嵌入式软件设计第11次实验报告

学号：140201206                姓名：刘宇新

组别：第7组                        实验地点：D19

一、实验目的：

1、了解短信AT指令的使用方法。

2、掌握使用短信AT指令驱动SIM900A发送和接收短信的方法。

二、实验内容：

1.使用AT命令进行模块测试，发送和接收短信。

2.编写程序利用触摸屏完成固定号码短信的发送和接收。（需要加上AT测试命令模块、手机SIM卡检测模块、手机信号质量检测模块等等。）

三、实验过程描述及结果展示：

短信常用AT指令1

短信常用AT指令2

GSM短信发送菜单示例

实现代码：

#include "sys.h"
#include "delay.h" 
#include "usart.h" 
#include "led.h"
#include "lcd.h"
#include "key.h" 
#include "touch.h" 
#include "text.h"
#include "w25qxx.h" 
#include "malloc.h" 
#include "ff.h" 
#include "exfuns.h" 
#include <string.h>

const u16 POINT_COLOR_TBL[OTT_MAX_TOUCH]={RED,GREEN,BLUE,BROWN,GRED}; 
extern u16 USART3_RX_STA; 
extern u8 USART3_RX_BUF[400];

unsigned char cnt = 0;
unsigned char *SMS = 0;
u8 SMS_string[10]={"AT+CMGR="};
void LCD_Draw_Circle(u16 x0,u16 y0,u8 r);

//串口3发送数据示例代码
// USART_SendData(USART3,send_string[i]);
// while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);//等待发送结束

//串口3接收数据示例代码
// while(USART_GetFlagStatus(USART3, USART_FLAG_RXNE) == RESET);
// receive_string[i] = (USART_ReceiveData(USART3));

int main(void)
{

// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置系统中断优先级分组2
delay_init(168); //初始化延时函数
uart_init(115200); //初始化串口波特率为115200
uart3_init(115200);

LED_Init(); //初始化LED 
LCD_Init(); //LCD初始化 
tp_dev.init(); //触摸屏初始化

LCD_Clear(BLACK);
POINT_COLOR=YELLOW;//设置字体为黄色
BACK_COLOR = BLACK;

//初始化SIM900A
//发AT测试命令
//设置短信的新消息提示AT+CNMI=2,1;
{
unsigned char temp;
unsigned char send_string0[] = {"AT+CNMI=2,1x0dx0a"};
unsigned char send_string1[] = {"AT+CMGF=1 "};
unsigned char send_string2[] = {"AT+CSCS="GSM" "};

for(temp=0;temp<2;temp++)
{
USART_SendData(USART3,'A');
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);
USART_SendData(USART3,'T');
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);
USART_SendData(USART3,'0x0d');
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);
USART_SendData(USART3,'0x0a');
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);
}
delay_ms(100);

for(temp=0;temp<13;temp++)//发送AT+CNMI=2,1x0dx0a
{
USART_SendData(USART3,send_string0[temp]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);
}
delay_ms(100);

for(temp=0;temp<11;temp++)//发送AT+CMGP=1
{
USART_SendData(USART3,send_string1[temp]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);
}
delay_ms(100);

for(temp=0;temp<15;temp++)//发送AT+CSCS="GSM"
{
USART_SendData(USART3,send_string2[temp]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET);
}
delay_ms(100);
}
USART3_RX_STA = 0;

//以下代码构建短信发送菜单
{
Show_Str(30,30,200,24,"命令按钮区",24,1);
Show_Str(248,30,200,24,"文本区",24,1);

LCD_DrawRectangle(30,70,174,118);//AT测试按钮方程
Show_Str(42,82,200,24,"AT测试按钮",24,1);
LCD_DrawRectangle(248,70,452,118);//AT测试按钮的显示文字框

LCD_DrawRectangle(30,142,222,190);//SIM卡测试按钮方程
Show_Str(42,154,204,24,"卡状态测试按钮",24,1);
LCD_DrawRectangle(248,142,452,190);//

