//Fetch the next act payload
//Return the payload length
char NRF24L01_RxPacket(char *payload)
{
int len;
int i;
//Get the packet length
RADIO_EN_CS();
SPI_SendByte(CMD_RX_PL_WID);
len = SPI_ReceiveByte();
RADIO_DIS_CS();
if (len>0 && len<33)
{
//Read the packet from the RX buffer
RADIO_EN_CS();
SPI_SendByte(CMD_R_RX_PAYLOAD);
for(i=0;i<len;i++)
payload[i] = SPI_ReceiveByte();
RADIO_DIS_CS();
} else {
len=0;
}
//Pulse CE
//CE_PULSE();
return len;
}
//Fetch the next act payload
//Return the payload length
char radioRxPacket(__xdata char *payload)
{
int len;
int i;
//Get the packet length
RADIO_EN_CS();
spiRadioSend(CMD_RX_PL_WID);
len = spiRadioReceive();
RADIO_DIS_CS();
if (len>0 && len<33)
{
//Read the packet from the RX buffer
RADIO_EN_CS();
spiRadioSend(CMD_R_RX_PAYLOAD);
for(i=0;i<len;i++)
payload[i] = spiRadioReceive();
RADIO_DIS_CS();
} else {
len=0;
}
//Pulse CE
//CE_PULSE();
return len;
}
//Set the TX and RX address
void radioSetAddress(__xdata char* address)
{
int i;
RADIO_EN_CS();
spiRadioSend(CMD_W_REG | REG_TX_ADDR);
for(i=0; i<5; i++)
spiRadioSend(address[i]);
RADIO_DIS_CS();
RADIO_EN_CS();
spiRadioSend(CMD_W_REG | REG_RX_ADDR_P0);
for(i=0; i<5; i++)
spiRadioSend(address[i]);
RADIO_DIS_CS();
}
//Set the TX and RX address
void NRF24L01_SetAddress(char* address)
{
int i;
RADIO_EN_CS();
SPI_SendByte(CMD_W_REG | REG_TX_ADDR);
for(i=0; i<5; i++)
SPI_SendByte(address[i]);
RADIO_DIS_CS();
RADIO_EN_CS();
SPI_SendByte(CMD_W_REG | REG_RX_ADDR_P0);
for(i=0; i<5; i++)
SPI_SendByte(address[i]);
RADIO_DIS_CS();
}
//Nop command, permit to get the status byte
char NRF24L01_Nop()
{
char status;
RADIO_EN_CS();
status = SPI_SendByte(CMD_NOP);
RADIO_DIS_CS();
return status;
}
//Nop command, permit to get the status byte
char radioNop()
{
char status;
RADIO_EN_CS();
status = spiRadioSend(CMD_NOP);
RADIO_DIS_CS();
return status;
}
char NRF24L01_FlushRx()
{
char status;
RADIO_EN_CS();
status = SPI_SendByte(CMD_FLUSH_RX);
RADIO_DIS_CS();
return status;
}
char radioFlushRx()
{
char status;
RADIO_EN_CS();
status = spiRadioSend(CMD_FLUSH_RX);
RADIO_DIS_CS();
return status;
}
unsigned char nrfFlushTx()
{
unsigned char status;
RADIO_EN_CS();
status = spiSendByte(CMD_FLUSH_TX);
RADIO_DIS_CS();
return status;
}
/* Sent the NOP command. Used to get the status byte */
unsigned char nrfNop()
{
unsigned char status;
RADIO_EN_CS();
status = spiSendByte(CMD_NOP);
RADIO_DIS_CS();
return status;
}
// Return the payload length
unsigned char nrfRxLength(unsigned int pipe)
{
unsigned char length;
RADIO_EN_CS();
spiSendByte(CMD_RX_PL_WID);
length = spiReceiveByte();
RADIO_DIS_CS();
return length;
}
char radioReadReg(char addr)
{
char value;
RADIO_EN_CS();
spiRadioSend(CMD_R_REG | (addr&0x1F));
value = spiRadioSend(0xA5);
RADIO_DIS_CS();
return value;
}
char radioWriteReg(char addr, char value)
{
char status;
RADIO_EN_CS();
status = spiRadioSend(CMD_W_REG | (addr&0x1F));
spiRadioSend(value);
RADIO_DIS_CS();
return value;
}
char NRF24L01_WriteReg(char addr, char value)
{
char status;
RADIO_EN_CS();
status = SPI_SendByte(CMD_W_REG | (addr&0x1F));
SPI_SendByte(value);
RADIO_DIS_CS();
return value;
}
char NRF24L01_ReadReg(char addr)
{
char value;
RADIO_EN_CS();
SPI_SendByte(CMD_R_REG | (addr&0x1F));
value = SPI_ReceiveByte();
RADIO_DIS_CS();
return value;
}
unsigned char nrfActivate()
{
unsigned char status;
RADIO_EN_CS();
status = spiSendByte(CMD_ACTIVATE);
spiSendByte(ACTIVATE_DATA);
RADIO_DIS_CS();
return status;
}
//Send a packet as acknowledgment payload
void radioAckPacket(char pipe, __xdata char* payload, char len)
{
int i;
RADIO_EN_CS();
/* Send the read command with the address */
spiRadioSend(CMD_W_ACK_PAYLOAD(pipe));
/* Read LEN bytes */
for(i=0; i<len; i++)
spiRadioSend(payload[i]);
RADIO_DIS_CS();
}
//Send a packed in no-ack mode
void NRF24L01_TxPacketNoAck(char *payload, char len)
{
int i;
//Send the packet in the TX buffer
RADIO_EN_CS();
SPI_SendByte(CMD_W_PAYLOAD_NO_ACK);
for(i=0;i<len;i++)
SPI_SendByte(payload[i]);
RADIO_DIS_CS();
//Pulse CE
CE_PULSE();
return;
}
//Send a packed in no-ack mode
void radioTxPacketNoAck(__xdata char *payload, char len)
{
int i;
//Send the packet in the TX buffer
RADIO_EN_CS();
spiRadioSend(CMD_W_TX_PAYLOAD_NO_ACK);
for(i=0;i<len;i++)
spiRadioSend(payload[i]);
RADIO_DIS_CS();
//Pulse CE
CE_PULSE();
return;
}
// Read the RX payload
unsigned char nrfReadRX(char *buffer, int len)
{
unsigned char status;
int i;
RADIO_EN_CS();
/* Send the read command with the address */
status = spiSendByte(CMD_R_RX_PAYLOAD);
/* Read LEN bytes */
for(i=0; i<len; i++)
buffer[i]=spiReceiveByte();
RADIO_DIS_CS();
return status;
}
/* Write len bytes a nRF24L register. 5 Bytes max */
unsigned char nrfWriteReg(unsigned char address, char *buffer, int len)
{
unsigned char status;
int i;
RADIO_EN_CS();
/* Send the write command with the address */
status = spiSendByte( CMD_W_REG | (address&0x1F) );
/* Write LEN bytes */
for(i=0; i<len; i++)
spiSendByte(buffer[i]);
RADIO_DIS_CS();
return status;
}
// Write the ack payload of the pipe 0
unsigned char nrfWriteAck(unsigned int pipe, char *buffer, int len)
{
unsigned char status;
int i;
ASSERT(pipe<6);
RADIO_EN_CS();
/* Send the read command with the address */
status = spiSendByte(CMD_W_ACK_PAYLOAD(pipe));
/* Read LEN bytes */
for(i=0; i<len; i++)
spiSendByte(buffer[i]);
RADIO_DIS_CS();
return status;
}
