Malcolm McCulloch / NRF2401P

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 /media/uploads/epgmdm/nrf24l01pinout.png

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:
16:a9b83d2b6915
Parent:
14:976a876819ae
Child:
17:b132fc1a27d2
--- a/NRF2401P.cpp	Sat Jul 11 22:17:36 2015 +0000
+++ b/NRF2401P.cpp	Thu Jan 28 14:37:32 2016 +0000
@@ -28,7 +28,7 @@
 #include "nRF24l01.h"
 
 NRF2401P::NRF2401P ( PinName mosi, PinName miso, PinName sclk, PinName _csn, PinName _ce ) :
-    csn( DigitalOut( _csn ) ), ce( DigitalOut( _ce ) )
+        csn( DigitalOut( _csn ) ), ce( DigitalOut( _ce ) )
 {
     addressWidth = 5;
     pc = new Serial( USBTX, USBRX ); // tx, rx
@@ -87,17 +87,19 @@
 }
 
 /**
-* Sets up a receiver using shockburst and dynamic payload. Uses pipe 1
+* Sets up a receiver using shockburst and dynamic payload. Uses pipe 0
 * defaults to 5 bytes
 */
 void NRF2401P::quickRxSetup(int channel,long long addrRx)
 {
     start();
     setChannel(channel);
-    setRxAddress(addrRx,1);
+    // setRxAddress(addrRx,1);
+    setRxAddress(addrRx,0);
     setRxMode();
     ce=1;
     wait(0.001f);
+    writeReg(FEATURE,0x06); // Enable dynamic ack packets
 }
 
 /**
@@ -146,8 +148,11 @@
     setChannel(channel);
     setTxAddress(addr);
     setTxMode();
+    writeReg(FEATURE,0x06);
     ce=1;
     wait (0.0016f); // wait for pll to settle
+    flushTx();
+    clearStatus();
 }
 
 /**
@@ -338,7 +343,7 @@
 * Reads n bytes from a register
 **/
 void NRF2401P::readReg( char address, char *data, char width )
-{    
+{
     char reg;
     csn = 0;
     int i;
@@ -491,18 +496,18 @@
 
     char reg = 0x0A + pipe;
     switch ( pipe ) {
-        case ( 0 ) :
+    case ( 0 ) :
         case ( 1 ) : {
-            writeReg(reg, address, addressWidth); //Write to RX_ADDR_P0 or _P1
-            break;
-        }
-        case ( 2 ) :
-        case ( 3 ) :
-        case ( 4 ) :
-        case ( 5 ) : {
-            writeReg(reg, address, 1); //Write to RX_ADDR_P2 ... _P5
-            break;
-        }
+                writeReg(reg, address, addressWidth); //Write to RX_ADDR_P0 or _P1
+                break;
+            }
+    case ( 2 ) :
+                case ( 3 ) :
+                    case ( 4 ) :
+                case ( 5 ) : {
+                        writeReg(reg, address, 1); //Write to RX_ADDR_P2 ... _P5
+                        break;
+                    }
 
     }
     readReg(EN_RXADDR, &reg);
@@ -572,7 +577,7 @@
     } else {
         readReg(RX_PW_P1, &width); // width of p1
     }
-    
+
     return width;
 }
 
@@ -715,8 +720,8 @@
     if (newline) {
         printf("\r\n");
     }
-}   
-    
+}
+
 void NRF2401P::printReg(char* name, char address, char width, bool newline)
 {
     char data[width];