cmd[3] = 0b00001111;
cmd[4] = 0b00010111; // change last one to 0 to get 488Hz
cmd[5] = 0x00;
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, (uint8_t*) cmd, (uint8_t*) rx_buff, 18, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_SET);
HAL_Delay(1);
memset(cmd, 0, 6);
// 2 reads so DRDY works
for (int i = 0; i < 2; ++i) {
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, (uint8_t*) cmd, (uint8_t*) rx_buff, 18, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_SET);
}
}
struct packet_ekg p_ekg;
struct packet_strain p_strain;
struct packet_outsideT p_outsideT;
struct packet_insideT p_insideT;
extern volatile uint16_t tim6_reloads;
void read_ads131(SPI_HandleTypeDef *hspi1) {
if (HAL_GPIO_ReadPin(GPIOA, ADC_DRDY_Pin) != GPIO_PIN_RESET) {
return;
}
uint8_t cmd[6] = {0x0};
uint8_t rx_buff[16] = {0x0};
HAL_SPI_DeInit(hspi1);
hspi1->Init.CLKPolarity = SPI_POLARITY_LOW;
HAL_SPI_Init(hspi1);
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, (uint8_t*) cmd, (uint8_t*) rx_buff, 18, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_SET);
//--------------
if (p_ekg.index == 0) {
p_ekg.t.tim6_reloads = tim6_reloads;
p_ekg.t.tim6_value = TIM6->CNT;
}
p_ekg.readings_cnts[p_ekg.index] = (((uint32_t)rx_buff[3]<<16) +
((uint32_t)rx_buff[4]<<8) +
((uint32_t)rx_buff[5]));
if (p_ekg.index == 49) {
write(p_ekg);
p_ekg.index = 0;
} else {
p_ekg.index++;
}
//-------------
if (p_strain.index == 0) {
p_strain.t.tim6_reloads = tim6_reloads;
p_strain.t.tim6_value = TIM6->CNT;
}
p_strain.readings_cnts[p_strain.index / 10] += (((uint32_t)rx_buff[6]<<16) +
((uint32_t)rx_buff[7]<<8) +
((uint32_t)rx_buff[8]));
if (p_strain.index == 49) {
write(p_strain);
p_strain.index = 0;
memset(p_strain.readings_cnts, 0, sizeof(p_strain.readings_cnts));
} else {
p_strain.index++;
}
//-------------
if (p_outsideT.index == 0) {
p_outsideT.t.tim6_reloads = tim6_reloads;
p_outsideT.t.tim6_value = TIM6->CNT;
}
p_outsideT.readings_cnts[p_outsideT.index / 10] += (((uint32_t)rx_buff[9]<<16) +
((uint32_t)rx_buff[10]<<8) +
((uint32_t)rx_buff[11]));
if (p_outsideT.index == 49) {
write(p_outsideT);
p_outsideT.index = 0;
memset(p_outsideT.readings_cnts, 0, sizeof(p_outsideT.readings_cnts));
} else {
p_outsideT.index++;
}
//-------------
if (p_insideT.index == 0) {
p_insideT.t.tim6_reloads = tim6_reloads;
p_insideT.t.tim6_value = TIM6->CNT;
}
p_insideT.readings_cnts[p_insideT.index / 10] += (((uint32_t)rx_buff[12]<<16) +
((uint32_t)rx_buff[13]<<8) +
((uint32_t)rx_buff[14]));
if (p_insideT.index == 49) {
write(p_insideT);
p_insideT.index = 0;
memset(p_insideT.readings_cnts, 0, sizeof(p_insideT.readings_cnts));
} else {
p_insideT.index++;
}
//-------------
}
code/l452_code/Core/Src/buff.cpp
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//#include "buff.hpp"
#include <cstdint>
uint8_t databank1[1024];
uint8_t databank2[1024];
uint16_t pos = 0;
code/l452_code/Core/Src/gpio.c
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file gpio.c
* @brief This file provides code for the configuration
* of all used GPIO pins.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "gpio.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/*----------------------------------------------------------------------------*/
/* Configure GPIO */
/*----------------------------------------------------------------------------*/
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(ADC_CS_GPIO_Port, ADC_CS_Pin, GPIO_PIN_SET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(IMU_CS_GPIO_Port, IMU_CS_Pin, GPIO_PIN_SET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, LED1_Pin|LED2_Pin|LED3_Pin, GPIO_PIN_SET);
/*Configure GPIO pins : IMU_DRDY_Pin PPG_DRDY_Pin */
GPIO_InitStruct.Pin = IMU_DRDY_Pin|PPG_DRDY_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pin : ADC_CS_Pin */
GPIO_InitStruct.Pin = ADC_CS_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(ADC_CS_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : ADC_DRDY_Pin */
GPIO_InitStruct.Pin = ADC_DRDY_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(ADC_DRDY_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : IMU_CS_Pin */
GPIO_InitStruct.Pin = IMU_CS_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(IMU_CS_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : BUTTON2_Pin */
GPIO_InitStruct.Pin = BUTTON2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(BUTTON2_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : BUTTON1_Pin */
GPIO_InitStruct.Pin = BUTTON1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(BUTTON1_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : LED1_Pin LED2_Pin LED3_Pin */
GPIO_InitStruct.Pin = LED1_Pin|LED2_Pin|LED3_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : SD_DETECT_Pin */
GPIO_InitStruct.Pin = SD_DETECT_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(SD_DETECT_GPIO_Port, &GPIO_InitStruct);
/* EXTI interrupt init*/
HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI0_IRQn);
HAL_NVIC_SetPriority(EXTI3_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI3_IRQn);
HAL_NVIC_SetPriority(EXTI9_5_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI9_5_IRQn);
}
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
code/l452_code/Core/Src/i2c.c
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file i2c.c
* @brief This file provides code for the configuration
* of the I2C instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "i2c.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
I2C_HandleTypeDef hi2c1;
/* I2C1 init function */
void MX_I2C1_Init(void)
{
/* USER CODE BEGIN I2C1_Init 0 */
/* USER CODE END I2C1_Init 0 */
/* USER CODE BEGIN I2C1_Init 1 */
/* USER CODE END I2C1_Init 1 */
hi2c1.Instance = I2C1;
hi2c1.Init.Timing = 0x10D19CE4;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
/** Configure Analogue filter
*/
if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
Error_Handler();
}
/** Configure Digital filter
*/
if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN I2C1_Init 2 */
/* USER CODE END I2C1_Init 2 */
}
void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(i2cHandle->Instance==I2C1)
{
