| MAX6675 K-thermocouple to digital converter |
| ########################################### |
| |
| Overview |
| ******** |
| |
| This is a sample application to read an external MAX6675 |
| cold-junction-compensated K-thermocouple to digital converter. |
| |
| Requirements |
| ************ |
| |
| - MAX6675 wired to your board SPI bus |
| - K-thermocouple connected to MAX6675 T+/T- inputs |
| |
| References |
| ********** |
| |
| - MAX6675: https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf |
| |
| Building and Running |
| ******************** |
| |
| This sample can be built with any board that supports SPI. A sample overlay is |
| provided for the NUCLEO-F030R8 board. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/sensor/max6675 |
| :board: nucleo_f030r8 |
| :goals: build |
| :compact: |
| |
| Sample Output |
| ============= |
| |
| The application will read and print sensor temperature every second. Note that |
| temperature fetch will fail if the K-thermocouple is not connected. This is |
| because MAX6675 is able to detect if the K-thermocouple is connected or not. |
| |
| .. code-block:: console |
| |
| Temperature: 25.25 C |
| Temperature: 25.50 C |
| |
| <repeats endlessly every second> |
