115 lines
4.5 KiB
C
115 lines
4.5 KiB
C
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/*
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* Control Pins
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* */
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#ifdef USE_FAST_PINIO
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#define SPI_DC_HIGH() *dcport |= dcpinmask
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#define SPI_DC_LOW() *dcport &= ~dcpinmask
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#define SPI_CS_HIGH() *csport |= cspinmask
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#define SPI_CS_LOW() *csport &= ~cspinmask
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#else
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#define SPI_DC_HIGH() digitalWrite(_dc, HIGH)
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#define SPI_DC_LOW() digitalWrite(_dc, LOW)
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#define SPI_CS_HIGH() digitalWrite(_cs, HIGH)
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#define SPI_CS_LOW() digitalWrite(_cs, LOW)
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#endif
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/*
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* Software SPI Macros
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* */
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#ifdef USE_FAST_PINIO
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#define SSPI_MOSI_HIGH() *mosiport |= mosipinmask
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#define SSPI_MOSI_LOW() *mosiport &= ~mosipinmask
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#define SSPI_SCK_HIGH() *clkport |= clkpinmask
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#define SSPI_SCK_LOW() *clkport &= ~clkpinmask
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#define SSPI_MISO_READ() ((*misoport & misopinmask) != 0)
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#else
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#define SSPI_MOSI_HIGH() digitalWrite(_mosi, HIGH)
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#define SSPI_MOSI_LOW() digitalWrite(_mosi, LOW)
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#define SSPI_SCK_HIGH() digitalWrite(_sclk, HIGH)
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#define SSPI_SCK_LOW() digitalWrite(_sclk, LOW)
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#define SSPI_MISO_READ() digitalRead(_miso)
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#endif
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#define SSPI_BEGIN_TRANSACTION()
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#define SSPI_END_TRANSACTION()
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#define SSPI_WRITE(v) spiWrite(v)
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#define SSPI_WRITE16(s) SSPI_WRITE((s) >> 8); SSPI_WRITE(s)
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#define SSPI_WRITE32(l) SSPI_WRITE((l) >> 24); SSPI_WRITE((l) >> 16); SSPI_WRITE((l) >> 8); SSPI_WRITE(l)
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#define SSPI_WRITE_PIXELS(c,l) for(uint32_t i=0; i<(l); i+=2){ SSPI_WRITE(((uint8_t*)(c))[i+1]); SSPI_WRITE(((uint8_t*)(c))[i]); }
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/*
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* Hardware SPI Macros
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* */
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#define SPI_OBJECT SPI
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#if defined (__AVR__) || defined(TEENSYDUINO) || defined(ARDUINO_ARCH_STM32F1)
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#define HSPI_SET_CLOCK() SPI_OBJECT.setClockDivider(SPI_CLOCK_DIV2);
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#elif defined (__arm__)
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#define HSPI_SET_CLOCK() SPI_OBJECT.setClockDivider(11);
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#elif defined(ESP8266) || defined(ESP32)
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#define HSPI_SET_CLOCK() SPI_OBJECT.setFrequency(_freq);
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#elif defined(RASPI)
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#define HSPI_SET_CLOCK() SPI_OBJECT.setClock(_freq);
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#elif defined(ARDUINO_ARCH_STM32F1)
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#define HSPI_SET_CLOCK() SPI_OBJECT.setClock(_freq);
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#else
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#define HSPI_SET_CLOCK()
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#endif
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#ifdef SPI_HAS_TRANSACTION
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#define HSPI_BEGIN_TRANSACTION() SPI_OBJECT.beginTransaction(SPISettings(_freq, MSBFIRST, SPI_MODE0))
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#define HSPI_END_TRANSACTION() SPI_OBJECT.endTransaction()
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#else
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#define HSPI_BEGIN_TRANSACTION() HSPI_SET_CLOCK(); SPI_OBJECT.setBitOrder(MSBFIRST); SPI_OBJECT.setDataMode(SPI_MODE0)
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#define HSPI_END_TRANSACTION()
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#endif
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#ifdef ESP32
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#define SPI_HAS_WRITE_PIXELS
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#endif
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#if defined(ESP8266) || defined(ESP32)
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// Optimized SPI (ESP8266 and ESP32)
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#define HSPI_READ() SPI_OBJECT.transfer(0)
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#define HSPI_WRITE(b) SPI_OBJECT.write(b)
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#define HSPI_WRITE16(s) SPI_OBJECT.write16(s)
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#define HSPI_WRITE32(l) SPI_OBJECT.write32(l)
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#ifdef SPI_HAS_WRITE_PIXELS
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#define SPI_MAX_PIXELS_AT_ONCE 32
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#define HSPI_WRITE_PIXELS(c,l) SPI_OBJECT.writePixels(c,l)
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#else
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#define HSPI_WRITE_PIXELS(c,l) for(uint32_t i=0; i<((l)/2); i++){ SPI_WRITE16(((uint16_t*)(c))[i]); }
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#endif
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#else
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// Standard Byte-by-Byte SPI
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#if defined (__AVR__) || defined(TEENSYDUINO)
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static inline uint8_t _avr_spi_read(void) __attribute__((always_inline));
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static inline uint8_t _avr_spi_read(void) {
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uint8_t r = 0;
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SPDR = r;
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while(!(SPSR & _BV(SPIF)));
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r = SPDR;
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return r;
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}
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#define HSPI_WRITE(b) {SPDR = (b); while(!(SPSR & _BV(SPIF)));}
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#define HSPI_READ() _avr_spi_read()
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#else
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#define HSPI_WRITE(b) SPI_OBJECT.transfer((uint8_t)(b))
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#define HSPI_READ() HSPI_WRITE(0)
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#endif
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#define HSPI_WRITE16(s) HSPI_WRITE((s) >> 8); HSPI_WRITE(s)
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#define HSPI_WRITE32(l) HSPI_WRITE((l) >> 24); HSPI_WRITE((l) >> 16); HSPI_WRITE((l) >> 8); HSPI_WRITE(l)
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#define HSPI_WRITE_PIXELS(c,l) for(uint32_t i=0; i<(l); i+=2){ HSPI_WRITE(((uint8_t*)(c))[i+1]); HSPI_WRITE(((uint8_t*)(c))[i]); }
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#endif
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#define SPI_BEGIN() if(_sclk < 0){SPI_OBJECT.begin();}
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#define SPI_BEGIN_TRANSACTION() if(_sclk < 0){HSPI_BEGIN_TRANSACTION();}
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#define SPI_END_TRANSACTION() if(_sclk < 0){HSPI_END_TRANSACTION();}
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#define SPI_WRITE16(s) if(_sclk < 0){HSPI_WRITE16(s);}else{SSPI_WRITE16(s);}
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#define SPI_WRITE32(l) if(_sclk < 0){HSPI_WRITE32(l);}else{SSPI_WRITE32(l);}
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#define SPI_WRITE_PIXELS(c,l) if(_sclk < 0){HSPI_WRITE_PIXELS(c,l);}else{SSPI_WRITE_PIXELS(c,l);}
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