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
*
*}

NRF2401P.h@15:9998698cb041, 2015-06-18 (annotated)

Committer:
epgmdm
Date:
Thu Jun 18 20:54:25 2015 +0000
Revision:
15:9998698cb041
Parent:
5:7e253c677a1f 
Cleaned up code. most functions now return void. Status is tracked in the class. Use checkStatus().

Who changed what in which revision?

UserRevisionLine numberNew contents of line
epgmdm 0:8fd0531ae0be 1 /**
epgmdm 0:8fd0531ae0be 2 *@section DESCRIPTION
epgmdm 0:8fd0531ae0be 3 * mbed NRF2401+ Library
epgmdm 0:8fd0531ae0be 4 *@section LICENSE
epgmdm 0:8fd0531ae0be 5 * Copyright (c) 2015, Malcolm McCulloch
epgmdm 0:8fd0531ae0be 6 *
epgmdm 0:8fd0531ae0be 7 * Permission is hereby granted, free of charge, to any person obtaining a copy
epgmdm 0:8fd0531ae0be 8 * of this software and associated documentation files (the "Software"), to deal
epgmdm 0:8fd0531ae0be 9 * in the Software without restriction, including without limitation the rights
epgmdm 0:8fd0531ae0be 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
epgmdm 0:8fd0531ae0be 11 * copies of the Software, and to permit persons to whom the Software is
epgmdm 0:8fd0531ae0be 12 * furnished to do so, subject to the following conditions:
epgmdm 0:8fd0531ae0be 13 *
epgmdm 0:8fd0531ae0be 14 * The above copyright notice and this permission notice shall be included in
epgmdm 0:8fd0531ae0be 15 * all copies or substantial portions of the Software.
epgmdm 0:8fd0531ae0be 16 *
epgmdm 0:8fd0531ae0be 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
epgmdm 0:8fd0531ae0be 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
epgmdm 0:8fd0531ae0be 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
epgmdm 0:8fd0531ae0be 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
epgmdm 0:8fd0531ae0be 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
epgmdm 0:8fd0531ae0be 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
epgmdm 0:8fd0531ae0be 23 * THE SOFTWARE.
epgmdm 0:8fd0531ae0be 24 * @file "NRF2401P.h"
epgmdm 0:8fd0531ae0be 25 */
epgmdm 5:7e253c677a1f 26
epgmdm 5:7e253c677a1f 27 /** \brief A library to drive the nRF24l01+
epgmdm 5:7e253c677a1f 28 *
epgmdm 5:7e253c677a1f 29 * This library is a simple way to get the nRF24l01+ up and running.
epgmdm 5:7e253c677a1f 30 *
epgmdm 5:7e253c677a1f 31 *- Use case: For a simple transmitter
epgmdm 5:7e253c677a1f 32 *@code
epgmdm 5:7e253c677a1f 33 *int main() {
epgmdm 5:7e253c677a1f 34 *
epgmdm 5:7e253c677a1f 35 * long long addr1=0xAB00CD; // setup address - any 5 byte number - same as RX
epgmdm 5:7e253c677a1f 36 * int channel =0x12; // [0-126] setup channel, must be same as RX
epgmdm 5:7e253c677a1f 37 * bool txOK;
epgmdm 5:7e253c677a1f 38 * char msg[32];
epgmdm 5:7e253c677a1f 39 * char ackData[32];
epgmdm 5:7e253c677a1f 40 * char len;
epgmdm 5:7e253c677a1f 41 *
epgmdm 5:7e253c677a1f 42 * // Setup
epgmdm 5:7e253c677a1f 43 * NRF2401P nrf1(PTD6,PTD7, PTD5,PTD4, PTC12); //mosi, miso, sclk, csn, ce)
epgmdm 5:7e253c677a1f 44 * nrf1.quickTxSetup(channel, addr1); // sets nrf24l01+ as transmitter
epgmdm 5:7e253c677a1f 45 *
epgmdm 5:7e253c677a1f 46 * // transmit
epgmdm 5:7e253c677a1f 47 * strcpy (msg, "Hello");
epgmdm 5:7e253c677a1f 48 * txOK= nrf1.transmitData(msg,strlen(msg));
epgmdm 5:7e253c677a1f 49 *
epgmdm 5:7e253c677a1f 50 * // read ack data if available
epgmdm 5:7e253c677a1f 51 * if (nrf1.isAckData()) {
epgmdm 5:7e253c677a1f 52 * len= nrf1.getRxData(ackData); // len is number of bytes in ackData
epgmdm 5:7e253c677a1f 53 * }
epgmdm 5:7e253c677a1f 54 *}
epgmdm 5:7e253c677a1f 55 *@endcode
epgmdm 5:7e253c677a1f 56 *- Use case: For a simple receiver
epgmdm 5:7e253c677a1f 57 *@code
epgmdm 5:7e253c677a1f 58 *int main(){
epgmdm 5:7e253c677a1f 59 *
epgmdm 5:7e253c677a1f 60 * long long addr1=0xAB00CD; // setup address - any 5 byte number - same as TX