/* USER CODE BEGIN I2C1_MspInit 0 */
/* USER CODE END I2C1_MspInit 0 */
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
__HAL_RCC_GPIOA_CLK_ENABLE();
/**I2C1 GPIO Configuration
PA9 ------> I2C1_SCL
PA10 ------> I2C1_SDA
*/
GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* I2C1 clock enable */
__HAL_RCC_I2C1_CLK_ENABLE();
/* I2C1 interrupt Init */
HAL_NVIC_SetPriority(I2C1_EV_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(I2C1_EV_IRQn);
/* USER CODE BEGIN I2C1_MspInit 1 */
/* USER CODE END I2C1_MspInit 1 */
}
}
void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
{
if(i2cHandle->Instance==I2C1)
{
/* USER CODE BEGIN I2C1_MspDeInit 0 */
/* USER CODE END I2C1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_I2C1_CLK_DISABLE();
/**I2C1 GPIO Configuration
PA9 ------> I2C1_SCL
PA10 ------> I2C1_SDA
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9);
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_10);
/* I2C1 interrupt Deinit */
HAL_NVIC_DisableIRQ(I2C1_EV_IRQn);
/* USER CODE BEGIN I2C1_MspDeInit 1 */
/* USER CODE END I2C1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/lsm6dsv.cpp
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#include "lsm6dsv.hpp"
#include "packet.hpp"
#include "gpio.h"
#include "buff.hpp"
extern volatile uint16_t tim6_reloads;
void initialize_lsm6dsv(SPI_HandleTypeDef *hspi1) {
uint8_t tx_buff[8] = {0};
uint8_t rx_buff[8] = {0};
HAL_SPI_DeInit(hspi1);
hspi1->Init.CLKPolarity = SPI_POLARITY_HIGH;
HAL_SPI_Init(hspi1);
// Reset
tx_buff[0] = 0x01;
tx_buff[1] = 0x04;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
HAL_Delay(1);
tx_buff[0] = 0x09; // Set 7.5Hz data rate for fifo
tx_buff[1] = 0b00100010;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
tx_buff[0] = 0x0A; // Set continuous mode for fifo
tx_buff[1] = 0b00000110;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
tx_buff[0] = 0x0D; // Set drdy based on fifo
tx_buff[1] = 0b00111000;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
tx_buff[0] = 0x10; // Set 7.5Hz accelerometer high performance
tx_buff[1] = 0b00000010;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
tx_buff[0] = 0x11; // Set 7.5Hz gyro high performance
tx_buff[1] = 0b00000010;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
// todo: get watermark working
// tx_buff[0] = 0x07; // Set the watermark to 10
// tx_buff[1] = 100;
// HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
// HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 8, HAL_MAX_DELAY);
// HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
}
struct packet_imu p_imu;
void read_lsm6dsv(SPI_HandleTypeDef *hspi1) {
if (HAL_GPIO_ReadPin(GPIOC, IMU_DRDY_Pin) != GPIO_PIN_RESET) {
return;
}
uint8_t tx_buff[8] = {0};
uint8_t rx_buff[8] = {0};
HAL_SPI_DeInit(hspi1);
hspi1->Init.CLKPolarity = SPI_POLARITY_HIGH;
HAL_SPI_Init(hspi1);
tx_buff[0] = 0b10000000 + 0x1B;
tx_buff[1] = 0;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 8, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
// todo: read in batches
if (rx_buff[1] != 0) {
tx_buff[0] = 0b10000000 + 0x78; // FIFO addr
tx_buff[1] = 0;
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 8, HAL_MAX_DELAY);
HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
}
p_imu.t.tim6_reloads = tim6_reloads;
p_imu.t.tim6_value = TIM6->CNT;
p_imu.readings_cnts[0] = rx_buff[1];
p_imu.readings_cnts[1] = ((uint16_t)rx_buff[2] << 8) + rx_buff[3];
p_imu.readings_cnts[2] = ((uint16_t)rx_buff[4] << 8) + rx_buff[5];
p_imu.readings_cnts[3] = ((uint16_t)rx_buff[6] << 8) + rx_buff[7];
write(p_imu);
}
code/l452_code/Core/Src/main.cpp
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "fatfs.h"
#include "i2c.h"
#include "rtc.h"
#include "sdmmc.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "usb_device.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <string.h>
#include <stdio.h>
#include "usbd_cdc_if.h"
#include "packet.hpp"
#include "buff.hpp"
#include "ads131.hpp"
#include "lsm6dsv.hpp"
#include "refl.hpp"
#include <tuple>
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
extern "C" void SystemClock_Config(void);
void PeriphCommonClock_Config(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
volatile bool to_recordVbatt = false;
volatile bool to_recordTime = false;
volatile uint16_t adc_value = 0;
volatile uint8_t adc_ready = 0;
volatile uint16_t tim6_reloads = 0;
volatile bool usb_ready = false;
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc) {
if (hadc->Instance == ADC1) {
adc_value = HAL_ADC_GetValue(hadc);
adc_ready = 1;
}
}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
if (htim->Instance == TIM6) {
tim6_reloads += 1;
to_recordVbatt = true;
to_recordTime = true;
}
}
void USB_CDC_RxHandler(uint8_t* Buf, uint32_t Len) {
if (memcmp(Buf, "R", Len) == 0) {
usb_ready = true;
}
//if (Len == 1) {
// return;
//}
// use with stty -F /dev/ttyACM1 raw -echo
//char buffer[100];
//int i = snprintf(buffer, sizeof(buffer), "Length: %d\n\r", Len);
//
}
REFL_TYPE(packet_imu)
REFL_END
// #include <cstdint>
// template<std::intmax_t N>
// class to_string_t {
// constexpr static auto buflen() noexcept {
// unsigned int len = N > 0 ? 1 : 2;
// for (auto n = N; n; len++, n /= 10);
// return len;
// }
// char buf[buflen()] = {};
// public:
// constexpr to_string_t() noexcept {
// auto ptr = buf + buflen();
// *--ptr = '\0';
// if (N != 0) {
// for (auto n = N; n; n /= 10)
// *--ptr = "0123456789"[(N < 0 ? -1 : 1) * (n % 10)];
// if (N < 0)
// *--ptr = '-';
// } else {
// buf[0] = '0';
// }
// }
// constexpr operator const char *() const { return buf; }
// };
// template<std::intmax_t N>
// constexpr to_string_t<N> to_string;
// // shamelessly stolen from https://stackoverflow.com/questions/6713420/c-convert-integer-to-string-at-compile-time
// auto c = to_string<555>;
//string_writer(c);
packet_imu p;
//auto name = refl::reflect(p).name
// for member in x, we wnat the offset_of
int x = offsetof(packet_imu, readings_cnts);
//const uint8_t[100] str;
//consteval snprintf(str, "%s", 100)
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* Configure the peripherals common clocks */
PeriphCommonClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SDMMC1_SD_Init();
MX_FATFS_Init();
MX_RTC_Init();
MX_I2C1_Init();
MX_SPI1_Init();
MX_ADC1_Init();
MX_TIM2_Init();
MX_USART1_UART_Init();
MX_TIM6_Init();
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
HAL_TIM_Base_Start_IT(&htim6);
initialize_ads131(&hspi1);
initialize_lsm6dsv(&hspi1);
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
// FATFS fs;
// FIL file;
// FRESULT res;
// bool fs_on = false;
// if (BSP_SD_IsDetected() == SD_PRESENT) {
// CDC_Transmit_FS((uint8_t*) "Detected\n\r", 10);
// res = f_mount(&fs, "", 1);
// if (res != FR_OK) {
// char buffer[32];
// int cx;
// cx = snprintf(buffer, 32, "Err: %d\n\r", res);
// CDC_Transmit_FS((uint8_t*)buffer, cx);
// } else if (res == FR_OK) {
// CDC_Transmit_FS((uint8_t*) "Ok\n\r", 8);
// bool fs_on = true;
// // HAL_Delay(10);
// // DIR dir;
// // FILINFO fno;
// // res = f_opendir(&dir, "");
// // if (res != FR_OK) {
// // } else {
// // res = f_readdir(&dir, &fno);
// // if (res != FR_OK || fno.name[0] == 0)
// // }
// // f_open(&file, "")
// f_mount(NULL, "", 0);
// }
// } else {
// CDC_Transmit_FS((uint8_t*) "Not Detected\n\r", 14);
// HAL_Delay(10);
// }
//CDC_Transmit_FS((uint8_t*) name, sizeof(name));
HAL_Delay(1000);
continue;
if (to_recordTime) {
struct timer_time t;
t.tim6_reloads = tim6_reloads;
t.tim6_value = TIM6->CNT;
struct packet_rtc p_rtc;
p_rtc.t = t;
HAL_RTC_GetTime(&hrtc, &p_rtc.sTime, RTC_FORMAT_BCD);
HAL_RTC_GetDate(&hrtc, &p_rtc.sDate, RTC_FORMAT_BCD);
write(p_rtc);
to_recordTime = false;
}
if (to_recordVbatt) {
adc_ready = 0;
HAL_ADC_Start_IT(&hadc1);
to_recordVbatt = false;
}
if (adc_ready) {
adc_ready = 0;
struct timer_time t;
t.tim6_reloads = tim6_reloads;
t.tim6_value = TIM6->CNT;
struct packet_vbatt p_vbatt;
p_vbatt.t = t;
p_vbatt.vbatt_cnts = HAL_ADC_GetValue(&hadc1);
write(p_vbatt);
}
read_ads131(&hspi1);
read_lsm6dsv(&hspi1);
// char buffer[32];
// int cx;
// for (int i = 0; i < 39; ++i) {
// if (i == 38) {
// cx = snprintf(buffer, 32, "%02x\n\r", rxbuff[i]);
// CDC_Transmit_FS((uint8_t*)buffer, cx);
// HAL_Delay(10);
// } else if (i % 3 == 2) {
// cx = snprintf(buffer, 32, " ", rxbuff[i]);
// CDC_Transmit_FS((uint8_t*)buffer, cx);
// HAL_Delay(10);
// } else {
// cx = snprintf(buffer, 32, "%02x ", rxbuff[i]);
// CDC_Transmit_FS((uint8_t*)buffer, cx);
// HAL_Delay(10);
// }
// }
//HAL_GPIO_WritePin(GPIOB, LED1_Pin|LED2_Pin|LED3_Pin, GPIO_PIN_SET);
//HAL_Delay(100);
//HAL_GPIO_WritePin(GPIOB, LED1_Pin|LED2_Pin|LED3_Pin, GPIO_PIN_RESET);
//HAL_Delay(100);
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
{
Error_Handler();
}
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSICalibrationValue = 0;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
RCC_OscInitStruct.PLL.PLLM = 1;
RCC_OscInitStruct.PLL.PLLN = 40;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief Peripherals Common Clock Configuration
* @retval None
*/
void PeriphCommonClock_Config(void)
{
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB|RCC_PERIPHCLK_SDMMC1
|RCC_PERIPHCLK_ADC;
PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_PLLSAI1;
PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLLSAI1;
PeriphClkInit.Sdmmc1ClockSelection = RCC_SDMMC1CLKSOURCE_PLLSAI1;
PeriphClkInit.PLLSAI1.PLLSAI1Source = RCC_PLLSOURCE_MSI;
PeriphClkInit.PLLSAI1.PLLSAI1M = 1;
PeriphClkInit.PLLSAI1.PLLSAI1N = 24;
PeriphClkInit.PLLSAI1.PLLSAI1P = RCC_PLLP_DIV7;
PeriphClkInit.PLLSAI1.PLLSAI1Q = RCC_PLLQ_DIV2;
PeriphClkInit.PLLSAI1.PLLSAI1R = RCC_PLLR_DIV2;
PeriphClkInit.PLLSAI1.PLLSAI1ClockOut = RCC_PLLSAI1_48M2CLK|RCC_PLLSAI1_ADC1CLK;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
code/l452_code/Core/Src/rtc.c
+135
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file rtc.c
* @brief This file provides code for the configuration
* of the RTC instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "rtc.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
RTC_HandleTypeDef hrtc;
/* RTC init function */
void MX_RTC_Init(void)
{
/* USER CODE BEGIN RTC_Init 0 */
/* USER CODE END RTC_Init 0 */
RTC_TimeTypeDef sTime = {0};
RTC_DateTypeDef sDate = {0};
/* USER CODE BEGIN RTC_Init 1 */
/* USER CODE END RTC_Init 1 */
/** Initialize RTC Only
*/
hrtc.Instance = RTC;
hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
hrtc.Init.AsynchPrediv = 127;
hrtc.Init.SynchPrediv = 255;
hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&hrtc) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN Check_RTC_BKUP */
/* USER CODE END Check_RTC_BKUP */
/** Initialize RTC and set the Time and Date
*/
sTime.Hours = 0x0;
sTime.Minutes = 0x0;
sTime.Seconds = 0x0;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD) != HAL_OK)
{
Error_Handler();
}
sDate.WeekDay = RTC_WEEKDAY_MONDAY;
sDate.Month = RTC_MONTH_JANUARY;
sDate.Date = 0x1;
sDate.Year = 0x0;
if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN RTC_Init 2 */
/* USER CODE END RTC_Init 2 */
}
void HAL_RTC_MspInit(RTC_HandleTypeDef* rtcHandle)
{
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(rtcHandle->Instance==RTC)
{
/* USER CODE BEGIN RTC_MspInit 0 */
/* USER CODE END RTC_MspInit 0 */
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC;
PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/* RTC clock enable */
__HAL_RCC_RTC_ENABLE();
/* USER CODE BEGIN RTC_MspInit 1 */
/* USER CODE END RTC_MspInit 1 */
}
}
void HAL_RTC_MspDeInit(RTC_HandleTypeDef* rtcHandle)
{
if(rtcHandle->Instance==RTC)
{
/* USER CODE BEGIN RTC_MspDeInit 0 */
/* USER CODE END RTC_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_RTC_DISABLE();
/* USER CODE BEGIN RTC_MspDeInit 1 */
/* USER CODE END RTC_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/sdmmc.c
+135
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file sdmmc.c
* @brief This file provides code for the configuration
* of the SDMMC instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "sdmmc.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
SD_HandleTypeDef hsd1;
/* SDMMC1 init function */
void MX_SDMMC1_SD_Init(void)
{
/* USER CODE BEGIN SDMMC1_Init 0 */
