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- // Enable or disable the use of a display shield designed for use on
- // an Arduino Uno (or compatible) on an Arduino Mega
- //
- // ** Currently only available for 8bit display shields **
- //
- // Uncomment the following line to enable this feature
- //#define USE_UNO_SHIELD_ON_MEGA 1
- //********************************************************************
-
- // *** Hardwarespecific defines ***
- #define cbi(reg, bitmask) *reg &= ~bitmask
- #define sbi(reg, bitmask) *reg |= bitmask
- #define pulse_high(reg, bitmask) sbi(reg, bitmask); cbi(reg, bitmask);
- #define pulse_low(reg, bitmask) cbi(reg, bitmask); sbi(reg, bitmask);
-
- #define cport(port, data) port &= data
- #define sport(port, data) port |= data
-
- #define swap(type, i, j) {type t = i; i = j; j = t;}
-
- #define fontbyte(x) pgm_read_byte(&cfont.font[x])
-
- #define regtype volatile uint8_t
- #define regsize uint8_t
- #define bitmapdatatype unsigned int*
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