Reynier Braal
Versie 0.2 Het versturen via de NRF werkt nog niet helemaal omdat er per 4 bytes verstuurd moet worden. Wordt gefixt d.m.v. dynamic stuff!
Fork of
rtos_basic
by 
mbed official
Revision 7:88ba5138f810, committed 2016-04-29
- Comitter:
- Reynier
- Date:
- Fri Apr 29 15:27:26 2016 +0000
- Parent:
- 6:209f4db62daf
- Commit message:
- Versie 0.2 Het versturen via de NRF werkt nog niet helemaal omdat er per 4 bytes verstuurd moet worden. Wordt gefixt d.m.v. dynamic stuff!
Changed in this revision
diff -r 209f4db62daf -r 88ba5138f810 main.cpp
--- a/main.cpp Tue Jun 04 16:01:32 2013 +0100
+++ b/main.cpp Fri Apr 29 15:27:26 2016 +0000
@@ -1,21 +1,210 @@
-#include "mbed.h"
-#include "rtos.h"
-
-DigitalOut led1(LED1);
+/* *** INCLUDE **********************************************************************/
+ #include "mbed.h"
+ #include "rtos.h"
+ #include "nRF24L01P.h"
+
+/* *** DEFINE ***********************************************************************/
+ #define sDestination_SIZE 20
+ #define sMessage_SIZE 100
+
+ #define MF_RESET PC_13
+ #define TRANSFER_SIZE_NRF 4
+ #define TRANSFER_SIZE_UART 100
+ #define nCS PA_15
+ #define SCK PB_3
+ #define MISO PB_4
+ #define MOSI PB_5
+ #define IRQ PB_6
+ #define CE PB_7
+
+/* *** THREADS **********************************************************************/
+ void LED_thread(void const *args);
+ void MAIL_thread(void const *args);
+
+/* *** FUNCTIONS ********************************************************************/
+ void initUART (void);
+ void initWireLess(void);
+ void UART_GetMessage(void);
+ void WLESS_GetMessage(void);
+ void flushCArray(char str[]);
+
+/* *** GLOBAL DATA ******************************************************************/
+// UART
+ Serial raspPi(USBTX, USBRX);
+ char getRaspPiData[TRANSFER_SIZE_UART], sendRaspPiData[TRANSFER_SIZE_UART];
+ int getRaspPiDataCnt, sendRaspPiDataCnt = 0;
+
+// WIRELESS
+ InterruptIn irqWLESS(IRQ);
+ nRF24L01P NRF(MOSI, MISO, SCK, nCS, CE, IRQ);
+ char getWLESSData[TRANSFER_SIZE_NRF], sendWLESSData[TRANSFER_SIZE_NRF];
+ int getWLESSDataCnt, sendWLESSDataCnt = 0;
+ unsigned long long myAdress = 0x010203;
+ unsigned long long otherAdress = 0x030201;
+
+// MAIL
+ typedef struct mail_t {
+ char sDestination[sDestination_SIZE]; // Name of the Thread
+ char sMessage[sMessage_SIZE]; // Type here you message
+ }mail_t;
+
+ Mail<mail_t, 10> mailBox;
+ mail_t *mail;
+
DigitalOut led2(LED2);
-
-void led2_thread(void const *args) {
- while (true) {
- led2 = !led2;
- Thread::wait(1000);
+//Use for debug!!
+DigitalOut check1(PB_15);
+DigitalOut check2(PB_14);
+DigitalOut check3(PB_13);
+// End debug
+
+/* *** MAIN *************************************************************************/
+int main() {
+
+ Thread threadLED(LED_thread);
+ Thread threadMAIL(MAIL_thread);
+ initUART();
+ initWireLess();
+ irqWLESS.fall(&WLESS_GetMessage);
+
+ while(1) {
+ ;
}
}
-
-int main() {
- Thread thread(led2_thread);
+
+/* *** LED THREAD *******************************************************************/
+void LED_thread(void const *args) {
+ while (true) {
+ led2 = !led2;
+ Thread::wait(500);
+ }
+}
+
+/* *** MAIL THREAD ******************************************************************/
+void MAIL_thread(void const *args) {
+ while(true) {
+ osEvent evt = mailBox.get();
+/*
+ if (evt.status == osEventMail) {
+ if (strcmp(mail->sDestination, "WLESS") == 0) {
+ // functie aanroepen voor de NRF
+ }
+ else if (strcmp(mail->sDestination, "UART") == 0) {
+ // functie aanroepen voor de UART
+ }
+ else if (strcmp(mail->sDestination, "LED") == 0) {
+ // functie aanroepen voor de LED
+ }
+ mailBox.free(mail);
+ }
+*/
+ if (evt.status == osEventMail) {
+ if (strcmp(mail->sDestination, "WLESS") == 0) {
+
+ raspPi.printf("Data from mail: %s ", mail->sMessage);
+
+ sendWLESSDataCnt = 0;
+// Deze functie werkt nog helemaal omdat er per 4 bytes verstuurd moeten worden...
+// Wanneer dit aangepast wordt doet hij het voor 100%!
