基于stm32f103的mlx90614红外检测程序源码
时间: 2023-09-23 18:11:28 浏览: 46
以下是基于stm32f103的mlx90614红外检测程序的示例代码:
```c
#include "stm32f10x.h"
#include "i2c.h"
#include "delay.h"
#define SCL GPIO_Pin_6
#define SDA GPIO_Pin_7
#define IIC_SCL_H GPIO_SetBits(GPIOB, SCL)
#define IIC_SCL_L GPIO_ResetBits(GPIOB, SCL)
#define IIC_SDA_H GPIO_SetBits(GPIOB, SDA)
#define IIC_SDA_L GPIO_ResetBits(GPIOB, SDA)
#define IIC_SDA_IN GPIO_InitTypeDef GPIO_InitStructure; \
GPIO_InitStructure.GPIO_Pin = SDA; \
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; \
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; \
GPIO_Init(GPIOB, &GPIO_InitStructure)
#define IIC_SDA_OUT GPIO_InitTypeDef GPIO_InitStructure; \
GPIO_InitStructure.GPIO_Pin = SDA; \
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; \
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; \
GPIO_Init(GPIOB, &GPIO_InitStructure)
void IIC_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = SCL | SDA;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
IIC_SCL_H;
IIC_SDA_H;
}
void IIC_Start(void)
{
IIC_SDA_OUT;
IIC_SDA_H;
IIC_SCL_H;
delay_us(5);
IIC_SDA_L;
delay_us(5);
IIC_SCL_L;
}
void IIC_Stop(void)
{
IIC_SDA_OUT;
IIC_SCL_L;
IIC_SDA_L;
delay_us(5);
IIC_SCL_H;
IIC_SDA_H;
delay_us(5);
}
uint8_t IIC_WaitAck(void)
{
uint16_t cnt = 0;
IIC_SDA_IN;
IIC_SDA_H;
delay_us(1);
IIC_SCL_H;
delay_us(1);
while (GPIO_ReadInputDataBit(GPIOB, SDA))
{
cnt++;
if (cnt > 250)
{
IIC_Stop();
return 1;
}
}
IIC_SCL_L;
return 0;
}
void IIC_SendByte(uint8_t byte)
{
uint8_t i;
IIC_SDA_OUT;
for (i = 0; i < 8; i++)
{
if (byte & 0x80)
IIC_SDA_H;
else
IIC_SDA_L;
byte <<= 1;
delay_us(1);
IIC_SCL_H;
delay_us(1);
IIC_SCL_L;
}
}
uint8_t IIC_ReceiveByte(void)
{
uint8_t i, byte = 0;
IIC_SDA_IN;
for (i = 0; i < 8; i++)
{
byte <<= 1;
IIC_SCL_H;
delay_us(1);
if (GPIO_ReadInputDataBit(GPIOB, SDA))
byte |= 0x01;
IIC_SCL_L;
delay_us(1);
}
return byte;
}
uint16_t MLX90614_ReadTemp(void)
{
uint16_t temp;
IIC_Start();
IIC_SendByte(0xB4);
IIC_SendByte(0x07);
IIC_Stop();
delay_ms(5);
IIC_Start();
IIC_SendByte(0xB5);
temp = IIC_ReceiveByte() << 8;
temp |= IIC_ReceiveByte();
IIC_Stop();
return temp;
}
int main(void)
{
uint16_t temp;
IIC_Init();
while (1)
{
temp = MLX90614_ReadTemp();
temp = (temp * 0.02) - 273.15;
delay_ms(1000);
}
}
```
该代码使用了STM32F103芯片,以及I2C通信协议,通过读取MLX90614红外检测模块的寄存器数据,计算出温度值并输出。需要注意的是,该代码仅供参考,具体实现还需根据实际情况进行调整。