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efb88ea367d96cc1a1978bdd5b61272cee5be717
TCP2UART/Core/Src/main.c
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gaoro-xiao efb88ea367 feat(ch390): optimize SPI transfer, MAC fallback, and build settings for V1.0.0 
- increase UART DMA/ring buffer sizes for mux traffic
- switch SPI1 to Mode0 with prescaler /2 and align CubeMX settings
- refactor CH390 memory read/write path with chunked SPI read and HAL bulk write
- fallback to hardware MAC when configured MAC is invalid (all-zero)
- add mux frame RTT logs and remove redundant UART1 polling
- update Keil post-build viewer integration and include build viewer artifacts
- update AT manual with all-zero MAC behavior
2026-04-05 03:49:27 +08:00

557 lines
19 KiB
C
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
*/
/* 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 <stdio.h>
#include <string.h>
#include "CH390.h"
#include "CH390_Interface.h"
#include "SEGGER_RTT.h"
#include "config.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 define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define LED_PIN GPIO_PIN_13
#define LED_PORT GPIOC
#define APP_ROUTE_BUFFER_SIZE 256u
#define STACK_GUARD_WORD 0xA5A5A5A5u
/* USER CODE END PD */
/* 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 uint8_t g_stack_guard_reported = 0u;
static uint8_t g_mux_response_frame[272];
static uint8_t g_links_started = 0u;
/* 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_Init(void);
static void App_Poll(void);
static void App_ConfigureLinks(const device_config_t *cfg);
static void App_RouteRawUartTraffic(void);
static void App_RouteMuxUartTraffic(void);
static void App_RouteTcpTraffic(void);
static void StackGuard_Init(void);
static void StackGuard_Check(void);
static void App_SendToUart(uint8_t uart_index, uint8_t src_id, uint8_t dst_mask, const uint8_t *data, uint16_t len);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
extern uint32_t Stack_Mem[];
static void LED_Init(void)
{
HAL_GPIO_WritePin(LED_PORT, LED_PIN, GPIO_PIN_SET);
}
static void StackGuard_Init(void)
{
Stack_Mem[0] = STACK_GUARD_WORD;
g_stack_guard_reported = 0u;
}
static void StackGuard_Check(void)
{
if (Stack_Mem[0] != STACK_GUARD_WORD) {
if (g_stack_guard_reported == 0u) {
g_stack_guard_reported = 1u;
SEGGER_RTT_WriteString(0, "ERROR: Main stack guard overwritten\r\n");
}
__disable_irq();
NVIC_SystemReset();
}
}
static void LED_StartBlink(void)
{
if (HAL_TIM_Base_Start_IT(&htim4) != HAL_OK) {
Error_Handler();
}
}
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 MUX=%u\r\n",
cfg->net.ip[0], cfg->net.ip[1], cfg->net.ip[2], cfg->net.ip[3],
cfg->net.mask[0], cfg->net.mask[1], cfg->net.mask[2], cfg->net.mask[3],
cfg->net.gw[0], cfg->net.gw[1], cfg->net.gw[2], cfg->net.gw[3],
cfg->mux_mode);
}
static void App_ConfigureLinks(const device_config_t *cfg)
{
tcp_server_instance_config_t server_cfg;
tcp_client_instance_config_t client_cfg;
(void)tcp_server_init_all();
(void)tcp_client_init_all();
server_cfg.enabled = (cfg->links[CONFIG_LINK_S1].enabled != 0u);
server_cfg.port = cfg->links[CONFIG_LINK_S1].local_port;
(void)tcp_server_config(0u, &server_cfg);
server_cfg.enabled = (cfg->links[CONFIG_LINK_S2].enabled != 0u);
server_cfg.port = cfg->links[CONFIG_LINK_S2].local_port;
(void)tcp_server_config(1u, &server_cfg);
