main.c

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/* USER CODE BEGIN Header */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
 
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <math.h>
#include <stdio.h>
 
#include "bmp3.h"
#include "common.h"
#include "i2c_spi_interface.h"
 
/* USER CODE END Includes */
 
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
 
/* USER CODE END PTD */
 
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
 
#define LOCAL_QNH_CALIBRATION
 
#ifdef LOCAL_QNH_CALIBRATION
#define SEA_LEVEL_PRESSURE_PA  102057.7
#else
#define SEA_LEVEL_PRESSURE_PA  101325.0
#endif
 
/* USER CODE END PD */
 
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
 
/* USER CODE END PM */
 
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
 
TIM_HandleTypeDef htim1;
 
UART_HandleTypeDef huart1;
 
/* USER CODE BEGIN PV */
static I2C_SPI_Interface bmp390Intf;
 
static struct bmp3_dev bmp390;
 
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_I2C1_Init(void);
static void MX_TIM1_Init(void);
/* USER CODE BEGIN PFP */
 
/* USER CODE END PFP */
 
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
 
#ifdef REDIRECT_PRINTF
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
 
PUTCHAR_PROTOTYPE
{
  HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF);
 
  return ch;
}
#endif
 
void delayUS (uint16_t us)
{
    __HAL_TIM_SET_COUNTER(&htim1, 0);  // set the counter value a 0
    while (__HAL_TIM_GET_COUNTER(&htim1) < us);  // wait for the counter to reach the us input in the parameter
}
 
static double calculateAltitudeFt(double pressurePa)
{
  double altitudeM = 44330.0 * (1.0 - pow(pressurePa / SEA_LEVEL_PRESSURE_PA, 1.0 / 5.255));
 
  return altitudeM * 3.28084;
}
/* USER CODE END 0 */
 
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_USART1_UART_Init();
  MX_I2C1_Init();
  MX_TIM1_Init();
  /* USER CODE BEGIN 2 */
 
  HAL_TIM_Base_Start(&htim1);
 
  printf("\x1b[2J\x1b[H");  // Clear the dumb terminal screen
 
  {
    int8_t rslt;
    uint16_t settings_sel;
    struct bmp3_settings settings = { 0 };
 
    bmp390Intf.i2c = &hi2c1;
    bmp390.intf_ptr = &bmp390Intf;
 
    bmp3_interface_init(&bmp390, BMP3_I2C_INTF);
    rslt = bmp3_init(&bmp390);
 
    if (rslt == BMP3_OK)
    {
      printf("BMP3 init OK, chip_id=0x%02X\r\n", bmp390.chip_id);
 
      settings.press_en = BMP3_ENABLE;
      settings.temp_en = BMP3_ENABLE;
      settings.odr_filter.press_os = BMP3_OVERSAMPLING_2X;
      settings.odr_filter.temp_os = BMP3_OVERSAMPLING_2X;
      settings.odr_filter.odr = BMP3_ODR_25_HZ;
 
      settings_sel = BMP3_SEL_PRESS_EN | BMP3_SEL_TEMP_EN | BMP3_SEL_PRESS_OS | BMP3_SEL_TEMP_OS | BMP3_SEL_ODR;
 
      rslt = bmp3_set_sensor_settings(settings_sel, &settings, &bmp390);
      bmp3_check_rslt("bmp3_set_sensor_settings", rslt);
 
      settings.op_mode = BMP3_MODE_NORMAL;
      rslt = bmp3_set_op_mode(&settings, &bmp390);
      bmp3_check_rslt("bmp3_set_op_mode", rslt);
    }
    else
    {
      printf("BMP3 init FAILED, rslt=%d\r\n", rslt);
    }
  }
 
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
 
    /* USER CODE BEGIN 3 */
    {
      int8_t rslt;
      struct bmp3_status status = { { 0 } };
      struct bmp3_data data = { 0 };
 
      rslt = bmp3_get_status(&status, &bmp390);
 
      if ((rslt == BMP3_OK) && (status.intr.drdy == BMP3_ENABLE))
      {
        rslt = bmp3_get_sensor_data(BMP3_PRESS_TEMP, &data, &bmp390);
 
        if (rslt == BMP3_OK)
        {
          double tempF = (data.temperature * 9.0 / 5.0) + 32.0;
          double altitudeFt = calculateAltitudeFt(data.pressure);
          double pressureInHg = data.pressure * 0.0002952998751;
 
          printf("\x1b[5;0H");
          printf("T: %.2f degF, P: %.2f Pa, %.2f inHg, Alt: %.2f ft\r\n", tempF, data.pressure, pressureInHg,
                 altitudeFt);
        }
 
        /* Re-reading status clears the data-ready flag latched above. */
        rslt = bmp3_get_status(&status, &bmp390);
      }
 
      /* Print cadence is decoupled from the sensor's ODR so the terminal
       * output stays slow enough to read without a screen capture. */
      HAL_Delay(1000);
    }
  }
  /* USER CODE END 3 */
}
 
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
 
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
 
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLM = 8;
  RCC_OscInitStruct.PLL.PLLN = 180;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
 
  if (HAL_PWREx_EnableOverDrive() != HAL_OK)
  {
    Error_Handler();
  }
 
  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_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
 
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
}
 
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();
  }
 
  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
  {
    Error_Handler();
  }
 
  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN I2C1_Init 2 */
 
  /* USER CODE END I2C1_Init 2 */
 
}
 
static void MX_TIM1_Init(void)
{
 
  /* USER CODE BEGIN TIM1_Init 0 */
 
  /* USER CODE END TIM1_Init 0 */
 
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
 
  /* USER CODE BEGIN TIM1_Init 1 */
 
  /* USER CODE END TIM1_Init 1 */
  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 180 - 1;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 65535;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM1_Init 2 */
 
  /* USER CODE END TIM1_Init 2 */
 
}
 
static 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 = 19200;
  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;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */
 
  /* USER CODE END USART1_Init 2 */
 
}
 
static void MX_GPIO_Init(void)
{
  /* USER CODE BEGIN MX_GPIO_Init_1 */
 
  /* USER CODE END MX_GPIO_Init_1 */
 
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
 
  /* USER CODE BEGIN MX_GPIO_Init_2 */
 
  /* USER CODE END MX_GPIO_Init_2 */
}
 
/* USER CODE BEGIN 4 */
 
 
/* Documented on the prototype in main.h. */
void _Error_Handler(const char *file, int line)
{
    __disable_irq();
 
#ifdef REDIRECT_PRINTF
    char buf[80];
 
    snprintf(buf, sizeof(buf),
            "Trapped in _Error_Handler(). Called from: %s, line: %d\r\n",
            file, line);
    printf("%s", buf);
#endif
 
    /* User can add an implementation to report the HAL error return state. */
    while(1)
    {
    }
}
 
/* USER CODE END 4 */
 
 
#ifdef  USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* assert_param() can fire from inside any HAL call -- including before
   * REDIRECT_PRINTF's UART is fully set up, or from an unusual calling
   * context -- so this only attempts to report when REDIRECT_PRINTF is
   * available, then halts either way. Continuing after a failed HAL
   * parameter check is undefined behavior, not something safe to log
   * and ignore. */
  __disable_irq();
 
#ifdef REDIRECT_PRINTF
  {
    char buf[96];
 
    snprintf(buf, sizeof(buf),
             "assert_param failed: file %s, line %lu\r\n",
             (char *)file, (unsigned long)line);
    printf("%s", buf);
  }
#endif
 
  while (1)
  {
  }
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */