/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 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 ------------------------------------------------------------------*/ #include "main.h" #include "adc.h" #include "spi.h" #include "tim.h" #include "usart.h" #include "gpio.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include #include "miscdev.h" #include "sht20.h" #include "w25q.h" #include "core_json.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 ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ uint8_t g_rxch; /* HAL_UART_Receive_IT() receive 1 byte buffer */ uint8_t g_rxbuf[256]; /* UART1 receive data buffer */ uint8_t g_rxbytes; /* UART1 receive data bytes */ uint32_t g_rxTick; void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { if( huart == &huart1 ) { /* clear buffer if it's full */ if( g_rxbytes >= sizeof(g_rxbuf) ) g_rxbytes = 0; /* Receive a byte data by interrupter */ HAL_UART_Receive_IT(huart, &g_rxch, 1); /* Put this data into receive buffer */ g_rxbuf[g_rxbytes++] = g_rxch; /* Get current receive data tick */ g_rxTick = HAL_GetTick(); } } /* parser and control the Leds and relay */ int parser_command(char *json_str) { const char *fields[] = {"RedLed", "GreenLed", "BlueLed", "Relay"}; char *value; size_t value_len = 0; int status; if (JSON_Validate(json_str, strlen(json_str) ) != JSONSuccess) { printf("Invalid JSON: %s\r\n", json_str); return -1; } for (int i = 0; i < sizeof(fields) / sizeof(fields[0]); i++) { if (JSONSuccess == JSON_Search(json_str, strlen(json_str), fields[i], strlen(fields[i]), &value, &value_len)) { if ( !strncasecmp(value, "On", value_len) ) status = 1; else if ( !strncasecmp(value, "Off", value_len) ) status = 0; if ( !strcmp(fields[i], "RedLed") ) { turn_led(Led_R, status); } else if ( !strcmp(fields[i], "GreenLed") ) { turn_led(Led_G, status); } else if ( !strcmp(fields[i], "BlueLed") ) { turn_led(Led_B, status); } else if ( !strcmp(fields[i], "Relay") ) { turn_relay(Relay1, status); } } } return 0; } /* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */ int main(void) { /* USER CODE BEGIN 1 */ int rv; float temperature, humidity; char pack_buf[128]; /* 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_ADC1_Init(); MX_TIM6_Init(); MX_TIM1_Init(); MX_SPI1_Init(); /* USER CODE BEGIN 2 */ beep_start(2, 300); /* Must Enable UART3 receive interrupter here */ HAL_UART_Receive_IT(&huart1 , &g_rxch, 1); printf("Remote monitor and control program\r\n"); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { const uint32_t sample_interval = 5000; /* sample interval time 5000ms */ static uint32_t last_tick = 0; /* last sample time */ /* check sample time arrive and start report */ if ((HAL_GetTick() - last_tick) >= sample_interval) { rv = sht20_sample_TrH(&temperature, &humidity); if( !rv ) { last_tick = HAL_GetTick(); memset(pack_buf, 0, sizeof(pack_buf)); snprintf(pack_buf, sizeof(pack_buf), "{\"Temperature\":\"%.02f\", \"Humidity\":\"%.02f\"}\r\n", temperature, humidity); HAL_UART_Transmit(&huart1, (uint8_t *)pack_buf, strlen(pack_buf), 0xFFFF); } } /* UART receive data and receive over */ if( g_rxbytes > 0 && (HAL_GetTick()-g_rxTick)>=2) { parser_command((char *)g_rxbuf); memset(g_rxbuf, 0, sizeof(g_rxbuf)); g_rxbytes = 0; } /* 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}; /** Configure the main internal regulator output voltage */ if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK) { Error_Handler(); } /** 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.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 1; RCC_OscInitStruct.PLL.PLLN = 20; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7; RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; 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_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK) { Error_Handler(); } } /* USER CODE BEGIN 4 */ /* USER CODE END 4 */ /** * @brief This function is executed in case of error occurrence. * @retval None */ void Error_Handler(void) { /* USER CODE BEGIN Error_Handler_Debug */ /* User can add his own implementation to report the HAL error return state */ __disable_irq(); while (1) { } /* 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 */