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