+ for (int sndData = 0; mail->sMessage[sndData] != '!'; sndData++) {
+
+
+ sendWLESSData[sendWLESSDataCnt++] = mail->sMessage[sndData];
+
+ if (sendWLESSDataCnt == TRANSFER_SIZE_NRF) {
+
+ NRF.write( NRF24L01P_PIPE_P0, sendWLESSData, TRANSFER_SIZE_NRF);
+ sendWLESSDataCnt = 0;
+ }
+ else if (mail->sMessage[sndData] == '!') {
+
+ for (int sndRestData = sendWLESSDataCnt; sndRestData <= TRANSFER_SIZE_NRF; sndRestData++) {
+ sendWLESSData[sndRestData] = 0;
+ }
+ NRF.write( NRF24L01P_PIPE_P0, sendWLESSData, TRANSFER_SIZE_NRF );
+ }
+ }
+
+ flushCArray(sendWLESSData);
+ mailBox.free(mail);
+ }
+ }
+ Thread::wait(100);
+ }
+}
+
+/* *** INIT UART ********************************************************************/
+void initUART () {
+ raspPi.baud(9600);
+ raspPi.attach(&UART_GetMessage);
+ flushCArray(getRaspPiData);
+ flushCArray(sendRaspPiData);
+ raspPi.printf("Hi, from NUCLEO! \r\n");
+}
+
+
+/* *** INIT WIRELESS ****************************************************************/
+void initWireLess() {
+ flushCArray(getWLESSData);
+ flushCArray(sendWLESSData);
+
+ NRF.powerUp();
+ NRF.setTransferSize( TRANSFER_SIZE_NRF );
+ NRF.setTxAddress(otherAdress, 3);
+ NRF.setRxAddress(otherAdress, 3, NRF24L01P_PIPE_P0);
+ NRF.enableAutoAcknowledge(NRF24L01P_PIPE_P0);
+ NRF.enableAutoRetransmit(1000, 10);
+ NRF.setAirDataRate(NRF24L01P_DATARATE_250_KBPS);
+ NRF.setRfOutputPower(NRF24L01P_TX_PWR_ZERO_DB);
+ NRF.setRxAddress(myAdress, 3, NRF24L01P_PIPE_P1);
+ NRF.setRfFrequency(2500);
- while (true) {
- led1 = !led1;
- Thread::wait(500);
+ NRF.setReceiveMode();
+ NRF.enable();
+
+ // USE FOR DEBUG
+ raspPi.printf( "NRF+ Frequency : %d MHz\r\n", NRF.getRfFrequency() );
+ raspPi.printf( "NRF+ Output power : %d dBm\r\n", NRF.getRfOutputPower() );
+ raspPi.printf( "NRF+ Data Rate : %d kbps\r\n", NRF.getAirDataRate() );
+ raspPi.printf( "NRF+ TX Address : 0x%010llX\r\n", NRF.getTxAddress() );
+ raspPi.printf( "NRF+ RX0 Address : 0x%010llX\r\n", NRF.getRxAddress(0) );
+ raspPi.printf( "NRF+ RX1 Address : 0x%010llX\r\n", NRF.getRxAddress(1) );
+ raspPi.printf( "Type keys to test transfers:\r\n (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE_NRF );
+
+}
+
+/* *** UART GET MESSAGE *************************************************************/
+void UART_GetMessage () {
+
+ if (getRaspPiDataCnt <= TRANSFER_SIZE_UART){
+ getRaspPiData[getRaspPiDataCnt] = raspPi.getc();
+ raspPi.putc(getRaspPiData[getRaspPiDataCnt]);
+ getRaspPiDataCnt++;
}
+
+ if(getRaspPiData[getRaspPiDataCnt-1] == '!'){
+ mail = mailBox.alloc();
+ //strncpy (mail->sDestination, "WLESS", strlen("WLESS"));
+ //strncpy (mail->sMessage, getRaspPiData, getRaspPiDataCnt-1);
+ strcpy (mail->sDestination, "WLESS");
+ strcpy (mail->sMessage, getRaspPiData);
+ mailBox.put(mail);
+ getRaspPiDataCnt = 0;
+ flushCArray(getRaspPiData);
+ }
}
+
+/* *** WIRELESS GET MESSAGE *********************************************************/
+void WLESS_GetMessage () {
+// Deze functie nog niet getest!
+ getWLESSDataCnt = NRF.read( NRF24L01P_PIPE_P0, getWLESSData, sizeof( getWLESSData ) );
+
+ for ( int i = 0; getWLESSDataCnt > 0; getWLESSDataCnt--, i++ ) {
+ raspPi.putc( getWLESSData[i] );
+ }
+}
+
+/* *** FLUSH CHAR ARRAY *************************************************************/
+void flushCArray(char str[]) {
+ memset(str, '\n', strlen(str));
+}
diff -r 209f4db62daf -r 88ba5138f810 mbed-rtos.lib --- a/mbed-rtos.lib Tue Jun 04 16:01:32 2013 +0100 +++ b/mbed-rtos.lib Fri Apr 29 15:27:26 2016 +0000 @@ -1,1 +1,1 @@ -https://mbed.org/users/mbed_official/code/mbed-rtos/ \ No newline at end of file +https://developer.mbed.org/teams/Project5_Software/code/RTOS/#e3b1083b1577
diff -r 209f4db62daf -r 88ba5138f810 mbed.bld --- a/mbed.bld Tue Jun 04 16:01:32 2013 +0100 +++ b/mbed.bld Fri Apr 29 15:27:26 2016 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/ \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/082adc85693f \ No newline at end of file
diff -r 209f4db62daf -r 88ba5138f810 nRF24L01P.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF24L01P.cpp Fri Apr 29 15:27:26 2016 +0000
@@ -0,0 +1,1047 @@
+/**
+ * @file nRF24L01P.cpp
+ *
+ * @author Owen Edwards
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2010 Owen Edwards
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * @section DESCRIPTION
+ *
+ * nRF24L01+ Single Chip 2.4GHz Transceiver from Nordic Semiconductor.
+ *
+ * Datasheet:
+ *
+ * http://www.nordicsemi.no/files/Product/data_sheet/nRF24L01P_Product_Specification_1_0.pdf
+ */
+
+/**
+ * Includes
+ */
+#include "nRF24L01P.h"
+
+//Use for debug!!
+extern DigitalOut check1;
+extern DigitalOut check2;
+extern DigitalOut check3;
+// End debug
+
+/**
+ * Defines
+ *
+ * (Note that all defines here start with an underscore, e.g. '_NRF24L01P_MODE_UNKNOWN',
