//****************************************************************************
// Sets the rx address of a given RX pipe. See nRF24L01+ for more details
//*****************************************************************************
static __INLINE int32_t wireless_set_rx_addr(
uint8_t *rx_addr,
uint8_t pipe
)
{
uint8_t dataIn[6];
uint8_t dataOut[6];
uint8_t wireless_reg = 0;
switch(pipe)
{
case 0: { wireless_reg = NRF24L01_RX_ADDR_P0_R; break; }
case 1: { wireless_reg = NRF24L01_RX_ADDR_P1_R; break; }
case 2: { wireless_reg = NRF24L01_RX_ADDR_P2_R; break; }
case 3: { wireless_reg = NRF24L01_RX_ADDR_P3_R; break; }
case 4: { wireless_reg = NRF24L01_RX_ADDR_P4_R; break; }
case 5: { wireless_reg = NRF24L01_RX_ADDR_P5_R; break; }
default: {return -1;}
}
dataIn[0] = wireless_reg | NRF24L01_CMD_W_REGISTER ;
dataIn[1] = *(rx_addr +0 );
dataIn[2] = *(rx_addr +1 );
dataIn[3] = *(rx_addr +2 );
dataIn[4] = *(rx_addr +3 );
dataIn[5] = *(rx_addr +4 );
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base,dataIn, 6, dataOut);
wireless_CSN_high();
return 0;
}
//*****************************************************************************
// On initialization, we remove any messages that are sitting in the RX Fifo
//*****************************************************************************
static __INLINE void wireless_flush_rx_fifo( void )
{
uint8_t dataIn[1];
uint8_t dataOut[1];
dataIn[0] = NRF24L01_CMD_FLUSH_RX;
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base,dataIn, 1, dataOut);
wireless_CSN_high();
}
//*****************************************************************************
// ADD CODE
// This function reads a single byte of data from the register at the 5-bit
// address specificed by the lower 5 bits of paramter reg.
//
// The value at that register is returned to the user as a uint8_t.
//
// Page 51 of the data sheet lists the supported commnads for the nRF24L01+.
// The first two entries entries describe how to read/write a single byte of
// data to a register.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE uint8_t wireless_reg_read(uint8_t reg)
{
uint8_t t[2];
uint8_t com[2];
com[0] = reg & 0x1F;
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base, &com[0], 2, t);
wireless_CSN_high();
return t[1];
}
//*****************************************************************************
// Returns the contents of the nRF24L01+ status register
//*****************************************************************************
static __INLINE uint8_t wireless_get_status( void )
{
uint8_t dataIn[1];
uint8_t dataOut[1];
dataIn[0] = NRF24L01_CMD_NOP;
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base,dataIn, 1, dataOut);
wireless_CSN_high();
return dataOut[0];
}
//*****************************************************************************
// ADD CODE
// This function writes a single byte of data from the register at the 5-bit
// address specificed by the lower 5 bits of paramter reg.
//
// Page 51 of the data sheet lists the supported commnads for the nRF24L01+.
// The first two entries entries describe how to read/write a single byte of
// data to a register.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE void wireless_reg_write(uint8_t reg, uint8_t data)
{
uint8_t t[2];
uint8_t com[2];
reg = (reg & 0x1F) | 0x20;
com[0] = reg;
com[1] = data;
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base, &com[0], 2, t);
wireless_CSN_high();
}
//*****************************************************************************
// ADD CODE
// This function writes 4 bytes of data to the nRF24L01+ Tx FIFO using the
// W_TX_PAYLOAD command found on page 51 of the nRF24L01+ datasheet.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE void wireless_tx_data_payload( uint32_t data)
{
uint8_t t[5];
uint8_t com[5];
com[0] = NRF24L01_CMD_W_TX_PAYLOAD;
com[1] = data >> 24;
com[2] = data >> 16;
com[3] = data >> 8;
com[4] = data;
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base, &com[0], 5, t);
wireless_CSN_high();
}
//*****************************************************************************
// This function writes a single byte of data from the register at the 5-bit
// address specificed by the lower 5 bits of paramter reg.
//
// Page 51 of the data sheet lists the supported commnads for the nRF24L01+.
