69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
#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(ARDUINO_ARCH_MEGAAVR)) || \
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defined(ESP8266) || defined(TEENSYDUINO) || \
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defined(ARDUINO_ARCH_SPRESENSE) || defined(ARDUINO_attinyxy7) || \
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defined(ARDUINO_attinyxy6) || defined(ARDUINO_attinyxy4) || \
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defined(ARDUINO_attinyxy2)
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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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#elif defined(ESP32)
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// some modern SPI definitions don't have BitOrder enum and have different SPI
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// mode defines
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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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#else
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// Some platforms have a BitOrder enum but its named MSBFIRST/LSBFIRST
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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, uint32_t freq = 1000000,
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BitOrder dataOrder = SPI_BITORDER_MSBFIRST,
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uint8_t dataMode = SPI_MODE0, 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,
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size_t prefix_len = 0);
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bool write_then_read(uint8_t *write_buffer, size_t write_len,
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uint8_t *read_buffer, size_t read_len,
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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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void beginTransaction(void);
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void endTransaction(void);
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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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