Hey Guys,
I have a Mendel with ATMega1280 and pololu-electronics (I soldered the boards myself on stripboard - the firmware is an older marlin release that is configured to work like with RAMPS 1.1 but i changed all pin assignments to fit my electronics).
Everything worked fine for years but now I would like to attach a SDRAMPS and since the SDRAMPS-related Pins are already in use for my axis, I tried to use different pins for SDRAMPS.
But even though I changed the pin assignment, my X-Axis blocks as soon as I activate sdsupport… any suggestions?
Following my Pin-Assignment (Works flawlessly without SDSUPPORT turned on…):
#define X_STEP_PIN 51
#define X_DIR_PIN 53
#define X_ENABLE_PIN 49
#define X_MIN_PIN 47
#define X_MAX_PIN -1 //2
#define Y_STEP_PIN 43
#define Y_DIR_PIN 45
#define Y_ENABLE_PIN 41
#define Y_MIN_PIN 39
#define Y_MAX_PIN -1 //17
#define Z_STEP_PIN 42
#define Z_DIR_PIN 44
#define Z_ENABLE_PIN 40
#define Z_MIN_PIN 38
#define Z_MAX_PIN -1 //19
#define E0_STEP_PIN 48
#define E0_DIR_PIN 50
#define E0_ENABLE_PIN 46
this is what i changed in the file «fastio.h»
#if defined (__AVR_ATmega1280__) || defined (__AVR_ATmega2560__)
// UART
#define RXD DIO0
#define TXD DIO1
// SPI
#define SCK DIO32 //was 52
#define MISO DIO34 //was 50
#define MOSI DIO33 //was 51
#define SS DIO31 //was 53
I also changed the assignment of the above mentioned pins for SCK, MISO, MOSI and SS in «pins.h» and in «Sd2PinMap.h» with no result… any ideas?
THANKS for your help!
