将温度加入了心跳

lib/heat.h

+#ifndef __HEAT_H__
+#define __HEAT_H__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int heat_tem();//获取CPU温度
+extern char temperature[];//温度存储
+
+#endif
\ No newline at end of file

lib/main.h

@@ -18,7 +18,7 @@
 #include "opensh.h"
 #include "INA226.h"
 #include "pthrpoll.h"
-
+#include "heat.h"
 
 
 

lib/mqtt.h

@@ -17,6 +17,7 @@
 #include "INA226.h"
 #include "pthrpoll.h"
 #include "gpio_pwm_2.h"
+#include "heat.h"
 
 extern char* TOPIC ;//="app2dev/controlcar0004"
 extern char* TOPIC2 ;//="dev2app/controlcar0004"

src/heat.c

+#include "heat.h"
+
+#define MAX_LINE_LENGTH 20
+
+char temperature[20];
+float temp_str;
+int heat_tem() {
+    FILE *file;
+    char line[MAX_LINE_LENGTH];
+    file = fopen("/sys/class/thermal/thermal_zone0/temp", "r");
+    if (file == NULL) {
+        perror("无法打开温度文件");
+        return 1;
+    }
+
+    if (fgets(line, sizeof(line), file) != NULL) {
+        temp_str = (float)atof(line) / 1000.0;
+        sprintf(temperature, "%.2f°C", temp_str);
+        printf("CPU 温度: %.2f°C\n", temp_str);
+    }
+
+    fclose(file);
+    return 0;
+}    
\ No newline at end of file

src/mqtt.c

@@ -60,16 +60,18 @@ void mqtt_wirte(){//心跳格式
     sprintf(voltage_str, "%.2f", voltage); 
     char current_str[20];  // 足够存储转换后的字符串的缓冲区
     sprintf(current_str, "%.2f", current); 
+    heat_tem();//获取CPU温度
     message=1;
     cJSON *root = cJSON_CreateObject();
     cJSON *body = cJSON_CreateObject();
     cJSON *head = cJSON_CreateObject();
-    cJSON_AddStringToObject(body, "ip", ip_address);
-    cJSON_AddStringToObject(body, "ID", TOPIC);
-    cJSON_AddStringToObject(body, "V:", voltage_str);
-    cJSON_AddStringToObject(body, "I:", current_str);
-    cJSON_AddStringToObject(body, "N", glat);
-    cJSON_AddStringToObject(body, "E", glon);
+    cJSON_AddStringToObject(body, "ip", ip_address);//发送设备id
+    cJSON_AddStringToObject(body, "ID", TOPIC);//发送设备号
+    cJSON_AddStringToObject(body, "V:", voltage_str);//心跳发送电压
+    cJSON_AddStringToObject(body, "I:", current_str);//心跳发送电流
+    cJSON_AddStringToObject(body,"Tem:",temperature);//发送温度
+    cJSON_AddStringToObject(body, "N", glat);//gps
+    cJSON_AddStringToObject(body, "E", glon);//gps
     cJSON_AddNumberToObject(head, "message_type",message);
     cJSON_AddItemToObject(root, "body", body);
     cJSON_AddItemToObject(root, "head",head);

usr/main.c

@@ -9,6 +9,10 @@ int Device_File_Init() {
     sub_str[2]='\0';
     printf("开始初始化了");
 
+
+    
+
+
     if(strcmp(sub_str,"01")==0){//车的编码
         pwm_speed(); //pwm初始化，车为停止
         pin_init();