memcpy(client_cfg.remote_ip, cfg->links[CONFIG_LINK_C1].remote_ip, sizeof(client_cfg.remote_ip));
client_cfg.local_port = cfg->links[CONFIG_LINK_C1].local_port;
client_cfg.remote_port = cfg->links[CONFIG_LINK_C1].remote_port;
client_cfg.reconnect_interval_ms = TCP_CLIENT_RECONNECT_DELAY_MS;
client_cfg.enabled = (cfg->links[CONFIG_LINK_C1].enabled != 0u);
client_cfg.auto_reconnect = true;
(void)tcp_client_config(0u, &client_cfg);
memcpy(client_cfg.remote_ip, cfg->links[CONFIG_LINK_C2].remote_ip, sizeof(client_cfg.remote_ip));
client_cfg.local_port = cfg->links[CONFIG_LINK_C2].local_port;
client_cfg.remote_port = cfg->links[CONFIG_LINK_C2].remote_port;
client_cfg.enabled = (cfg->links[CONFIG_LINK_C2].enabled != 0u);
(void)tcp_client_config(1u, &client_cfg);
}
static void App_StartLinksIfNeeded(void)
{
if ((g_links_started != 0u) || !netif_is_link_up(&ch390_netif)) {
return;
}
for (uint8_t i = 0; i < TCP_SERVER_INSTANCE_COUNT; ++i) {
(void)tcp_server_start(i);
}
for (uint8_t i = 0; i < TCP_CLIENT_INSTANCE_COUNT; ++i) {
(void)tcp_client_connect(i);
}
g_links_started = 1u;
SEGGER_RTT_WriteString(0, "NET links started after link-up\r\n");
}
static void App_StopLinksIfNeeded(void)
{
if (netif_is_link_up(&ch390_netif)) {
return;
}
if (g_links_started != 0u) {
for (uint8_t i = 0; i < TCP_CLIENT_INSTANCE_COUNT; ++i) {
(void)tcp_client_disconnect(i);
}
for (uint8_t i = 0; i < TCP_SERVER_INSTANCE_COUNT; ++i) {
(void)tcp_server_stop(i);
}
SEGGER_RTT_WriteString(0, "NET links stopped after link-down\r\n");
}
g_links_started = 0u;
}
static void App_Init(void)
{
const device_config_t *cfg;
ip4_addr_t ipaddr;
ip4_addr_t netmask;
ip4_addr_t gateway;
uart_config_t uart_cfg;
(void)config_init();
cfg = config_get();
(void)uart_trans_init();
uart_cfg.baudrate = cfg->uart_baudrate[0];
(void)uart_trans_config(UART_CHANNEL_U0, &uart_cfg);
uart_cfg.baudrate = cfg->uart_baudrate[1];
(void)uart_trans_config(UART_CHANNEL_U1, &uart_cfg);
(void)uart_trans_start(UART_CHANNEL_U0);
(void)uart_trans_start(UART_CHANNEL_U1);
SEGGER_RTT_Init();
StackGuard_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->net.ip[0], cfg->net.ip[1], cfg->net.ip[2], cfg->net.ip[3]);
IP4_ADDR(&netmask, cfg->net.mask[0], cfg->net.mask[1], cfg->net.mask[2], cfg->net.mask[3]);
IP4_ADDR(&gateway, cfg->net.gw[0], cfg->net.gw[1], cfg->net.gw[2], cfg->net.gw[3]);
lwip_netif_init(&ipaddr, &netmask, &gateway);
App_ConfigureLinks(cfg);
BootDiag_ReportCh390();
if (HAL_UART_Receive_IT(&huart1, (uint8_t *)&g_uart1_rx_probe_byte, 1u) != HAL_OK) {
Error_Handler();
}
}
static void App_SendToUart(uint8_t uart_index, uint8_t src_id, uint8_t dst_mask, const uint8_t *data, uint16_t len)
{
const device_config_t *cfg = config_get();
uart_channel_t channel = (uart_index == LINK_UART_U1) ? UART_CHANNEL_U1 : UART_CHANNEL_U0;
if (cfg->mux_mode == MUX_MODE_FRAME) {
uint8_t frame[APP_ROUTE_BUFFER_SIZE + 6u];
uint16_t frame_len = 0u;
if (uart_mux_encode_frame(src_id, dst_mask, data, len, frame, &frame_len, sizeof(frame))) {
(void)uart_trans_write(channel, frame, frame_len);
}
} else {
(void)uart_trans_write(channel, data, len);
}
}
static void App_RouteTcpTraffic(void)
{
const device_config_t *cfg = config_get();
uint8_t buffer[APP_ROUTE_BUFFER_SIZE];
for (uint8_t i = 0; i < TCP_SERVER_INSTANCE_COUNT; ++i) {
int rc = tcp_server_recv(i, buffer, sizeof(buffer));
if (rc > 0) {
