【开源获奖案例】基于T5L的smtp邮件发送器

——来自迪文开发者论坛

本期为您推送一个非常实用的迪文开发者论坛获奖开源案例——基于T5L的smtp邮件发送器。工程师采用T5L智能屏，通过WiFi模块访问smtp服务器，实现了发送邮件给管理员的功能，操作时在屏幕上输入收件人邮箱、邮件标题、邮件内容等信息即可。值得注意的是，邮件内容还支持纯文本、组态控件、设置文本颜色等编辑方式。
 

   方案简介  

方案架构

T5L智能屏通过串口5控制WiFi模块与smtp服务器交互，实现邮件发送功能。

界面开发

DGUS软件通过图层叠加来完成显示和触控功能开发，用户只需要把准备好的图片素材加载到DGUS软件，设置好显示和触控功能即可。

 

C51软件设计

T5L智能屏串口5与WiFi模块通讯，完成与smtp服务器交互。完整代码请参考源码工程，部分主要代码如下：

void uart5_init(u32 baud)

 

 

{

 

 

    SCON3T = 0x80;

 

 

    SCON3R = 0x80;

 

 

    baud = (u32)((double)(FOSC/8.0)/baud);

 

 

    BODE3_DIV_H = (baud>>8)&0xff;

 

 

    BODE3_DIV_L = baud&0xff;

 

 

    ES3R = 0;

 

 

    ES3T = 0;

 

 

}

 

 

 void u5_send_byte(u8 byte)

 

{

 

    SBUF3_TX = byte;

 

    while(!(SCON3T&0x01));

 

    SCON3T &= 0xfe;

 

}

 

 void u5_send_bytes(u8 *bytes,u16 len)

 

{

 

    u16 i;    for(i=0;i

 

    {

 

        SBUF3_TX = bytes;

 

        while(!(SCON3T&0x01));

 

        SCON3T &= 0xfe;

 

    }

 

}

 

 void get_input(u8 * val,u8 len)

 

{

 

    u8 i;

 

 

    for(i=0;i

 

    {

 

        if(val==0xff)

 

        {

 

            val = 0x00;

 

            val[i+1] = 0x00;

 

            return;

 

        }

 

    }

 

}

 

 u8 esp8266_send_cmd(u8 *cmd,u8 *ack,u16 waittime,u8 clearBuffer)

 

{

 

    u8 res=0;

 

    rx_sta=0;

 

 

    if(ack&&waittime&&cmd)       

 

    {

 

        while(--waittime)       

 

        {

 

            sys_delay_ms(10);

 

            if(rx_sta&0X8000)

 

            {

 

                if(esp8266_check_respond(ack))

 

                break;

 

            }

 

        }

 

        if(waittime==0)res=1;

 

        if(clearBuffer==1)rx_sta=0;

 

    }

 

    return res;

 

}

 

 typedef struct{

 

    u8 cmd;

 

    u8 email[20];

 

    u8 name[20];

 

    u8 title[20];

 

    u8 msg[60];

 

}EMAIL_INFO;

 

 EMAIL_INFO email_info;

 

 u8 respond[80];

 

u8 wifi_name[30];

 

u8 wifi_passwd[30];

 

u8 server[30];

 

u8 port[30];

 

u8 username[30];

 

u8 auth_code[30];

 

u8 rx_sta;

 

 sys_read_vp(0x1000,(u8*)&btn_val,1);

 

if(btn_val)

 

{

 

    if(btn_val==1)

 

    {

 

        sys_read_vp(0x3000,email_info.name,10);

 

        sys_read_vp(0x3020,email_info.email,10);

 

        sys_read_vp(0x3040,email_info.title,10);

 

        sys_read_vp(0x3060,email_info.msg,30);

 

        get_input(email_info.name,20);

 

        get_input(email_info.email,20);

 

        get_input(email_info.title,20);

 

        get_input(email_info.msg,60);

 

        send_packet((u8*)&email_info,sizeof(EMAIL_INFO));

 

        if(rx_sta)

 

            send_mail(email_info.email,email_info.title,email_info.msg);

 

    }else if(btn_val==2)

 

    {

 

        sys_read_vp(0x3100,wifi_name,15);

 

        sys_read_vp(0x3120,wifi_passwd,15);

 

        get_input(wifi_name,30);

 

        get_input(wifi_passwd,30);

 

    }else if(btn_val==3)

 

    {

 

        sys_read_vp(0x3200,server,15);

 

        sys_read_vp(0x3220,port,15);

 

        sys_read_vp(0x3240,username,15);

 

        sys_read_vp(0x3260,auth_code,15);       

 

        get_input(server,30);

 

        get_input(port,30);

 

        get_input(username,30);

 

        get_input(auth_code,30);                               

 

    }

 

 

    btn_val = 0;

 

    sys_write_vp(0x1000,(u8*)&btn_val,1);

 

}

 

sys_read_vp(0x2050,(u8*)&btn_val2,1);

 

if(btn_val2!=old_val)

 

{

 

    if(btn_val2==1)

 

        sys_write_vp(0x3060,"This is a email from T5L!\0\0",30);

 

    else if(btn_val2==2)

 

        sys_write_vp(0x3060,"Click

value='good'>\0\0",30);

 

    else if(btn_val2==3)

 

        sys_write_vp(0x3060,"

Bold

Red

\0\0",30);

 

 

    old_val = btn_val2;}