I am trying to upgrade to an RTD and I am having trouble getting Marlin to read temperature values on extruder 0. I am using an MKS_GEN_L motherboard and an Adafruit MAX31856 amplifier board. The adafruit library test program returns valid values so i am confident that I have the hardware connected properly. The issue seems to be with Marlin. I am using Marlin bugfix 2.0x. I was getting a clby sysimgrp - Firmware - Marlin