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  • 嵌入式软件设计第12次实验报告

    嵌入式软件设计第12次实验报告

     

    学号:140201135                  姓名:沈锦鑫

     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=2,1x0dx0a"};
    u8 send_string1[] = {"AT+CMGF=1 "};
    u8 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+CMGF=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;
    while(1)
    {
    if(TimeCnt>=100)
    {
    TimeCnt=0;
    printf("Time is out! ");
    //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" "};
    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 ",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 ",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[] = {" "};
    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;
    }
    }
    }

    四、总结及实验心得:

    掌握了通过GSM短信远程与嵌入式设备进行交互的方法。

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  • 原文地址:https://www.cnblogs.com/hell/p/6645986.html
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