任务
- 基于STC89C52系列51单片机（内存有限）
- 使用GSM模块（SIM800，GA6等，目前支持移动卡，部分地区关闭了2G网络则无法使用）
- 采用LCD1602显示相关信息，如Phone number，message等。
实物
资料内容
源代码
主函数
/*******************************************************************************
* 文件名称：基于STM32的智能生态鱼缸
* 实验目的：1.
* 2.
* 程序说明：完整程序Q:2772272579;@: [email protected]
* 日期版本：本项目分享关键细节，熟悉使用单片机的可做参考代码。完整讲解+源代码工程可联系获取，可定制。
*******************************************************************************/
#include "config.h"
#include "lcd1602.h"
#include "UART.H"
#include "gsmA6.h"
#include "Timer0.h"
sbit k1=P2^0;
void Key_Touch(void)
{
if(k1==0){
Delay_ms(20);
if(k1==0)
{
write_string(1,0,"Send:13956413848");
write_string(2,0," Sending SMS ");
if(GSMA6_text_message("13956413848","SMS System ,Made By Zhang Hu") == 1)
{
write_string(1,0,"Send:13956413848");
write_string(2,0," successfully! ");
}
else
{
write_string(1,0,"Send:13956413848");
write_string(2,0," fail in send! ");
}
Delay_ms(3000);
write_string(1,0,"GSM Init Success");
write_string(2,0,"Waiting SMS");
}
while(k1==0);
}
}
void main()
{
Init_1602();
UART_Init();
Timer0Init();
Delay_ms(5000);
if(GSMA6_Init() == 1) //初始化成功
{
write_string(1,0,"GSM Init Success");
write_string(2,0,"Waiting SMS");
}
else
{
write_string(1,0," Sorry ,GSMA6 ");
write_string(2,0,"SysTemInit Error");
}
while(1)
{
GSMA6_ReadMessageTest();
Key_Touch();
}
}
优化的GA6驱动
由于51单片机内存不足，无法使用大内存数组存放串口获取到的GSM反馈信息，故而需要极为慎重的分配内存资源，防止出现内存溢出。需要合理分配单片机内存的使用，尽量减少变量。
#include "gsmA6.h"
#include <stdio.h>
#include <string.h>
#include "delay.h"
#include "lcd1602.h"
bit is_getGsmData=0;
char xdata GSMA6_RECEICV_BUFFER[GSMA6_USART_REC_LEN];
u8 GSMA6_point = 0;
void GSMA6_Receive_Byte(char res)
{
/*发现个很严重的问题，这模块回馈信息不知道怎么回事有0x00，就算我清空用的是255，数组接收中依然有0x00，而这个又代表字符串结束符，导致strstr直接使用时strlen判定字符串长度变成了0*/
if(res != 0x00)
{
GSMA6_RECEICV_BUFFER[GSMA6_point++] = res;
if(GSMA6_point>6)
{
is_getGsmData = 1;
}
if(GSMA6_point>=GSMA6_USART_REC_LEN)
{
GSMA6_point=0;
}
}
}
void GSMA6_ClearDate(void)
{
u8 k=0;
for(k=0;k<GSMA6_USART_REC_LEN;k++) //将缓存内容清零
{
GSMA6_RECEICV_BUFFER[k] = 0;
}
GSMA6_point=0;
is_getGsmData=0;
}
char GSMA6_Find(char *a)
{
if(strstr(GSMA6_RECEICV_BUFFER,a)!=NULL)
{
return 1;
}
else
{
return 0;
}
}
/**********************************
发送命令
**********************************/
void GSMA6_Send_Command(char *s)
{
GSMA6_ClearDate();
while(*s != '\0')//检测字符串结束符
{
GSMA6_USART_SendData(*s++);//发送当前字符
}
GSMA6_UART_SendLR();
// GSMA6_ClearDate();
}
void GSMA6_Send_Command_END(char *s)
{
GSMA6_ClearDate();
while(*s != '\0')//检测字符串结束符
{
GSMA6_USART_SendData(*s++);//发送当前字符
}
}
char GSMA6_Send_AT_Command(char *b,char *a,char wait_time,u16 charerval_time)
{
char i;
GSMA6_ClearDate(); // 清除缓存数据
i = 0;
while(i < wait_time)
{
GSMA6_Send_Command(b);
Delay_ms(charerval_time);
