SimpleMethod/STM32-MAX31855

STM32 library for MAX31855 temperature sensor using HAL and SPI

STM32 MAX31855

STM32 library for MAX31855 temperature sensor using HAL and SPI

Example:

 /* USER CODE BEGIN 2 */
	MAX31855_Init(&MAX31855_Handle, &hspi3,SPI3_NSS_GPIO_Port, SPI3_NSS_Pin);
	uint32_t Timer = HAL_GetTick();
 /* USER CODE END 2 */
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
	while (1) {

		if ((HAL_GetTick() - Timer) > 1000) {
			MAX31855_ReadData(&MAX31855_Handle);
			if(!MAX31855_GetFault(&MAX31855_Handle))
			{
			printf("Temperature: %f\r\nInternal temperature: %f\r\n", MAX31855_GetTemperature(&MAX31855_Handle),MAX31855_GetTemperatureInFahrenheit(&MAX31855_Handle));
			}
			Timer = HAL_GetTick();
		}
		/* USER CODE END WHILE */
		/* USER CODE BEGIN 3 */
	}
 /* USER CODE END 3 */

SPI Settings:

Options	Value
Mode	Full-Duplex Master
Frame Format	Motorola
Data Size	8 Bits
First Bite	MSB First
Clock Polarity (CPOL)	Low
Clock Phase (CPHA)	1 Edge

If using SPI in "Receive only the Master" mode, see this case: #1

For using printf with float is needed add -u _printf_float in MCU GCC linker