Switch SD2cadrLib to fastio
Replace all fastDigitalRead/Write() with READ/WRITE() Define SCK_PIN, MISO_PIN, MOSI_PIN in pins.h if not already defined in the pins_*.h files. Remove these conditional pin definitions from the pin-files. They are now always defined. Define separate sets of SPI-pins for AT90USB with and without Teensy support in fastio.h. Likely this was the main reason for all that confusion about the AT90USB-SPI pins.
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@@ -109,13 +109,6 @@
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#define LED_PIN 6
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#define PS_ON_PIN 27
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#if DISABLED(SDSUPPORT)
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// these pins are defined in the SD library if building with SD support
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#define SCK_PIN 21 // 9
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#define MISO_PIN 23 // 11
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#define MOSI_PIN 22 // 10
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#endif
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#if ENABLED(ULTIPANEL)
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#define LCD_PINS_RS 8
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#define LCD_PINS_ENABLE 9
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