+ * and are local to this library. The defines in the nRF24L01P.h file do not start
+ * with the underscore, and can be used by code to access this library.)
+ */
+
+typedef enum {
+ _NRF24L01P_MODE_UNKNOWN,
+ _NRF24L01P_MODE_POWER_DOWN,
+ _NRF24L01P_MODE_STANDBY,
+ _NRF24L01P_MODE_RX,
+ _NRF24L01P_MODE_TX,
+} nRF24L01P_Mode_Type;
+
+/*
+ * The following FIFOs are present in nRF24L01+:
+ * TX three level, 32 byte FIFO
+ * RX three level, 32 byte FIFO
+ */
+#define _NRF24L01P_TX_FIFO_COUNT 3
+#define _NRF24L01P_RX_FIFO_COUNT 3
+
+#define _NRF24L01P_TX_FIFO_SIZE 32
+#define _NRF24L01P_RX_FIFO_SIZE 32
+
+#define _NRF24L01P_SPI_MAX_DATA_RATE 10000000
+
+#define _NRF24L01P_SPI_CMD_RD_REG 0x00
+#define _NRF24L01P_SPI_CMD_WR_REG 0x20
+#define _NRF24L01P_SPI_CMD_RD_RX_PAYLOAD 0x61
+#define _NRF24L01P_SPI_CMD_WR_TX_PAYLOAD 0xa0
+#define _NRF24L01P_SPI_CMD_FLUSH_TX 0xe1
+#define _NRF24L01P_SPI_CMD_FLUSH_RX 0xe2
+#define _NRF24L01P_SPI_CMD_REUSE_TX_PL 0xe3
+#define _NRF24L01P_SPI_CMD_R_RX_PL_WID 0x60
+#define _NRF24L01P_SPI_CMD_W_ACK_PAYLOAD 0xa8
+#define _NRF24L01P_SPI_CMD_W_TX_PYLD_NO_ACK 0xb0
+#define _NRF24L01P_SPI_CMD_NOP 0xff
+
+
+#define _NRF24L01P_REG_CONFIG 0x00
+#define _NRF24L01P_REG_EN_AA 0x01
+#define _NRF24L01P_REG_EN_RXADDR 0x02
+#define _NRF24L01P_REG_SETUP_AW 0x03
+#define _NRF24L01P_REG_SETUP_RETR 0x04
+#define _NRF24L01P_REG_RF_CH 0x05
+#define _NRF24L01P_REG_RF_SETUP 0x06
+#define _NRF24L01P_REG_STATUS 0x07
+#define _NRF24L01P_REG_OBSERVE_TX 0x08
+#define _NRF24L01P_REG_RPD 0x09
+#define _NRF24L01P_REG_RX_ADDR_P0 0x0a
+#define _NRF24L01P_REG_RX_ADDR_P1 0x0b
+#define _NRF24L01P_REG_RX_ADDR_P2 0x0c
+#define _NRF24L01P_REG_RX_ADDR_P3 0x0d
+#define _NRF24L01P_REG_RX_ADDR_P4 0x0e
+#define _NRF24L01P_REG_RX_ADDR_P5 0x0f
+#define _NRF24L01P_REG_TX_ADDR 0x10
+#define _NRF24L01P_REG_RX_PW_P0 0x11
+#define _NRF24L01P_REG_RX_PW_P1 0x12
+#define _NRF24L01P_REG_RX_PW_P2 0x13
+#define _NRF24L01P_REG_RX_PW_P3 0x14
+#define _NRF24L01P_REG_RX_PW_P4 0x15
+#define _NRF24L01P_REG_RX_PW_P5 0x16
+#define _NRF24L01P_REG_FIFO_STATUS 0x17
+#define _NRF24L01P_REG_DYNPD 0x1c
+#define _NRF24L01P_REG_FEATURE 0x1d
+
+#define _NRF24L01P_REG_ADDRESS_MASK 0x1f
+
+// CONFIG register:
+#define _NRF24L01P_CONFIG_PRIM_RX (1<<0)
+#define _NRF24L01P_CONFIG_PWR_UP (1<<1)
+#define _NRF24L01P_CONFIG_CRC0 (1<<2)
+#define _NRF24L01P_CONFIG_EN_CRC (1<<3)
+#define _NRF24L01P_CONFIG_MASK_MAX_RT (1<<4)
+#define _NRF24L01P_CONFIG_MASK_TX_DS (1<<5)
+#define _NRF24L01P_CONFIG_MASK_RX_DR (1<<6)
+
+#define _NRF24L01P_CONFIG_CRC_MASK (_NRF24L01P_CONFIG_EN_CRC|_NRF24L01P_CONFIG_CRC0)
+#define _NRF24L01P_CONFIG_CRC_NONE (0)
+#define _NRF24L01P_CONFIG_CRC_8BIT (_NRF24L01P_CONFIG_EN_CRC)
+#define _NRF24L01P_CONFIG_CRC_16BIT (_NRF24L01P_CONFIG_EN_CRC|_NRF24L01P_CONFIG_CRC0)
+
+// EN_AA register:
+#define _NRF24L01P_EN_AA_NONE 0
+
+// EN_RXADDR register:
+#define _NRF24L01P_EN_RXADDR_NONE 0
+
+// SETUP_AW register:
+#define _NRF24L01P_SETUP_AW_AW_MASK (0x3<<0)
+#define _NRF24L01P_SETUP_AW_AW_3BYTE (0x1<<0)
+#define _NRF24L01P_SETUP_AW_AW_4BYTE (0x2<<0)
+#define _NRF24L01P_SETUP_AW_AW_5BYTE (0x3<<0)
+
+// SETUP_RETR register:
+#define _NRF24L01P_SETUP_RETR_NONE 0
+
+// RF_SETUP register:
+#define _NRF24L01P_RF_SETUP_RF_PWR_MASK (0x3<<1)
+#define _NRF24L01P_RF_SETUP_RF_PWR_0DBM (0x3<<1)
+#define _NRF24L01P_RF_SETUP_RF_PWR_MINUS_6DBM (0x2<<1)
+#define _NRF24L01P_RF_SETUP_RF_PWR_MINUS_12DBM (0x1<<1)
+#define _NRF24L01P_RF_SETUP_RF_PWR_MINUS_18DBM (0x0<<1)
+
+#define _NRF24L01P_RF_SETUP_RF_DR_HIGH_BIT (1 << 3)
+#define _NRF24L01P_RF_SETUP_RF_DR_LOW_BIT (1 << 5)
+#define _NRF24L01P_RF_SETUP_RF_DR_MASK (_NRF24L01P_RF_SETUP_RF_DR_LOW_BIT|_NRF24L01P_RF_SETUP_RF_DR_HIGH_BIT)
+#define _NRF24L01P_RF_SETUP_RF_DR_250KBPS (_NRF24L01P_RF_SETUP_RF_DR_LOW_BIT)
+#define _NRF24L01P_RF_SETUP_RF_DR_1MBPS (0)
+#define _NRF24L01P_RF_SETUP_RF_DR_2MBPS (_NRF24L01P_RF_SETUP_RF_DR_HIGH_BIT)
+
+// STATUS register:
+#define _NRF24L01P_STATUS_TX_FULL (1<<0)
+#define _NRF24L01P_STATUS_RX_P_NO (0x7<<1)
+#define _NRF24L01P_STATUS_MAX_RT (1<<4)
+#define _NRF24L01P_STATUS_TX_DS (1<<5)
+#define _NRF24L01P_STATUS_RX_DR (1<<6)
+
+// RX_PW_P0..RX_PW_P5 registers:
+#define _NRF24L01P_RX_PW_Px_MASK 0x3F
+
+#define _NRF24L01P_TIMING_Tundef2pd_us 100000 // 100mS
+#define _NRF24L01P_TIMING_Tstby2a_us 130 // 130uS
+#define _NRF24L01P_TIMING_Thce_us 10 // 10uS
+#define _NRF24L01P_TIMING_Tpd2stby_us 4500 // 4.5mS worst case
+#define _NRF24L01P_TIMING_Tpece2csn_us 4 // 4uS
+
+/**
+ * Methods
+ */
+
+nRF24L01P::nRF24L01P(PinName mosi,
+ PinName miso,
+ PinName sck,
+ PinName csn,
+ PinName ce,
+ PinName irq) : spi_(mosi, miso, sck), nCS_(csn), ce_(ce), nIRQ_(irq) {
+
+ mode = _NRF24L01P_MODE_UNKNOWN;
+
+ disable();
+
+ nCS_ = 1;
+
+ spi_.frequency(_NRF24L01P_SPI_MAX_DATA_RATE/5); // 2Mbit, 1/5th the maximum transfer rate for the SPI bus
