63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
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#include <SPI.h>
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#ifndef Adafruit_SPIDevice_h
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#define Adafruit_SPIDevice_h
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// some modern SPI definitions don't have BitOrder enum
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#if defined(__AVR__) || defined(ESP8266) || defined(TEENSYDUINO)
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typedef enum _BitOrder {
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SPI_BITORDER_MSBFIRST = MSBFIRST,
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SPI_BITORDER_LSBFIRST = LSBFIRST,
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} BitOrder;
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#endif
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// some modern SPI definitions don't have BitOrder enum and have different SPI mode defines
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#if defined(ESP32)
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typedef enum _BitOrder {
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SPI_BITORDER_MSBFIRST = SPI_MSBFIRST,
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SPI_BITORDER_LSBFIRST = SPI_LSBFIRST,
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} BitOrder;
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#endif
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// Some platforms have a BitOrder enum but its named MSBFIRST/LSBFIRST
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#if defined(ARDUINO_ARCH_SAMD) || defined(__SAM3X8E__) || defined(NRF52_SERIES)
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#define SPI_BITORDER_MSBFIRST MSBFIRST
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#define SPI_BITORDER_LSBFIRST LSBFIRST
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#endif
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///< The class which defines how we will talk to this device over SPI
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class Adafruit_SPIDevice {
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public:
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Adafruit_SPIDevice(int8_t cspin,
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uint32_t freq=1000000,
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BitOrder dataOrder=SPI_BITORDER_MSBFIRST,
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uint8_t dataMode=SPI_MODE0,
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SPIClass *theSPI=&SPI);
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Adafruit_SPIDevice(int8_t cspin, int8_t sck, int8_t miso, int8_t mosi,
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uint32_t freq=1000000,
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BitOrder dataOrder=SPI_BITORDER_MSBFIRST,
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uint8_t dataMode=SPI_MODE0);
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bool begin(void);
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bool read(uint8_t *buffer, size_t len, uint8_t sendvalue=0xFF);
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bool write(uint8_t *buffer, size_t len, uint8_t *prefix_buffer=NULL, size_t prefix_len=0);
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bool write_then_read(uint8_t *write_buffer, size_t write_len, uint8_t *read_buffer, size_t read_len, uint8_t sendvalue=0xFF);
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uint8_t transfer(uint8_t send);
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void transfer(uint8_t *buffer, size_t len);
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private:
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SPIClass *_spi;
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SPISettings *_spiSetting;
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uint32_t _freq;
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BitOrder _dataOrder;
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uint8_t _dataMode;
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int8_t _cs, _sck, _mosi, _miso;
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bool _begun;
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};
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#endif // Adafruit_SPIDevice_h
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