机智云开发板(stm32+esp8266)连接贝壳物联在线稳定性测试
一、设备功能机智云gokit开发板实时上传DHT11温湿度数据，接受控制并进行反馈，保持断线重连，可以通过开发板的usb口，用串口工具调试工具，直接控制esp8266。
二、硬件
gokit开发板2.0v，esp8266网络模块。
三、实现方法
1、gokit扩展板上的esp8266刷AT固件，参见：机智云Gokit2代功能板ESP-12F直接刷AT固件透传方法
2、下载基于ebox系统的stm32，工程文件，点击下载；
3、复制下方代码，粘贴替换下载工程文件中的mian.cpp文件内容；
4、修改文件中的DEVICEID、APIKEY、temp_input_id、hum_input_id，分别为设备id，设备密码，属于该设备下的温度接口和湿度接口id；
5、编译烧录；
6、进行透传设置，直接通过gokit的usb口，使用串口调试工具，向esp8266发送命令进行透传设置，可参见：ESP8266透传设置脚本，设置成功后自动连接贝壳物联平台
四、代码
//STM32 RUN IN eBox
#include "ebox.h"
#include "cJSON.h"
#include "Dht11.h"
//================================
String DEVICEID = "xxx";
String APIKEY = "xxxxxxxxx";
String temp_input_id="xxxx";
String hum_input_id="xxxx";
//====================================
Dht11 sensor(&PB3);
char uart1_rx_str;
int i=0;
char uart2_rx_str;
int j=0;
uint32_t last_beat_time = 0;
bool checkinok = false;
String checkin="{\"M\":\"checkin\",\"ID\":\""+DEVICEID+"\",\"K\":\""+APIKEY+"\"}\n";
void say(char *toID, char *content)
{
uart2.printf("{\"M\":\"say\",\"ID\":\"%s\",\"C\":\"%s\"}\n",toID,content);
}
int processMessage(char *msg){
cJSON *jsonObj = cJSON_Parse(msg);
if(!jsonObj)
{
uart1.printf("json string wrong!");
return 0;
}
cJSON *method = cJSON_GetObjectItem(jsonObj, "M");
char *m = method->valuestring;
if(strncmp(m,"b",1) == 0 || strncmp(m,"WELCOME",7) == 0)
{
uart1.printf("sending checkin...\r\n");
uart2.print(checkin);
}
if(strncmp(m,"checkinok",9) == 0)
{
checkinok=true;
}
if(strncmp(m,"connected",9) == 0)
{
checkinok=false;
uart1.printf("sending checkin...\r\n");
uart2.print(checkin);
}
if(strncmp(m,"checked",7) == 0)
{
checkinok=true;
}
if(strncmp(m,"login",5) == 0)
{
char *from_id = cJSON_GetObjectItem(jsonObj, "ID")->valuestring;
uart1.printf("saying...");
char new_content[] = "Dear friend, welcome to BIGIOT !";
say(from_id,new_content);
}
if(strncmp(m,"say",3) == 0)
{
char *content = cJSON_GetObjectItem(jsonObj, "C")->valuestring;
char *from_id = cJSON_GetObjectItem(jsonObj, "ID")->valuestring;
if(strncmp(content,"play",4) == 0)
{
//do something here....
uart1.printf("saying...");
char new_content[] = "played";
say(from_id,new_content);
}
else if(strncmp(content,"stop",4) == 0)
{
//do something here....
uart1.printf("saying...");
char new_content[] = "stoped";
say(from_id,new_content);
}
else{
//do something here....
uart1.printf("saying...");
char new_content[] = "I don't know what you have said...";
say(from_id,new_content);
}
}
if(jsonObj)cJSON_Delete(jsonObj);
return 1;
}
void uart2_rx_event()
{
uint16_t c;
c = uart2.read();
uart1.write(c);
uart2_rx_str=c;
uart2_rx_str = '\0';
if (c == '\n')
{
if(uart2_rx_str == '}')
{
processMessage(uart2_rx_str);
}
if(strncmp(uart2_rx_str,"ERROR",5) == 0)
{
checkinok = false;
}
j=0;
}else{
j++;
}
}
void update_dht11()
{
int temp,hum;
switch (sensor.read())
{
case Dht11::OK:
temp=sensor.getTemperature();
hum=sensor.getHumidity();
uart1.printf("{\"M\":\"update\",\"ID\":\"%s\",\"V\":{\"%s\":\"%d\",\"%s\":\"%d\"}}\n",DEVICEID.c_str(),temp_input_id.c_str(),temp,hum_input_id.c_str(),hum);
uart2.printf("{\"M\":\"update\",\"ID\":\"%s\",\"V\":{\"%s\":\"%d\",\"%s\":\"%d\"}}\n",DEVICEID.c_str(),temp_input_id.c_str(),temp,hum_input_id.c_str(),hum);
break;
case Dht11::ERROR_CHECKSUM:
uart1.printf("Checksum error\r\n");
break;
case Dht11::ERROR_TIMEOUT:
uart1.printf("Timeout error\r\n");
break;
default:
uart1.printf("Unknown error\r\n");
break;
}
}
void uart1_rx_event()
{
uint16_t c;
c = uart1.read();
uart1_rx_str=c;
uart1_rx_str = '\0';
if (c == '\n')
{
uart2.printf(uart1_rx_str);
i=0;
}else if(strncmp(uart1_rx_str,"+++",3) == 0)
{
uart2.printf(uart1_rx_str);
i=0;
}else
{
i++;
}
}
void setup()
{
ebox_init();
uart1.begin(115200);
uart2.begin(115200);
uart1.printf("Working start!\r\n");
uart1.attach(uart1_rx_event,RxIrq);
uart2.attach(uart2_rx_event,RxIrq);
}
int main(void)
{
uint32_t last_update_time = 0;
uint32_t last_status_time = 0;
setup();
while(1)
{
if(millis() - last_update_time > 6310 && checkinok)
{
update_dht11();
last_update_time = millis();
}
if(millis() - last_status_time > 120000 || last_status_time == 0)
{
uart2.printf("{\"M\":\"status\"}\n");
last_status_time = millis();
}
}
}
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