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STM32F103 UART interrupt not working
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2024-01-23 03:04 AM
Hello, I'm building a project where I will use CAN, UART and a TIMER. All of these work with an interrupt. How it works: I get data via CAN and use a TIMER to send a Request on the CANbus. With the UART I need to receive some commands that will trigger some functions. I have provided my code. In this code everything is working except for the UART interrupt. I had a different project with UART where everything was in the main, so I copied that to see if that is working, but it doesn't work. The UART interrupt is not getting triggered, but in the separate project it is working where I only use UART. What is wrong?
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2023 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 ------------------------------------------------------------------*/
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <engine_control.h>
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
// Uncomment the next line to enable debug prints
//#define DEBUGG
#ifdef DEBUGG
#define DebugPrint(fmt, ...) printf(fmt, ##__VA_ARGS__)
#else
#define DebugPrint(fmt, ...)
#endif
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
CAN_HandleTypeDef hcan;
TIM_HandleTypeDef htim14;
UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;
/* USER CODE BEGIN PV */
CAN_RxHeaderTypeDef can_rxheader; //CAN Bus Receive Header
CAN_TxHeaderTypeDef can_txheader; //CAN Bus Transmit Header
uint8_t can_rx[8]; //CAN Bus Receive Buffer
//char received_char; // RS232 received
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_CAN_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_USART2_UART_Init(void);
static void MX_TIM14_Init(void);
/* USER CODE BEGIN PFP */
// Enable Serial print via USART1
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif
PUTCHAR_PROTOTYPE {
HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
return ch;
}
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
//+++++++++++++++++++++++
#define BUFFER_SIZE 50
#define XYZ_BUFFER_SIZE 5
// Global variables
char received_char;
char message_buffer[BUFFER_SIZE];
uint8_t message_index = 0;
uint8_t message_type = 0; // 0: No message, 1: X, 2: Y, 3: Z, 4: Array
// Ring buffer for X, Y, Z messages
char xyz_ring_buffer[XYZ_BUFFER_SIZE];
volatile uint8_t xyz_ring_head = 0;
volatile uint8_t xyz_ring_tail = 0;
uint8_t xyz_buffer_count = 0;
// Ring buffer for character array message
char array_ring_buffer[BUFFER_SIZE];
volatile uint8_t array_ring_head = 0;
volatile uint8_t array_ring_tail = 0;
uint8_t array_buffer_count = 0;
//uint8_t tx_battery_data[] = {100, 49, 50, 44, 50, 103};
//uint8_t tx_fuel_data[] = {101, 53, 65, 44, 49, 142};
//uint8_t tx_hour_data[] = {102, 51, 49, 50, 57, 44, 50, 53, 60};
//uint8_t tx_rpm_data[] = {103, 49, 53, 51, 56, 44, 54, 51};
uint8_t tx_data[] = { 100, 49, 50, 46, 50, 101, 53, 56, 46, 52, 102, 51, 49, 50,
57, 46, 50, 53, 103, 49, 53, 51, 56, 46, 54, 195 };
uint8_t tx_status[2] = { 3, 9 };
uint8_t tx_alarm[2] = { 37, 251 };
double voltage = 12.2;
double fuel = 87.19;
double hour = 51427.75;
double rpm = 1409.792;
double test[4];
// Reset ring buffer
void UART_reset_xyz() {
xyz_ring_head = 0;
xyz_ring_tail = 0;
}
// Function to handle UART error
void UART_Error_Handler(void) {
// Toggle led1 when UART error occurred
