Help with Firmware/Pin mapping on GT2560 Rev A+

[gentijo]

moved from control board index.


I have a GT2560 Rev a+ and I want to compile code for it. The code compiles but some of the pin mappings don't make sense. Not sure if they are just wrong, I don't have the right schematic or my misunderstanding on how Marlin works.

I downloaded the V1 firmware from https://www.geeetech.com/wiki/index.php/GT2560
Schematics from http://www.geeetech.com/forum/viewtopic ... tic#p38013

1) In configuration.h,
Temp_Sensor_1 & 2 are defined as -1 which appears to define an external ADC (AD595),
The schematic has the Temp_sensor_1 input tied to ADC8 (PK0), assuming this is the hot bed temp.
The schematic has the Temp_sensor_2 input tied to ADC9 (PK1), assuming this is the hot bed temp.
Temp_Sensor_Bed is 0, unused, which doesn't seem correct.

In Pins.h, for MOTHERBOARD == 7,
Temp_Bed_Pin = 10
Temp_0_Pin = 8

In SD2_PinMap for CPU = Mega2560
Pin 10 = Port/pin B4 (PWM6)
Pin 8 = Port/pin H5

PK0 is mapped as pin 62, PK1 = 63

Am I reading this right,
Should Temp_0_Sensor be set to 1 (100K thermistor 4.7k pullup) vs AD595, in configuration.h
Should MOTHERBOARD == 7 configure Temp_0_Pin be mapped to 62, Temp_1 to 63 in Pins.h to map to ADC8/PK0 and ADC9/PK1 ?

Thank you
John G.

[Olimatou]

Hi,

I have the Rev A+, you can have a glimpse at my Marlin code here for pins mapping : http://www.geeetech.com/forum/viewtopic ... 20&t=19846

Regards.