st-anything/lib/Adafruit_BusIO/Adafruit_SPIDevice.h

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2023-03-11 14:11:03 +00:00
#include <SPI.h>
#ifndef Adafruit_SPIDevice_h
#define Adafruit_SPIDevice_h
// some modern SPI definitions don't have BitOrder enum
#if defined(__AVR__) || defined(ESP8266) || defined(TEENSYDUINO)
typedef enum _BitOrder {
SPI_BITORDER_MSBFIRST = MSBFIRST,
SPI_BITORDER_LSBFIRST = LSBFIRST,
} BitOrder;
#endif
// some modern SPI definitions don't have BitOrder enum and have different SPI mode defines
#if defined(ESP32)
typedef enum _BitOrder {
SPI_BITORDER_MSBFIRST = SPI_MSBFIRST,
SPI_BITORDER_LSBFIRST = SPI_LSBFIRST,
} BitOrder;
#endif
// Some platforms have a BitOrder enum but its named MSBFIRST/LSBFIRST
#if defined(ARDUINO_ARCH_SAMD) || defined(__SAM3X8E__) || defined(NRF52_SERIES)
#define SPI_BITORDER_MSBFIRST MSBFIRST
#define SPI_BITORDER_LSBFIRST LSBFIRST
#endif
///< The class which defines how we will talk to this device over SPI
class Adafruit_SPIDevice {
public:
Adafruit_SPIDevice(int8_t cspin,
uint32_t freq=1000000,
BitOrder dataOrder=SPI_BITORDER_MSBFIRST,
uint8_t dataMode=SPI_MODE0,
SPIClass *theSPI=&SPI);
Adafruit_SPIDevice(int8_t cspin, int8_t sck, int8_t miso, int8_t mosi,
uint32_t freq=1000000,
BitOrder dataOrder=SPI_BITORDER_MSBFIRST,
uint8_t dataMode=SPI_MODE0);
bool begin(void);
bool read(uint8_t *buffer, size_t len, uint8_t sendvalue=0xFF);
bool write(uint8_t *buffer, size_t len, uint8_t *prefix_buffer=NULL, size_t prefix_len=0);
bool write_then_read(uint8_t *write_buffer, size_t write_len, uint8_t *read_buffer, size_t read_len, uint8_t sendvalue=0xFF);
uint8_t transfer(uint8_t send);
void transfer(uint8_t *buffer, size_t len);
private:
SPIClass *_spi;
SPISettings *_spiSetting;
uint32_t _freq;
BitOrder _dataOrder;
uint8_t _dataMode;
int8_t _cs, _sck, _mosi, _miso;
bool _begun;
};
#endif // Adafruit_SPIDevice_h