/* USER CODE END SDMMC1_Init 0 */
/* USER CODE BEGIN SDMMC1_Init 1 */
/* USER CODE END SDMMC1_Init 1 */
hsd1.Instance = SDMMC1;
hsd1.Init.ClockEdge = SDMMC_CLOCK_EDGE_RISING;
hsd1.Init.ClockBypass = SDMMC_CLOCK_BYPASS_DISABLE;
hsd1.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_DISABLE;
hsd1.Init.BusWide = SDMMC_BUS_WIDE_4B;
hsd1.Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_DISABLE;
hsd1.Init.ClockDiv = 0;
/* USER CODE BEGIN SDMMC1_Init 2 */
/* USER CODE END SDMMC1_Init 2 */
}
void HAL_SD_MspInit(SD_HandleTypeDef* sdHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(sdHandle->Instance==SDMMC1)
{
/* USER CODE BEGIN SDMMC1_MspInit 0 */
/* USER CODE END SDMMC1_MspInit 0 */
/* SDMMC1 clock enable */
__HAL_RCC_SDMMC1_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
/**SDMMC1 GPIO Configuration
PC8 ------> SDMMC1_D0
PC9 ------> SDMMC1_D1
PC10 ------> SDMMC1_D2
PC11 ------> SDMMC1_D3
PC12 ------> SDMMC1_CK
PD2 ------> SDMMC1_CMD
*/
GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
|GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
/* SDMMC1 interrupt Init */
HAL_NVIC_SetPriority(SDMMC1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(SDMMC1_IRQn);
/* USER CODE BEGIN SDMMC1_MspInit 1 */
/* USER CODE END SDMMC1_MspInit 1 */
}
}
void HAL_SD_MspDeInit(SD_HandleTypeDef* sdHandle)
{
if(sdHandle->Instance==SDMMC1)
{
/* USER CODE BEGIN SDMMC1_MspDeInit 0 */
/* USER CODE END SDMMC1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_SDMMC1_CLK_DISABLE();
/**SDMMC1 GPIO Configuration
PC8 ------> SDMMC1_D0
PC9 ------> SDMMC1_D1
PC10 ------> SDMMC1_D2
PC11 ------> SDMMC1_D3
PC12 ------> SDMMC1_CK
PD2 ------> SDMMC1_CMD
*/
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
|GPIO_PIN_12);
HAL_GPIO_DeInit(GPIOD, GPIO_PIN_2);
/* SDMMC1 interrupt Deinit */
HAL_NVIC_DisableIRQ(SDMMC1_IRQn);
/* USER CODE BEGIN SDMMC1_MspDeInit 1 */
/* USER CODE END SDMMC1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/spi.c
+127
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@@ -0,0 +1,127 @@
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file spi.c
* @brief This file provides code for the configuration
* of the SPI instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "spi.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
SPI_HandleTypeDef hspi1;
/* SPI1 init function */
void MX_SPI1_Init(void)
{
/* USER CODE BEGIN SPI1_Init 0 */
/* USER CODE END SPI1_Init 0 */
/* USER CODE BEGIN SPI1_Init 1 */
/* USER CODE END SPI1_Init 1 */
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT; // low + 2 edge for adc
hspi1.Init.CLKPolarity = SPI_POLARITY_HIGH; // high
hspi1.Init.CLKPhase = SPI_PHASE_2EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 7;
hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi1.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SPI1_Init 2 */
/* USER CODE END SPI1_Init 2 */
}
void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(spiHandle->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspInit 0 */
/* USER CODE END SPI1_MspInit 0 */
/* SPI1 clock enable */
__HAL_RCC_SPI1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**SPI1 GPIO Configuration
PA1 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* SPI1 interrupt Init */
HAL_NVIC_SetPriority(SPI1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(SPI1_IRQn);
/* USER CODE BEGIN SPI1_MspInit 1 */
/* USER CODE END SPI1_MspInit 1 */
}
}
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle)
{
if(spiHandle->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspDeInit 0 */
/* USER CODE END SPI1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_SPI1_CLK_DISABLE();
/**SPI1 GPIO Configuration
PA1 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_1|GPIO_PIN_6|GPIO_PIN_7);
/* SPI1 interrupt Deinit */
HAL_NVIC_DisableIRQ(SPI1_IRQn);
/* USER CODE BEGIN SPI1_MspDeInit 1 */
/* USER CODE END SPI1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/stm32l4xx_hal_msp.c
+81
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@@ -0,0 +1,81 @@
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32l4xx_hal_msp.c
* @brief This file provides code for the MSP Initialization
* and de-Initialization codes.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Define */
/* USER CODE END Define */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Macro */
/* USER CODE END Macro */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* External functions --------------------------------------------------------*/
/* USER CODE BEGIN ExternalFunctions */
/* USER CODE END ExternalFunctions */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* Initializes the Global MSP.
*/
void HAL_MspInit(void)
{
/* USER CODE BEGIN MspInit 0 */
/* USER CODE END MspInit 0 */
__HAL_RCC_SYSCFG_CLK_ENABLE();
__HAL_RCC_PWR_CLK_ENABLE();
/* System interrupt init*/
/* USER CODE BEGIN MspInit 1 */
/* USER CODE END MspInit 1 */
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/stm32l4xx_it.c
+335
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@@ -0,0 +1,335 @@
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32l4xx_it.c
* @brief Interrupt Service Routines.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32l4xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/* External variables --------------------------------------------------------*/
extern PCD_HandleTypeDef hpcd_USB_FS;
extern ADC_HandleTypeDef hadc1;
extern I2C_HandleTypeDef hi2c1;
extern SD_HandleTypeDef hsd1;
extern SPI_HandleTypeDef hspi1;
extern TIM_HandleTypeDef htim6;
/* USER CODE BEGIN EV */
/* USER CODE END EV */
/******************************************************************************/
/* Cortex-M4 Processor Interruption and Exception Handlers */
/******************************************************************************/
/**
* @brief This function handles Non maskable interrupt.
*/
void NMI_Handler(void)
{
/* USER CODE BEGIN NonMaskableInt_IRQn 0 */
/* USER CODE END NonMaskableInt_IRQn 0 */
/* USER CODE BEGIN NonMaskableInt_IRQn 1 */
while (1)
{
}
/* USER CODE END NonMaskableInt_IRQn 1 */
}
/**
* @brief This function handles Hard fault interrupt.