// The first two entries entries describe how to read/write a single byte of
// data to a register.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE void wireless_reg_write(uint8_t reg, uint8_t data)
{
uint8_t din[2];
uint8_t dout[2];
din[0] = ((reg & 0x1F) | 0x20);
din[1] = data;
wireless_CSN_low();
spiTx(SSI1_BASE, din, 2, dout);
wireless_CSN_high();
}
//*****************************************************************************
// ADD CODE
// This function reads 4 bytes of data from the nRF24L01+ Tx FIFO using the
// R_RX_PAYLOAD command found on page 51 of the nRF24L01+ datasheet.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE void wireless_rx_data_payload( uint32_t *data)
{
uint8_t command = NRF24L01_CMD_R_RX_PAYLOAD;
uint8_t sendData[5];
uint8_t returnData[5];
sendData[0] = command;
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base,sendData,5,returnData);
wireless_CSN_high();
*data = 0;
*data |= returnData[4];
*data |= (returnData[3] << 8);
*data |= (returnData[2] << 16);
*data |= (returnData[1] << 24);
}
//*****************************************************************************
// ADD CODE
// This function writes 5 bytes of data to the TX_ADDR register found on page
// 60 of the nRF24L01+ data sheet.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE void wireless_set_tx_addr(uint8_t *tx_addr)
{
uint8_t t[6];
uint8_t com[6];
com[0] = 0x30;
com[1] = tx_addr[0];
com[2]= tx_addr[1];
com[3] = tx_addr[2];
com[4] = tx_addr[3];
com[5] = tx_addr[4];
wireless_CSN_low();
spiTx(wirelessPinConfig.wireless_spi_base, &com[0], 6, t);
wireless_CSN_high();
}
//*****************************************************************************
// This function reads a single byte of data from the register at the 5-bit
// address specificed by the lower 5 bits of paramter reg.
//
// The value at that register is returned to the user as a uint8_t.
//
// Page 51 of the data sheet lists the supported commnads for the nRF24L01+.
// The first two entries entries describe how to read/write a single byte of
// data to a register.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE uint8_t wireless_reg_read(uint8_t reg)
{
uint8_t din[2];
uint8_t dout[2];
din[0] = (reg & 0x1F);
din[1] = 0xFF;
wireless_CSN_low();
spiTx(SSI1_BASE, din, 2, dout);
wireless_CSN_high();
return dout[1];
}
//*****************************************************************************
// This function writes 4 bytes of data to the nRF24L01+ Tx FIFO using the
// W_TX_PAYLOAD command found on page 51 of the nRF24L01+ datasheet.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE void wireless_tx_data_payload( uint32_t data)
{
uint8_t din[5];
uint8_t dout[5];
din[0] = 0xA0;
din[1] = data & 0x000000FF;
din[2] = (data & 0x0000FF00) >> 8;
din[3] = (data & 0x00FF0000) >> 16;
din[4] = (data & 0xFF000000) >> 24;
wireless_CSN_low();
spiTx(SSI1_BASE, din, 5, dout);
wireless_CSN_high();
}
//*****************************************************************************
// This function writes 5 bytes of data to the TX_ADDR register found on page
// 60 of the nRF24L01+ data sheet.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE uint32_t wireless_set_tx_addr(uint8_t *tx_addr)
{
uint8_t din[6];
uint8_t dout[6];
din[0] = ((0x10 & 0x1F) | 0x20);
din[1] = tx_addr[0];
din[2] = tx_addr[1];
din[3] = tx_addr[2];
din[4] = tx_addr[3];
din[5] = tx_addr[4];
wireless_CSN_low();
spiTx(SSI1_BASE, din, 6, dout);
wireless_CSN_high();
}
//*****************************************************************************
// This function reads 4 bytes of data from the nRF24L01+ Tx FIFO using the
// R_RX_PAYLOAD command found on page 51 of the nRF24L01+ datasheet.
//
// Use spiTx() to send the data via the SPI interface. This function can be
// found in spi.c. You will also need to use wireless_CSN_low() and
// wireless_CSN_high() to manually set the SPI chip select.
//*****************************************************************************
static __INLINE void wireless_rx_data_payload( uint32_t *data)
{
uint8_t din[5];
uint8_t dout[5];
din[0] = 0x61;
din[1] = 0xFF;
din[2] = 0xFF;
din[3] = 0xFF;
din[4] = 0xFF;
wireless_CSN_low();
spiTx(SSI1_BASE, din, 5, dout);
wireless_CSN_high();
*data = 0;
*data |= dout[1];
*data |= dout[2] << 8;
*data |= dout[3] << 16;
*data |= dout[4] << 24;
}
