学号:140201218 姓名:杨昌航
组别:第7组 实验地点:D19
一、实验目的:
1.掌握通过GSM短信远程与嵌入式设备进行交互的方法。
二、实验内容:
1.编写程序把嵌入式开发板采集到的温度信息通过GSM短信传送给指定号码。(每10秒发送1次)
2.编写程序,使手机可以通过短信指令的方式控制嵌入式开发板的蜂鸣器和LED灯。(比如手机编辑“BEEP_ON”和“BEEP_OFF”控制嵌入式开发板的蜂鸣器)
三、实验过程描述及结果展示:
#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>
#include "dht11.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];
void LCD_Draw_Circle(u16 x0,u16 y0,u8 r); unsigned char cnt =0; u8 TimeCnt =0;
unsigned char *SMS = 0; u8 SMS_string[10]={"AT+CMGR="};
//定时器6中断服务器程序
void TIM6_DAC_IRQHandler(void)
{
if(TIM_GetITStatus(TIM6,TIM_IT_Update)!=RESET)//判断是否是更新中
{
TIM_ClearITPendingBit(TIM6,TIM_IT_Update);//清除TIM6更新中断标志 TimeCnt++;
}
} 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 KEY_Init(); 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;
//以下代码初始化定时器 { NVIC_InitTypeDef NVIC_InitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6,ENABLE); //定时器初始化 TIM_TimeBaseStructure.TIM_Period = 1000-1; TIM_TimeBaseStructure.TIM_Prescaler = 8400-1; TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM6,&TIM_TimeBaseStructure); TIM_ITConfig(TIM6,TIM_IT_Update,ENABLE);//使能指定的TIM6中断,允许更新中断 NVIC_InitStructure.NVIC_IRQChannel = TIM6_DAC_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//IRQ通道使能 NVIC_Init(&NVIC_InitStructure);//根据指定的参数初始化NVIC寄存器 } TIM_Cmd(TIM6,ENABLE);//启动定时器6 //以下代码初始化温湿度传感器 { GPIO_InitTypeDef GPIO_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG,ENABLE); GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType=GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_UP; GPIO_Init(GPIOG,&GPIO_InitStructure); DHT11_Rst(); while(DHT11_Check()); } //以下代码配置蜂鸣器 { GPIO_InitTypeDef GPIO_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOF,ENABLE); GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType=GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_100MHz; GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_DOWN; GPIO_Init(GPIOF,&GPIO_InitStructure); } //初始化SIM900A { unsigned char temp; unsigned char send_string0[] = {"AT+CNMI=2,1\x0d\x0a"}; u8 send_string1[] = {"AT+CMGF=1\r\n"}; u8 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+CMGF=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; while(1) { if(TimeCnt>=100) { TimeCnt=0; printf("Time is out!\r\n"); //以下代码把DHT11采集到的当前温度用短信的形式发送到固定号码 { u8 i; u8 send_string1[] = {"AT+CMGS=\"13021257803\"\r\n"}; u8 add_ascii[]={"\x1A"}; u8 sms_temperature[]={"current temperature:"}; u8 temper[2]; u8 temperature,humidity; DHT11_Read_Data(&temperature,&humidity);
temper[0]=(temperature/10)+0x30; temper[1]=(temperature%10)+0x30; strcat(sms_temperature,temper); strcat(sms_temperature,add_ascii); USART_ClearFlag(USART3,USART_FLAG_TC); printf("send_string1=%s\r\n",send_string1); for(i=0;i<23;i++) { USART_SendData(USART3,send_string1[i]); while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET); } delay_ms(100);
printf("sms_temperature=%s\r\n",sms_temperature); for(i=0;i<23;i++) { USART_SendData(USART3,sms_temperature[i]); while(USART_GetFlagStatus(USART3,USART_FLAG_TC)!=SET); } delay_ms(100); } } //以下代码监控是否有驱动BEEP的短信指令 if(USART3_RX_STA & 0x8000) { char* p_display; USART3_RX_BUF[USART3_RX_STA & 0x7FFF]=0; if(p_display=strstr((const char*)USART3_RX_BUF,(const char*)"+CMTI:")) { p_display=p_display+12; SMS=p_display; { u8 i; u8 send_string[100] = {"AT+CMGR="}; u8 data_r_n[] = {"\r\n\n"}; char *p_display; USART_ClearFlag(USART3,USART_FLAG_TC); 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); } } } if(p_display=strstr((const char*)USART3_RX_BUF,(const char*)"+32")) { if(strstr((const char*)USART3_RX_BUF,(const char*)"BEEP_ON")) { GPIO_SetBits(GPIOF,GPIO_Pin_8); } if(strstr((const char*)USART3_RX_BUF,(const char*)"BEEP_OFF")) { GPIO_ResetBits(GPIOF,GPIO_Pin_8); } } USART3_RX_STA=0; } } }
总结:
本次实验是嵌入式开发课程最后一次实验,本次实验,需要我们综合运用之前学过的知识,编写程序把嵌入式开发板采集到的温度信息通过GSM短信传送给指定号码,并完成使手机可以通过短信指令的方式控制嵌入式开发板的蜂鸣器和LED灯。由于这次试验难度比较大,所以老师给我们作了详细的讲解。