LCD_DrawRectangle(30,214,198,262);
Show_Str(42,226,204,24,"信号测试按钮",24,1);
LCD_DrawRectangle(248,214,452,262);

LCD_DrawLine(0,282,479,282);

Show_Str(42,338,204,24,"发送按钮",24,1);
LCD_DrawRectangle(30,326,162,374);

Show_Str(168,310,204,16,"发送号码",16,1);
LCD_ShowString(256,310,88,16,16,"17801017974");
LCD_DrawRectangle(248,302,452,334);

Show_Str(168,358,204,16,"发送内容",16,1);
LCD_ShowString(256,358,150,16,16,"this is test text");
LCD_DrawRectangle(248,350,452,382);

LCD_DrawLine(0,402,479,402);//画分割线

Show_Str(42,458,204,24,"接收按钮：",24,1);
LCD_DrawRectangle(30,446,162,494);

Show_Str(168,430,204,16,"来信号码：",24,1);
LCD_DrawRectangle(248,422,452,454);

Show_Str(168,478,204,16,"提示灯",16,1);

Show_Str(42,510,204,16,"短信内容：",24,1);
LCD_DrawRectangle(30,526,452,766);

//画个圆框用来做短信提示
{
int i;
POINT_COLOR=YELLOW;//设置字体为黄色
for(i=20;i<22;i++)
{
LCD_Draw_Circle(272,486,i);
}
}
}

//以下代码扫描触摸屏检测按键
while(1)
{
tp_dev.scan(0);
if(tp_dev.x[0]>30 && tp_dev.x[0]<174 && tp_dev.y[0]>70 &&tp_dev.y[0]<118)//AT测试按钮的按键区域
{
u8 i;
u8 send_string[] = {"AT "};
u8 receive_string[20] = {0};
char *p_display;
receive_string[19] = '';

while(tp_dev.sta & 0x80)//等待触摸屏按键松开
tp_dev.scan(0);
USART_ClearFlag(USART3,USART_FLAG_TC);//加上此句，串口发送的第一个字节就不会丢失
for(i=0;i<4;i++)
{
USART_SendData(USART3,send_string[i]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!= SET);//等待发送结束
}

//清除触摸值
tp_dev.x[0]=0xFFFF;
tp_dev.y[0]=0xFFFF;
}

if(tp_dev.x[0]>30 && tp_dev.x[0]<222 && tp_dev.y[0]>142 &&tp_dev.y[0]<190)//SIM卡状态测试按钮
{
u8 i;
u8 send_string[] = {"AT+CPIN? "};
u8 receive_string[32] = {0};
char *p_display;
receive_string[31] = '';

while(tp_dev.sta & 0x80)//等待触摸屏按键松开
tp_dev.scan(0);
USART_ClearFlag(USART3,USART_FLAG_TC);//加上此句，串口发送的第一个字节就不会丢失
for(i=0;i<10;i++)
{
USART_SendData(USART3,send_string[i]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!= SET);//等待发送结束
}

//清除触摸值
tp_dev.x[0]=0xFFFF;
tp_dev.y[0]=0xFFFF;
}

if(tp_dev.x[0]>30 && tp_dev.x[0]<198 && tp_dev.y[0]>214 &&tp_dev.y[0]<262)//信号状态测试按钮
{
u8 i;
u8 send_string[] = {"AT+CSQ "};
u8 receive_string[32] = {0};
char *p_display;
receive_string[31] = '';

while(tp_dev.sta & 0x80)//等待触摸屏按键松开
tp_dev.scan(0);
USART_ClearFlag(USART3,USART_FLAG_TC);//加上此句，串口发送的第一个字节就不会丢失
for(i=0;i<8;i++)
{
USART_SendData(USART3,send_string[i]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!= SET);//等待发送结束
}

