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嵌入式软件设计第11次实验报告

学号:140201211            姓名:张润泽

组别:第3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

技术分享

GSM短信发送菜单示例

技术分享

 

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=2,1\x0d\x0a"};
unsigned char send_string1[] = {"AT+CMGF=1\r\n"};
unsigned char send_string2[] = {"AT+CSCS=\"GSM\"\r\n"};

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=2,1\x0d\x0a
{
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\r\n
{
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\"\r\n
{
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\r\n"};
u8 receive_string[20] = {0};
char *p_display;
receive_string[19] = ‘\0‘;

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?\r\n"};
u8 receive_string[32] = {0};
char *p_display;
receive_string[31] = ‘\0‘;

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\r\n"};
u8 receive_string[32] = {0};
char *p_display;
receive_string[31] = ‘\0‘;

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\"\r\n"};
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=\r\n"};
u8 data_r_n[] = {"\r\n\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\r\n"))//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;
}
}

}

技术分享

四、总结及实验心得:

  这节课掌握了短信AT指令驱动SIM900A发送和接收短信的方法,用AT命令进行模块测试并发送和接收短信以及编写程序利用触摸屏完成固定号码短信的发送和接收。

 

嵌入式软件设计第11次实验报告