From 6c7b6c910be1dcdc0bb786e02be648b1a56faa5e Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Thu, 09 Oct 2025 00:50:02 +0800
Subject: [PATCH] 添加串口远程控制项目代码
---
Core/Src/main.c | 103 +++++++++++++++++++++++++++++++++++++++++++++------
1 files changed, 91 insertions(+), 12 deletions(-)
diff --git a/Core/Src/main.c b/Core/Src/main.c
index 3344439..91e9187 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -26,9 +26,11 @@
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
+#include <string.h>
#include "miscdev.h"
#include "sht20.h"
#include "w25q.h"
+#include "core_json.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
@@ -60,7 +62,68 @@
/* 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 */
/**
@@ -73,6 +136,7 @@
/* USER CODE BEGIN 1 */
int rv;
float temperature, humidity;
+ char pack_buf[128];
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
@@ -101,25 +165,40 @@
/* USER CODE BEGIN 2 */
beep_start(2, 300);
- spinor_test();
+ /* Must Enable UART3 receive interrupter here */
+ HAL_UART_Receive_IT(&huart1 , &g_rxch, 1);
- do {} while(1);
+ printf("Remote monitor and control program\r\n");
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
- rv = sht20_sample_TrH(&temperature, &humidity);
- if( rv )
- {
- printf("ERROR: SHT20 sample data failure, rv=%d\r\n", rv);
- }
- else
- {
- printf("SHT20 sample temperature: %.2f relative humidity: %.1f%%\r\n", temperature, humidity);
- }
- HAL_Delay(1000);
+ 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 */
--
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