帮我写一段基于stm32f103的ds18b20测温蜂鸣器报警的代码
时间: 2023-07-15 08:14:15 浏览: 204
stm32f103接ds18b20代码
好的,以下是基于stm32f103的ds18b20测温蜂鸣器报警的代码,你可以参考一下:
```c
#include "stm32f10x.h"
#include "ds18b20.h"
void Delay(__IO uint32_t nCount);
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);
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);
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_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
ds18b20_init(GPIOA, GPIO_Pin_10);
float temperature;
while (1)
{
temperature = ds18b20_get_temp();
if (temperature > 30.0)
{
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_SetBits(GPIOA, GPIO_Pin_8);
Delay(500000);
GPIO_ResetBits(GPIOA, GPIO_Pin_8);
Delay(500000);
}
USART_SendData(USART1, temperature);
Delay(500000);
}
}
void Delay(__IO uint32_t nCount)
{
while (nCount--)
{
}
}
```
在这个代码中,我们使用了STM32F103芯片,通过GPIO口和USART串口与ds18b20温度传感器进行通信,并且当温度高于30摄氏度时,会触发蜂鸣器报警。需要注意的是,这只是一个简单的示例代码,你需要根据具体情况进行修改和调试。
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