//清除触摸值
tp_dev.x[0]=0xFFFF;
tp_dev.y[0]=0xFFFF;
}

if(tp_dev.x[0]>30 && tp_dev.x[0]<162 && tp_dev.y[0]>326 &&tp_dev.y[0]<374)//发送固定短信测试按钮
{
u8 i;
u8 send_string1[] = {"AT+CMGS="13021257803" "};
u8 send_string2[] = {"This is test text!x1A"};

while(tp_dev.sta & 0x80)//等待触摸屏按键松开
tp_dev.scan(0);
USART_ClearFlag(USART3,USART_FLAG_TC);//加上此句，串口发送的第一个字节就不会丢失
for(i=0;i<23;i++)
{
USART_SendData(USART3,send_string1[i]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!= SET);//等待发送结束
}

delay_ms(100);

for(i=0;i<19;i++)
{
USART_SendData(USART3,send_string2[i]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!= SET);//等待发送结束
}

//清除触摸值
tp_dev.x[0]=0xFFFF;
tp_dev.y[0]=0xFFFF;
}
if(tp_dev.x[0]>30 && tp_dev.x[0]<162 && tp_dev.y[0]>446 &&tp_dev.y[0]<494)//有短信提示后，短信接受按钮
{
u8 i;
u8 send_string[100] = {"AT+CMGR= "};
u8 data_r_n[] = {" "};
char *p_display;

while(tp_dev.sta & 0x80)//等待触摸屏按键松开
tp_dev.scan(0);
USART_ClearFlag(USART3,USART_FLAG_TC);//加上此句，串口发送的第一个字节就不会丢失

strcat(send_string,SMS);
strcat(send_string,data_r_n);

for(i=0;i<12;i++)
{
USART_SendData(USART3,send_string[i]);
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!= SET);//等待发送结束
}

//清除同心圆，表示短信已阅读
{
int i;
POINT_COLOR = BLACK;
for(i=1;i<20;i++)
{
LCD_Draw_Circle(272,486,i);
}
POINT_COLOR = YELLOW;
}

//清除触摸值
tp_dev.x[0]=0xFFFF;
tp_dev.y[0]=0xFFFF;
}
//以下代码根据串口3收到的信息作出相应的动作
if(USART3_RX_STA & 0x8000)//接收到一次数据
{
char *p_display;
USART3_RX_BUF[USART3_RX_STA & 0x7FFF] = 0;//添加结束符号

if(p_display = strstr((const char*)USART3_RX_BUF,(const char*)"AT "))//当收到AT的反馈时
{
p_display = p_display+6;
LCD_ShowString(260,82,240,24,24,(u8 *)p_display);
}

if(p_display = strstr((const char*)USART3_RX_BUF,(const char*)"AT+CPIN?"))//当收到SIM卡状态查询命令的反馈时
{
p_display = p_display+19;
LCD_ShowString(260,154,240,24,24,(u8 *)p_display);
}

if(p_display = strstr((const char*)USART3_RX_BUF,(const char*)"AT+CSQ"))//当收到信号强度测试命令的反馈时
{
p_display = p_display+10;
LCD_ShowString(260,226,240,24,24,(u8 *)p_display);
}

if(p_display = strstr((const char*)USART3_RX_BUF,(const char*)"+CMTI:"))//当收到新消息提示符
{
p_display = p_display+12;
SMS = p_display;
//画同心圆表示来短信了
{
int i;
POINT_COLOR = RED;
for(i=1;i<20;i++)
{
LCD_Draw_Circle(272,486,i);
}
POINT_COLOR = YELLOW;
}
}

if(p_display = strstr((const char*)USART3_RX_BUF,(const char*)"+32"))//当收到消息正文后
{
p_display = p_display+6;
LCD_ShowString(38,534,320,16,16," ");
LCD_ShowString(38,534,320,16,16,p_display);

//给出短信号码
{
p_display = strstr((const char*)USART3_RX_BUF,(const char*)"+86");
p_display = p_display+3;
LCD_ShowString(256,430,88,16,16," ");
LCD_ShowString(256,430,88,16,16,p_display);
}
}
USART_RX_STA=0;
}
}

}

 四、总结及实验心得：

了解Ｌ短信AT指令的使用方法，掌握了使用短信AT指令驱动SIM900A发送和接收短信的方法。