STM32驱动SIM900A短信模块

简介:STM32F103C8T6驱动SIM900A短信模块源码介绍。

开发平台:KEIL ARM

MCU型号:STM32F103C8T6

传感器型号:SIM900A

特别提示:驱动内可能使用了某些其他组件,比如delay等,在文末外设模板下载地址内有。

1积分源码下载地址在文末!!!

接口图:

STM32驱动SIM900A短信模块_第1张图片

使用举例:

#include 
#include "GSM_func.h"

int main()
{
	char mes[] = "this is message";
	uint8_t recMesID = 0;
	GSM_Init(); // 初始化
	GSM_sendMessage(mes);
	while(1) {
		// 接收到短信send:1
		if((recMesID = GSM_waitMessage()) != 0) {
			char val = GSM_readMessage(recMesID); // val = 1
			printf("rec mes val:%c\n", val);
		}
	}
}

驱动源码:

GSM_config.c

#include "main.h"


#if 0
#define  GSM_USARTx                   USART1
#define  GSM_USART_CLK                RCC_APB2Periph_USART1
#define  GSM_USART_APBxClkCmd         RCC_APB2PeriphClockCmd
#define  GSM_USART_BAUDRATE           9600

#define  GSM_USART_GPIO_CLK           (RCC_APB2Periph_GPIOA)
#define  GSM_USART_GPIO_APBxClkCmd    RCC_APB2PeriphClockCmd
    
#define  GSM_USART_TX_GPIO_PORT       GPIOA   
#define  GSM_USART_TX_GPIO_PIN        GPIO_Pin_9
#define  GSM_USART_RX_GPIO_PORT       GPIOA
#define  GSM_USART_RX_GPIO_PIN        GPIO_Pin_10

#define  GSM_USART_IRQ                USART1_IRQn
#define  GSM_USART_IRQHandler         USART1_IRQHandler

#else
#define  GSM_USARTx                   USART2
#define  GSM_USART_CLK                RCC_APB1Periph_USART2
#define  GSM_USART_APBxClkCmd         RCC_APB1PeriphClockCmd
#define  GSM_USART_BAUDRATE           9600
                                        
#define  GSM_USART_GPIO_CLK           (RCC_APB2Periph_GPIOA)
#define  GSM_USART_GPIO_APBxClkCmd    RCC_APB2PeriphClockCmd
                                        
#define  GSM_USART_TX_GPIO_PORT       GPIOA   
#define  GSM_USART_TX_GPIO_PIN        GPIO_Pin_2
#define  GSM_USART_RX_GPIO_PORT       GPIOA
#define  GSM_USART_RX_GPIO_PIN        GPIO_Pin_3
                                        
#define  GSM_USART_IRQ                USART2_IRQn
#define  GSM_USART_IRQHandler         USART2_IRQHandler
#endif

//	
char GSM_USART_RX_BUF[GSM_USART_MAX_RECV_LEN]; 				
char GSM_USART_TX_BUF[GSM_USART_MAX_SEND_LEN]; 				

// [14:0]: 接收字节数 [15]: 接收完成标志
volatile uint16_t GSM_USART_RX_STA = 0;   	

// GSM串口中断处理
void GSM_USART_IRQHandler(void)
{
	uint8_t res;	      
	if(USART_GetITStatus(GSM_USARTx, USART_IT_RXNE) != RESET)
	{	 
		res = USART_ReceiveData(GSM_USARTx);
		if((GSM_USART_RX_STA&(1<<15))==0)
		{ 
			if(GSM_USART_RX_STA

GSM_config.h

#ifndef __GSM_CONFIG_H
#define __GSM_CONFIG_H	 

#include "main.h"

#define GSM_USART_MAX_RECV_LEN		128		//	接收缓存大小
#define GSM_USART_MAX_SEND_LEN		32		//  发送缓存大小
#define GSM_USART_RX_EN 			1		//  接收使能标志

#define  GSM_USARTx 				USART2

extern char  GSM_USART_RX_BUF[GSM_USART_MAX_RECV_LEN]; 
extern char  GSM_USART_TX_BUF[GSM_USART_MAX_SEND_LEN];
extern volatile uint16_t GSM_USART_RX_STA; // 接收数据状态

void GSM_USART_IRQHandler(void);
void TIM3_IRQHandler(void);
void GSM_TIM3_Init(void);
void GSM_USART_Init(uint32_t bound);

#endif

GSM_func.c

#include "main.h"
 C lib
//#include 
//#include 
//#include 
 system
//#include "delay.h"
// GSM
#include "GSM_config.h"


static char* GSM_check_cmd(char *str);
static void GSM_sendData(char* fmt,...);

// GSM信息
const char* GSM_phoneNum = "19198022169";
const char* GSM_head = "send:";

/**
  * @brief  向GSM串口发送数据
  * @param  fmt: 类似printf的数据格式
  * @retval None
  * @note   None
  */
void GSM_sendData(char* fmt,...)  
{  
	uint16_t i,j; 
	va_list ap; 
	va_start(ap,fmt);
	vsprintf((char*)GSM_USART_TX_BUF,fmt,ap);
	va_end(ap);
	i = strlen((const char*)GSM_USART_TX_BUF);		
	for(j=0; j= '0' && *p <= '9')
	{
		nNUM = nNUM * 10 + (*p - '0');
		p++;
	}
	return nNUM;
}
/**
  * @brief  发送短信
  * @param  None
  * @retval None
  */
void GSM_sendMessage(char *message)
{
	char p[40];