epgmdm 5:7e253c677a1f 61 * int channel =0x12; // [0-126] setup channel, must be same as TX
epgmdm 5:7e253c677a1f 62 * bool txOK;
epgmdm 5:7e253c677a1f 63 * char msg[32];
epgmdm 5:7e253c677a1f 64 * char ackData[32];
epgmdm 5:7e253c677a1f 65 * char len;
epgmdm 5:7e253c677a1f 66 *
epgmdm 5:7e253c677a1f 67 * // Setup
epgmdm 5:7e253c677a1f 68 * NRF2401P nrf1(PTD6,PTD7, PTD5,PTD4, PTC12); //mosi, miso, sclk, csn, ce)
epgmdm 5:7e253c677a1f 69 * nrf1.quickRxSetup(channel, addr1); // sets nrf24l01+ as receiver, using pipe 1
epgmdm 5:7e253c677a1f 70 *
epgmdm 5:7e253c677a1f 71 * // set ack data
epgmdm 5:7e253c677a1f 72 * sprintf(ackData,"Ack data");
epgmdm 5:7e253c677a1f 73 * nrf1.acknowledgeData(ackData, strlen(ackData),1); // ack for pipe 1
epgmdm 5:7e253c677a1f 74 *
epgmdm 5:7e253c677a1f 75 * // receive
epgmdm 5:7e253c677a1f 76 * while (! nrf1.isRxData()); // note this blocks until RX data
epgmdm 5:7e253c677a1f 77 * len= nrf1.getRxData(msg); // gets the message, len is length of msg
epgmdm 5:7e253c677a1f 78 *
epgmdm 5:7e253c677a1f 79 *}
epgmdm 5:7e253c677a1f 80 *@endcode
epgmdm 5:7e253c677a1f 81 */
epgmdm 0:8fd0531ae0be 82 class NRF2401P
epgmdm 0:8fd0531ae0be 83 {
epgmdm 0:8fd0531ae0be 84 public:
epgmdm 0:8fd0531ae0be 85 SPI *spi;
epgmdm 0:8fd0531ae0be 86 DigitalOut csn,ce;
epgmdm 0:8fd0531ae0be 87 char addressWidth;
epgmdm 0:8fd0531ae0be 88 char logMsg[80];
epgmdm 0:8fd0531ae0be 89 char status;
epgmdm 0:8fd0531ae0be 90 char statusS[32];
epgmdm 2:ca0a3c0bba70 91 char pipe0Add[5];
epgmdm 2:ca0a3c0bba70 92 char txAdd[5];
epgmdm 0:8fd0531ae0be 93 bool dynamic,debug;
epgmdm 0:8fd0531ae0be 94 Serial *pc;
epgmdm 0:8fd0531ae0be 95
epgmdm 0:8fd0531ae0be 96 NRF2401P (PinName mosi, PinName miso, PinName sclk, PinName _csn, PinName _ce);
epgmdm 0:8fd0531ae0be 97
epgmdm 15:9998698cb041 98 void acknowledgeData( char *data, char width, char pipe);
epgmdm 1:ff53b1ac3bad 99 char checkStatus();
epgmdm 15:9998698cb041 100 void clearStatus();
epgmdm 15:9998698cb041 101 void flushRx();
epgmdm 15:9998698cb041 102 void flushTx();
epgmdm 0:8fd0531ae0be 103 char getRxData(char * buffer);
epgmdm 0:8fd0531ae0be 104 char getRxWidth();
epgmdm 1:ff53b1ac3bad 105 bool isAckData();
epgmdm 0:8fd0531ae0be 106 bool isRxData();
epgmdm 0:8fd0531ae0be 107 void log (char *msg);
epgmdm 0:8fd0531ae0be 108 void quickRxSetup(int channel,long long addr);
epgmdm 0:8fd0531ae0be 109 void quickTxSetup(int channel,long long addr);
epgmdm 0:8fd0531ae0be 110 char readReg(char address, char *data);
epgmdm 15:9998698cb041 111 void testReceive();
epgmdm 15:9998698cb041 112 void testTransmit();
epgmdm 3:afe8d307b5c3 113 bool transmitData( char *data, char width );
epgmdm 0:8fd0531ae0be 114
epgmdm 15:9998698cb041 115 void setAddressWidth(char width);
epgmdm 15:9998698cb041 116 void setChannel(char chan);
epgmdm 2:ca0a3c0bba70 117 void setDynamicPayload();
epgmdm 15:9998698cb041 118 void setPwrUp();
epgmdm 15:9998698cb041 119 void setRadio(char speed,char power);
epgmdm 15:9998698cb041 120 void setRxAddress(char *address, char pipe);
epgmdm 15:9998698cb041 121 void setRxAddress(long long address, char pipe);
epgmdm 0:8fd0531ae0be 122 bool setRxMode();
epgmdm 15:9998698cb041 123 void setTxAddress(char *address);
epgmdm 15:9998698cb041 124 void setTxAddress(long long address);
epgmdm 0:8fd0531ae0be 125 bool setTxMode();
epgmdm 2:ca0a3c0bba70 126 void setTxRetry(char delay, char numTries);
epgmdm 2:ca0a3c0bba70 127 void start();
epgmdm 0:8fd0531ae0be 128 char * statusString();
epgmdm 15:9998698cb041 129 void writeReg(char address, char *data, char width);
epgmdm 15:9998698cb041 130 void writeReg(char address, char data);
epgmdm 0:8fd0531ae0be 131
epgmdm 0:8fd0531ae0be 132 void scratch();
epgmdm 0:8fd0531ae0be 133
epgmdm 0:8fd0531ae0be 134
epgmdm 0:8fd0531ae0be 135 };