uint8_t link_index = (i == 0u) ? CONFIG_LINK_S1 : CONFIG_LINK_S2;
App_SendToUart(cfg->links[link_index].uart,
config_link_index_to_endpoint(link_index),
config_uart_index_to_endpoint(cfg->links[link_index].uart),
buffer,
(uint16_t)rc);
}
}
for (uint8_t i = 0; i < TCP_CLIENT_INSTANCE_COUNT; ++i) {
int rc = tcp_client_recv(i, buffer, sizeof(buffer));
if (rc > 0) {
uint8_t link_index = (i == 0u) ? CONFIG_LINK_C1 : CONFIG_LINK_C2;
App_SendToUart(cfg->links[link_index].uart,
config_link_index_to_endpoint(link_index),
config_uart_index_to_endpoint(cfg->links[link_index].uart),
buffer,
(uint16_t)rc);
}
}
}
static void App_RouteRawUartTraffic(void)
{
const device_config_t *cfg = config_get();
uint8_t buffer[APP_ROUTE_BUFFER_SIZE];
uint16_t len;
len = uart_trans_read(UART_CHANNEL_U0, buffer, sizeof(buffer));
if (len > 0u) {
for (uint8_t i = 0; i < CONFIG_LINK_COUNT; ++i) {
if (cfg->links[i].enabled == 0u || cfg->links[i].uart != LINK_UART_U0) {
continue;
}
if (i == CONFIG_LINK_S1) {
(void)tcp_server_send(0u, buffer, len);
} else if (i == CONFIG_LINK_S2) {
(void)tcp_server_send(1u, buffer, len);
} else if (i == CONFIG_LINK_C1) {
(void)tcp_client_send(0u, buffer, len);
} else if (i == CONFIG_LINK_C2) {
(void)tcp_client_send(1u, buffer, len);
}
}
}
len = uart_trans_read(UART_CHANNEL_U1, buffer, sizeof(buffer));
if (len > 0u) {
for (uint8_t i = 0; i < CONFIG_LINK_COUNT; ++i) {
if (cfg->links[i].enabled == 0u || cfg->links[i].uart != LINK_UART_U1) {
continue;
}
if (i == CONFIG_LINK_S1) {
(void)tcp_server_send(0u, buffer, len);
} else if (i == CONFIG_LINK_S2) {
(void)tcp_server_send(1u, buffer, len);
} else if (i == CONFIG_LINK_C1) {
(void)tcp_client_send(0u, buffer, len);
} else if (i == CONFIG_LINK_C2) {
(void)tcp_client_send(1u, buffer, len);
}
}
}
}
static void App_RouteMuxUartTraffic(void)
{
uart_mux_frame_t frame;
const device_config_t *cfg = config_get();
while (uart_mux_try_extract_frame(UART_CHANNEL_U0, &frame)) {
SEGGER_RTT_printf(0, "Mux frame from UART0: src_id=%u dst_mask=0x%02X len=%u\r\n", frame.src_id, frame.dst_mask, frame.payload_len);
if (frame.dst_mask == 0u) {
at_result_t result;
char *response_text = (char *)&g_mux_response_frame[5];
if (config_build_response_frame(frame.payload, frame.payload_len, response_text, (uint16_t)(sizeof(g_mux_response_frame) - 6u), &result)) {
uint16_t response_len = (uint16_t)strlen(response_text);
uint16_t frame_len = 0u;
if (uart_mux_encode_frame(config_uart_index_to_endpoint(LINK_UART_U0), 0u, (const uint8_t *)response_text, response_len, g_mux_response_frame, &frame_len, sizeof(g_mux_response_frame))) {
(void)uart_trans_write(UART_CHANNEL_U0, g_mux_response_frame, frame_len);
}
if (result == AT_NEED_REBOOT) {
static const char hint[] = "Note: Use AT+SAVE then AT+RESET to apply changes\r\n";
response_len = (uint16_t)strlen(hint);
if (uart_mux_encode_frame(config_uart_index_to_endpoint(LINK_UART_U0), 0u, (const uint8_t *)hint, response_len, g_mux_response_frame, &frame_len, sizeof(g_mux_response_frame))) {
(void)uart_trans_write(UART_CHANNEL_U0, g_mux_response_frame, frame_len);
}
}
}
continue;
}
if ((frame.dst_mask & ENDPOINT_S1) != 0u) {
(void)tcp_server_send(0u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_S2) != 0u) {
(void)tcp_server_send(1u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_C1) != 0u) {
