Working fine with MAX3165 and a PT100 probe.
Using a modified version of Adafruit MAX31865 library. Added a default
constructor in order to allow lazy initialization once GPIO definitions
were loaded.
Tested on a Sonoff TH PCB Board 2.1 2018-06-15 using the following GPIO
mapping:
GPIO Orig Func SSPI I/O HEADER HEADER2 S-JACK
15 BOOT MODE CLK O 1
14 MISO I 2 TIP
4 MOSI O 3 RING1
VCC 1 VCC 4 RING3
2 DBG BOOT ~CS O 5 EXP-LOG
GND 4 GND RING2
HEADER2 is a 4-pin .1 header glued in the middle of the PCB to connect
to several GPIO locations on the Sonoff TH PCB.
TODO: Merge with MAX31855 code.
Alberto Lopez