Measurement of the heart rate of an asthmatic person using the MAX30100 sensor

[1233]

My sensor does not turn on and does not send any data. Here is my code:

#include "main.h"

#include "max30100_for_stm32_hal.h"

/* Private includes ----------------------------------------------------------*/

/* USER CODE BEGIN Includes */

#include <stdio.h>

#include <string.h>

#include "max30100_for_stm32_hal.h"

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/

/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/

/* USER CODE BEGIN PD */

#define BPM_THRESHOLD 30000 // Seuil de détection de pic IR (à ajuster selon les données du capteur)

#define SAMPLE_RATE 1000 // Intervalle de collecte de données en ms

#define MAX30100_REG_STATUS 0x00

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/

/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

I2C_HandleTypeDef hi2c1;

UART_HandleTypeDef huart2;

/* USER CODE BEGIN PV */

uint32_t ir_data = 0;

uint32_t red_data = 0;

int bpm = 0;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_I2C1_Init(void);

static void MX_USART2_UART_Init(void);

int calculate_bpm(uint32_t ir_value);

/* USER CODE BEGIN PFP */

int __io_putchar(int ch);

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**

* @brief The application entry point.

* @retval int

*/

int calculate_bpm(uint32_t ir_value)

{

static uint32_t last_ir_value = 0;

static uint32_t last_peak_time = 0;

static int pulse_count = 0;

uint32_t current_time = HAL_GetTick();

// Détection d'un pic IR basé sur un seuil (d'après la valeur IR)

if (ir_value > BPM_THRESHOLD && last_ir_value <= BPM_THRESHOLD) // Si on détecte un pic IR

{

if (last_peak_time > 0)

{

// Calcul du BPM basé sur l'intervalle entre les pics IR

int interval = current_time - last_peak_time;

pulse_count++;

if (pulse_count >= 5) // Après avoir détecté 5 pics

{

bpm = 60000 / interval; // Calcul du BPM en utilisant l'intervalle entre les pics

pulse_count = 0; // Réinitialisation du compteur de pics

}

}

last_peak_time = current_time; // Mise à jour du temps du dernier pic

}

last_ir_value = ir_value; // Mise à jour de la dernière valeur IR

return bpm;

}

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();

/* USER CODE BEGIN SysInit */

/* USER CODE END SysInit */

/* Initialize all configured peripherals */

MX_GPIO_Init();

MX_I2C1_Init();

MX_USART2_UART_Init();

/* USER CODE BEGIN 2 */

// Initialisation du capteur MAX30100 via la bibliothèque HAL

// Appeler l'initialisation du capteur MAX30100

MAX30100_Init(&hi2c1, &huart2);

// Vérifier l'état du capteur sans tester une valeur précise

uint8_t data;

data = MAX30100_ReadReg(MAX30100_REG_STATUS);

if (data != 0xFF) { // 0xFF signifie généralement "pas de réponse" sur I2C

printf("Capteur MAX30100 prêt. Surveillance de la fréquence cardiaque en cours...\r\n");

} else {

printf("Erreur de communication I2C avec le capteur MAX30100\r\n");

Error_Handler();

}

/* USER CODE END 2 */

/* Infinite loop */

/* USER CODE BEGIN WHILE */

while (1)

{

/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */

// Lire les données du FIFO du capteur

MAX30100_ReadFIFO(); // Lecture du FIFO sans paramètres

// Récupérer ensuite les dernières données IR et RED

ir_data = MAX30100_getIR(); // fonction que tu dois avoir dans ta lib

bpm = calculate_bpm(ir_data); // Calcul BPM à partir de ir_data

printf("IR: %lu, Fréquence cardiaque: %d bpm\r\n", ir_data, bpm);

HAL_Delay(SAMPLE_RATE); // Délai entre chaque mesure

}

int __io_putchar(int ch)

{

HAL_UART_Transmit(&huart2, (uint8_t *)&ch, 1, HAL_MAX_DELAY);

return ch;

}

int fputc(int ch, FILE *f)

{

return __io_putchar(ch);

}

/* USER CODE END 3 */

}

// Rediriger printf vers UART

// Redirection printf vers UART

// Gestion des erreurs

void Error_Handler(void)

{

while (1)

{

HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5); // Clignote la LED pour signaler une erreur

HAL_Delay(100);

}

}

/**

* @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

*/

__HAL_RCC_PWR_CLK_ENABLE();

__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

/** Initializes the RCC Oscillators according to the specified parameters

* in the RCC_OscInitTypeDef structure.

*/

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

RCC_OscInitStruct.HSIState = RCC_HSI_ON;

RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;

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_HSI;

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_0) != HAL_OK)

{

Error_Handler();

}

}

/**

* @brief I2C1 Initialization Function

* @param None

* @retval None

*/

static 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.ClockSpeed = 100000;

hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;

hi2c1.Init.OwnAddress1 = 0;

hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;

hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;

hi2c1.Init.OwnAddress2 = 0;

hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;

hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;

if (HAL_I2C_Init(&hi2c1) != HAL_OK)

{

Error_Handler();

}

/* USER CODE BEGIN I2C1_Init 2 */

/* USER CODE END I2C1_Init 2 */

}

/**

* @brief USART2 Initialization Function

* @param None

* @retval None

*/

static void MX_USART2_UART_Init(void)

{

/* USER CODE BEGIN USART2_Init 0 */

/* USER CODE END USART2_Init 0 */

/* USER CODE BEGIN USART2_Init 1 */

/* USER CODE END USART2_Init 1 */

huart2.Instance = USART2;

huart2.Init.BaudRate = 115200;

huart2.Init.WordLength = UART_WORDLENGTH_8B;

huart2.Init.StopBits = UART_STOPBITS_1;

huart2.Init.Parity = UART_PARITY_NONE;

huart2.Init.Mode = UART_MODE_TX_RX;

huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;

huart2.Init.OverSampling = UART_OVERSAMPLING_16;

if (HAL_UART_Init(&huart2) != HAL_OK)

{

Error_Handler();

}

/* USER CODE BEGIN USART2_Init 2 */

/* USER CODE END USART2_Init 2 */

}

/**

* @brief GPIO Initialization Function

* @param None

* @retval None

*/

static void MX_GPIO_Init(void)

{

GPIO_InitTypeDef GPIO_InitStruct = {0};

/* USER CODE BEGIN MX_GPIO_Init_1 */

/* USER CODE END MX_GPIO_Init_1 */

/* GPIO Ports Clock Enable */

__HAL_RCC_GPIOA_CLK_ENABLE();

__HAL_RCC_GPIOB_CLK_ENABLE();

/*Configure GPIO pin Output Level */

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);

/*Configure GPIO pin : PA5 */

GPIO_InitStruct.Pin = GPIO_PIN_5;

GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

GPIO_InitStruct.Pull = GPIO_NOPULL;

GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/* USER CODE BEGIN MX_GPIO_Init_2 */

/* USER CODE END MX_GPIO_Init_2 */

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**

* @brief This function is executed in case of error occurrence.

* @retval None

*/

/* USER CODE BEGIN Error_Handler_Debug */

/* User can add his own implementation to report the HAL error return state */

/* 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 */