	#ifdef DEBUG_printf
	printf("0. AT+CPIN?\n");
	#endif
	while(GSM_send_cmd("AT+CPIN?\r\n","OK",100));		// 查询卡状态
	#ifdef DEBUG_printf
	printf("1. AT+CMGF=1\n");
	#endif
	while(GSM_send_cmd("AT+CMGF=1\r\n","OK",100));		// 设置TXT模式
	#ifdef DEBUG_printf
	printf("2. AT+CMGS=\n");
	#endif
	sprintf((char*)p,"AT+CMGS=\"%s\"\r\n",GSM_phoneNum); // 设置目标手机号
	while(GSM_send_cmd(p,">",100));  
	DELAYClass.DelayMs(50);
	#ifdef DEBUG_printf
	printf("3. %s\n",message);
	#endif
	sprintf((char*)p,"%s\r\n",message); // 设置发送内容
	GSM_send_cmd(p,">",100);  
	DELAYClass.DelayMs(50);
	#ifdef DEBUG_printf
	printf("4. %x\n", 0x1A);
	#endif
	USART_SendData(USART2, 0x1A); // 确认发送
}
/**
  * @brief  等待接收短信
  * @param  None
  * @retval 0:无短信,!0:接收到的短信的存放地址
  */
uint8_t GSM_waitMessage(void)
{
	// 接收到一次数据了
	if(GSM_USART_RX_STA&0X8000)		
	{ 
		GSM_USART_RX_BUF[GSM_USART_RX_STA&0X7FFF]=0; // 添加结束符
#ifdef DEBUG_printf
		printf("(waitMes)%s\n", GSM_USART_RX_BUF);
#endif		
		char *strx = 0;
		// 检索字符串  含有"SM",则代表接收到短信
		strx=strstr(GSM_USART_RX_BUF,"\"SM\",");
		// 返回不为空则检索到指定字符串
		if(strx != ((void *)0))
		{
#ifdef DEBUG_printf
			printf("message rec success, addr : %d\n", stringToInt(strx+5));
#endif
			uint8_t addrNum = stringToInt(strx+5); // 将地址号保存
			GSM_USART_RX_STA = 0; // 清除接收标记
			return addrNum;
		}
		GSM_USART_RX_STA = 0;
	} 
	return 0;
}
/**
  * @brief  查看短信
  * @param  None
  * @retval 返回帧头后的一个字节数据
  */
char GSM_readMessage(uint8_t addrNum)
{
	char pp[40];
	uint8_t i = 0;
	sprintf((char*)pp,"AT+CMGR=%d\r\n",addrNum); // 查看该地址下的短信
	GSM_USART_RX_STA = 0;
	// 等待2s
	for(i = 0; i <= 200; i++) 
	{
		if(i % 50 == 0) // 每0.5s重发一次
		{
#ifdef DEBUG_printf
			printf("i = %d\n", i);
#endif
			GSM_sendData("%s", pp);
		}
		DELAYClass.DelayMs(10);
		if(GSM_USART_RX_STA&0X8000)		
		{ 
			// 添加结束符
			GSM_USART_RX_BUF[GSM_USART_RX_STA&0X7FFF]=0;
#ifdef DEBUG_printf
			printf("(readMes)%s\n", GSM_USART_RX_BUF);
#endif
			char *strx = 0;
			// 检索字符串  含有"send:",则代表查看短信成功
			strx=strstr(GSM_USART_RX_BUF,GSM_head);
			// 返回不为空则检索到指定字符串
			if(strx != ((void *)0))
			{
#ifdef DEBUG_printf
				printf("message read success, cmd : %c\n", strx[5]);
#endif
				char cmd = 0;
				cmd = strx[5]; // 此处可根据需求修改 当前是返回的send:后的一个字节
				GSM_USART_RX_STA = 0; // 清除接收标记
				DELAYClass.DelayMs(10);
				sprintf((char*)pp,"AT+CMGD=%d\r\n",addrNum); // 删除该地址下的短信
				GSM_sendData("%s", pp);
				return cmd;
			}
			GSM_USART_RX_STA = 0;
		}
	}
	GSM_USART_RX_STA = 0;
	return 0;
}
/**
  * @brief  GSM初始化
  * @param  None
  * @retval None
  * @note   None
	*/
void GSM_Init(void)
{
	GSM_USART_Init(9600);
	GSM_TIM3_Init();
}

GSM_func.h

#ifndef __GSM_FUNC_H
#define __GSM_FUNC_H

#include "main.h"


char GSM_send_cmd(char *cmd,char *ack,uint16_t waittime);
int stringToInt(char *str);
void GSM_sendMessage(char *message);
uint8_t GSM_waitMessage(void);
char GSM_readMessage(uint8_t addrNum);
void GSM_Init(void);

#endif

驱动下载地址:

https://download.csdn.net/download/m0_50669075/87672911

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