+ #include "process_terminal_nop.h"
+#endif
+
+#ifdef HD44780_ENABLE
+ #include "hd44780.h"
+#endif
+
+//Function substitutions to ease GPIO manipulation
+#ifdef __AVR__
+ #define PIN_ADDRESS(p, offset) _SFR_IO8(ADDRESS_BASE + (p >> PORT_SHIFTER) + offset)
+
+ #define pin_t uint8_t
+ #define setPinInput(pin) PIN_ADDRESS(pin, 1) &= ~ _BV(pin & 0xF)
+ #define setPinInputHigh(pin) ({\
+ PIN_ADDRESS(pin, 1) &= ~ _BV(pin & 0xF);\
+ PIN_ADDRESS(pin, 2) |= _BV(pin & 0xF);\
+ })
+ #define setPinInputLow(pin) _Static_assert(0, "AVR Processors cannot impliment an input as pull low")
+ #define setPinOutput(pin) PIN_ADDRESS(pin, 1) |= _BV(pin & 0xF)
+
+ #define writePinHigh(pin) PIN_ADDRESS(pin, 2) |= _BV(pin & 0xF)
+ #define writePinLow(pin) PIN_ADDRESS(pin, 2) &= ~_BV(pin & 0xF)
+ static inline void writePin(pin_t pin, uint8_t level){
+ if (level){
+ PIN_ADDRESS(pin, 2) |= _BV(pin & 0xF);
+ } else {
+ PIN_ADDRESS(pin, 2) &= ~_BV(pin & 0xF);
+ }
+ }
+
+ #define readPin(pin) (PIN_ADDRESS(pin, 0) & _BV(pin & 0xF))
+#elif defined(PROTOCOL_CHIBIOS)
+ #define pin_t ioline_t
+ #define setPinInput(pin) palSetLineMode(pin, PAL_MODE_INPUT)
+ #define setPinInputHigh(pin) palSetLineMode(pin, PAL_MODE_INPUT_PULLUP)
+ #define setPinInputLow(pin) palSetLineMode(pin, PAL_MODE_INPUT_PULLDOWN)
+ #define setPinOutput(pin) palSetLineMode(pin, PAL_MODE_OUTPUT_PUSHPULL)
+
+ #define writePinHigh(pin) palSetLine(pin)
+ #define writePinLow(pin) palClearLine(pin)
+ static inline void writePin(pin_t pin, uint8_t level){
+ if (level){
+ palSetLine(pin);
+ } else {
+ palClearLine(pin);
+ }
+ }
+
+ #define readPin(pin) palReadLine(pin)