Malcolm McCulloch
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:
- 18:220df99d2d41
- Parent:
- 17:b132fc1a27d2
- Child:
- 19:813161fd59a2
--- a/NRF2401P.cpp Sun Feb 07 22:34:47 2016 +0000
+++ b/NRF2401P.cpp Mon Feb 08 00:09:12 2016 +0000
@@ -260,6 +260,29 @@
}
/**
+* re Transmits data
+*/
+char NRF2401P::retransmitData( )
+{
+ checkStatus();
+ if ((status>>4)&1) { // Max retries - flush tx
+ flushTx();
+ }
+ //clearStatus();
+ //ce = 1;
+ csn = 0;
+ char address = REUSE_TX_PL; //REUSE_TX_PL
+ // set up for writing
+ status = spi->write( address );
+ csn = 1;
+ wait(0.001);
+ if (debug) {
+ sprintf(logMsg, "Reransmit data" );
+ log(logMsg);
+ }
+ return status;
+}
+/**
* sets acknowledge data width bytes of data. width <32
*/
char NRF2401P::acknowledgeData( char *data, char width, char pipe )
