max6675 stm32程序
时间: 2023-08-01 16:14:26 浏览: 99
以下是使用STM32和MAX6675模块进行温度测量的示例程序:
```
#include <SPI.h>
#define MAX6675_CS_PIN 10
#define MAX6675_SO_PIN 11
#define MAX6675_CLK_PIN 12
//定义SPI总线对象
SPIClass MAX6675_SPI(1);
//初始化MAX6675模块
void max6675_init()
{
pinMode(MAX6675_CS_PIN, OUTPUT);
digitalWrite(MAX6675_CS_PIN, HIGH);
MAX6675_SPI.begin(MAX6675_CLK_PIN, MAX6675_SO_PIN, MAX6675_CS_PIN);
MAX6675_SPI.setBitOrder(MSBFIRST);
MAX6675_SPI.setDataMode(SPI_MODE0);
MAX6675_SPI.setClockDivider(SPI_CLOCK_DIV128);
}
//读取MAX6675模块温度
double max6675_read()
{
byte data[2];
digitalWrite(MAX6675_CS_PIN, LOW);
delayMicroseconds(2);
MAX6675_SPI.transfer(0x00);
data[0] = MAX6675_SPI.transfer(0x00);
data[1] = MAX6675_SPI.transfer(0x00);
digitalWrite(MAX6675_CS_PIN, HIGH);
if (data[1] & 0x04)
{
return -999;
}
else
{
double temperature = ((data[0] << 8) | data[1]) >> 3;
temperature *= 0.25;
return temperature;
}
}
void setup()
{
Serial.begin(9600);
max6675_init();
}
void loop()
{
double temperature = max6675_read();
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.println(" degrees Celsius");
delay(1000);
}
```
请注意,在STM32上使用SPI接口与MAX6675模块通信时,需要使用SPI库进行配置和数据传输。如果您使用其他类型的温度传感器,请根据其规格自行编写代码。
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