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9f752b9230
The previous included version (1.0.10) was failing to read more than 32 bytes of data from I2C devices (tested on AMG8833 which typically reads 128 bytes -whose support is in progress-). The problem was fixed in version 1.9.0. Currently, this library is required and used just by the Adafruit_VEML7700 library. The VEML7700 sensor has been tested and proved to correctly work. Signed-off-by: Roberto Bonacina <roby.bonacina@tutanota.com>
110 lines
3.7 KiB
C++
110 lines
3.7 KiB
C++
#ifndef Adafruit_SPIDevice_h
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#define Adafruit_SPIDevice_h
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#include <Arduino.h>
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#if !defined(SPI_INTERFACES_COUNT) || \
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(defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
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#include <SPI.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) || defined(SPARK) || \
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defined(ARDUINO_ARCH_SPRESENSE) || defined(MEGATINYCORE) || \
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defined(DXCORE) || defined(ARDUINO_AVR_ATmega4809) || \
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defined(ARDUINO_AVR_ATmega4808) || defined(ARDUINO_AVR_ATmega3209) || \
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defined(ARDUINO_AVR_ATmega3208) || defined(ARDUINO_AVR_ATmega1609) || \
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defined(ARDUINO_AVR_ATmega1608) || defined(ARDUINO_AVR_ATmega809) || \
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defined(ARDUINO_AVR_ATmega808) || defined(ARDUINO_ARCH_ARC32)
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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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} BusIOBitOrder;
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#elif defined(ESP32) || defined(__ASR6501__) || defined(__ASR6502__)
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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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} BusIOBitOrder;
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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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typedef BitOrder BusIOBitOrder;
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#endif
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#if defined(__AVR__) || defined(TEENSYDUINO)
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typedef volatile uint8_t BusIO_PortReg;
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typedef uint8_t BusIO_PortMask;
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#define BUSIO_USE_FAST_PINIO
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#elif defined(ESP8266) || defined(ESP32) || defined(__SAM3X8E__) || \
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defined(ARDUINO_ARCH_SAMD)
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typedef volatile uint32_t BusIO_PortReg;
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typedef uint32_t BusIO_PortMask;
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#define BUSIO_USE_FAST_PINIO
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#elif (defined(__arm__) || defined(ARDUINO_FEATHER52)) && \
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!defined(ARDUINO_ARCH_MBED) && !defined(ARDUINO_ARCH_RP2040)
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typedef volatile uint32_t BusIO_PortReg;
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typedef uint32_t BusIO_PortMask;
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#if !defined(__ASR6501__) && !defined(__ASR6502__)
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#define BUSIO_USE_FAST_PINIO
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#endif
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#else
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#undef BUSIO_USE_FAST_PINIO
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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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BusIOBitOrder 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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BusIOBitOrder dataOrder = SPI_BITORDER_MSBFIRST,
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uint8_t dataMode = SPI_MODE0);
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~Adafruit_SPIDevice();
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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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bool write_and_read(uint8_t *buffer, size_t len);
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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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BusIOBitOrder _dataOrder;
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uint8_t _dataMode;
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void setChipSelect(int value);
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int8_t _cs, _sck, _mosi, _miso;
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#ifdef BUSIO_USE_FAST_PINIO
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BusIO_PortReg *mosiPort, *clkPort, *misoPort, *csPort;
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BusIO_PortMask mosiPinMask, misoPinMask, clkPinMask, csPinMask;
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#endif
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bool _begun;
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};
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#endif // has SPI defined
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#endif // Adafruit_SPIDevice_h
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