/*******************************************************************************
* Reads an array of bytes from the given start position in the MiRF registers *
******************************************************************************/
void mirf_read_register(uint8_t reg, uint8_t * value, uint8_t len)
{
mirf_CSN_lo;
spi_fast_shift(R_REGISTER | (REGISTER_MASK & reg));
spi_transfer_sync(value,value,len);
mirf_CSN_hi;
}
void NRF24L01_LOW_read_register(uint8_t regaddr, uint8_t* data, uint8_t len)
{
NRF24L01_CSN_LOW;
spi_fast_shift(NRF24L01_CMD_R_REGISTER | regaddr);
spi_transfer_sync(data, data, len);
NRF24L01_CSN_HIGH;
}
/*******************************************************************************
* Reads mirf_PAYLOAD bytes into data array *
******************************************************************************/
extern void mirf_get_data(uint8_t * data)
{
mirf_CSN_lo; // Pull down chip select
spi_fast_shift(R_RX_PAYLOAD); // Send cmd to read rx payload
spi_transfer_sync(data,data,mirf_PAYLOAD); // Read payload
mirf_CSN_hi; // Pull up chip select
mirf_config_register(STATUS,(1<<RX_DR)); // Reset status register
}
void mirf_read_register(uint8_t reg, uint8_t * value, uint8_t len)
// Reads an array of bytes from the given start position in the MiRF registers.
{
mirf_CSN_lo;
spi_fast_shift(R_REGISTER | (REGISTER_MASK & reg));
spi_transfer_sync(value,value,len);
mirf_CSN_hi;
}
void nrf_read_register(uint8_t reg, uint8_t * value, uint8_t len)
// Reads an array of bytes from the given start position in the NRF24L01+ registers.
{
CSN_LOW // ISP Slave on
spi_fast_shift(R_REGISTER | (REGISTER_MASK & reg));
spi_transfer_sync(value,value,len);
CSN_HIGH // ISP Slave off
}
extern void NRF24L01_get_received_data(uint8_t* data, uint8_t len)
{
NRF24L01_CSN_LOW;
spi_fast_shift(NRF24L01_CMD_R_RX_PAYLOAD);
spi_transfer_sync(data, data, len);
NRF24L01_CSN_HIGH;
NRF24L01_LOW_set_register(NRF24L01_REG_STATUS, NRF24L01_MASK_STATUS_RX_DR);
}
/* Read data from radio.
Since more than one radio could be present in a channel, this function check Node_Number to see if the
Package belong to this node, if does, it update the Global DATA variables and return 1,
if not it retransmit the package and return 0.
*/
uint8_t nrf_read_payload(void)
{
uint8_t ReturnFlag = 0;
CSN_LOW // Pull down chip select
spi_fast_shift( R_RX_PAYLOAD ); // Send Read Payload Command
spi_transfer_sync(buffer,buffer, PAYLOAD_WIDTH); // Read payload
CSN_HIGH // Pull up chip select
// clear status register flag IRQ, write 1 to clear bit.
nrf_config_register(STATUS,(1<<RX_DR) | (1<<TX_DS) | (1<<MAX_RT));
// Verify the the Received Node Number before accepting the data.
if (NODE_NUMBER == buffer[5]){
DATA0 = buffer[0];
DATA1 = buffer[1];
DATA2 = buffer[2];
DATA3 = buffer[3];
RECV_MSGID = buffer[4];
ReturnFlag = 1;
}
// Else forward the message
else {
// short delay to avoid collitions
_delay_loop_2(NODE_NUMBER * 100);
// configure radio in TX
nrf_tx_config();
// send package
nrf_send(buffer);
// configure radio as rx again.
nrf_rx_config();
}
// Return 1 if received packaged pertained to this node, else return 0.
return ReturnFlag;
}
// Read Configuration data package and save data in eeprom
void nrf_read_cfg_payload(void)
{
uint8_t data_input[CFG_PAYLOAD_WIDTH];
uint8_t trash_out[CFG_PAYLOAD_WIDTH];
CSN_LOW // Pull down chip select
spi_fast_shift( R_RX_PAYLOAD ); // Send Read Payload Command
spi_transfer_sync(trash_out,data_input, CFG_PAYLOAD_WIDTH); // Read payload
CSN_HIGH // Pull up chip select
// save received data in eeprom
remote_cfg_toEEPROM(data_input);
// clear status register flag IRQ, write 1 to clear bit.
nrf_config_register(STATUS,(1<<RX_DR) | (1<<TX_DS) | (1<<MAX_RT));
}
void nrf_read_cfg_payload(void)
// Sends a data package to the default address. Be sure to send the correct
// amount of bytes as configured as payload on the receiver.
{
uint8_t data_input[CFG_PAYLOAD_WIDTH];
uint8_t trash_out[CFG_PAYLOAD_WIDTH];
CSN_LOW // Pull down chip select
spi_fast_shift( R_RX_PAYLOAD ); // Send Read Payload Command
spi_transfer_sync(trash_out,data_input, CFG_PAYLOAD_WIDTH); // Read payload
CSN_HIGH // Pull up chip select
// save received data in eeprom
remote_cfg_toEEPROM(data_input);
// clear status register flag IRQ, write 1 to clear bit.
nrf_config_register(STATUS,(1<<RX_DR) | (1<<TX_DS) | (1<<MAX_RT));
}
