Program Listing for File 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 <stdlib.h>
#include <string.h>
#include <temperature.h>
/* 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 ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
I2C_HandleTypeDef hi2c2;
UART_HandleTypeDef huart2;
/* USER CODE BEGIN PV */
uint8_t temp_buffer_i = 0;
uint16_t temp_buffer[TEMP_SENSOR_COUNT][TEMP_SAMPLE_COUNT] = {0};
temperature_t temps = {.values = {0}, .min = {UINT8_MAX}, .max = {0}};
uint32_t temp_timer = 0;
uint8_t rx;
uint8_t flag = 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);
static void MX_I2C2_Init(void);
static void MX_NVIC_Init(void);
/* USER CODE BEGIN PFP */
void get_temp_maxmin();
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* 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_I2C1_Init();
MX_USART2_UART_Init();
MX_I2C2_Init();
/* Initialize interrupts */
MX_NVIC_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
HAL_I2C_EnableListen_IT(&hi2c1);
while (1) {
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
// Read temperatures
if (HAL_GetTick() - temp_timer >= TEMP_READ_INTERVAL) {
temp_timer = HAL_GetTick();
I2C_HandleTypeDef *buses[TEMP_BUS_COUNT] = {&hi2c2};
temperature_read_sample(buses, temp_buffer[temp_buffer_i++]);
if (temp_buffer_i == TEMP_SAMPLE_COUNT) {
temp_buffer_i = 0;
char k[255] = {'\0'};
for (uint8_t i = 0; i < TEMP_SENSORS_PER_STRIP; i++) {
sprintf(k + strlen(k), "%d ", temps.values[i]);
}
sprintf(k + strlen(k), "\r\n ");
HAL_UART_Transmit(&huart2, (uint8_t *)k, strlen(k), 100);
// Compute average
temperature_get_average(temp_buffer, temps.values);
temperature_get_extremes(temps.values, temps.min, temps.max);
}
}
if (flag == 1) {
flag = 0;
/* char k[255];
sprintf(k, "%d %d %d %d\r\n", temps.max[0], temps.max[1],
temps.min[0], temps.min[1]);
HAL_UART_Transmit(&huart2, (uint8_t *)k, strlen(k), 10);*/
}
}
/* 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_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 4;
RCC_OscInitStruct.PLL.PLLN = 100;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 4;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != 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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) {
Error_Handler();
}
}
static void MX_NVIC_Init(void) {
/* I2C1_ER_IRQn interrupt configuration */
HAL_NVIC_SetPriority(I2C1_ER_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(I2C1_ER_IRQn);
/* I2C1_EV_IRQn interrupt configuration */
HAL_NVIC_SetPriority(I2C1_EV_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(I2C1_EV_IRQn);
}
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 = 351563;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
hi2c1.Init.OwnAddress1 = 138;
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 */
}
static void MX_I2C2_Init(void) {
/* USER CODE BEGIN I2C2_Init 0 */
/* USER CODE END I2C2_Init 0 */
/* USER CODE BEGIN I2C2_Init 1 */
/* USER CODE END I2C2_Init 1 */
hi2c2.Instance = I2C2;
hi2c2.Init.ClockSpeed = 400000;
hi2c2.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c2.Init.OwnAddress1 = 0;
hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c2.Init.OwnAddress2 = 0;
hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c2) != HAL_OK) {
Error_Handler();
}
/* USER CODE BEGIN I2C2_Init 2 */
/* USER CODE END I2C2_Init 2 */
}
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 */
}
static void MX_GPIO_Init(void) {
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin : B1_Pin */
GPIO_InitStruct.Pin = B1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : LD2_Pin */
GPIO_InitStruct.Pin = LD2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(LD2_GPIO_Port, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
void fourtemps_threebytes(uint8_t temps[4], uint8_t out[3]) {
out[0] = temps[0] << 2 | (temps[1] & 0b00111111) >> 4;
out[1] = temps[1] << 4 | (temps[2] & 0b00111111) >> 2;
out[2] = temps[2] << 6 | (temps[3] & 0b00111111);
}
void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c) {
flag = 1;
HAL_I2C_EnableListen_IT(hi2c); // slave is ready again
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
}
void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection,
uint16_t AddrMatchCode) {
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_SET);
if (TransferDirection == I2C_DIRECTION_TRANSMIT) {
HAL_I2C_Slave_Seq_Receive_IT(hi2c, &rx, 1, I2C_NEXT_FRAME);
} else {
uint8_t tx[3] = {0};
if (rx < ceil((float)TEMP_SENSOR_COUNT / 4)) {
fourtemps_threebytes(temps.values + rx * 4, tx);
} else if (rx == 0xFF) {
uint8_t tmp[4] = {temps.max[0], temps.max[1], temps.min[0],
temps.min[1]};
fourtemps_threebytes(tmp, tx);
}
HAL_I2C_Slave_Seq_Transmit_IT(hi2c, tx, 3, I2C_LAST_FRAME);
}
}
void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c) {
HAL_I2C_Slave_Seq_Receive_IT(hi2c, &rx, 1, I2C_FIRST_FRAME);
}
void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c) {}
void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c) {
HAL_UART_Transmit(&huart2, (uint8_t *)"ERROR", 5, 10);
}
/* USER CODE END 4 */
void Error_Handler(void) {
/* 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
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, tex: printf("Wrong parameters value: file %s on line
%d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/