+ spi_.format(8,0); // 8-bit, ClockPhase = 0, ClockPolarity = 0
+
+ wait_us(_NRF24L01P_TIMING_Tundef2pd_us); // Wait for Power-on reset
+
+ setRegister(_NRF24L01P_REG_CONFIG, 0); // Power Down
+
+ setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_MAX_RT|_NRF24L01P_STATUS_TX_DS|_NRF24L01P_STATUS_RX_DR); // Clear any pending interrupts
+
+ //
+ // Setup default configuration
+ //
+ disableAllRxPipes();
+ setRfFrequency();
+ setRfOutputPower();
+ setAirDataRate();
+ setCrcWidth();
+ setTxAddress();
+ setRxAddress();
+ disableAutoAcknowledge();
+ disableAutoRetransmit();
+ setTransferSize();
+
+ mode = _NRF24L01P_MODE_POWER_DOWN;
+
+}
+
+
+void nRF24L01P::powerUp(void) {
+
+ int config = getRegister(_NRF24L01P_REG_CONFIG);
+
+ config |= _NRF24L01P_CONFIG_PWR_UP;
+
+ setRegister(_NRF24L01P_REG_CONFIG, config);
+
+ // Wait until the nRF24L01+ powers up
+ wait_us( _NRF24L01P_TIMING_Tpd2stby_us );
+
+ mode = _NRF24L01P_MODE_STANDBY;
+
+}
+
+
+void nRF24L01P::powerDown(void) {
+
+ int config = getRegister(_NRF24L01P_REG_CONFIG);
+
+ config &= ~_NRF24L01P_CONFIG_PWR_UP;
+
+ setRegister(_NRF24L01P_REG_CONFIG, config);
+
+ // Wait until the nRF24L01+ powers down
+ wait_us( _NRF24L01P_TIMING_Tpd2stby_us ); // This *may* not be necessary (no timing is shown in the Datasheet), but just to be safe
+
+ mode = _NRF24L01P_MODE_POWER_DOWN;
+
+}
+
+
+void nRF24L01P::setReceiveMode(void) {
+
+ if ( _NRF24L01P_MODE_POWER_DOWN == mode ) powerUp();
+
+ int config = getRegister(_NRF24L01P_REG_CONFIG);
+
+ config |= _NRF24L01P_CONFIG_PRIM_RX;
+
+ setRegister(_NRF24L01P_REG_CONFIG, config);
+
+ mode = _NRF24L01P_MODE_RX;
+
+}
+
+
+void nRF24L01P::setTransmitMode(void) {
+
+ if ( _NRF24L01P_MODE_POWER_DOWN == mode ) powerUp();
+
+ int config = getRegister(_NRF24L01P_REG_CONFIG);
+
+ config &= ~_NRF24L01P_CONFIG_PRIM_RX;
+
+ setRegister(_NRF24L01P_REG_CONFIG, config);
+
+ mode = _NRF24L01P_MODE_TX;
+
+}
+
+
+void nRF24L01P::enable(void) {
+
+ ce_ = 1;
+ wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
+
+}
+
+
+void nRF24L01P::disable(void) {
+
+ ce_ = 0;
+
+}
+
+void nRF24L01P::setRfFrequency(int frequency) {
+
+ if ( ( frequency < NRF24L01P_MIN_RF_FREQUENCY ) || ( frequency > NRF24L01P_MAX_RF_FREQUENCY ) ) {
+
+ error( "nRF24L01P: Invalid RF Frequency setting %d\r\n", frequency );
+ return;
+
+ }
+
+ int channel = ( frequency - NRF24L01P_MIN_RF_FREQUENCY ) & 0x7F;
+
+ setRegister(_NRF24L01P_REG_RF_CH, channel);
+
+}
+
+
+int nRF24L01P::getRfFrequency(void) {
+
+ int channel = getRegister(_NRF24L01P_REG_RF_CH) & 0x7F;
+
+ return ( channel + NRF24L01P_MIN_RF_FREQUENCY );
+
+}
+
+
+void nRF24L01P::setRfOutputPower(int power) {
+
+ int rfSetup = getRegister(_NRF24L01P_REG_RF_SETUP) & ~_NRF24L01P_RF_SETUP_RF_PWR_MASK;
+
+ switch ( power ) {
+
+ case NRF24L01P_TX_PWR_ZERO_DB:
+ rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_0DBM;
+ break;
+
+ case NRF24L01P_TX_PWR_MINUS_6_DB:
+ rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_MINUS_6DBM;
+ break;
+
+ case NRF24L01P_TX_PWR_MINUS_12_DB:
+ rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_MINUS_12DBM;
+ break;
+
+ case NRF24L01P_TX_PWR_MINUS_18_DB:
+ rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_MINUS_18DBM;
+ break;
+
+ default:
+ error( "nRF24L01P: Invalid RF Output Power setting %d\r\n", power );
+ return;
+
+ }
+
+ setRegister(_NRF24L01P_REG_RF_SETUP, rfSetup);
+
+}
+
+
+int nRF24L01P::getRfOutputPower(void) {
+
+ int rfPwr = getRegister(_NRF24L01P_REG_RF_SETUP) & _NRF24L01P_RF_SETUP_RF_PWR_MASK;
+
+ switch ( rfPwr ) {
+
+ case _NRF24L01P_RF_SETUP_RF_PWR_0DBM:
+ return NRF24L01P_TX_PWR_ZERO_DB;
+
+ case _NRF24L01P_RF_SETUP_RF_PWR_MINUS_6DBM:
+ return NRF24L01P_TX_PWR_MINUS_6_DB;
+
+ case _NRF24L01P_RF_SETUP_RF_PWR_MINUS_12DBM:
+ return NRF24L01P_TX_PWR_MINUS_12_DB;
+
+ case _NRF24L01P_RF_SETUP_RF_PWR_MINUS_18DBM:
+ return NRF24L01P_TX_PWR_MINUS_18_DB;
+
+ default:
+ error( "nRF24L01P: Unknown RF Output Power value %d\r\n", rfPwr );
+ return 0;
+
+ }
+}
+
+
+void nRF24L01P::setAirDataRate(int rate) {
+
+ int rfSetup = getRegister(_NRF24L01P_REG_RF_SETUP) & ~_NRF24L01P_RF_SETUP_RF_DR_MASK;
+
+ switch ( rate ) {
+
+ case NRF24L01P_DATARATE_250_KBPS:
+ rfSetup |= _NRF24L01P_RF_SETUP_RF_DR_250KBPS;
+ break;
+
+ case NRF24L01P_DATARATE_1_MBPS:
+ rfSetup |= _NRF24L01P_RF_SETUP_RF_DR_1MBPS;
+ break;
+
+ case NRF24L01P_DATARATE_2_MBPS:
+ rfSetup |= _NRF24L01P_RF_SETUP_RF_DR_2MBPS;
+ break;
+
+ default:
+ error( "nRF24L01P: Invalid Air Data Rate setting %d\r\n", rate );
+ return;
+
+ }
+
+ setRegister(_NRF24L01P_REG_RF_SETUP, rfSetup);
+
+}
+
+
+int nRF24L01P::getAirDataRate(void) {
+
+ int rfDataRate = getRegister(_NRF24L01P_REG_RF_SETUP) & _NRF24L01P_RF_SETUP_RF_DR_MASK;
+
+ switch ( rfDataRate ) {
+
+ case _NRF24L01P_RF_SETUP_RF_DR_250KBPS:
+ return NRF24L01P_DATARATE_250_KBPS;
+
