RIOT/drivers/at86rf231/at86rf231_spi.c

#include <at86rf231_spi.h>
#include <at86rf231_arch.h>
#include <at86rf231_settings.h>

void at86rf231_reg_write(uint8_t addr, uint8_t value)
{
  // Start the SPI transfer
  at86rf231_spi_select();

  // Send first byte being the command and address
  at86rf231_spi_transfer_byte(AT86RF231_ACCESS_REG | AT86RF231_ACCESS_WRITE | addr);

  // Send value
  at86rf231_spi_transfer_byte(value);

  // End the SPI transfer
  at86rf231_spi_unselect();
}

uint8_t at86rf231_reg_read(uint8_t addr)
{
  uint8_t value;

  // Start the SPI transfer
  at86rf231_spi_select();

  // Send first byte being the command and address
  at86rf231_spi_transfer_byte(AT86RF231_ACCESS_REG | AT86RF231_ACCESS_READ | addr);

  // Send value
  value = at86rf231_spi_transfer_byte(0);

  // End the SPI transfer
  at86rf231_spi_unselect();

  return value;
}

void at86rf231_read_fifo(uint8_t* data, uint8_t length)
{
  // Start the SPI transfer
  at86rf231_spi_select();

  // Send Frame Buffer Write access
  at86rf231_spi_transfer_byte(AT86RF231_ACCESS_FRAMEBUFFER | AT86RF231_ACCESS_READ);

  at86rf231_spi_transfer(0, data, length);

  // End the SPI transfer
  at86rf231_spi_unselect();
}

void at86rf231_write_fifo(const uint8_t* data, uint8_t length)
{
  // Start the SPI transfer
  at86rf231_spi_select();

  // Send Frame Buffer Write access
  at86rf231_spi_transfer_byte(AT86RF231_ACCESS_FRAMEBUFFER | AT86RF231_ACCESS_WRITE);

  at86rf231_spi_transfer(data, 0, length);

  // End the SPI transfer
  at86rf231_spi_unselect();
}