HAL_GPIO_TogglePin(GPIOF, LED1_Pin);
}
// UART callback function
void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
if (huart->Instance == USART2) {
// Check if there's an overrun error
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE)) {
__HAL_UART_CLEAR_FLAG(huart, UART_FLAG_ORE); // Clear the overrun error flag
UART_Error_Handler();
}
// Check if there's a framing error
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE)) {
__HAL_UART_CLEAR_FLAG(huart, UART_FLAG_FE); // Clear the framing error flag
UART_Error_Handler();
}
// Check if there's a noise error
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE)) {
__HAL_UART_CLEAR_FLAG(huart, UART_FLAG_NE); // Clear the noise error flag
UART_Error_Handler();
}
// Check if there's a parity error
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE)) {
__HAL_UART_CLEAR_FLAG(huart, UART_FLAG_PE); // Clear the parity error flag
UART_Error_Handler();
}
}
}
// Calculate the CRC-8 for checksum
uint8_t calculate_CRC8(const uint8_t *data, size_t length) {
uint8_t crc = 0;
for (size_t i = 0; i < length; i++) {
crc ^= data[i];
for (int j = 0; j < 8; j++) {
if (crc & 0x80) {
crc = (crc << 1) ^ 0x07; // Polynomial for CRC-8 (0x07)
} else {
crc = crc << 1;
}
}
}
return crc;
}
// Function to convert double to ASCII characters
void double_to_ASCII(double value, char *buffer, uint8_t *index) {
uint8_t len = snprintf(NULL, 0, "%.2f", value); // Determine the length of the ASCII representation
snprintf(&buffer[*index], len + 1, "%.2f", value); // Convert double to ASCII and store in the buffer
*index += len; // Update the index to point to the next position in the buffer
}
// Function to send data over UART
void send_double_array_UART(double *values, uint8_t num_values) {
char buffer[100]; // Adjust buffer size based on the maximum possible size needed
uint8_t index = 0; // Initialize the index for buffer position
uint8_t identifier = 100; // Initialize the identifier starting from 100
for (uint8_t i = 0; i < num_values; ++i) {
buffer[index++] = identifier++; // Add the identifier before each double
double_to_ASCII(values[i], buffer, &index);
// if (i != num_values - 1) {
// buffer[index++] = ','; // Add a delimiter between values (comma in this case)
// }
}
// Calculate CRC8 for the entire buffer (excluding the last character, which will be the CRC8)
uint8_t crc = calculate_CRC8((uint8_t *)buffer, index);
buffer[index++] = crc; // Convert CRC8 value to ASCII and add to buffer
// buffer[index] = '\0'; // Add a null terminator to mark the end of the string
// Send the string over UART
HAL_UART_Transmit(&huart2, (uint8_t *)buffer, strlen(buffer), HAL_MAX_DELAY);
}
// Send message UART
void send_msg(uint8_t *data, uint16_t size, const char *data_name) {
while (HAL_UART_GetState(&huart2) == HAL_UART_STATE_READY)
;
if (HAL_UART_Transmit_IT(&huart2, data, size) == HAL_OK) {
printf("Send %s data\r\n", data_name);
} else {
HAL_UART_ErrorCallback(&huart2);
DebugPrint("Failed to send %s data\r\n", data_name);
}
}
// Send data over UART
void UART_send_data(void) {
send_msg(tx_data, sizeof(tx_data), "Data");
}
// Send status over UART
void UART_send_status(void) {
send_msg(tx_status, sizeof(tx_status), "Status");
}
// Send alarm over UART
void UART_send_alarm(void) {
send_msg(tx_alarm, sizeof(tx_alarm), "Alarm");
}
void UART_process_xyz() {
// Data available in the buffer
if (xyz_ring_tail != xyz_ring_head) {
DebugPrint("Received: %c\r\n", xyz_ring_buffer[xyz_ring_tail]);
