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🐛 Fix and improve MAX31865 (#23215)

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Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
This commit is contained in:
John Lagonikas
2021-12-08 20:55:09 +02:00
committed by GitHub
parent 0a64209305
commit 9e6ded3cdf
5 changed files with 238 additions and 141 deletions
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9
Marlin/Configuration_adv.h
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@@ -142,11 +142,20 @@
* FORCE_HW_SPI: Ignore SCK/MOSI/MISO pins and just use the CS pin & default SPI bus.
* MAX31865_WIRES: Set the number of wires for the probe connected to a MAX31865 board, 2-4. Default: 2
* MAX31865_50HZ: Enable 50Hz filter instead of the default 60Hz.
* MAX31865_USE_READ_ERROR_DETECTION: Detects random read errors from value spikes (a 20°C difference in less than 1sec)
* MAX31865_USE_AUTO_MODE: Faster and more frequent reads than 1-shot, but bias voltage always on, slightly affecting RTD temperature.
* MAX31865_MIN_SAMPLING_TIME_MSEC: in 1-shot mode, the minimum time between subsequent reads. This reduces the effect of bias voltage by leaving the sensor unpowered for longer intervals.
* MAX31865_WIRE_OHMS: In 2-wire configurations, manually set the wire resistance for more accurate readings
*/
//#define TEMP_SENSOR_FORCE_HW_SPI
//#define MAX31865_SENSOR_WIRES_0 2
//#define MAX31865_SENSOR_WIRES_1 2
//#define MAX31865_50HZ_FILTER
//#define MAX31865_USE_READ_ERROR_DETECTION
//#define MAX31865_USE_AUTO_MODE
//#define MAX31865_MIN_SAMPLING_TIME_MSEC 100
//#define MAX31865_WIRE_OHMS_0 0.0f
//#define MAX31865_WIRE_OHMS_1 0.0f
/**
* Hephestos 2 24V heated bed upgrade kit.