This is a work in progress for an NRF2401P
Dependents: NRF_receiver sender locker4 Weather_Station_Ofiicial ... more
About
This is a simple library to drive the nRF24l01+.
Hardware
This uses the commonly available breakout. The connections are shown below
Software
Use case: For a simple transmitter
tx code snipet
#include "NRF2401P.h" int main() { * * long long addr1=0xAB00CD; // setup address - any 5 byte number - same as RX * int channel =0x12; // [0-126] setup channel, must be same as RX * bool txOK; * char msg[32]; * char ackData[32]; * char len; * * // Setup * NRF2401P nrf1(PTD6,PTD7, PTD5,PTD4, PTC12); //mosi, miso, sclk, csn, ce) * nrf1.quickTxSetup(channel, addr1); // sets nrf24l01+ as transmitter * * // transmit * strcpy (msg, "Hello"); * txOK= nrf1.transmitData(msg,strlen(msg)); * * // read ack data if available * if (nrf1.isAckData()) { * len= nrf1.getRxData(ackData); // len is number of bytes in ackData * } *}
Use case: For a simple receiver
rx code snipet
#include "NRF2401P.h" *int main(){ * * long long addr1=0xAB00CD; // setup address - any 5 byte number - same as TX * int channel =0x12; // [0-126] setup channel, must be same as TX * bool txOK; * char msg[32]; * char ackData[32]; * char len; * * // Setup * NRF2401P nrf1(PTD6,PTD7, PTD5,PTD4, PTC12); //mosi, miso, sclk, csn, ce) * nrf1.quickRxSetup(channel, addr1); // sets nrf24l01+ as receiver, using pipe 1 * * // set ack data * sprintf(ackData,"Ack data"); * nrf1.acknowledgeData(ackData, strlen(ackData),1); // ack for pipe 1 * * // receive * while (! nrf1.isRxData()); // note this blocks until RX data * len= nrf1.getRxData(msg); // gets the message, len is length of msg * *}
Diff: NRF2401P.cpp
- Revision:
- 10:8a217441c38e
- Parent:
- 9:c21b80aaf250
- Child:
- 11:07f76589f00a
diff -r c21b80aaf250 -r 8a217441c38e NRF2401P.cpp --- a/NRF2401P.cpp Sat Jul 11 09:38:59 2015 +0000 +++ b/NRF2401P.cpp Sat Jul 11 11:18:37 2015 +0000 @@ -321,6 +321,30 @@ } /** +* Reads n bytes from a register +**/ +void NRF2401P::readReg( char address, char *data, char width ) +{ + char reg; + csn = 0; + int i; + // set up for writing + address &= 0x1F; + reg = address| R_REGISTER; + status = spi->write( reg ); + for ( i = width - 1; i >= 0; i-- ) { + data[i] = spi->write( 0x00 ); + } + csn = 1; + if (debug) { + sprintf(logMsg, " register read %d bytes from %02x (%02x) = ", width, address, status ); + for ( i=0; i<width; i++) + sprintf(logMsg, "%s %02x", logMsg, data[i]); + log(logMsg); + } +} + +/** * Clears the status flags RX_DR, TX_DS, MAX_RT */ void NRF2401P::clearStatus() @@ -674,6 +698,7 @@ void NRF2401P::printDetails() { char data; + char addr[addressWidth]; char status = checkStatus(); printf("STATUS\t\t = 0x%02x RX_DR=%x TX_DS=%x MAX_RT=%x RX_P_NO=%x TX_FULL=%x\r\n", status, (status & (1<<MASK_RX_DR))?1:0, @@ -682,6 +707,14 @@ (status >> RX_P_NO) & 7, (status & (1<<TX_FULL))?1:0 ); + readReg(RX_ADDR_P0, addr, addressWidth); printf("RX_ADDR_P0\t = 0x%02x%02x%02x%02x%02x\r\n", addr[4],addr[3],addr[2],addr[1],addr[0]); + readReg(RX_ADDR_P1, addr, addressWidth); printf("RX_ADDR_P1\t = 0x%02x%02x%02x%02x%02x\r\n", addr[4],addr[3],addr[2],addr[1],addr[0]); + readReg(RX_ADDR_P2, addr, addressWidth); printf("RX_ADDR_P2\t = 0x%02x%02x%02x%02x%02x\r\n", addr[4],addr[3],addr[2],addr[1],addr[0]); + readReg(RX_ADDR_P3, addr, addressWidth); printf("RX_ADDR_P3\t = 0x%02x%02x%02x%02x%02x\r\n", addr[4],addr[3],addr[2],addr[1],addr[0]); + readReg(RX_ADDR_P4, addr, addressWidth); printf("RX_ADDR_P4\t = 0x%02x%02x%02x%02x%02x\r\n", addr[4],addr[3],addr[2],addr[1],addr[0]); + readReg(RX_ADDR_P5, addr, addressWidth); printf("RX_ADDR_P5\t = 0x%02x%02x%02x%02x%02x\r\n", addr[4],addr[3],addr[2],addr[1],addr[0]); + readReg(TX_ADDR, addr, addressWidth); printf("TX_ADDR\t\t = 0x%02x%02x%02x%02x%02x\r\n", addr[4],addr[3],addr[2],addr[1],addr[0]); + printf("RX_PW_P0-5\t = "); readReg(RX_PW_P0, &data); printf("0x%02x ", data); readReg(RX_PW_P1, &data); printf("0x%02x ", data);