switch (xyz_ring_buffer[xyz_ring_tail]) {
case 'X':
// UART_send_data();
send_double_array_UART(test, sizeof(test) / sizeof(test[0]));
DebugPrint("Data request \r\n");
break;
case 'Y':
UART_send_alarm();
DebugPrint("Alarm request \r\n");
break;
case 'Z':
UART_send_status();
DebugPrint("Status request \r\n");
break;
default:
printf("Incorrect UART message \r\n");
}
xyz_ring_tail = (xyz_ring_tail + 1) % XYZ_BUFFER_SIZE;
xyz_buffer_count--;
}
}
//void UART_process_array() {
//
//// char data[];
//
// if (array_ring_tail != array_ring_head) {
//
// char array_message = array_ring_buffer[array_ring_tail];
// // Process arrayMessage as needed
// array_ring_tail = (array_ring_tail + 1) % BUFFER_SIZE;
// array_buffer_count--;
// }
//
//}
// UART interrupt
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
printf("RS232 Interrupt \r\n");
// Check if correct UART is triggered
if (huart->Instance == USART2) {
// Check if UART is received correctly
if (HAL_UART_Receive_IT(&huart2, (uint8_t*)&received_char, 1)
== HAL_OK) {
// Check for the type of message
switch (message_type) {
// No message received yet
case 0:
// Decide the message type
if (received_char == 'X') {
message_type = 1;
} else if (received_char == 'Y') {
message_type = 2;
} else if (received_char == 'Z') {
message_type = 3;
} else {
// Data message received
message_type = 4;
message_index = 0;
message_buffer[message_index++] = received_char;
}
break;
case 1: // X message
case 2: // Y message
case 3: // Z message
// Store X, Y, Z messages in the ring buffer
if (xyz_buffer_count < XYZ_BUFFER_SIZE) {
xyz_ring_buffer[xyz_ring_head] = received_char;
xyz_ring_head = (xyz_ring_head + 1) % XYZ_BUFFER_SIZE;
xyz_buffer_count++;
} else {
// UART_reset_xyz();
// Overwrite the last received character in the xyzeRingBuffer
xyz_ring_buffer[xyz_ring_tail] = received_char;
xyz_ring_tail = (xyz_ring_tail + 1) % XYZ_BUFFER_SIZE;
}
break;
// Array message
case 4:
// Store array message in the ring buffer
if (array_buffer_count < BUFFER_SIZE) {
array_ring_buffer[array_ring_head] = received_char;
array_ring_head = (array_ring_head + 1) % BUFFER_SIZE;
array_buffer_count++;
} else {
array_ring_tail = 0;
array_ring_head = 0;
array_buffer_count = 0;
}
if (message_index < BUFFER_SIZE - 1) {
message_buffer[message_index++] = received_char;
} else {
// Process complete array message (message_buffer contains the data)
message_type = 0; // Reset message type
}
break;
}
} else {
// Error handler
HAL_UART_ErrorCallback(&huart2);
DebugPrint("UART no Data \r\n");
}
// Restart reception
HAL_UART_Receive_IT(&huart2, (uint8_t*)&received_char, 1);
}
}
//+++++++++++++++++++++++
//uint8_t rx_buff[2];
//-----------------------------------
// UART interrupt
//void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
//
// printf("UART interrupt");
//
// HAL_UART_Receive_IT(&huart2, rx_buff, 2);
//
// // Check if correct UART is triggered
// if (huart->Instance == USART2) {
//
// printf("RS232 MSG \r\n");
//
// // Check if UART is received correctly
// if (HAL_UART_Receive_IT(&huart2, (uint8_t*)&received_char, 1) == HAL_OK) {
// // Store received characters in the ring buffer
// queue_request(&received_char);
//
// // Restart reception
// HAL_UART_Receive_IT(&huart2, (uint8_t*)&received_char, 1);
// }
//
// // Restart reception
// HAL_UART_Receive_IT(&huart2, (uint8_t*)&received_char, 1);
// }
//}
//-----------------------------------
volatile uint8_t request_timer_flag = 0;
// Callback timer interrupt for sending request on CANbus
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
if (htim == &htim14 ) {
HAL_GPIO_TogglePin(GPIOF, LED1_Pin);
request_timer_flag = 1;
}
}
/* 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();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_CAN_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_TIM14_Init();
/* USER CODE BEGIN 2 */
// UART interrupt
HAL_UART_Receive_IT(&huart2, (uint8_t*)&received_char, 1);
// Start timer
HAL_TIM_Base_Start_IT(&htim14);
// CAN filters
CAN_filter(0, FILTER_ID1, FILTER_MASK1, CAN_RX_FIFO0, &hcan);
CAN_filter(1, FILTER_ID2, FILTER_MASK2, CAN_RX_FIFO0, &hcan);
CAN_filter(2, FILTER_ID3, FILTER_MASK3, CAN_RX_FIFO0, &hcan);
CAN_filter(3, FILTER_ID4, FILTER_MASK4, CAN_RX_FIFO1, &hcan);
CAN_filter(4, FILTER_ID5, FILTER_MASK5, CAN_RX_FIFO1, &hcan);
CAN_filter(5, FILTER_ID6, FILTER_MASK6, CAN_RX_FIFO1, &hcan);
CAN_filter(6, FILTER_ID7, FILTER_MASK7, CAN_RX_FIFO1, &hcan);
printf("test \r\n");
// Enable CAN
if (HAL_CAN_Start(&hcan) != HAL_OK) {
CAN_restart(&hcan);
}
// Send out name of this node
if (CAN_name() == NAME_ERROR) {
CAN_restart(&hcan);
}
// CAN interrupts
HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO0_MSG_PENDING);
HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO1_MSG_PENDING);
HAL_CAN_ActivateNotification(&hcan, CAN_IT_ERROR);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1) {
if (request_timer_flag) {
request_PGN(TOTAL_ENGINE_HOUR);
request_timer_flag = 0; // Reset flag
}
// Process incoming CAN messages
CAN_process_msg();
// TEST CODE
test[0] = voltage;
test[1] = fuel;
test[2] = hour;
test[3] = rpm;
UART_process_xyz();
// ++++++
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief CAN Initialization Function
* @PAram None
* @retval None
*/
static void MX_CAN_Init(void)
{
/* USER CODE BEGIN CAN_Init 0 */
/* USER CODE END CAN_Init 0 */
/* USER CODE BEGIN CAN_Init 1 */
/* USER CODE END CAN_Init 1 */
hcan.Instance = CAN1;
hcan.Init.Prescaler = 8;
hcan.Init.Mode = CAN_MODE_NORMAL;
hcan.Init.SyncJumpWidth = CAN_SJW_1TQ;
hcan.Init.TimeSeg1 = CAN_BS1_15TQ;
hcan.Init.TimeSeg2 = CAN_BS2_2TQ;
hcan.Init.TimeTriggeredMode = DISABLE;
hcan.Init.AutoBusOff = DISABLE;
hcan.Init.AutoWakeUp = DISABLE;
hcan.Init.AutoRetransmission = DISABLE;
hcan.Init.ReceiveFifoLocked = DISABLE;
hcan.Init.TransmitFifoPriority = DISABLE;
if (HAL_CAN_Init(&hcan) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN CAN_Init 2 */
/* USER CODE END CAN_Init 2 */
}
/**
* @brief TIM14 Initialization Function
* @PAram None
* @retval None
*/
static void MX_TIM14_Init(void)
{
/* USER CODE BEGIN TIM14_Init 0 */
/* USER CODE END TIM14_Init 0 */
/* USER CODE BEGIN TIM14_Init 1 */
/* USER CODE END TIM14_Init 1 */
htim14.Instance = TIM14;
htim14.Init.Prescaler = 8000;
htim14.Init.CounterMode = TIM_COUNTERMODE_UP;
htim14.Init.Period = 9999;
htim14.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim14.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim14) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM14_Init 2 */
/* USER CODE END TIM14_Init 2 */
}
/**
* @brief USART1 Initialization Function
* @PAram None
* @retval None
*/
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 = 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;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_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 */
}
Solved! Go to Solution.
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STM32F1 Series
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2024-01-23 04:27 AM
I got it working. I didn't look at the PIN settings. The receive pin (PA3) of USART2 was set to GPIO mode, but it should be input mode.
6 REPLIES 6
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2024-01-23 03:07 AM
Hello,
Did you activate the interrupt for the UART? (check if the NVIC interrupt line for your UART is configured).
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2024-01-23 03:42 AM
Yes, I activated the interrupt for UART, CAN, TIMER.
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2024-01-23 04:02 AM
Try to isolate UART functions and built a simple application with only UART and see if the issue still happen.
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2024-01-23 04:13 AM
So I followed this link https://wiki.st.com/stm32mcu/wiki/Getting_started_with_UART#UART_with_Interrupt to test if it was working, but this also doesn't work. The interrupt won't trigger. Below is the code.
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <engine_control.h>
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
// Uncomment the next line to enable debug prints
//#define DEBUGG
#ifdef DEBUGG
#define DebugPrint(fmt, ...) printf(fmt, ##__VA_ARGS__)
#else
#define DebugPrint(fmt, ...)
#endif
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
CAN_HandleTypeDef hcan;
TIM_HandleTypeDef htim14;
UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;
/* USER CODE BEGIN PV */
CAN_RxHeaderTypeDef can_rxheader; //CAN Bus Receive Header
CAN_TxHeaderTypeDef can_txheader; //CAN Bus Transmit Header
uint8_t can_rx[8]; //CAN Bus Receive Buffer
//char received_char; // RS232 received
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_CAN_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_USART2_UART_Init(void);
static void MX_TIM14_Init(void);
/* USER CODE BEGIN PFP */
// Enable Serial print via USART1
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif
PUTCHAR_PROTOTYPE {
HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
return ch;
}
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint8_t rx_buff[2];
//-----------------------------------
// UART interrupt
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
HAL_GPIO_TogglePin(GPIOF, LED2_Pin);
printf("UART interrupt");
// Check if correct UART is triggered
if (huart->Instance == USART2) {
printf("RS232 MSG \r\n");
}
HAL_UART_Receive_IT(&huart2, rx_buff, 2);
}
//-----------------------------------
volatile uint8_t request_timer_flag = 0;
// Callback timer interrupt for sending request on CANbus
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
if (htim == &htim14 ) {
HAL_GPIO_TogglePin(GPIOF, LED1_Pin);
request_timer_flag = 1;
}
}
/* 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();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_CAN_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_TIM14_Init();
/* USER CODE BEGIN 2 */
// UART interrupt
HAL_UART_Receive_IT(&huart2, rx_buff, 2);
// Start timer
HAL_TIM_Base_Start_IT(&htim14);
// CAN filters
CAN_filter(0, FILTER_ID1, FILTER_MASK1, CAN_RX_FIFO0, &hcan);
CAN_filter(1, FILTER_ID2, FILTER_MASK2, CAN_RX_FIFO0, &hcan);
CAN_filter(2, FILTER_ID3, FILTER_MASK3, CAN_RX_FIFO0, &hcan);
CAN_filter(3, FILTER_ID4, FILTER_MASK4, CAN_RX_FIFO1, &hcan);
CAN_filter(4, FILTER_ID5, FILTER_MASK5, CAN_RX_FIFO1, &hcan);
CAN_filter(5, FILTER_ID6, FILTER_MASK6, CAN_RX_FIFO1, &hcan);
CAN_filter(6, FILTER_ID7, FILTER_MASK7, CAN_RX_FIFO1, &hcan);
printf("test \r\n");
// Enable CAN
if (HAL_CAN_Start(&hcan) != HAL_OK) {
CAN_restart(&hcan);
}
// Send out name of this node