*/
void HardFault_Handler(void)
{
/* USER CODE BEGIN HardFault_IRQn 0 */
/* USER CODE END HardFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_HardFault_IRQn 0 */
/* USER CODE END W1_HardFault_IRQn 0 */
}
}
/**
* @brief This function handles Memory management fault.
*/
void MemManage_Handler(void)
{
/* USER CODE BEGIN MemoryManagement_IRQn 0 */
/* USER CODE END MemoryManagement_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
/* USER CODE END W1_MemoryManagement_IRQn 0 */
}
}
/**
* @brief This function handles Prefetch fault, memory access fault.
*/
void BusFault_Handler(void)
{
/* USER CODE BEGIN BusFault_IRQn 0 */
/* USER CODE END BusFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_BusFault_IRQn 0 */
/* USER CODE END W1_BusFault_IRQn 0 */
}
}
/**
* @brief This function handles Undefined instruction or illegal state.
*/
void UsageFault_Handler(void)
{
/* USER CODE BEGIN UsageFault_IRQn 0 */
/* USER CODE END UsageFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_UsageFault_IRQn 0 */
/* USER CODE END W1_UsageFault_IRQn 0 */
}
}
/**
* @brief This function handles System service call via SWI instruction.
*/
void SVC_Handler(void)
{
/* USER CODE BEGIN SVCall_IRQn 0 */
/* USER CODE END SVCall_IRQn 0 */
/* USER CODE BEGIN SVCall_IRQn 1 */
/* USER CODE END SVCall_IRQn 1 */
}
/**
* @brief This function handles Debug monitor.
*/
void DebugMon_Handler(void)
{
/* USER CODE BEGIN DebugMonitor_IRQn 0 */
/* USER CODE END DebugMonitor_IRQn 0 */
/* USER CODE BEGIN DebugMonitor_IRQn 1 */
/* USER CODE END DebugMonitor_IRQn 1 */
}
/**
* @brief This function handles Pendable request for system service.
*/
void PendSV_Handler(void)
{
/* USER CODE BEGIN PendSV_IRQn 0 */
/* USER CODE END PendSV_IRQn 0 */
/* USER CODE BEGIN PendSV_IRQn 1 */
/* USER CODE END PendSV_IRQn 1 */
}
/**
* @brief This function handles System tick timer.
*/
void SysTick_Handler(void)
{
/* USER CODE BEGIN SysTick_IRQn 0 */
/* USER CODE END SysTick_IRQn 0 */
HAL_IncTick();
/* USER CODE BEGIN SysTick_IRQn 1 */
/* USER CODE END SysTick_IRQn 1 */
}
/******************************************************************************/
/* STM32L4xx Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32l4xx.s). */
/******************************************************************************/
/**
* @brief This function handles EXTI line0 interrupt.
*/
void EXTI0_IRQHandler(void)
{
/* USER CODE BEGIN EXTI0_IRQn 0 */
/* USER CODE END EXTI0_IRQn 0 */
HAL_GPIO_EXTI_IRQHandler(BUTTON1_Pin);
/* USER CODE BEGIN EXTI0_IRQn 1 */
/* USER CODE END EXTI0_IRQn 1 */
}
/**
* @brief This function handles EXTI line3 interrupt.
*/
void EXTI3_IRQHandler(void)
{
/* USER CODE BEGIN EXTI3_IRQn 0 */
/* USER CODE END EXTI3_IRQn 0 */
HAL_GPIO_EXTI_IRQHandler(IMU_DRDY_Pin);
/* USER CODE BEGIN EXTI3_IRQn 1 */
/* USER CODE END EXTI3_IRQn 1 */
}
/**
* @brief This function handles ADC1 global interrupt.
*/
void ADC1_IRQHandler(void)
{
/* USER CODE BEGIN ADC1_IRQn 0 */
/* USER CODE END ADC1_IRQn 0 */
HAL_ADC_IRQHandler(&hadc1);
/* USER CODE BEGIN ADC1_IRQn 1 */
/* USER CODE END ADC1_IRQn 1 */
}
/**
* @brief This function handles EXTI line[9:5] interrupts.
*/
void EXTI9_5_IRQHandler(void)
{
/* USER CODE BEGIN EXTI9_5_IRQn 0 */
/* USER CODE END EXTI9_5_IRQn 0 */
HAL_GPIO_EXTI_IRQHandler(ADC_DRDY_Pin);
HAL_GPIO_EXTI_IRQHandler(PPG_DRDY_Pin);
/* USER CODE BEGIN EXTI9_5_IRQn 1 */
/* USER CODE END EXTI9_5_IRQn 1 */
}
/**
* @brief This function handles I2C1 event interrupt.
*/
void I2C1_EV_IRQHandler(void)
{
/* USER CODE BEGIN I2C1_EV_IRQn 0 */
/* USER CODE END I2C1_EV_IRQn 0 */
HAL_I2C_EV_IRQHandler(&hi2c1);
/* USER CODE BEGIN I2C1_EV_IRQn 1 */
/* USER CODE END I2C1_EV_IRQn 1 */
}
/**
* @brief This function handles SPI1 global interrupt.
*/
void SPI1_IRQHandler(void)
{
/* USER CODE BEGIN SPI1_IRQn 0 */
/* USER CODE END SPI1_IRQn 0 */
HAL_SPI_IRQHandler(&hspi1);
/* USER CODE BEGIN SPI1_IRQn 1 */
/* USER CODE END SPI1_IRQn 1 */
}
/**
* @brief This function handles SDMMC1 global interrupt.
*/
void SDMMC1_IRQHandler(void)
{
/* USER CODE BEGIN SDMMC1_IRQn 0 */
/* USER CODE END SDMMC1_IRQn 0 */
HAL_SD_IRQHandler(&hsd1);
/* USER CODE BEGIN SDMMC1_IRQn 1 */
/* USER CODE END SDMMC1_IRQn 1 */
}
/**
* @brief This function handles TIM6 global interrupt, DAC channel1 underrun error interrupt.
*/
void TIM6_DAC_IRQHandler(void)
{
/* USER CODE BEGIN TIM6_DAC_IRQn 0 */
/* USER CODE END TIM6_DAC_IRQn 0 */
HAL_TIM_IRQHandler(&htim6);
/* USER CODE BEGIN TIM6_DAC_IRQn 1 */
/* USER CODE END TIM6_DAC_IRQn 1 */
}
/**
* @brief This function handles USB event interrupt through EXTI line 17.
