/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2026 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 "dma.h" #include "iwdg.h" #include "spi.h" #include "tim.h" #include "usart.h" #include "gpio.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include #include #include "CH390.h" #include "CH390_Interface.h" #include "SEGGER_RTT.h" #include "config.h" #include "flash_param.h" #include "ethernetif.h" #include "ch390_runtime.h" #include "lwip/init.h" #include "lwip/timeouts.h" #include "tcp_client.h" #include "tcp_server.h" #include "uart_trans.h" /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*/ /* USER CODE BEGIN PD */ /* LED 指示灯 */ #define LED_PIN GPIO_PIN_13 #define LED_PORT GPIOC /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*/ /* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ static volatile uint16_t g_led_blink_ticks = 0; static uint8_t g_clock_fallback_to_hsi = 0u; volatile uint8_t g_uart1_rx_probe_byte = 0u; static void App_ForwardTcpPair(void) { uint8_t buffer[256]; int len; len = tcp_server_recv(buffer, sizeof(buffer), 0u); if (len > 0) { (void)tcp_client_send(buffer, (uint16_t)len); } len = tcp_client_recv(buffer, sizeof(buffer), 0u); if (len > 0) { (void)tcp_server_send(buffer, (uint16_t)len); } } /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* USER CODE BEGIN PFP */ static void LED_Init(void); static void LED_StartBlink(void); static void BootDiag_ReportCh390(void); static void App_PollUart1ConfigRx(void); static void App_Init(void); static void App_Poll(void); /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ /** * @brief LED 初始化（点亮表示系统启动） */ static void LED_Init(void) { /* LED 灭（PC13 高电平灭，低电平亮） */ HAL_GPIO_WritePin(LED_PORT, LED_PIN, GPIO_PIN_SET); } static void LED_StartBlink(void) { if (HAL_TIM_Base_Start_IT(&htim4) != HAL_OK) { Error_Handler(); } } /** * @brief LED 闪烁（用于指示系统运行状态） */ void LED_Toggle(void) { HAL_GPIO_TogglePin(LED_PORT, LED_PIN); } void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { if (htim->Instance == TIM4) { g_led_blink_ticks++; if (g_led_blink_ticks >= 1000u) { g_led_blink_ticks = 0u; LED_Toggle(); } } } static void BootDiag_ReportCh390(void) { ch390_diag_t diag; const device_config_t *cfg = config_get(); uint8_t mac_hw[6]; ch390_runtime_get_diag(&diag); ch390_get_mac(mac_hw); SEGGER_RTT_printf(0, "CH390 VID=0x%04X PID=0x%04X REV=0x%02X LINK=%u MAC=%02X:%02X:%02X:%02X:%02X:%02X\r\n", diag.vendor_id, diag.product_id, diag.revision, diag.link_up, mac_hw[0], mac_hw[1], mac_hw[2], mac_hw[3], mac_hw[4], mac_hw[5]); SEGGER_RTT_printf(0, "NET cfg IP=%u.%u.%u.%u MASK=%u.%u.%u.%u GW=%u.%u.%u.%u SrvPort=%u Cli=%u.%u.%u.%u:%u\r\n", cfg->ip[0], cfg->ip[1], cfg->ip[2], cfg->ip[3], cfg->mask[0], cfg->mask[1], cfg->mask[2], cfg->mask[3], cfg->gw[0], cfg->gw[1], cfg->gw[2], cfg->gw[3], cfg->server_port, cfg->remote_ip[0], cfg->remote_ip[1], cfg->remote_ip[2], cfg->remote_ip[3], cfg->remote_port); } static void App_PollUart1ConfigRx(void) { while (__HAL_UART_GET_FLAG(&huart1, UART_FLAG_RXNE) != RESET) { uint8_t byte = (uint8_t)(huart1.Instance->DR & 0xFFu); config_uart_rx_byte(byte); } } static void App_Init(void) { device_config_t *cfg_mut; const device_config_t *cfg; ip4_addr_t ipaddr; ip4_addr_t netmask; ip4_addr_t gateway; uart_config_t uart_cfg; tcp_server_config_t server_cfg; tcp_client_config_t client_cfg; config_init(); cfg_mut = config_get_mutable(); cfg_mut->dhcp_enable = 0u; cfg_mut->ip[0] = 192u; cfg_mut->ip[1] = 168u; cfg_mut->ip[2] = 31u; cfg_mut->ip[3] = 100u; cfg_mut->mask[0] = 255u; cfg_mut->mask[1] = 255u; cfg_mut->mask[2] = 255u; cfg_mut->mask[3] = 0u; cfg_mut->gw[0] = 192u; cfg_mut->gw[1] = 168u; cfg_mut->gw[2] = 31u; cfg_mut->gw[3] = 1u; cfg_mut->server_port = 8080u; cfg_mut->remote_port = 8081u; cfg = config_get(); uart_trans_init(); uart_cfg.baudrate = cfg->uart2_baudrate; uart_cfg.data_bits = cfg->uart2_databits; uart_cfg.stop_bits = cfg->uart2_stopbits; uart_cfg.parity = cfg->uart2_parity; uart_trans_config(UART_CHANNEL_SERVER, &uart_cfg); uart_cfg.baudrate = cfg->uart3_baudrate; uart_cfg.data_bits = cfg->uart3_databits; uart_cfg.stop_bits = cfg->uart3_stopbits; uart_cfg.parity = cfg->uart3_parity; uart_trans_config(UART_CHANNEL_CLIENT, &uart_cfg); uart_trans_start(UART_CHANNEL_SERVER); uart_trans_start(UART_CHANNEL_CLIENT); SEGGER_RTT_Init(); SEGGER_RTT_WriteString(0, "\r\nTCP2UART boot\r\n"); if (g_clock_fallback_to_hsi != 0u) { SEGGER_RTT_WriteString(0, "WARN: HSE start failed, fallback to HSI PLL\r\n"); } lwip_init(); IP4_ADDR(&ipaddr, cfg->ip[0], cfg->ip[1], cfg->ip[2], cfg->ip[3]); IP4_ADDR(&netmask, cfg->mask[0], cfg->mask[1], cfg->mask[2], cfg->mask[3]); IP4_ADDR(&gateway, cfg->gw[0], cfg->gw[1], cfg->gw[2], cfg->gw[3]); lwip_netif_init(&ipaddr, &netmask, &gateway); BootDiag_ReportCh390(); server_cfg.port = cfg->server_port; server_cfg.auto_reconnect = true; (void)tcp_server_init(&server_cfg); (void)tcp_server_start(); memcpy(client_cfg.server_ip, cfg->remote_ip, sizeof(client_cfg.server_ip)); client_cfg.local_port = 8081u; client_cfg.server_port = cfg->remote_port; client_cfg.auto_reconnect = true; client_cfg.reconnect_interval_ms = cfg->reconnect_interval; (void)tcp_client_init(&client_cfg); (void)tcp_client_connect(); SEGGER_RTT_WriteString(0, "TCP bridge enabled\r\n"); /* Arm UART1 RX interrupt path so config commands can enter via USART1. */ if (HAL_UART_Receive_IT(&huart1, (uint8_t *)&g_uart1_rx_probe_byte, 1u) != HAL_OK) { Error_Handler(); } } static void App_Poll(void) { ethernetif_poll(); ethernetif_check_link(); sys_check_timeouts(); tcp_client_poll(); App_ForwardTcpPair(); uart_trans_poll(); App_PollUart1ConfigRx(); config_poll(); if (config_is_reset_requested()) { config_clear_reset_requested(); NVIC_SystemReset(); } if (hiwdg.Instance == IWDG) { HAL_IWDG_Refresh(&hiwdg); } } /* 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_DMA_Init(); // MX_IWDG_Init(); MX_USART1_UART_Init(); MX_USART2_UART_Init(); MX_USART3_UART_Init(); MX_SPI1_Init(); MX_TIM4_Init(); /* USER CODE BEGIN 2 */ /* LED 初始化 */ LED_Init(); LED_StartBlink(); App_Init(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ App_Poll(); } /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; g_clock_fallback_to_hsi = 0u; /** Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.LSIState = RCC_LSI_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) { /* * Some bring-up boards fail to start the external crystal cleanly. * Fall back to HSI-based PLL so the firmware can still boot and expose * RTT / debugger evidence instead of trapping during clock init. */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSEState = RCC_HSE_OFF; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.LSIState = RCC_LSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } g_clock_fallback_to_hsi = 1u; } /** 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(); } } /* USER CODE BEGIN 4 */ /** * @brief 重定向 printf 到 UART1（调试输出） */ #ifdef __GNUC__ int _write(int file, char *ptr, int len) { (void)file; return (int)SEGGER_RTT_Write(0, ptr, (unsigned)len); } #else int fputc(int ch, FILE *f) { (void)f; SEGGER_RTT_PutChar(0, (char)ch); return ch; } #endif void Debug_TrapWithRttHint(const char *tag) { SEGGER_RTT_WriteString(0, "\r\nTRAP: "); SEGGER_RTT_WriteString(0, tag); SEGGER_RTT_WriteString(0, "\r\n"); __disable_irq(); __BKPT(0); while (1) { } } /* 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 */ Debug_TrapWithRttHint("Error_Handler"); /* 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 */ (void)file; (void)line; Debug_TrapWithRttHint("assert_failed"); /* 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 */