+ case _NRF24L01P_RF_SETUP_RF_DR_1MBPS:
+ return NRF24L01P_DATARATE_1_MBPS;
+
+ case _NRF24L01P_RF_SETUP_RF_DR_2MBPS:
+ return NRF24L01P_DATARATE_2_MBPS;
+
+ default:
+ error( "nRF24L01P: Unknown Air Data Rate value %d\r\n", rfDataRate );
+ return 0;
+
+ }
+}
+
+
+void nRF24L01P::setCrcWidth(int width) {
+
+ int config = getRegister(_NRF24L01P_REG_CONFIG) & ~_NRF24L01P_CONFIG_CRC_MASK;
+
+ switch ( width ) {
+
+ case NRF24L01P_CRC_NONE:
+ config |= _NRF24L01P_CONFIG_CRC_NONE;
+ break;
+
+ case NRF24L01P_CRC_8_BIT:
+ config |= _NRF24L01P_CONFIG_CRC_8BIT;
+ break;
+
+ case NRF24L01P_CRC_16_BIT:
+ config |= _NRF24L01P_CONFIG_CRC_16BIT;
+ break;
+
+ default:
+ error( "nRF24L01P: Invalid CRC Width setting %d\r\n", width );
+ return;
+
+ }
+
+ setRegister(_NRF24L01P_REG_CONFIG, config);
+
+}
+
+
+int nRF24L01P::getCrcWidth(void) {
+
+ int crcWidth = getRegister(_NRF24L01P_REG_CONFIG) & _NRF24L01P_CONFIG_CRC_MASK;
+
+ switch ( crcWidth ) {
+
+ case _NRF24L01P_CONFIG_CRC_NONE:
+ return NRF24L01P_CRC_NONE;
+
+ case _NRF24L01P_CONFIG_CRC_8BIT:
+ return NRF24L01P_CRC_8_BIT;
+
+ case _NRF24L01P_CONFIG_CRC_16BIT:
+ return NRF24L01P_CRC_16_BIT;
+
+ default:
+ error( "nRF24L01P: Unknown CRC Width value %d\r\n", crcWidth );
+ return 0;
+
+ }
+}
+
+
+void nRF24L01P::setTransferSize(int size, int pipe) {
+
+ if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
+
+ error( "nRF24L01P: Invalid Transfer Size pipe number %d\r\n", pipe );
+ return;
+
+ }
+
+ if ( ( size < 0 ) || ( size > _NRF24L01P_RX_FIFO_SIZE ) ) {
+
+ error( "nRF24L01P: Invalid Transfer Size setting %d\r\n", size );
+ return;
+
+ }
+
+ int rxPwPxRegister = _NRF24L01P_REG_RX_PW_P0 + ( pipe - NRF24L01P_PIPE_P0 );
+
+ setRegister(rxPwPxRegister, ( size & _NRF24L01P_RX_PW_Px_MASK ) );
+
+}
+
+
+int nRF24L01P::getTransferSize(int pipe) {
+
+ if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
+
+ error( "nRF24L01P: Invalid Transfer Size pipe number %d\r\n", pipe );
+ return 0;
+
+ }
+
+ int rxPwPxRegister = _NRF24L01P_REG_RX_PW_P0 + ( pipe - NRF24L01P_PIPE_P0 );
+
+ int size = getRegister(rxPwPxRegister);
+
+ return ( size & _NRF24L01P_RX_PW_Px_MASK );
+
+}
+
+
+void nRF24L01P::disableAllRxPipes(void) {
+
+ setRegister(_NRF24L01P_REG_EN_RXADDR, _NRF24L01P_EN_RXADDR_NONE);
+
+}
+
+
+void nRF24L01P::disableAutoAcknowledge(void) {
+
+ setRegister(_NRF24L01P_REG_EN_AA, _NRF24L01P_EN_AA_NONE);
+
+}
+
+
+void nRF24L01P::enableAutoAcknowledge(int pipe) {
+
+ if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
+
+ error( "nRF24L01P: Invalid Enable AutoAcknowledge pipe number %d\r\n", pipe );
+ return;
+
+ }
+
+ int enAA = getRegister(_NRF24L01P_REG_EN_AA);
+
+ enAA |= ( 1 << (pipe - NRF24L01P_PIPE_P0) );
+
+ setRegister(_NRF24L01P_REG_EN_AA, enAA);
+
+}
+
+
+void nRF24L01P::disableAutoRetransmit(void) {
+
+ setRegister(_NRF24L01P_REG_SETUP_RETR, _NRF24L01P_SETUP_RETR_NONE);
+
+}
+
+void nRF24L01P::setRxAddress(unsigned long long address, int width, int pipe) {
+
+ if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
+
+ error( "nRF24L01P: Invalid setRxAddress pipe number %d\r\n", pipe );
+ return;
+
+ }
+
+ if ( ( pipe == NRF24L01P_PIPE_P0 ) || ( pipe == NRF24L01P_PIPE_P1 ) ) {
+
+ int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & ~_NRF24L01P_SETUP_AW_AW_MASK;
+
+ switch ( width ) {
+
+ case 3:
+ setupAw |= _NRF24L01P_SETUP_AW_AW_3BYTE;
+ break;
+
+ case 4:
+ setupAw |= _NRF24L01P_SETUP_AW_AW_4BYTE;
+ break;
+
+ case 5:
+ setupAw |= _NRF24L01P_SETUP_AW_AW_5BYTE;
+ break;
+
+ default:
+ error( "nRF24L01P: Invalid setRxAddress width setting %d\r\n", width );
+ return;
+
+ }
+
+ setRegister(_NRF24L01P_REG_SETUP_AW, setupAw);
+
+ } else {
+
+ width = 1;
+
+ }
+
+ int rxAddrPxRegister = _NRF24L01P_REG_RX_ADDR_P0 + ( pipe - NRF24L01P_PIPE_P0 );
+
+ int cn = (_NRF24L01P_SPI_CMD_WR_REG | (rxAddrPxRegister & _NRF24L01P_REG_ADDRESS_MASK));
+
+ nCS_ = 0;
+
+ int status = spi_.write(cn);
+
+ while ( width-- > 0 ) {
+
+ //
+ // LSByte first
+ //
+ spi_.write((int) (address & 0xFF));
+ address >>= 8;
+
+ }
+
+ nCS_ = 1;
+
+ int enRxAddr = getRegister(_NRF24L01P_REG_EN_RXADDR);
+
+ enRxAddr |= (1 << ( pipe - NRF24L01P_PIPE_P0 ) );
+
+ setRegister(_NRF24L01P_REG_EN_RXADDR, enRxAddr);
+}
+
+/*
+ * This version of setRxAddress is just a wrapper for the version that takes 'long long's,
+ * in case the main code doesn't want to deal with long long's.
+ */
+void nRF24L01P::setRxAddress(unsigned long msb_address, unsigned long lsb_address, int width, int pipe) {
+
+ unsigned long long address = ( ( (unsigned long long) msb_address ) << 32 ) | ( ( (unsigned long long) lsb_address ) << 0 );
+
+ setRxAddress(address, width, pipe);
+
+}
+
+
+/*
+ * This version of setTxAddress is just a wrapper for the version that takes 'long long's,
+ * in case the main code doesn't want to deal with long long's.