*/
void USB_IRQHandler(void)
{
/* USER CODE BEGIN USB_IRQn 0 */
/* USER CODE END USB_IRQn 0 */
HAL_PCD_IRQHandler(&hpcd_USB_FS);
/* USER CODE BEGIN USB_IRQn 1 */
/* USER CODE END USB_IRQn 1 */
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/syscalls.c
+244
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/**
******************************************************************************
* @file syscalls.c
* @author Auto-generated by STM32CubeMX
* @brief Minimal System calls file
*
* For more information about which c-functions
* need which of these lowlevel functions
* please consult the Newlib or Picolibc libc-manual
******************************************************************************
* @attention
*
* Copyright (c) 2020-2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes */
#include <sys/stat.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/times.h>
/* Variables */
extern int __io_putchar(int ch) __attribute__((weak));
extern int __io_getchar(void) __attribute__((weak));
char *__env[1] = { 0 };
char **environ = __env;
/* Functions */
void initialise_monitor_handles()
{
}
int _getpid(void)
{
return 1;
}
int _kill(int pid, int sig)
{
(void)pid;
(void)sig;
errno = EINVAL;
return -1;
}
void _exit (int status)
{
_kill(status, -1);
while (1) {} /* Make sure we hang here */
}
__attribute__((weak)) int _read(int file, char *ptr, int len)
{
(void)file;
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
*ptr++ = __io_getchar();
}
return len;
}
__attribute__((weak)) int _write(int file, char *ptr, int len)
{
(void)file;
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
__io_putchar(*ptr++);
}
return len;
}
int _close(int file)
{
(void)file;
return -1;
}
int _fstat(int file, struct stat *st)
{
(void)file;
st->st_mode = S_IFCHR;
return 0;
}
int _isatty(int file)
{
(void)file;
return 1;
}
int _lseek(int file, int ptr, int dir)
{
(void)file;
(void)ptr;
(void)dir;
return 0;
}
int _open(char *path, int flags, ...)
{
(void)path;
(void)flags;
/* Pretend like we always fail */
return -1;
}
int _wait(int *status)
{
(void)status;
errno = ECHILD;
return -1;
}
int _unlink(char *name)
{
(void)name;
errno = ENOENT;
return -1;
}
clock_t _times(struct tms *buf)
{
(void)buf;
return -1;
}
int _stat(const char *file, struct stat *st)
{
(void)file;
st->st_mode = S_IFCHR;
return 0;
}
int _link(char *old, char *new)
{
(void)old;
(void)new;
errno = EMLINK;
return -1;
}
int _fork(void)
{
errno = EAGAIN;
return -1;
}
int _execve(char *name, char **argv, char **env)
{
(void)name;
(void)argv;
(void)env;
errno = ENOMEM;
return -1;
}
// --- Picolibc Specific Section ---
#if defined(__PICOLIBC__)
/**
* @brief Picolibc helper function to output a character to a FILE stream.
* This redirects the output to the low-level __io_putchar function.
* @param c Character to write.
* @param file FILE stream pointer (ignored).
* @retval int The character written.
*/
static int starm_putc(char c, FILE *file)
{
(void) file;
__io_putchar(c);
return c;
}
/**
* @brief Picolibc helper function to input a character from a FILE stream.
* This redirects the input from the low-level __io_getchar function.
* @param file FILE stream pointer (ignored).
* @retval int The character read, cast to an unsigned char then int.
*/
static int starm_getc(FILE *file)
{
unsigned char c;
(void) file;
c = __io_getchar();
return c;
}
// Define and initialize the standard I/O streams for Picolibc.
// FDEV_SETUP_STREAM connects the starm_putc and starm_getc helper functions to a FILE structure.
// _FDEV_SETUP_RW indicates the stream is for reading and writing.
static FILE __stdio = FDEV_SETUP_STREAM(starm_putc,
starm_getc,
NULL,
_FDEV_SETUP_RW);
// Assign the standard stream pointers (stdin, stdout, stderr) to the initialized stream.
// Picolibc uses these pointers for standard I/O operations (printf, scanf, etc.).
FILE *const stdin = &__stdio;
__strong_reference(stdin, stdout);
__strong_reference(stdin, stderr);
// Create strong aliases mapping standard C library function names (without underscore)
// to the implemented system call stubs (with underscore). Picolibc uses these
// standard names internally, so this linking is required.
__strong_reference(_read, read);
__strong_reference(_write, write);
__strong_reference(_times, times);
__strong_reference(_execve, execve);
__strong_reference(_fork, fork);
__strong_reference(_link, link);
__strong_reference(_unlink, unlink);
__strong_reference(_stat, stat);
__strong_reference(_wait, wait);
__strong_reference(_open, open);
__strong_reference(_close, close);
__strong_reference(_lseek, lseek);
__strong_reference(_isatty, isatty);
__strong_reference(_fstat, fstat);
__strong_reference(_exit, exit);
__strong_reference(_kill, kill);
__strong_reference(_getpid, getpid);
#endif //__PICOLIBC__
code/l452_code/Core/Src/sysmem.c
+87
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@@ -0,0 +1,87 @@
/**
******************************************************************************
* @file sysmem.c
* @author Generated by STM32CubeMX
* @brief System Memory calls file
*
* For more information about which C functions
* need which of these lowlevel functions
* please consult the Newlib or Picolibc libc manual
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes */
#include <errno.h>
#include <stdint.h>
#include <stddef.h>
/**
* Pointer to the current high watermark of the heap usage
*/
static uint8_t *__sbrk_heap_end = NULL;
/**
* @brief _sbrk() allocates memory to the newlib heap and is used by malloc
* and others from the C library
*
* @verbatim
* ############################################################################
* # .data # .bss # newlib heap # MSP stack #
* # # # # Reserved by _Min_Stack_Size #
* ############################################################################
* ^-- RAM start ^-- _end _estack, RAM end --^
* @endverbatim
*
* This implementation starts allocating at the '_end' linker symbol
* The '_Min_Stack_Size' linker symbol reserves a memory for the MSP stack
* The implementation considers '_estack' linker symbol to be RAM end
* NOTE: If the MSP stack, at any point during execution, grows larger than the
* reserved size, please increase the '_Min_Stack_Size'.
*
* @param incr Memory size
* @return Pointer to allocated memory
*/
void *_sbrk(ptrdiff_t incr)
{
extern uint8_t _end; /* Symbol defined in the linker script */
extern uint8_t _estack; /* Symbol defined in the linker script */
extern uint32_t _Min_Stack_Size; /* Symbol defined in the linker script */
const uint32_t stack_limit = (uint32_t)&_estack - (uint32_t)&_Min_Stack_Size;
const uint8_t *max_heap = (uint8_t *)stack_limit;
uint8_t *prev_heap_end;
/* Initialize heap end at first call */
if (NULL == __sbrk_heap_end)
{
__sbrk_heap_end = &_end;
}
/* Protect heap from growing into the reserved MSP stack */
if (__sbrk_heap_end + incr > max_heap)
{
errno = ENOMEM;
return (void *)-1;
}
prev_heap_end = __sbrk_heap_end;
__sbrk_heap_end += incr;
return (void *)prev_heap_end;
}
#if defined(__PICOLIBC__)
// Picolibc expects syscalls without the leading underscore.
// This creates a strong alias so that
// calls to `sbrk()` are resolved to our `_sbrk()` implementation.
