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define USES_16BIT_BUS for conditional 16/8BIT

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prenticedavid
2021-08-24 16:24:12 +01:00
committed by GitHub
parent 1d4426e0db
commit a66079e48d
1 changed files with 12 additions and 3 deletions
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15
utility/mcufriend_special.h
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@@ -715,8 +715,7 @@ static __attribute((always_inline)) void write_8(uint8_t val)
#define PIN_OUTPUT(port, pin) (port)->PIO_OER = (1<<(pin))
#elif defined(__SAM3X8E__) && defined(USE_DUE_16BIT_SHIELD) //regular CTE shield on DUE
#warning USE_DUE_16BIT_SHIELD
#define USES_16BIT_BUS
#define USES_16BIT_BUS //COMMENT THIS LINE IF YOU USE 8BIT BUS
// configure macros for the control pins
#define RD_PORT PIOA
#define RD_PIN 15 //D24 Graham
@@ -738,13 +737,23 @@ static __attribute((always_inline)) void write_8(uint8_t val)
#define write_16(x) { PIOC->PIO_CODR = CMASK; \
PIOC->PIO_SODR = (((x)&0x00FF)<<1)|(((x)&0xFF00)<<4); }
#define read_16() (((PIOC->PIO_PDSR & CMASKH)>>4)|((PIOC->PIO_PDSR & CMASKL)>>1) )
#define read_8() (read_16() & 0xFF)
//#define read_8() (read_16() & 0xFF)
#define read_8() ((PIOC->PIO_PDSR & CMASKL)>>1)
#define setWriteDir() { PIOC->PIO_OER = CMASK; PIOC->PIO_PER = CMASK; }
#define setReadDir() { PMC->PMC_PCER0 = (1 << ID_PIOC); PIOC->PIO_ODR = CMASK; }
#if defined(USES_16BIT_BUS)
#warning USE_DUE_16BIT_SHIELD
#define write8(x) { write16(x & 0xFF); }
#define write16(x) { write_16(x); WR_ACTIVE; WR_STROBE; WR_IDLE; WR_IDLE; }
#define READ_16(dst) { RD_STROBE; RD_ACTIVE4; dst = read_16(); RD_IDLE; RD_IDLE; RD_IDLE; }
#define READ_8(dst) { READ_16(dst); dst &= 0xFF; }
#else
#warning USE_DUE_8BIT_SHIELD
#define write8(x) { write_8(x); WR_ACTIVE4; WR_STROBE; WR_IDLE4; }
#define write16(x) { uint8_t h = (x)>>8, l = x; write8(h); write8(l); }
#define READ_8(dst) { RD_STROBE; RD_ACTIVE4; dst = read_8(); RD_IDLE; RD_IDLE; RD_IDLE; }
#define READ_16(dst) { uint8_t hi; READ_8(hi); READ_8(dst); dst |= (hi << 8); }
#endif
// Shield Control macros.
#define PIN_LOW(port, pin) (port)->PIO_CODR = (1<<(pin))