+ */
+void nRF24L01P::setTxAddress(unsigned long msb_address, unsigned long lsb_address, int width) {
+
+ unsigned long long address = ( ( (unsigned long long) msb_address ) << 32 ) | ( ( (unsigned long long) lsb_address ) << 0 );
+
+ setTxAddress(address, width);
+
+}
+
+
+void nRF24L01P::setTxAddress(unsigned long long address, int width) {
+
+ int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & ~_NRF24L01P_SETUP_AW_AW_MASK;
+
+ switch ( width ) {
+
+ case 3:
+ setupAw |= _NRF24L01P_SETUP_AW_AW_3BYTE;
+ break;
+
+ case 4:
+ setupAw |= _NRF24L01P_SETUP_AW_AW_4BYTE;
+ break;
+
+ case 5:
+ setupAw |= _NRF24L01P_SETUP_AW_AW_5BYTE;
+ break;
+
+ default:
+ error( "nRF24L01P: Invalid setTxAddress width setting %d\r\n", width );
+ return;
+
+ }
+
+ setRegister(_NRF24L01P_REG_SETUP_AW, setupAw);
+
+ int cn = (_NRF24L01P_SPI_CMD_WR_REG | (_NRF24L01P_REG_TX_ADDR & _NRF24L01P_REG_ADDRESS_MASK));
+
+ nCS_ = 0;
+
+ int status = spi_.write(cn);
+
+ while ( width-- > 0 ) {
+
+ //
+ // LSByte first
+ //
+ spi_.write((int) (address & 0xFF));
+ address >>= 8;
+
+ }
+
+ nCS_ = 1;
+
+}
+
+
+unsigned long long nRF24L01P::getRxAddress(int pipe) {
+
+ if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
+
+ error( "nRF24L01P: Invalid setRxAddress pipe number %d\r\n", pipe );
+ return 0;
+
+ }
+
+ int width;
+
+ if ( ( pipe == NRF24L01P_PIPE_P0 ) || ( pipe == NRF24L01P_PIPE_P1 ) ) {
+
+ int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & _NRF24L01P_SETUP_AW_AW_MASK;
+
+ switch ( setupAw ) {
+
+ case _NRF24L01P_SETUP_AW_AW_3BYTE:
+ width = 3;
+ break;
+
+ case _NRF24L01P_SETUP_AW_AW_4BYTE:
+ width = 4;
+ break;
+
+ case _NRF24L01P_SETUP_AW_AW_5BYTE:
+ width = 5;
+ break;
+
+ default:
+ error( "nRF24L01P: Unknown getRxAddress width value %d\r\n", setupAw );
+ return 0;
+
+ }
+
+ } else {
+
+ width = 1;
+
+ }
+
+ int rxAddrPxRegister = _NRF24L01P_REG_RX_ADDR_P0 + ( pipe - NRF24L01P_PIPE_P0 );
+
+ int cn = (_NRF24L01P_SPI_CMD_RD_REG | (rxAddrPxRegister & _NRF24L01P_REG_ADDRESS_MASK));
+
+ unsigned long long address = 0;
+
+ nCS_ = 0;
+
+ int status = spi_.write(cn);
+
+ for ( int i=0; i<width; i++ ) {
+
+ //
+ // LSByte first
+ //
+ address |= ( ( (unsigned long long)( spi_.write(_NRF24L01P_SPI_CMD_NOP) & 0xFF ) ) << (i*8) );
+
+ }
+
+ nCS_ = 1;
+
+ if ( !( ( pipe == NRF24L01P_PIPE_P0 ) || ( pipe == NRF24L01P_PIPE_P1 ) ) ) {
+
+ address |= ( getRxAddress(NRF24L01P_PIPE_P1) & ~((unsigned long long) 0xFF) );
+
+ }
+
+ return address;
+
+}
+
+
+unsigned long long nRF24L01P::getTxAddress(void) {
+
+ int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & _NRF24L01P_SETUP_AW_AW_MASK;
+
+ int width;
+
+ switch ( setupAw ) {
+
+ case _NRF24L01P_SETUP_AW_AW_3BYTE:
+ width = 3;
+ break;
+
+ case _NRF24L01P_SETUP_AW_AW_4BYTE:
+ width = 4;
+ break;
+
+ case _NRF24L01P_SETUP_AW_AW_5BYTE:
+ width = 5;
+ break;
+
+ default:
+ error( "nRF24L01P: Unknown getTxAddress width value %d\r\n", setupAw );
+ return 0;
+
+ }
+
+ int cn = (_NRF24L01P_SPI_CMD_RD_REG | (_NRF24L01P_REG_TX_ADDR & _NRF24L01P_REG_ADDRESS_MASK));
+
+ unsigned long long address = 0;
+
+ nCS_ = 0;
+
+ int status = spi_.write(cn);
+
+ for ( int i=0; i<width; i++ ) {
+
+ //
+ // LSByte first
+ //
+ address |= ( ( (unsigned long long)( spi_.write(_NRF24L01P_SPI_CMD_NOP) & 0xFF ) ) << (i*8) );
+
+ }
+
+ nCS_ = 1;
+
+ return address;
+}
+
+
+bool nRF24L01P::readable(int pipe) {
+
+ if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
+
+ error( "nRF24L01P: Invalid readable pipe number %d\r\n", pipe );
+ return false;
+
+ }
+
+ int status = getStatusRegister();
+
+ return ( ( status & _NRF24L01P_STATUS_RX_DR ) && ( ( ( status & _NRF24L01P_STATUS_RX_P_NO ) >> 1 ) == ( pipe & 0x7 ) ) );
+
+}
+
+
+int nRF24L01P::write(int pipe, char *data, int count) {
+
+ // Note: the pipe number is ignored in a Transmit / write
+
+ //
+ // Save the CE state
+ //
+ int originalCe = ce_;
+ disable();
+
+ if ( count <= 0 ) return 0;
+
+ if ( count > _NRF24L01P_TX_FIFO_SIZE ) count = _NRF24L01P_TX_FIFO_SIZE;
+
+ // Clear the Status bit
+ setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_TX_DS);
+
+ nCS_ = 0;
+ int status = spi_.write(_NRF24L01P_SPI_CMD_WR_TX_PAYLOAD);
+ //int status = spi_.write(_NRF24L01P_SPI_CMD_W_ACK_PAYLOAD);
+ for ( int i = 0; i < count; i++ ) {
+
+ spi_.write(*data++);
+
+ }
+
+ nCS_ = 1;
+
+ int originalMode = mode;
+ setTransmitMode();
+
+ enable();
+ wait_us(_NRF24L01P_TIMING_Thce_us);
+ disable();
+
+ while ( !( getStatusRegister() & _NRF24L01P_STATUS_TX_DS ) ) {
+
+ // Wait for the transfer to complete
+
+ }
+
+ // Clear the Status bit
+ setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_TX_DS);
+
+ if ( originalMode == _NRF24L01P_MODE_RX ) {
+
+ setReceiveMode();
+
+ }
+
+ ce_ = originalCe;
+ wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
+
+ return count;
+
+}
+
+
+int nRF24L01P::read(int pipe, char *data, int count) {
+
+ if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
+
+ error( "nRF24L01P: Invalid read pipe number %d\r\n", pipe );
+ return -1;
+
+ }
+
+ if ( count <= 0 ) return 0;
+
+ if ( count > _NRF24L01P_RX_FIFO_SIZE ) count = _NRF24L01P_RX_FIFO_SIZE;
+
+ if ( readable(pipe) ) {
+
+ nCS_ = 0;
+
+ int status = spi_.write(_NRF24L01P_SPI_CMD_R_RX_PL_WID);
+
+ int rxPayloadWidth = spi_.write(_NRF24L01P_SPI_CMD_NOP);
+
+ nCS_ = 1;
+
+ if ( ( rxPayloadWidth < 0 ) || ( rxPayloadWidth > _NRF24L01P_RX_FIFO_SIZE ) ) {
+
+ // Received payload error: need to flush the FIFO
+
+ nCS_ = 0;
+
+ int status = spi_.write(_NRF24L01P_SPI_CMD_FLUSH_RX);
+
+ int rxPayloadWidth = spi_.write(_NRF24L01P_SPI_CMD_NOP);
+
+ nCS_ = 1;
+
+ //
+ // At this point, we should retry the reception,
+ // but for now we'll just fall through...
