ARM®mbed OS入门开发 设置并测试ESP8266

anywill

【STM32 Mbed帖子大集合】

设置并测试ESP8266 Wi Fi SOC. 设置SSID 及 PASSWORD串口打印状态信息

ESP8266	mbed LPC1768	330uf cap
Vcc	Vout-3.3V	+
Gnd	Gnd	-
Reset	p26
RX	p28-TX
TX	p27-RX
CH_PD	Vout

须注意 本模块采用3.3v供电
#include "mbed.h"
Serial pc(USBTX, USBRX);
Serial esp(D10, D2); // tx D10, rx D2
DigitalOut reset(D1);
Timer t;
int  count,ended,timeout;
char buf[1024];
char snd[255];
char ssid[32] = "mySSID";     // enter WiFi router ssid inside the quotes
char pwd [32] = "myPASSWORD"; // enter WiFi router password inside the quotes
void SendCMD(),getreply(),ESPconfig(),ESPsetbaudrate();


int main()
{
    reset=0; //hardware reset for 8266
    pc.baud(115200);  // set what you want here depending on your terminal program speed
    pc.printf("\f\n\r-------------ESP8266 Hardware Reset-------------\n\r");
    wait(0.5);
    reset=1;
    timeout=2;
    getreply();
    esp.baud(115200);   // change this to the new ESP8266 baudrate if it is changed at any time.
    //ESPsetbaudrate();   //******************  include this routine to set a different ESP8266 baudrate  ******************
    ESPconfig();        //******************  include Config to set the ESP8266 configuration  ***********************
    // continuosly get AP list and IP
    while(1)
     {
        pc.printf("\n---------- Listing Acces Points ----------\r\n");
        strcpy(snd, "AT+CWLAP\r\n");
        SendCMD();
        timeout=15;
        getreply();
        pc.printf(buf);
        wait(2);
        pc.printf("\n---------- Get IP and MAC ----------\r\n");
        strcpy(snd, "AT+CIFSR\r\n");
        SendCMD();
        timeout=10;
        getreply();
        pc.printf(buf);
        wait(2);
    }
}
// Sets new ESP8266 baurate, change the esp.baud(xxxxx) to match your new setting once this has been executed
void ESPsetbaudrate()
{
    strcpy(snd, "AT+CIOBAUD=115200\r\n");   // change the numeric value to the required baudrate
    SendCMD();
}
//  +++++++++++++++++++++++++++++++++ This is for ESP8266 config only, run this once to set up the ESP8266 +++++++++++++++
void ESPconfig()
{
    wait(5);
    strcpy(snd,"AT\r\n");
    SendCMD();
    wait(1);
    strcpy(snd,"AT\r\n");
    SendCMD();
    wait(1);
    strcpy(snd,"AT\r\n");
    SendCMD();
    timeout=1;
    getreply();
    wait(1);
    pc.printf("\f---------- Starting ESP Config ----------\r\n\n");
    pc.printf("---------- Reset & get Firmware ----------\r\n");
    strcpy(snd,"AT+RST\r\n");
    SendCMD();
    timeout=5;
    getreply();
    pc.printf(buf);
    wait(2);
    pc.printf("\n---------- Get Version ----------\r\n");
    strcpy(snd,"AT+GMR\r\n");
    SendCMD();
    timeout=4;
    getreply();
    pc.printf(buf);
    wait(3);
    // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
    pc.printf("\n---------- Setting Mode ----------\r\n");
    strcpy(snd, "AT+CWMODE=1\r\n");
    SendCMD();
    timeout=4;
    getreply();
    pc.printf(buf);
    wait(2);
    // set CIPMUX to 0=Single,1=Multi
    pc.printf("\n---------- Setting Connection Mode ----------\r\n");
    strcpy(snd, "AT+CIPMUX=1\r\n");
    SendCMD();
    timeout=4;
    getreply();
    pc.printf(buf);
    wait(2);
    pc.printf("\n---------- Listing Access Points ----------\r\n");
    strcpy(snd, "AT+CWLAP\r\n");
    SendCMD();
    timeout=15;
    getreply();
    pc.printf(buf);
    wait(2);
    pc.printf("\n---------- Connecting to AP ----------\r\n");
    pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
    strcpy(snd, "AT+CWJAP=\"");
    strcat(snd, ssid);
    strcat(snd, "\",\"");
    strcat(snd, pwd);
    strcat(snd, "\"\r\n");
    SendCMD();
    timeout=10;
    getreply();
    pc.printf(buf);
    wait(5);


    pc.printf("\n---------- Get IP's ----------\r\n");
    strcpy(snd, "AT+CIFSR\r\n");
    SendCMD();
    timeout=3;
    getreply();
    pc.printf(buf);
    wait(1);
    pc.printf("\n---------- Get Connection Status ----------\r\n");
    strcpy(snd, "AT+CIPSTATUS\r\n");
    SendCMD();
    timeout=5;
    getreply();
    pc.printf(buf);
    pc.printf("\n\n\n  If you get a valid (non zero) IP, ESP8266 has been set up.\r\n");
    pc.printf("  Run this if you want to reconfig the ESP8266 at any time.\r\n");
    pc.printf("  It saves the SSID and password settings internally\r\n");
    wait(10);
}
void SendCMD()
{
    esp.printf("%s", snd);
}
void getreply()
{
    memset(buf, '\0', sizeof(buf));
    t.start();
    ended=0;
    count=0;
    while(!ended) {
        if(esp.readable()) {
            buf[count] = esp.getc();
            count++;
        }
        if(t.read() > timeout) {
            ended = 1;
            t.stop();
            t.reset();
        }
    }
}

anywill

虚拟串口运行在115200波特率,到mbed的USB com端口（mbed com数字不同）。它将显示通过示例程序的USB虚拟串口发送 WiFi命令和状态消息
本程序将允许你检查设置是否正常，并且从WiFi路由器获取有效的IP地址。
在将代码下载到编译器窗口后，将需要查找和更改单独的WiFi设置的“SSID”和“密码”字段，然后重新编译和下载。
更改后才能连接到你的WiFi上并获取IP地址。在此代码中，SSID和密码数据在“main.cpp”中找到。
一旦你设置它，芯片会保存。某些WiFi安全设置可能需要设备的MAC地址，并且还输出此信息。
因此，要先运行此程序，并让它使用一个有效的IP地址。
如果你的初始Wi Fi设置有问题，它将显示帮助的状态消息。
转自:http://developer.mbed.org/users/ ... h-the-mbed-lpc1768/

wangmmm

程序太长了，还没看懂

suoma

谢谢分享学习一下

zengyi703-16313

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高二毛

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哈佛祖安智

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anobodykey

xyx365

谢谢分享学习一下

mark0668

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