void SIM900A_Init(void) { USART_InitTypeDef USART_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE); // 配置USART1的GPIO GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); // 配置USART1 USART_InitStructure.USART_BaudRate = 9600; 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(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); // 等待SIM900A模块启动 delay_ms(5000); } void SIM900A_SendCommand(char* command) { while(*command) { USART_SendData(SIM900A_USART, *command++); while(USART_GetFlagStatus(SIM900A_USART, USART_FLAG_TC) == RESET); } } void SIM900A_SendSMS(char* phoneNumber, char* message) { SIM900A_SendCommand("AT+CMGF=1"); // 设置短信格式为文本模式 SIM900A_SendCommand("AT+CMGS=\"+86"); // 设置手机号码 SIM900A_SendCommand(phoneNumber); SIM900A_SendCommand("\""); SIM900A_SendCommand(message); // 发送短信内容 USART_SendData(SIM900A_USART, 0x1A); // 发送Ctrl+Z结束短信 while(USART_GetFlagStatus(SIM900A_USART, USART_FLAG_TC) == RESET); } void SIM900A_SendSMS_Chinese(char* phoneNumber, char* message) { char ucs2Message[200]; u8 i; u8 j; SIM900A_SendCommand("AT+CMGF=0"); // 设置短信格式为PDU模式 SIM900A_SendCommand("AT+CSCS=\"UCS2\""); // 设置字符集为UCS2 SIM900A_SendCommand("AT+CSMP=17,167,0,8"); // 设置短信参数 SIM900A_SendCommand("AT+CMGS=\"+86"); // 设置手机号码 SIM900A_SendCommand(phoneNumber); SIM900A_SendCommand("\""); for(i = 0, j = 0; i < strlen(message); i += 2, j += 4) { sprintf(&ucs2Message[j], "%02X%02X", message[i+1], message[i]); } ucs2Message[j] = '\0'; SIM900A_SendCommand(ucs2Message); // 发送短信内容 USART_SendData(SIM900A_USART, 0x1A); // 发送Ctrl+Z结束短信 while(USART_GetFlagStatus(SIM900A_USART, USART_FLAG_TC) == RESET); }
时间: 2024-03-26 22:37:31 浏览: 11
这段代码是用来控制 SIM900A 模块发送短信的,包括初始化、发送 ASCII 码短信、发送中文短信。其中 SIM900A_Init 函数用来初始化 USART1 和 SIM900A 模块,SIM900A_SendCommand 函数用来发送 AT 指令,SIM900A_SendSMS 函数用来发送 ASCII 码短信,SIM900A_SendSMS_Chinese 函数用来发送中文短信。
相关问题
u8* sim900a_test_msg="温度temp,湿度shi%";写出这段代码具有变量的代码
以下是具有变量的代码:
```c++
float temperature = 25.5;
int humidity = 60;
char msg[50];
sprintf(msg, "温度%.1f℃,湿度%d%%", temperature, humidity);
u8* sim900a_test_msg = (u8*)msg;
```
这段代码将浮点数变量`temperature`和整数变量`humidity`的值插入到字符串中,并将结果存储在`msg`数组中。最后,将`msg`数组转换为`u8*`类型的变量`sim900a_test_msg`。
sim900A 的stm32代码
以下是一个简单的 sim900A 模块使用 STM32 的代码示例,可以作为参考:
```c
#include "stm32f10x.h"
#include "stdio.h"
#include "string.h"
#define SIM900A_USART USART1
#define SIM900A_TX_PIN GPIO_Pin_9
#define SIM900A_RX_PIN GPIO_Pin_10
#define SIM900A_USART_GPIO GPIOA
#define SIM900A_USART_GPIO_CLK RCC_APB2Periph_GPIOA
#define SIM900A_PWR_PIN GPIO_Pin_11
#define SIM900A_RST_PIN GPIO_Pin_12
#define SIM900A_CTRL_GPIO GPIOB
#define SIM900A_CTRL_GPIO_CLK RCC_APB2Periph_GPIOB
#define SIM900A_BUFFER_SIZE 1024
#define SIM900A_TIMEOUT 1000
static uint8_t sim900a_buffer[SIM900A_BUFFER_SIZE];
static uint16_t sim900a_buffer_index = 0;
static uint8_t sim900a_rx_flag = 0;
void sim900a_init(void)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | SIM900A_USART_GPIO_CLK | SIM900A_CTRL_GPIO_CLK, ENABLE);
GPIO_InitStructure.GPIO_Pin = SIM900A_TX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SIM900A_USART_GPIO, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SIM900A_RX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(SIM900A_USART_GPIO, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 9600;
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(SIM900A_USART, &USART_InitStructure);
USART_Cmd(SIM900A_USART, ENABLE);
GPIO_InitStructure.GPIO_Pin = SIM900A_PWR_PIN | SIM900A_RST_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SIM900A_CTRL_GPIO, &GPIO_InitStructure);
GPIO_SetBits(SIM900A_CTRL_GPIO, SIM900A_PWR_PIN);
GPIO_SetBits(SIM900A_CTRL_GPIO, SIM900A_RST_PIN);
}
void sim900a_send_byte(uint8_t data)
{
USART_SendData(SIM900A_USART, data);
while (USART_GetFlagStatus(SIM900A_USART, USART_FLAG_TXE) == RESET);
}
void sim900a_send_string(char *str)
{
while (*str)
{
sim900a_send_byte(*str++);
}
}
uint8_t sim900a_receive_byte(void)
{
while (USART_GetFlagStatus(SIM900A_USART, USART_FLAG_RXNE) == RESET);
return USART_ReceiveData(SIM900A_USART);
}
void sim900a_receive_data(void)
{
uint8_t data;
while (USART_GetFlagStatus(SIM900A_USART, USART_FLAG_RXNE) != RESET)
{
data = sim900a_receive_byte();
if (sim900a_buffer_index < SIM900A_BUFFER_SIZE)
{
sim900a_buffer[sim900a_buffer_index++] = data;
if (data == '\n' || data == '\r')
{
sim900a_rx_flag = 1;
}
}
else
{
sim900a_buffer_index = 0;
}
}
}
uint8_t sim900a_send_command(const char *command, const char *response, uint16_t timeout)
{
uint16_t i;
sim900a_buffer_index = 0;
sim900a_rx_flag = 0;
sim900a_send_string((char *)command);
sim900a_send_string("\r\n");
for (i = 0; i < timeout; i++)
{
sim900a_receive_data();
if (sim900a_rx_flag)
{
if (strstr((char *)sim900a_buffer, response))
{
return 1;
}
sim900a_rx_flag = 0;
sim900a_buffer_index = 0;
}
delay_ms(1);
}
return 0;
}
int main(void)
{
sim900a_init();
while (1)
{
if (sim900a_send_command("AT", "OK", SIM900A_TIMEOUT))
{
printf("SIM900A is ready.\n");
}
else
{
printf("SIM900A is not responding.\n");
}
delay_ms(1000);
}
}
```
需要注意的是,以上代码仅作为示例,实际使用时需要根据具体的硬件连接和需求进行修改。同时,使用 sim900A 模块需要注意其电源、复位等控制引脚的使用方法。