__strong_reference(_sbrk, sbrk);
#endif
code/l452_code/Core/Src/system_stm32l4xx.c
+334
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@@ -0,0 +1,334 @@
/**
******************************************************************************
* @file system_stm32l4xx.c
* @author MCD Application Team
* @brief CMSIS Cortex-M4 Device Peripheral Access Layer System Source File
*
* This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the "startup_stm32l4xx.s" file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
* After each device reset the MSI (4 MHz) is used as system clock source.
* Then SystemInit() function is called, in "startup_stm32l4xx.s" file, to
* configure the system clock before to branch to main program.
*
* This file configures the system clock as follows:
*=============================================================================
*-----------------------------------------------------------------------------
* System Clock source | MSI
*-----------------------------------------------------------------------------
* SYSCLK(Hz) | 4000000
*-----------------------------------------------------------------------------
* HCLK(Hz) | 4000000
*-----------------------------------------------------------------------------
* AHB Prescaler | 1
*-----------------------------------------------------------------------------
* APB1 Prescaler | 1
*-----------------------------------------------------------------------------
* APB2 Prescaler | 1
*-----------------------------------------------------------------------------
* PLL_M | 1
*-----------------------------------------------------------------------------
* PLL_N | 8
*-----------------------------------------------------------------------------
* PLL_P | 7
*-----------------------------------------------------------------------------
* PLL_Q | 2
*-----------------------------------------------------------------------------
* PLL_R | 2
*-----------------------------------------------------------------------------
* PLLSAI1_P | NA
*-----------------------------------------------------------------------------
* PLLSAI1_Q | NA
*-----------------------------------------------------------------------------
* PLLSAI1_R | NA
*-----------------------------------------------------------------------------
* PLLSAI2_P | NA
*-----------------------------------------------------------------------------
* PLLSAI2_Q | NA
*-----------------------------------------------------------------------------
* PLLSAI2_R | NA
*-----------------------------------------------------------------------------
* Require 48MHz for USB OTG FS, | Disabled
* SDIO and RNG clock |
*-----------------------------------------------------------------------------
*=============================================================================
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32l4xx_system
* @{
*/
/** @addtogroup STM32L4xx_System_Private_Includes
* @{
*/
#include "stm32l4xx.h"
/**
* @}
*/
/** @addtogroup STM32L4xx_System_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @addtogroup STM32L4xx_System_Private_Defines
* @{
*/
#if !defined (HSE_VALUE)
#define HSE_VALUE 8000000U /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */
#if !defined (MSI_VALUE)
#define MSI_VALUE 4000000U /*!< Value of the Internal oscillator in Hz*/
#endif /* MSI_VALUE */
#if !defined (HSI_VALUE)
#define HSI_VALUE 16000000U /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */
/* Note: Following vector table addresses must be defined in line with linker
configuration. */
/*!< Uncomment the following line if you need to relocate the vector table
anywhere in Flash or Sram, else the vector table is kept at the automatic
remap of boot address selected */
/* #define USER_VECT_TAB_ADDRESS */
#if defined(USER_VECT_TAB_ADDRESS)
/*!< Uncomment the following line if you need to relocate your vector Table
in Sram else user remap will be done in Flash. */
/* #define VECT_TAB_SRAM */
#if defined(VECT_TAB_SRAM)
#define VECT_TAB_BASE_ADDRESS SRAM1_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#else
#define VECT_TAB_BASE_ADDRESS FLASH_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#endif /* VECT_TAB_SRAM */
#if !defined(VECT_TAB_OFFSET)
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table offset field.
This value must be a multiple of 0x200. */
#endif /* VECT_TAB_OFFSET */
#endif /* USER_VECT_TAB_ADDRESS */
/******************************************************************************/
/**
* @}
*/
/** @addtogroup STM32L4xx_System_Private_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32L4xx_System_Private_Variables
* @{
*/
/* The SystemCoreClock variable is updated in three ways:
1) by calling CMSIS function SystemCoreClockUpdate()
2) by calling HAL API function HAL_RCC_GetHCLKFreq()
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
Note: If you use this function to configure the system clock; then there
is no need to call the 2 first functions listed above, since SystemCoreClock
variable is updated automatically.
*/
uint32_t SystemCoreClock = 4000000U;
const uint8_t AHBPrescTable[16] = {0U, 0U, 0U, 0U, 0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U, 6U, 7U, 8U, 9U};
const uint8_t APBPrescTable[8] = {0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U};
const uint32_t MSIRangeTable[12] = {100000U, 200000U, 400000U, 800000U, 1000000U, 2000000U, \
4000000U, 8000000U, 16000000U, 24000000U, 32000000U, 48000000U};
/**
* @}
*/
/** @addtogroup STM32L4xx_System_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @addtogroup STM32L4xx_System_Private_Functions
* @{
*/
/**
* @brief Setup the microcontroller system.
* @retval None
*/
void SystemInit(void)
{
#if defined(USER_VECT_TAB_ADDRESS)
/* Configure the Vector Table location -------------------------------------*/
SCB->VTOR = VECT_TAB_BASE_ADDRESS | VECT_TAB_OFFSET;
#endif
/* FPU settings ------------------------------------------------------------*/
#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
SCB->CPACR |= ((3UL << 20U)|(3UL << 22U)); /* set CP10 and CP11 Full Access */
#endif
}
/**
* @brief Update SystemCoreClock variable according to Clock Register Values.
* The SystemCoreClock variable contains the core clock (HCLK), it can
* be used by the user application to setup the SysTick timer or configure
* other parameters.
*
* @note Each time the core clock (HCLK) changes, this function must be called
* to update SystemCoreClock variable value. Otherwise, any configuration
* based on this variable will be incorrect.
*
* @note - The system frequency computed by this function is not the real
* frequency in the chip. It is calculated based on the predefined
* constant and the selected clock source:
*
* - If SYSCLK source is MSI, SystemCoreClock will contain the MSI_VALUE(*)
*
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(**)
*
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(***)
*
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(***)
* or HSI_VALUE(*) or MSI_VALUE(*) multiplied/divided by the PLL factors.
*
* (*) MSI_VALUE is a constant defined in stm32l4xx_hal.h file (default value
* 4 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
*
* (**) HSI_VALUE is a constant defined in stm32l4xx_hal.h file (default value
* 16 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
*
* (***) HSE_VALUE is a constant defined in stm32l4xx_hal.h file (default value
* 8 MHz), user has to ensure that HSE_VALUE is same as the real
* frequency of the crystal used. Otherwise, this function may
* have wrong result.
*
* - The result of this function could be not correct when using fractional
* value for HSE crystal.
