int spi_transfer_byte(spi_t dev, char out, char *in)
{
if (in != NULL) {
(*in) = USART_SpiTransfer(spi_config[dev].dev, out);
}
else {
USART_SpiTransfer(spi_config[dev].dev, out);
}
return 0;
}
/**************************************************************************//**
* @brief
* Do one SPI transfer.
*
* @param data
* Byte to transmit.
*
* @return
* Byte received.
*****************************************************************************/
uint8_t MICROSD_XferSpi(uint8_t data)
{
if ( timeOut )
timeOut--;
return USART_SpiTransfer(MICROSD_USART, data);
}
/*==============================================================================
hal_spiRead()
=============================================================================*/
uint8_t hal_spiRead(uint8_t * p_reg, uint16_t i_length)
{
//SPIDRV_MReceiveB( s_hal_spi.pHndl, p_reg, i_length );
for( int i = 0; i < i_length; i++ )
p_reg[i] = USART_SpiTransfer( s_hal_spi.pHndl->initData.port, 0 );
return *p_reg;
} /* hal_spiRead() */
// *****************************************************************************
// @fn spi_byte
// @brief Write a byte through SPI
// @param unsigned char data Byte to send
// @return unsigned char Recieved byte
// *****************************************************************************
unsigned char spi_byte(unsigned char data)
{
#ifdef SPI_USE_DMA
unsigned char receive = NULL;
spiDmaTransfer( (uint8_t*) &data, (uint8_t*) &receive, 1 );
sleepUntilDmaDone();
return receive;
#else
return USART_SpiTransfer( SPI_CHANNEL, data );
#endif
}
byte SPIClass::transfer(byte _pin, uint8_t _data, SPITransferMode _mode) {
//SERIAL.print(":w:");
//DEBUGPRINTLN(_data);
/*while (!(spi->STATUS & USART_STATUS_TXBL));
spi->TXDATA = (uint32_t)_data;
while (!((spi->STATUS & USART_STATUS_RXDATAV) == USART_STATUS_RXDATAV));
uint32_t d = spi->RXDATA; */
uint8_t out =0;
out = USART_SpiTransfer(spi, _data);
/*SERIAL.print("data:");
DEBUGPRINTLN(_data);*/
/*uint8_t out = 0;
for(int i = 0; i < 8; i++)
{
digitalWrite(PIN_SPI_MOSI, ((_data >> (7-i)) & 0x01));
//delayMicroseconds(1);
digitalWrite(PIN_SPI_SCK, HIGH);
//delayMicroseconds(1);
digitalWrite(PIN_SPI_SCK, LOW);
out = (digitalRead(PIN_SPI_MISO) << (7-i)) | out;
}*/
/*SERIAL.print("read:");
DEBUGPRINTLN(out);*/
return out & 0xFF;
}
/*==============================================================================
hal_spiWrite()
=============================================================================*/
void hal_spiWrite(uint8_t * c_value, uint16_t i_length)
{
//SPIDRV_MTransmitB( s_hal_spi.pHndl, c_value, i_length );
for( int i = 0; i < i_length; i++ )
USART_SpiTransfer( s_hal_spi.pHndl->initData.port, c_value[i] );
} /* hal_spiWrite() */
/*---------------------------------------------------------------------------*/
uint8_t spi2_readwrite(uint8_t data)
{
return USART_SpiTransfer(USART2, data);
}
