STM32驱动SIM900A短信模块-Toy模板网

这篇具有很好参考价值的文章主要介绍了STM32驱动SIM900A短信模块。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

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

使用举例：

#include <stdio.h>
#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_USART_MAX_RECV_LEN)
			{
				TIM_SetCounter(TIM3,0);
				if(GSM_USART_RX_STA==0) 
				{
					TIM_Cmd(TIM3,ENABLE);
				}
				GSM_USART_RX_BUF[GSM_USART_RX_STA++]=res;	
			}else 
			{
				GSM_USART_RX_STA|=1<<15;
			} 
		}
		USART_ClearITPendingBit(GSM_USARTx, USART_IT_RXNE);
	}  				 											 
}   
// TIM3中断处理
void TIM3_IRQHandler(void)
{ 	
	if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)
	{	 			   
		GSM_USART_RX_STA|=1<<15;
		TIM_ClearITPendingBit(TIM3, TIM_IT_Update);
		TIM_Cmd(TIM3, DISABLE); 
	}	    
}
/**
  * @brief  GSM 10ms定时器初始化
  * @param  None
  * @retval None
  * @note   用于检测GSM串口接收状态
*/
void GSM_TIM3_Init(void)
{	
	NVIC_InitTypeDef NVIC_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
	
	TIM_DeInit(TIM3);
	TIM_TimeBaseStructure.TIM_Period = 1000-1; 
	TIM_TimeBaseStructure.TIM_Prescaler = 7200-1; 
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; 
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

	TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
	TIM_Cmd(TIM3,DISABLE);

	NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
}
/**
  * @brief  GSM 串口初始化
  * @param  bound: 波特率
  * @retval None
  * @note   None
*/
void GSM_USART_Init(uint32_t bound)
{  
	NVIC_InitTypeDef NVIC_InitStructure;
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;

	GSM_USART_GPIO_APBxClkCmd(GSM_USART_GPIO_CLK, ENABLE);
	GSM_USART_APBxClkCmd(GSM_USART_CLK,ENABLE);

 	USART_DeInit(GSM_USARTx); 
	//USART_TX
	GPIO_InitStructure.GPIO_Pin = GSM_USART_TX_GPIO_PIN;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_Init(GSM_USART_TX_GPIO_PORT, &GPIO_InitStructure);
	//USART_RX
	GPIO_InitStructure.GPIO_Pin = GSM_USART_RX_GPIO_PIN;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	GPIO_Init(GSM_USART_RX_GPIO_PORT, &GPIO_InitStructure);
	
	USART_InitStructure.USART_BaudRate = bound;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_Parity = USART_Parity_No;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;	
	USART_Init(GSM_USARTx, &USART_InitStructure);
	
	USART_Cmd(GSM_USARTx, ENABLE);
	USART_ITConfig(GSM_USARTx, USART_IT_RXNE, ENABLE);
	
	NVIC_InitStructure.NVIC_IRQChannel = GSM_USART_IRQ;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);	//
	
	GSM_USART_RX_STA=0;
}

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 <stdlib.h>
//#include <string.h>
//#include <stdio.h>
 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<i; j++)						
	{
	  while(USART_GetFlagStatus(GSM_USARTx,USART_FLAG_TC)==RESET); 
		USART_SendData(GSM_USARTx,GSM_USART_TX_BUF[j]); 
	} 
}
/**
  * @brief  检测应答
  * @param  str: 期待的应答结果
  * @retval 0: 没有接收到期待应答
  * @retval !0: 其他值代表期待应答结果的位置
  * @note   None
  */
static char* GSM_check_cmd(char *str)
{
	char *strx=0;
	// 接收到一次数据了
	if(GSM_USART_RX_STA&0X8000)		
	{ 
		// 添加结束符
		GSM_USART_RX_BUF[GSM_USART_RX_STA&0X7FFF]=0;
		// 检索字符串
		strx=strstr(GSM_USART_RX_BUF,str);
		#ifdef DEBUG_printf
		printf("rec data: %s\n",GSM_USART_RX_BUF);
		#endif
	} 
	return strx;
}
/**
  * @brief  向GSM发送命令
  * @param  cmd: 发送的命令字符串
  * @param	ack: 期待的应答结果,如果为空,则表示不需要等待应答
  * @param	waittime: 等待时间(单位:10ms)
  * @retval 0: 发送成功(得到了期待的应答结果), 
  * @retval	1: 发送失败
  * @note   None
  */
char GSM_send_cmd(char *cmd,char *ack,uint16_t waittime)
{
	char res=0; 
	GSM_USART_RX_STA=0;
	//发送命令
	GSM_sendData("%s",cmd);	
	if(ack&&waittime)		//需要等待应答
	{
		while(--waittime)	//等待倒计时
		{
			DELAYClass.DelayMs(10);
			if(GSM_USART_RX_STA&0X8000)//接收到期待的应答结果
			{
				if(GSM_check_cmd(ack) != ((void *)0))
				{
					break; // 得到有效数据 
				}
				GSM_USART_RX_STA=0;
			} 
		}
		if(waittime==0)res=1; 
	}
	return res;
} 
/**
  * @brief  string转换int
  * @param  *str:字符串地址
  * @retval 返回int型
  * @note   None
  */
int stringToInt(char *str)
{
	char *p = str;
	int nNUM = 0;
	
	while (*p >= '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

STM32工程模板、外设模板、模块模板下载地址：

stm32_template: STM32F103工程模板，外设模板，模块模板。模块模板包括：DHT11温湿度传感器，OLED屏幕，DS18B20温度传感器，DS1302时钟模块，红外测温模块，RFID模块，SIM900A短信模块，OneNET入网，ADXL345三轴传感器，离线语音识别模块，语音播报模块，甲醛传感器，PM2.5模块，SG90舵机，健康检测模块，消息队列示例，链表示例，分时调度系统示例等。文章来源地址https://www.toymoban.com/news/detail-477541.html

到了这里，关于STM32驱动SIM900A短信模块的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！