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Change SDSS for the Printrboard to the correct pin #10675

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Change SDSS for the Printrboard to the correct pin #10675

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8 changes: 2 additions & 6 deletions Marlin/pins_PRINTRBOARD.h
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Expand Up @@ -74,11 +74,7 @@
// Limit Switches
//
#define X_STOP_PIN 47 // E3
#if ENABLED(SDSUPPORT)
#define Y_STOP_PIN 37 // E5 - Move Ystop to Estop socket
#else
#define Y_STOP_PIN 20 // B0 SS - Ystop in Ystop socket
#endif
#define Y_STOP_PIN 20 // B0 SS
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@thinkyhead thinkyhead May 10, 2018

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Is this pin marked as "SS", as the comment says?

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@Simon-Swenson-8351 Simon-Swenson-8351 May 10, 2018

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B0 is the default SS pin for the Teensy++ 2.0:

image

I think that was the source of the original confusion. It's just that the Printrboard doesn't use the default SS pin for the SD card, it uses B6.

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@thinkyhead thinkyhead May 10, 2018 •
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Oh yes, I have that diagram! Where the heck is PE2-PE3?

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@Simon-Swenson-8351 Simon-Swenson-8351 May 10, 2018

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Hmm, that's a good question. I think that PE2 and PE3 are the AVR register names, with corresponding pins on the IC, but those pins were probably just not given headers on the Teensy board. The Printrboard uses the same IC, hence it uses the same Arduino pin numbers as the Teensy (so I thought the diagram was useful), but since it's a standalone board, it can make use of all the registers it needs.

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@thinkyhead thinkyhead May 10, 2018

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Ah, makes sense. Of course, Printrboard is not Teensy, just "Teensy-like."

#define Z_STOP_PIN 36 // E4

//
Expand Down Expand Up @@ -120,7 +116,7 @@
//
// Misc. Functions
//
#define SDSS 20 // B0 SS
#define SDSS 26 // B6
#define FILWIDTH_PIN 2 // Analog Input

//
Expand Down