+ //
+
+ } else {
+
+ if ( rxPayloadWidth < count ) count = rxPayloadWidth;
+
+ nCS_ = 0;
+
+ int status = spi_.write(_NRF24L01P_SPI_CMD_RD_RX_PAYLOAD);
+
+ for ( int i = 0; i < count; i++ ) {
+
+ *data++ = spi_.write(_NRF24L01P_SPI_CMD_NOP);
+
+ }
+
+ nCS_ = 1;
+
+ // Clear the Status bit
+ setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_RX_DR);
+
+ return count;
+
+ }
+
+ } else {
+
+ //
+ // What should we do if there is no 'readable' data?
+ // We could wait for data to arrive, but for now, we'll
+ // just return with no data.
+ //
+ return 0;
+
+ }
+
+ //
+ // We get here because an error condition occured;
+ // We could wait for data to arrive, but for now, we'll
+ // just return with no data.
+ //
+ return -1;
+
+}
+
+
+void nRF24L01P::enableAutoRetransmit(int delay, int count) {
+ if(count > 15) {
+ count = 15;
+ }
+ if((0!=(delay % 250)) || (delay > 4000)) {
+ return;
+ }
+
+ setRegister(_NRF24L01P_REG_SETUP_RETR, 0x4A);
+}
+
+
+void nRF24L01P::setRegister(int regAddress, int regData) {
+
+ //
+ // Save the CE state
+ //
+ int originalCe = ce_;
+ disable();
+
+ int cn = (_NRF24L01P_SPI_CMD_WR_REG | (regAddress & _NRF24L01P_REG_ADDRESS_MASK));
+
+ nCS_ = 0;
+
+ int status = spi_.write(cn);
+
+ spi_.write(regData & 0xFF);
+
+ nCS_ = 1;
+
+ ce_ = originalCe;
+ wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
+
+}
+
+
+int nRF24L01P::getRegister(int regAddress) {
+
+ int cn = (_NRF24L01P_SPI_CMD_RD_REG | (regAddress & _NRF24L01P_REG_ADDRESS_MASK));
+
+ nCS_ = 0;
+
+ int status = spi_.write(cn);
+
+ int dn = spi_.write(_NRF24L01P_SPI_CMD_NOP);
+
+ nCS_ = 1;
+
+ return dn;
+
+}
+
+int nRF24L01P::getStatusRegister(void) {
+
+ nCS_ = 0;
+
+ int status = spi_.write(_NRF24L01P_SPI_CMD_NOP);
+
+ nCS_ = 1;
+
+ return status;
+
+}
diff -r 209f4db62daf -r 88ba5138f810 nRF24L01P.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF24L01P.h Fri Apr 29 15:27:26 2016 +0000
@@ -0,0 +1,347 @@
+/**
+ * @file nRF24L01P.h
+ *
+ * @author Owen Edwards
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2010 Owen Edwards
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * @section DESCRIPTION
+ *
+ * nRF24L01+ Single Chip 2.4GHz Transceiver from Nordic Semiconductor.
+ *
+ * Datasheet:
+ *
+ * http://www.nordicsemi.no/files/Product/data_sheet/nRF24L01P_Product_Specification_1_0.pdf
+ */
+
+#ifndef __NRF24L01P_H__
+#define __NRF24L01P_H__
+
+/**
+ * Includes
+ */
+#include "mbed.h"
+
+/**
+ * Defines
+ */
+#define NRF24L01P_TX_PWR_ZERO_DB 0
+#define NRF24L01P_TX_PWR_MINUS_6_DB -6
+#define NRF24L01P_TX_PWR_MINUS_12_DB -12
+#define NRF24L01P_TX_PWR_MINUS_18_DB -18
+
+#define NRF24L01P_DATARATE_250_KBPS 250
+#define NRF24L01P_DATARATE_1_MBPS 1000
+#define NRF24L01P_DATARATE_2_MBPS 2000
+
+#define NRF24L01P_CRC_NONE 0
+#define NRF24L01P_CRC_8_BIT 8
+#define NRF24L01P_CRC_16_BIT 16
+
+#define NRF24L01P_MIN_RF_FREQUENCY 2400
+#define NRF24L01P_MAX_RF_FREQUENCY 2525
+
+#define NRF24L01P_PIPE_P0 0
+#define NRF24L01P_PIPE_P1 1
+#define NRF24L01P_PIPE_P2 2
+#define NRF24L01P_PIPE_P3 3
+#define NRF24L01P_PIPE_P4 4
+#define NRF24L01P_PIPE_P5 5
+
+/**
+* Default setup for the nRF24L01+, based on the Sparkfun "Nordic Serial Interface Board"
+* for evaluation (http://www.sparkfun.com/products/9019)
+*/
+#define DEFAULT_NRF24L01P_ADDRESS ((unsigned long long) 0xE7E7E7E7E7 )
+#define DEFAULT_NRF24L01P_ADDRESS_WIDTH 5
+#define DEFAULT_NRF24L01P_CRC NRF24L01P_CRC_8_BIT
+#define DEFAULT_NRF24L01P_RF_FREQUENCY (NRF24L01P_MIN_RF_FREQUENCY + 2)
+#define DEFAULT_NRF24L01P_DATARATE NRF24L01P_DATARATE_1_MBPS
+#define DEFAULT_NRF24L01P_TX_PWR NRF24L01P_TX_PWR_ZERO_DB
+#define DEFAULT_NRF24L01P_TRANSFER_SIZE 4
+
+/**
+ * nRF24L01+ Single Chip 2.4GHz Transceiver from Nordic Semiconductor.
+ */
+class nRF24L01P {
+
+public:
+
+ /**
+ * Constructor.
+ *
+ * @param mosi mbed pin to use for MOSI line of SPI interface.
+ * @param miso mbed pin to use for MISO line of SPI interface.
+ * @param sck mbed pin to use for SCK line of SPI interface.
+ * @param csn mbed pin to use for not chip select line of SPI interface.
+ * @param ce mbed pin to use for the chip enable line.
+ * @param irq mbed pin to use for the interrupt request line.
+ */
+ nRF24L01P(PinName mosi, PinName miso, PinName sck, PinName csn, PinName ce, PinName irq = NC);
+
+ /**
+ * Set the RF frequency.
+ *
+ * @param frequency the frequency of RF transmission in MHz (2400..2525).
+ */
+ void setRfFrequency(int frequency = DEFAULT_NRF24L01P_RF_FREQUENCY);
+
+ /**
+ * Get the RF frequency.
