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intuitive macros

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prenticedavid
2017-02-01 21:10:39 +00:00
parent 3fd2c1289b
commit 6e6cc5ad17
1 changed files with 6 additions and 6 deletions
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12
utility/mcufriend_shield.h
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@@ -20,12 +20,12 @@
#define RESET_PORT PORTC #define RESET_PORT PORTC
#define RESET_PIN 4 #define RESET_PIN 4
#define DMASK 0x03 #define BMASK 0x03 //more intuitive style for mixed Ports
#define NMASK ~DMASK #define DMASK 0xFC //does exactly the same as previous
#define write_8(x) { PORTB = (PORTB & NMASK) | ((x) & DMASK); PORTD = (PORTD & DMASK) | ((x) & NMASK); } #define write_8(x) { PORTB = (PORTB & ~BMASK) | ((x) & BMASK); PORTD = (PORTD & ~DMASK) | ((x) & DMASK); }
#define read_8() ( (PINB & DMASK) | (PIND & NMASK) ) #define read_8() ( (PINB & BMASK) | (PIND & DMASK) )
#define setWriteDir() { DDRB = (DDRB & NMASK) | DMASK; DDRD = (DDRD & DMASK) | NMASK; } #define setWriteDir() { DDRB |= BMASK; DDRD |= DMASK; }
#define setReadDir() { DDRB = (DDRB & NMASK) & NMASK; DDRD = (DDRD & DMASK) & DMASK; } #define setReadDir() { DDRB &= ~BMASK; DDRD &= ~DMASK; }
#define write8(x) { write_8(x); WR_STROBE; } #define write8(x) { write_8(x); WR_STROBE; }
#define write16(x) { uint8_t h = (x)>>8, l = x; write8(h); write8(l); } #define write16(x) { uint8_t h = (x)>>8, l = x; write8(h); write8(l); }
#define READ_8(dst) { RD_STROBE; dst = read_8(); RD_IDLE; } #define READ_8(dst) { RD_STROBE; dst = read_8(); RD_IDLE; }