*
* @retval None
*/
void SystemCoreClockUpdate(void)
{
uint32_t tmp, msirange, pllvco, pllsource, pllm, pllr;
/* Get MSI Range frequency--------------------------------------------------*/
if ((RCC->CR & RCC_CR_MSIRGSEL) == 0U)
{ /* MSISRANGE from RCC_CSR applies */
msirange = (RCC->CSR & RCC_CSR_MSISRANGE) >> 8U;
}
else
{ /* MSIRANGE from RCC_CR applies */
msirange = (RCC->CR & RCC_CR_MSIRANGE) >> 4U;
}
/*MSI frequency range in HZ*/
msirange = MSIRangeTable[msirange];
/* Get SYSCLK source -------------------------------------------------------*/
switch (RCC->CFGR & RCC_CFGR_SWS)
{
case 0x00: /* MSI used as system clock source */
SystemCoreClock = msirange;
break;
case 0x04: /* HSI used as system clock source */
SystemCoreClock = HSI_VALUE;
break;
case 0x08: /* HSE used as system clock source */
SystemCoreClock = HSE_VALUE;
break;
case 0x0C: /* PLL used as system clock source */
/* PLL_VCO = (HSE_VALUE or HSI_VALUE or MSI_VALUE/ PLLM) * PLLN
SYSCLK = PLL_VCO / PLLR
*/
pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC);
pllm = ((RCC->PLLCFGR & RCC_PLLCFGR_PLLM) >> 4U) + 1U ;
switch (pllsource)
{
case 0x02: /* HSI used as PLL clock source */
pllvco = (HSI_VALUE / pllm);
break;
case 0x03: /* HSE used as PLL clock source */
pllvco = (HSE_VALUE / pllm);
break;
default: /* MSI used as PLL clock source */
pllvco = (msirange / pllm);
break;
}
pllvco = pllvco * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 8U);
pllr = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLR) >> 25U) + 1U) * 2U;
SystemCoreClock = pllvco/pllr;
break;
default:
SystemCoreClock = msirange;
break;
}
/* Compute HCLK clock frequency --------------------------------------------*/
/* Get HCLK prescaler */
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4U)];
/* HCLK clock frequency */
SystemCoreClock >>= tmp;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
code/l452_code/Core/Src/tim.c
+190
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file tim.c
* @brief This file provides code for the configuration
* of the TIM instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "tim.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
TIM_HandleTypeDef htim2;
TIM_HandleTypeDef htim6;
/* TIM2 init function */
void MX_TIM2_Init(void)
{
/* USER CODE BEGIN TIM2_Init 0 */
/* USER CODE END TIM2_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
/* USER CODE BEGIN TIM2_Init 1 */
/* USER CODE END TIM2_Init 1 */
htim2.Instance = TIM2;
htim2.Init.Prescaler = 0;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 4294967295;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_ETRMODE2;
sClockSourceConfig.ClockPolarity = TIM_CLOCKPOLARITY_NONINVERTED;
sClockSourceConfig.ClockPrescaler = TIM_CLOCKPRESCALER_DIV1;
sClockSourceConfig.ClockFilter = 0;
if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM2_Init 2 */
/* USER CODE END TIM2_Init 2 */
}
/* TIM6 init function */
void MX_TIM6_Init(void)
{
/* USER CODE BEGIN TIM6_Init 0 */
/* USER CODE END TIM6_Init 0 */
TIM_MasterConfigTypeDef sMasterConfig = {0};
/* USER CODE BEGIN TIM6_Init 1 */
/* USER CODE END TIM6_Init 1 */
htim6.Instance = TIM6;
htim6.Init.Prescaler = 39999;
htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
htim6.Init.Period = 19999;
htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM6_Init 2 */
/* USER CODE END TIM6_Init 2 */
}
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(tim_baseHandle->Instance==TIM2)
{
/* USER CODE BEGIN TIM2_MspInit 0 */
/* USER CODE END TIM2_MspInit 0 */
/* TIM2 clock enable */
__HAL_RCC_TIM2_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**TIM2 GPIO Configuration
PA0 ------> TIM2_ETR
*/
GPIO_InitStruct.Pin = CLKIN_ADC_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF14_TIM2;
HAL_GPIO_Init(CLKIN_ADC_GPIO_Port, &GPIO_InitStruct);
/* USER CODE BEGIN TIM2_MspInit 1 */
/* USER CODE END TIM2_MspInit 1 */
}
else if(tim_baseHandle->Instance==TIM6)
{
/* USER CODE BEGIN TIM6_MspInit 0 */
/* USER CODE END TIM6_MspInit 0 */
/* TIM6 clock enable */
__HAL_RCC_TIM6_CLK_ENABLE();
/* TIM6 interrupt Init */
HAL_NVIC_SetPriority(TIM6_DAC_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(TIM6_DAC_IRQn);
/* USER CODE BEGIN TIM6_MspInit 1 */
/* USER CODE END TIM6_MspInit 1 */
}
}
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{
if(tim_baseHandle->Instance==TIM2)
{
/* USER CODE BEGIN TIM2_MspDeInit 0 */
/* USER CODE END TIM2_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_TIM2_CLK_DISABLE();
/**TIM2 GPIO Configuration
PA0 ------> TIM2_ETR
*/
HAL_GPIO_DeInit(CLKIN_ADC_GPIO_Port, CLKIN_ADC_Pin);
/* USER CODE BEGIN TIM2_MspDeInit 1 */
/* USER CODE END TIM2_MspDeInit 1 */
}
else if(tim_baseHandle->Instance==TIM6)
{
/* USER CODE BEGIN TIM6_MspDeInit 0 */
/* USER CODE END TIM6_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_TIM6_CLK_DISABLE();
/* TIM6 interrupt Deinit */
HAL_NVIC_DisableIRQ(TIM6_DAC_IRQn);
/* USER CODE BEGIN TIM6_MspDeInit 1 */
/* USER CODE END TIM6_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
code/l452_code/Core/Src/usart.c
+128
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file usart.c
* @brief This file provides code for the configuration
* of the USART instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "usart.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
UART_HandleTypeDef huart1;
/* USART1 init function */
void MX_USART1_UART_Init(void)
{
/* USER CODE BEGIN USART1_Init 0 */
/* USER CODE END USART1_Init 0 */
/* USER CODE BEGIN USART1_Init 1 */
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}
void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
if(uartHandle->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspInit 0 */
/* USER CODE END USART1_MspInit 0 */
/** Initializes the peripherals clock
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/* USART1 clock enable */
__HAL_RCC_USART1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**USART1 GPIO Configuration
PB6 ------> USART1_TX
PB7 ------> USART1_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* USER CODE BEGIN USART1_MspInit 1 */
/* USER CODE END USART1_MspInit 1 */
}
}
void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{
if(uartHandle->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspDeInit 0 */
/* USER CODE END USART1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_USART1_CLK_DISABLE();
/**USART1 GPIO Configuration
PB6 ------> USART1_TX
PB7 ------> USART1_RX
*/
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6|GPIO_PIN_7);
/* USER CODE BEGIN USART1_MspDeInit 1 */
/* USER CODE END USART1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */