#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stm32c0xx_hal.h>
// Define pin assignments
#define LED_RED_PIN GPIO_PIN_4
#define LED_GREEN_PIN GPIO_PIN_11
#define LED_TEAL_PIN GPIO_PIN_9
#define LED_WHITE_PIN GPIO_PIN_15
#define LED_PORT_CLK_ENABLE __HAL_RCC_GPIOA_CLK_ENABLE
UART_HandleTypeDef huart2;
void SystemClock_Config(void);
static void MX_USART2_UART_Init(void);
static void MX_GPIO_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USART2_UART_Init();
char welcome_msg[] = "Input commands: RED_ON/GREEN_ON/TEAL_ON/WHITE_ON or RED_OFF/GREEN_OFF/TEAL_OFF/WHITE_OFF\n";
HAL_UART_Transmit(&huart2, (uint8_t *)welcome_msg, strlen(welcome_msg), 100);
char buffer[32];
memset(buffer, 0, sizeof(buffer));
while (1)
{
// Чтение до символа новой строки или до заполнения буфера
uint16_t i = 0;
char c = 0;
while (i < sizeof(buffer) - 1) {
if (HAL_UART_Receive(&huart2, (uint8_t *)&c, 1, HAL_MAX_DELAY) == HAL_OK) {
if (c == '\n') break; // Прекращаем чтение, если достигнут символ новой строки
buffer[i++] = c;
}
}
buffer[i] = '\0';
// Эхо введенной команды через UART
HAL_UART_Transmit(&huart2, (uint8_t *)buffer, strlen(buffer), 100);
HAL_UART_Transmit(&huart2, (uint8_t *)"\n", 1, 100); // Добавляем перенос строки
// Обработка команд
if (strstr(buffer, "RED_ON")) {
HAL_GPIO_WritePin(GPIOA, LED_RED_PIN, GPIO_PIN_SET);
HAL_UART_Transmit(&huart2, (uint8_t *)"RED_ON\n", strlen("RED_ON\n"), 100);
}
else if (strstr(buffer, "RED_OFF")) {
HAL_GPIO_WritePin(GPIOA, LED_RED_PIN, GPIO_PIN_RESET);
HAL_UART_Transmit(&huart2, (uint8_t *)"RED_OFF\n", strlen("RED_OFF\n"), 100);
}
else if (strstr(buffer, "GREEN_ON")) {
HAL_GPIO_WritePin(GPIOA, LED_GREEN_PIN, GPIO_PIN_SET);
HAL_UART_Transmit(&huart2, (uint8_t *)"GREEN_ON\n", strlen("GREEN_ON\n"), 100);
}
else if (strstr(buffer, "GREEN_OFF")) {
HAL_GPIO_WritePin(GPIOA, LED_GREEN_PIN, GPIO_PIN_RESET);
HAL_UART_Transmit(&huart2, (uint8_t *)"GREEN_OFF\n", strlen("GREEN_OFF\n"), 100);
}
else if (strstr(buffer, "TEAL_ON")) {
HAL_GPIO_WritePin(GPIOA, LED_TEAL_PIN, GPIO_PIN_SET);
HAL_UART_Transmit(&huart2, (uint8_t *)"TEAL_ON\n", strlen("TEAL_ON\n"), 100);
}
else if (strstr(buffer, "TEAL_OFF")) {
HAL_GPIO_WritePin(GPIOA, LED_TEAL_PIN, GPIO_PIN_RESET);
HAL_UART_Transmit(&huart2, (uint8_t *)"TEAL_OFF\n", strlen("TEAL_OFF\n"), 100);
}
else if (strstr(buffer, "WHITE_ON")) {
HAL_GPIO_WritePin(GPIOA, LED_WHITE_PIN, GPIO_PIN_SET);
HAL_UART_Transmit(&huart2, (uint8_t *)"WHITE_ON\n", strlen("WHITE_ON\n"), 100);
}
else if (strstr(buffer, "WHITE_OFF")) {
HAL_GPIO_WritePin(GPIOA, LED_WHITE_PIN, GPIO_PIN_RESET);
HAL_UART_Transmit(&huart2, (uint8_t *)"WHITE_OFF\n", strlen("WHITE_OFF\n"), 100);
}
memset(buffer, 0, sizeof(buffer)); // Очищаем буфер после обработки
}
return 0;
}
/**
@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_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Error_Handler();
}
}
/**
@brief USART2 Initialization Function
@param None
@retval None
*/
static void MX_USART2_UART_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOA_CLK_ENABLE();
// PA2 ------> USART2_TX
// PA3 ------> USART2_RX
GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF1_USART2;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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;
huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart2) != HAL_OK)
{
Error_Handler();
}
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOA_CLK_ENABLE();
// Initialize LED GPIOs
GPIO_InitStruct.Pin = LED_RED_PIN | LED_GREEN_PIN | LED_TEAL_PIN | LED_WHITE_PIN;
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);
// Set all LEDs off initially
HAL_GPIO_WritePin(GPIOA, LED_RED_PIN | LED_GREEN_PIN | LED_TEAL_PIN | LED_WHITE_PIN, GPIO_PIN_RESET);
}
void Error_Handler(void)
{
/* User can add his own implementation to report the HAL error return state */
}
// The following makes printf() write to USART2:
//#define STDOUT_FILENO 1
//#define STDERR_FILENO 2
/*int _write(int file, uint8_t *ptr, int len)
{
switch (file)
{
case STDOUT_FILENO:
HAL_UART_Transmit(&huart2, ptr, len, HAL_MAX_DELAY);
break;
case STDERR_FILENO:
HAL_UART_Transmit(&huart2, ptr, len, HAL_MAX_DELAY);
break;
default:
return -1;
}
return len;
}
*/