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support macros for Uno shield on Teensy 3.x

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prenticedavid
2016-08-26 18:09:25 +01:00
parent 297597a81f
commit df48d083f7
1 changed files with 51 additions and 0 deletions
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51
mcufriend_shield.h
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@@ -232,6 +232,57 @@ void write_8(uint8_t x)
#define PIN_HIGH(p, b) (p) |= (1<<(b))
#define PIN_OUTPUT(p, b) *(&p-1) |= (1<<(b))
#elif defined(__MK20DX128__) || defined(__MK20DX256__) // regular UNO shield on a Teensy 3.x
#warning regular UNO shield on a Teensy 3.x
#define RD_PORT GPIOD
#define RD_PIN 1
#define WR_PORT GPIOC
#define WR_PIN 0
#define CD_PORT GPIOB
#define CD_PIN 0
#define CS_PORT GPIOB
#define CS_PIN 1
#define RESET_PORT GPIOB
#define RESET_PIN 3
// configure macros for the data pins
#define AMASK ((1<<12)|(1<<13))
#define CMASK ((1<<3))
#define DMASK ((1<<0)|(1<<2)|(1<<3)|(1<<4)|(1<<7))
#define write_8(d) { \
GPIOA_PCOR = AMASK; GPIOC_PCOR = CMASK; GPIOD_PCOR = DMASK; \
GPIOA_PSOR = (((d) & (1<<3)) << 9) \
| (((d) & (1<<4)) << 9); \
GPIOC_PSOR = (((d) & (1<<1)) << 2); \
GPIOD_PSOR = (((d) & (1<<0)) << 3) \
| (((d) & (1<<2)) >> 2) \
| (((d) & (1<<5)) << 2) \
| (((d) & (1<<6)) >> 2) \
| (((d) & (1<<7)) >> 5); \
}
#define read_8() ( (((GPIOD_PDIR & (1<<3)) >> 3) \
| ((GPIOC_PDIR & (1<<3)) >> 2) \
| ((GPIOD_PDIR & (1<<0)) << 2) \
| ((GPIOA_PDIR & (1<<12)) >> 9) \
| ((GPIOA_PDIR & (1<<13)) >> 9) \
| ((GPIOD_PDIR & (1<<7)) >> 2) \
| ((GPIOD_PDIR & (1<<4)) << 2) \
| ((GPIOD_PDIR & (1<<2)) << 5)))
#define setWriteDir() {GPIOA_PDDR |= AMASK;GPIOC_PDDR |= CMASK;GPIOD_PDDR |= DMASK; }
#define setReadDir() {GPIOA_PDDR &= ~AMASK;GPIOC_PDDR &= ~CMASK;GPIOD_PDDR &= ~DMASK; }
#define write8(x) { write_8(x); WR_STROBE; }
#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_16(dst) { uint8_t hi; READ_8(hi); READ_8(dst); dst |= (hi << 8); }
#define PASTE(x, y) x ## y
#define PIN_LOW(port, pin) PASTE(port, _PCOR) = (1<<(pin))
#define PIN_HIGH(port, pin) PASTE(port, _PSOR) = (1<<(pin))
#define PIN_OUTPUT(port, pin) PASTE(port, _PDDR) |= (1<<(pin))
#else
#error MCU unsupported
#endif // regular UNO shields on Arduino boards