+ *
+ * @return the frequency of RF transmission in MHz (2400..2525).
+ */
+ int getRfFrequency(void);
+
+ /**
+ * Set the RF output power.
+ *
+ * @param power the RF output power in dBm (0, -6, -12 or -18).
+ */
+ void setRfOutputPower(int power = DEFAULT_NRF24L01P_TX_PWR);
+
+ /**
+ * Get the RF output power.
+ *
+ * @return the RF output power in dBm (0, -6, -12 or -18).
+ */
+ int getRfOutputPower(void);
+
+ /**
+ * Set the Air data rate.
+ *
+ * @param rate the air data rate in kbps (250, 1M or 2M).
+ */
+ void setAirDataRate(int rate = DEFAULT_NRF24L01P_DATARATE);
+
+ /**
+ * Get the Air data rate.
+ *
+ * @return the air data rate in kbps (250, 1M or 2M).
+ */
+ int getAirDataRate(void);
+
+ /**
+ * Set the CRC width.
+ *
+ * @param width the number of bits for the CRC (0, 8 or 16).
+ */
+ void setCrcWidth(int width = DEFAULT_NRF24L01P_CRC);
+
+ /**
+ * Get the CRC width.
+ *
+ * @return the number of bits for the CRC (0, 8 or 16).
+ */
+ int getCrcWidth(void);
+
+ /**
+ * Set the Receive address.
+ *
+ * @param address address associated with the particular pipe
+ * @param width width of the address in bytes (3..5)
+ * @param pipe pipe to associate the address with (0..5, default 0)
+ *
+ * Note that Pipes 0 & 1 have 3, 4 or 5 byte addresses,
+ * while Pipes 2..5 only use the lowest byte (bits 7..0) of the
+ * address provided here, and use 2, 3 or 4 bytes from Pipe 1's address.
+ * The width parameter is ignored for Pipes 2..5.
+ */
+ void setRxAddress(unsigned long long address = DEFAULT_NRF24L01P_ADDRESS, int width = DEFAULT_NRF24L01P_ADDRESS_WIDTH, int pipe = NRF24L01P_PIPE_P0);
+
+ void setRxAddress(unsigned long msb_address, unsigned long lsb_address, int width, int pipe = NRF24L01P_PIPE_P0);
+
+ /**
+ * Set the Transmit address.
+ *
+ * @param address address for transmission
+ * @param width width of the address in bytes (3..5)
+ *
+ * Note that the address width is shared with the Receive pipes,
+ * so a change to that address width affect transmissions.
+ */
+ void setTxAddress(unsigned long long address = DEFAULT_NRF24L01P_ADDRESS, int width = DEFAULT_NRF24L01P_ADDRESS_WIDTH);
+
+ void setTxAddress(unsigned long msb_address, unsigned long lsb_address, int width);
+
+ /**
+ * Get the Receive address.
+ *
+ * @param pipe pipe to get the address from (0..5, default 0)
+ * @return the address associated with the particular pipe
+ */
+ unsigned long long getRxAddress(int pipe = NRF24L01P_PIPE_P0);
+
+ /**
+ * Get the Transmit address.
+ *
+ * @return address address for transmission
+ */
+ unsigned long long getTxAddress(void);
+
+ /**
+ * Set the transfer size.
+ *
+ * @param size the size of the transfer, in bytes (1..32)
+ * @param pipe pipe for the transfer (0..5, default 0)
+ */
+ void setTransferSize(int size = DEFAULT_NRF24L01P_TRANSFER_SIZE, int pipe = NRF24L01P_PIPE_P0);
+
+ /**
+ * Get the transfer size.
+ *
+ * @return the size of the transfer, in bytes (1..32).
+ */
+ int getTransferSize(int pipe = NRF24L01P_PIPE_P0);
+
+
+ /**
+ * Get the RPD (Received Power Detector) state.
+ *
+ * @return true if the received power exceeded -64dBm
+ */
+ bool getRPD(void);
+
+ /**
+ * Put the nRF24L01+ into Receive mode
+ */
+ void setReceiveMode(void);
+
+ /**
+ * Put the nRF24L01+ into Transmit mode
+ */
+ void setTransmitMode(void);
+
+ /**
+ * Power up the nRF24L01+ into Standby mode
+ */
+ void powerUp(void);
+
+ /**
+ * Power down the nRF24L01+ into Power Down mode
+ */
+ void powerDown(void);
+
+ /**
+ * Enable the nRF24L01+ to Receive or Transmit (using the CE pin)
+ */
+ void enable(void);
+
+ /**
+ * Disable the nRF24L01+ to Receive or Transmit (using the CE pin)
+ */
+ void disable(void);
+
+ /**
+ * Transmit data
+ *
+ * @param pipe is ignored (included for consistency with file write routine)
+ * @param data pointer to an array of bytes to write
+ * @param count the number of bytes to send (1..32)
+ * @return the number of bytes actually written, or -1 for an error
+ */
+ int write(int pipe, char *data, int count);
+
+ /**
+ * Receive data
+ *
+ * @param pipe the receive pipe to get data from
+ * @param data pointer to an array of bytes to store the received data
+ * @param count the number of bytes to receive (1..32)
+ * @return the number of bytes actually received, 0 if none are received, or -1 for an error
+ */
+ int read(int pipe, char *data, int count);
+
+ /**
+ * Determine if there is data available to read
+ *
+ * @param pipe the receive pipe to check for data
+ * @return true if the is data waiting in the given pipe
+ */
+ bool readable(int pipe = NRF24L01P_PIPE_P0);
+
+ /**
+ * Disable all receive pipes
+ *
+ * Note: receive pipes are enabled when their address is set.
+ */
+ void disableAllRxPipes(void);
+
+ /**
+ * Disable AutoAcknowledge function
+ */
+ void disableAutoAcknowledge(void);
+
+ /**
+ * Enable AutoAcknowledge function
+ *
+ * @param pipe the receive pipe
+ */
+ void enableAutoAcknowledge(int pipe = NRF24L01P_PIPE_P0);
+
+ /**
+ * Disable AutoRetransmit function
+ */
+ void disableAutoRetransmit(void);
+
+ /**
+ * Enable AutoRetransmit function
+ *
+ * @param delay the delay between restransmits, in uS (250uS..4000uS)
+ * @param count number of retransmits before generating an error (1..15)
+ */
+ void enableAutoRetransmit(int delay, int count);
+
+private:
+
+ /**
+ * Get the contents of an addressable register.
+ *
+ * @param regAddress address of the register
+ * @return the contents of the register
+ */
+ int getRegister(int regAddress);
+
+ /**
+ * Set the contents of an addressable register.
+ *
+ * @param regAddress address of the register
+ * @param regData data to write to the register
+ */
+ void setRegister(int regAddress, int regData);
+
+ /**
+ * Get the contents of the status register.
+ *
+ * @return the contents of the status register
+ */
+ int getStatusRegister(void);
+
+ SPI spi_;
+ DigitalOut nCS_;
+ DigitalOut ce_;
+ InterruptIn nIRQ_;
+
+ int mode;
+
+};
+
+#endif /* __NRF24L01P_H__ */