if (CAN_name() == NAME_ERROR) {
CAN_restart(&hcan);
}
// CAN interrupts
HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO0_MSG_PENDING);
HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO1_MSG_PENDING);
HAL_CAN_ActivateNotification(&hcan, CAN_IT_ERROR);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1) {
if (request_timer_flag) {
request_PGN(TOTAL_ENGINE_HOUR);
request_timer_flag = 0; // Reset flag
}
// Process incoming CAN messages
CAN_process_msg();
// Process RS232 communication
// RS232_process_request();
// printf("STATE MAIN: %d \r\n", engine_info.engine_state);
// printf("AMBER: %d \r\n", active_lamp.amber);
// printf("MIL: %d \r\n", active_lamp.mil);
// printf("PROTECT: %d \r\n", active_lamp.protect);
// printf("RED: %d \r\n", active_lamp.red);
// printf("\r\n");
// printf("ALARMEN: %d \r\n", engine_info.alarm);
// printf("\r\n");
// printf("STATE: %d \r\n", engine_data.engine_state);
// printf("\r\n");
// printf("++++++BATT+++++++: %0.2f \r\n", engine_data.battery_voltage);
// printf("++++++FUEL+++++++: %0.2f \r\n", engine_data.fuel_level);
// printf("++++++HOUR+++++++: %0.2f \r\n", engine_data.engine_hour);
// printf("++++++SPEED++++++: %0.2f \r\n", engine_data.engine_speed);
// printf("++++++OIL++++++++: %0.2f \r\n", engine_data.oil_pressure);
// printf("++++++TEMP+++++++: %0.2f \r\n", engine_data.engine_temperature);
// printf("++++++ECO++++++++: %0.2f \r\n", engine_data.fuel_economy);
// printf("++++++STATE++++++: %d \r\n", engine_data.engine_state);
// printf("\r\n");
// printf("\r\n");
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief CAN Initialization Function
* @PAram None
* @retval None
*/
static void MX_CAN_Init(void)
{
/* USER CODE BEGIN CAN_Init 0 */
/* USER CODE END CAN_Init 0 */
/* USER CODE BEGIN CAN_Init 1 */
/* USER CODE END CAN_Init 1 */
hcan.Instance = CAN1;
hcan.Init.Prescaler = 8;
hcan.Init.Mode = CAN_MODE_NORMAL;
hcan.Init.SyncJumpWidth = CAN_SJW_1TQ;
hcan.Init.TimeSeg1 = CAN_BS1_15TQ;
hcan.Init.TimeSeg2 = CAN_BS2_2TQ;
hcan.Init.TimeTriggeredMode = DISABLE;
hcan.Init.AutoBusOff = DISABLE;
hcan.Init.AutoWakeUp = DISABLE;
hcan.Init.AutoRetransmission = DISABLE;
hcan.Init.ReceiveFifoLocked = DISABLE;
hcan.Init.TransmitFifoPriority = DISABLE;
if (HAL_CAN_Init(&hcan) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN CAN_Init 2 */
/* USER CODE END CAN_Init 2 */
}
/**
* @brief TIM14 Initialization Function
* @PAram None
* @retval None
*/
static void MX_TIM14_Init(void)
{
/* USER CODE BEGIN TIM14_Init 0 */
/* USER CODE END TIM14_Init 0 */
/* USER CODE BEGIN TIM14_Init 1 */
/* USER CODE END TIM14_Init 1 */
htim14.Instance = TIM14;
htim14.Init.Prescaler = 8000;
htim14.Init.CounterMode = TIM_COUNTERMODE_UP;
htim14.Init.Period = 9999;
htim14.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim14.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim14) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM14_Init 2 */
/* USER CODE END TIM14_Init 2 */
}
/**
* @brief USART1 Initialization Function
* @PAram None
* @retval None
*/
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 = 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;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_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 */
}
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2024-01-23 04:27 AM
I got it working. I didn't look at the PIN settings. The receive pin (PA3) of USART2 was set to GPIO mode, but it should be input mode.
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2024-01-23 04:51 AM
Well, that's why you need to isolate the function having the issue to surround it quickly 😉.
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