(void)tcp_client_send(0u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_C2) != 0u) {
(void)tcp_client_send(1u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_UART3) != 0u && cfg->links[CONFIG_LINK_S2].uart == LINK_UART_U1) {
App_SendToUart(LINK_UART_U1, frame.src_id, ENDPOINT_UART3, frame.payload, frame.payload_len);
}
}
while (uart_mux_try_extract_frame(UART_CHANNEL_U1, &frame)) {
SEGGER_RTT_printf(0, "Mux frame from UART1: src_id=%u dst_mask=0x%02X len=%u\r\n", frame.src_id, frame.dst_mask, frame.payload_len);
if (frame.dst_mask == 0u) {
at_result_t result;
char *response_text = (char *)&g_mux_response_frame[5];
if (config_build_response_frame(frame.payload, frame.payload_len, response_text, (uint16_t)(sizeof(g_mux_response_frame) - 6u), &result)) {
uint16_t response_len = (uint16_t)strlen(response_text);
uint16_t frame_len = 0u;
if (uart_mux_encode_frame(config_uart_index_to_endpoint(LINK_UART_U1), 0u, (const uint8_t *)response_text, response_len, g_mux_response_frame, &frame_len, sizeof(g_mux_response_frame))) {
(void)uart_trans_write(UART_CHANNEL_U1, g_mux_response_frame, frame_len);
}
if (result == AT_NEED_REBOOT) {
static const char hint[] = "Note: Use AT+SAVE then AT+RESET to apply changes\r\n";
response_len = (uint16_t)strlen(hint);
if (uart_mux_encode_frame(config_uart_index_to_endpoint(LINK_UART_U1), 0u, (const uint8_t *)hint, response_len, g_mux_response_frame, &frame_len, sizeof(g_mux_response_frame))) {
(void)uart_trans_write(UART_CHANNEL_U1, g_mux_response_frame, frame_len);
}
}
}
continue;
}
if ((frame.dst_mask & ENDPOINT_S1) != 0u) {
(void)tcp_server_send(0u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_S2) != 0u) {
(void)tcp_server_send(1u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_C1) != 0u) {
(void)tcp_client_send(0u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_C2) != 0u) {
(void)tcp_client_send(1u, frame.payload, frame.payload_len);
}
if ((frame.dst_mask & ENDPOINT_UART2) != 0u) {
App_SendToUart(LINK_UART_U0, frame.src_id, ENDPOINT_UART2, frame.payload, frame.payload_len);
}
}
}
static void App_Poll(void)
{
ethernetif_poll();
ethernetif_check_link();
sys_check_timeouts();
App_StopLinksIfNeeded();
App_StartLinksIfNeeded();
tcp_client_poll();
uart_trans_poll();
StackGuard_Check();
config_poll();
App_RouteTcpTraffic();
if (config_get()->mux_mode == MUX_MODE_FRAME) {
App_RouteMuxUartTraffic();
} else {
App_RouteRawUartTraffic();
}
if (config_is_reset_requested()) {
config_clear_reset_requested();
NVIC_SystemReset();
}
if (hiwdg.Instance == IWDG) {
HAL_IWDG_Refresh(&hiwdg);
}
}
/* USER CODE END 0 */
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_DMA_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_USART3_UART_Init();
MX_SPI1_Init();
MX_TIM4_Init();
LED_Init();
LED_StartBlink();
App_Init();
while (1)
{
App_Poll();
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
g_clock_fallback_to_hsi = 0u;
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) {
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;
}
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();
}
}
#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)
{
}
}
void Error_Handler(void)
{
Debug_TrapWithRttHint("Error_Handler");
}
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{
(void)file;
(void)line;
Debug_TrapWithRttHint("assert_failed");
}
#endif
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