if(GSMA6_Find(a)) //查找需要应答的字符
{
return 1;
}
i++;
}
return 0;
}
char GSMA6_Send_AT_Command_END(char *b,char *a,char wait_time,u16 charerval_time)
{
char i;
GSMA6_ClearDate();
i = 0;
while(i < wait_time)
{
GSMA6_Send_Command_END(b);
Delay_ms(charerval_time);
if(GSMA6_Find(a)) //查找需要应答的字符
{
return 1;
}
i++;
}
return 0;
}
/***************************************************************
查询状态。
****************************************************************/
char GSMA6_Check_Status(void)
{
char ret;
ret = GSMA6_Send_AT_Command((char *)"AT",(char *)"OK",3,1000);//测试通信是否成功
if(ret == 0)
{
return COMMUNITE_ERROR;
}
ret = GSMA6_Send_AT_Command((char *)"AT+CPIN?",(char *)"READY",3,1000);//查询卡是否插上
if(ret == 0)
{
return NO_SIM_CARD_ERROR;
}
ret = GSMA6_Send_AT_Command((char *)"AT+CREG?",(char *)"+CREG: 1,1",5,2000);//查询卡是否注册到网络
if(ret == 0)
{
return SIM_CARD_NO_REG_ERROR;
}
ret = GSMA6_Send_AT_Command((char *)"AT+CMGD=1,4",(char *)"OK",3,3000);//删除所有短信 新增
if(ret == 0)
{
return AT_DELET_SMS_ERROR;
}
return 1;
}
char GSMA6_Config_Format(void)
{
char ret;
//设置存储位置
ret = GSMA6_Send_AT_Command((char *)"AT+CPMS=\"SM\",\"ME\",\"SM\"",(char *)"OK",3,1000);
if(ret == 0)
{
return AT_CPMS_ERROR;
}
ret = GSMA6_Send_AT_Command((char *)"AT+CMGF=1",(char *)"OK",3,1000);//配置为TEXT模式
if(ret == 0)
{
return AT_CMGF_ERROR;
}
ret = GSMA6_Send_AT_Command((char *)"AT+CSCS=\"GSM\"",(char *)"OK",3,1000);//设置字符格式
if(ret == 0)
{
return AT_CSCS_ERROR;
}
ret = GSMA6_Send_AT_Command((char *)"AT+CNMI=2,1",(char *)"OK",3,1000);//设置收到短信提示
if(ret == 0)
{
return AT_CNMI_ERROR;
}
return 1;
}
/***************************************************************
发送短信给对应手机号
****************************************************************/
char xdata AT_Cmd_GMGS[25];
char GSMA6_text_message(char *phoneNum,char *content)
{
char ret;
char end_char[2]; //信息结束字符串
end_char[0] = 0x1A;//结束字符
end_char[1] = '\0';
memset(AT_Cmd_GMGS,'\0',25); //先清空,再 对AT_CMGR 赋值
strcpy((char *)AT_Cmd_GMGS,"AT+CMGS=\""); // strcpy从目标地址0 开始拷贝
strcat((char *)AT_Cmd_GMGS,(char *)phoneNum); //strcat从目标地址字符串后开始连接
strcat((char *)AT_Cmd_GMGS,"\"\r");
//设置存储位置
ret = GSMA6_Config_Format();
if(ret != 1)
{
return ret;
}
ret = GSMA6_Send_AT_Command(AT_Cmd_GMGS,(char *)">",3,1000);//输入收信人的电话号码 set_phone_num
if(ret == 0)
{
return AT_CMGS_ERROR;
}
GSMA6_USART_SendStr(content); //此函数发送短信内容 不加回车换行
ret = GSMA6_Send_AT_Command_END(end_char,(char *)"OK",1,4000);//发送结束符，等待返回ok,等待5S发一次，因为短信成功发送的状态时间比较长
if(ret == 0)
{
return END_char_ERROR;
}
return 1;
}
char xdata PhoneNumber[GSMA6_REC_PHONENUMLEN];
char xdata LCD_ShowMessage[17];
char GSMA6_ReadMessageTest(void)
{
char *subString;
char *subStringNext;
char AT_CMGR[15];
char AT_SMSNum[3];
if(is_getGsmData)
{
Delay_ms(1000);
is_getGsmData = 0;
if(GSMA6_Find("+CMTI"))
{
if((subString = strstr(GSMA6_RECEICV_BUFFER, "SM\",")) != NULL)
{
subString+=4;
if ((subStringNext = strstr(subString, "\r")) != NULL)
{
memset(AT_SMSNum, 0, 3);
memcpy(AT_SMSNum, subString, subStringNext - subString);
memset(AT_CMGR,'\0',15);
strcpy(AT_CMGR,"AT+CMGR=");
strcat(AT_CMGR,AT_SMSNum);
if(GSMA6_Send_AT_Command((char *)AT_CMGR,(char *)"OK",3,1000))
{
Delay_ms(100);
if((subString = strstr(GSMA6_RECEICV_BUFFER, "+86")) != NULL)
{
subString+=3;
if((subStringNext = strstr(subString, "\"")) != NULL)
{
memset(PhoneNumber, 0, GSMA6_REC_PHONENUMLEN);
memcpy(PhoneNumber, subString, subStringNext - subString); //获取手机号
memset(LCD_ShowMessage, 0, 17);
sprintf(LCD_ShowMessage,"M:%s,%s ",AT_SMSNum,PhoneNumber);
write_string(1,0,LCD_ShowMessage);
subString = subStringNext+5;
if((subStringNext = strstr(subString, "\n")) != NULL)// 短信前\r\n 短信后\r\n
{
subString = subStringNext+1;
if((subStringNext = strstr(subString, "\r")) != NULL)
{
memset(LCD_ShowMessage, 0, 17);
if(subStringNext - subString>16)
{
memcpy(LCD_ShowMessage, subString,16);
}
else{
memcpy(LCD_ShowMessage, subString,subStringNext - subString);
}
// sprintf(LCD_ShowMessage,"R:%s",LCD_ShowMessage);
write_string(2,0," ");
write_string(2,0,LCD_ShowMessage);
GSMA6_text_message(PhoneNumber,LCD_ShowMessage);
}
}
}
}
else if((subString = strstr(GSMA6_RECEICV_BUFFER, "READ")) != NULL)
{
subString+=7;
if((subStringNext = strstr(subString, "\"")) != NULL)
{
memset(PhoneNumber, 0, GSMA6_REC_PHONENUMLEN);
memcpy(PhoneNumber, subString, subStringNext - subString); //获取手机号
memset(LCD_ShowMessage, 0, 17);
sprintf(LCD_ShowMessage,"M:%s,%s ",AT_SMSNum,PhoneNumber);
write_string(1,0,LCD_ShowMessage);
subString = subStringNext+5;
if((subStringNext = strstr(subString, "\n")) != NULL)// 短信前\r\n 短信后\r\n
{
subString = subStringNext+1;
if((subStringNext = strstr(subString, "\r")) != NULL)
{
memset(LCD_ShowMessage, 0, 17);
if(subStringNext - subString>16)
{
memcpy(LCD_ShowMessage, subString,16);
}
else{
memcpy(LCD_ShowMessage, subString,subStringNext - subString);
}
// sprintf(LCD_ShowMessage,"R:%s",LCD_ShowMessage);
write_string(2,0," ");
write_string(2,0,LCD_ShowMessage);
GSMA6_text_message(PhoneNumber,LCD_ShowMessage);
}
}
}
}
else{
GSMA6_ClearDate();
return TEXT_CMD_SMCHECKError;
}
// if(GSMA6_Find("check")) //指令
// {
// GSMA6_ClearDate();
// return TEXT_CMD_CHECK;
// }
}
else
{
GSMA6_ClearDate();
return TEXT_CMD_SMCHECKError;
}
}
}
GSMA6_ClearDate();
return TEXT_CMD_READ_NOSM;
}
else //必须要有
{
GSMA6_ClearDate();
}
}
Delay_ms(100);
return TEXT_CMD_READ_ERROR;
}
char GSMA6_Init(void)
{
char ret = 0;
GSMA6_ClearDate();
ret = GSMA6_Check_Status();
if(ret != 1)
{
return ret;
}
ret = GSMA6_Config_Format();
if(ret != 1)
{
return ret;
}
GSMA6_ClearDate();
return 1;
}