Tomasz T / nRF24L01P

radio echo app

Dependents:   JNP3_IOT_6_RADIO_ECHO_FIXED2

nRF24L01P.cpp@3:3f6bf32d36c2, 2017-01-12 (annotated)

Committer:
jackmax
Date:
Thu Jan 12 12:22:06 2017 +0000
Revision:
3:3f6bf32d36c2
Parent:
2:3012f09dfcc2
Child:
5:92d0bd6eade7
Fixed bug: radio would be readable but read would return -1.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Owen 0:8ae48233b4e4 1 /**
Owen 0:8ae48233b4e4 2 * @file nRF24L01P.cpp
Owen 0:8ae48233b4e4 3 *
Owen 0:8ae48233b4e4 4 * @author Owen Edwards
Owen 0:8ae48233b4e4 5 *
Owen 0:8ae48233b4e4 6 * @section LICENSE
Owen 0:8ae48233b4e4 7 *
Owen 0:8ae48233b4e4 8 * Copyright (c) 2010 Owen Edwards
Owen 0:8ae48233b4e4 9 *
Owen 0:8ae48233b4e4 10 * This program is free software: you can redistribute it and/or modify
Owen 0:8ae48233b4e4 11 * it under the terms of the GNU General Public License as published by
Owen 0:8ae48233b4e4 12 * the Free Software Foundation, either version 3 of the License, or
Owen 0:8ae48233b4e4 13 * (at your option) any later version.
Owen 0:8ae48233b4e4 14 *
Owen 0:8ae48233b4e4 15 * This program is distributed in the hope that it will be useful,
Owen 0:8ae48233b4e4 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Owen 0:8ae48233b4e4 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Owen 0:8ae48233b4e4 18 * GNU General Public License for more details.
Owen 0:8ae48233b4e4 19 *
Owen 0:8ae48233b4e4 20 * You should have received a copy of the GNU General Public License
Owen 0:8ae48233b4e4 21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
Owen 0:8ae48233b4e4 22 *
Owen 0:8ae48233b4e4 23 * The above copyright notice and this permission notice shall be included in
Owen 0:8ae48233b4e4 24 * all copies or substantial portions of the Software.
Owen 0:8ae48233b4e4 25 *
Owen 0:8ae48233b4e4 26 * @section DESCRIPTION
Owen 0:8ae48233b4e4 27 *
Owen 0:8ae48233b4e4 28 * nRF24L01+ Single Chip 2.4GHz Transceiver from Nordic Semiconductor.
Owen 0:8ae48233b4e4 29 *
Owen 0:8ae48233b4e4 30 * Datasheet:
Owen 0:8ae48233b4e4 31 *
Owen 0:8ae48233b4e4 32 * http://www.nordicsemi.no/files/Product/data_sheet/nRF24L01P_Product_Specification_1_0.pdf
Owen 0:8ae48233b4e4 33 */
Owen 0:8ae48233b4e4 34
Owen 0:8ae48233b4e4 35 /**
Owen 0:8ae48233b4e4 36 * Includes
Owen 0:8ae48233b4e4 37 */
Owen 0:8ae48233b4e4 38 #include "nRF24L01P.h"
Owen 0:8ae48233b4e4 39
Owen 0:8ae48233b4e4 40 /**
Owen 0:8ae48233b4e4 41 * Defines
Owen 0:8ae48233b4e4 42 *
Owen 0:8ae48233b4e4 43 * (Note that all defines here start with an underscore, e.g. '_NRF24L01P_MODE_UNKNOWN',
Owen 0:8ae48233b4e4 44 * and are local to this library. The defines in the nRF24L01P.h file do not start
Owen 0:8ae48233b4e4 45 * with the underscore, and can be used by code to access this library.)
Owen 0:8ae48233b4e4 46 */
Owen 0:8ae48233b4e4 47
Owen 0:8ae48233b4e4 48 typedef enum {
Owen 0:8ae48233b4e4 49 _NRF24L01P_MODE_UNKNOWN,
Owen 0:8ae48233b4e4 50 _NRF24L01P_MODE_POWER_DOWN,
Owen 0:8ae48233b4e4 51 _NRF24L01P_MODE_STANDBY,
Owen 0:8ae48233b4e4 52 _NRF24L01P_MODE_RX,
Owen 0:8ae48233b4e4 53 _NRF24L01P_MODE_TX,
Owen 0:8ae48233b4e4 54 } nRF24L01P_Mode_Type;
Owen 0:8ae48233b4e4 55
Owen 0:8ae48233b4e4 56 /*
Owen 0:8ae48233b4e4 57 * The following FIFOs are present in nRF24L01+:
Owen 0:8ae48233b4e4 58 * TX three level, 32 byte FIFO
Owen 0:8ae48233b4e4 59 * RX three level, 32 byte FIFO
Owen 0:8ae48233b4e4 60 */
Owen 0:8ae48233b4e4 61 #define _NRF24L01P_TX_FIFO_COUNT 3
Owen 0:8ae48233b4e4 62 #define _NRF24L01P_RX_FIFO_COUNT 3
Owen 0:8ae48233b4e4 63
Owen 0:8ae48233b4e4 64 #define _NRF24L01P_TX_FIFO_SIZE 32
Owen 0:8ae48233b4e4 65 #define _NRF24L01P_RX_FIFO_SIZE 32
Owen 0:8ae48233b4e4 66
Owen 0:8ae48233b4e4 67 #define _NRF24L01P_SPI_MAX_DATA_RATE 10000000
Owen 0:8ae48233b4e4 68
Owen 0:8ae48233b4e4 69 #define _NRF24L01P_SPI_CMD_RD_REG 0x00
Owen 0:8ae48233b4e4 70 #define _NRF24L01P_SPI_CMD_WR_REG 0x20
Owen 0:8ae48233b4e4 71 #define _NRF24L01P_SPI_CMD_RD_RX_PAYLOAD 0x61
Owen 0:8ae48233b4e4 72 #define _NRF24L01P_SPI_CMD_WR_TX_PAYLOAD 0xa0
Owen 0:8ae48233b4e4 73 #define _NRF24L01P_SPI_CMD_FLUSH_TX 0xe1
Owen 0:8ae48233b4e4 74 #define _NRF24L01P_SPI_CMD_FLUSH_RX 0xe2
Owen 0:8ae48233b4e4 75 #define _NRF24L01P_SPI_CMD_REUSE_TX_PL 0xe3
Owen 0:8ae48233b4e4 76 #define _NRF24L01P_SPI_CMD_R_RX_PL_WID 0x60
Owen 0:8ae48233b4e4 77 #define _NRF24L01P_SPI_CMD_W_ACK_PAYLOAD 0xa8
Owen 0:8ae48233b4e4 78 #define _NRF24L01P_SPI_CMD_W_TX_PYLD_NO_ACK 0xb0
Owen 0:8ae48233b4e4 79 #define _NRF24L01P_SPI_CMD_NOP 0xff
Owen 0:8ae48233b4e4 80
Owen 0:8ae48233b4e4 81
Owen 0:8ae48233b4e4 82 #define _NRF24L01P_REG_CONFIG 0x00
Owen 0:8ae48233b4e4 83 #define _NRF24L01P_REG_EN_AA 0x01
Owen 0:8ae48233b4e4 84 #define _NRF24L01P_REG_EN_RXADDR 0x02
Owen 0:8ae48233b4e4 85 #define _NRF24L01P_REG_SETUP_AW 0x03
Owen 0:8ae48233b4e4 86 #define _NRF24L01P_REG_SETUP_RETR 0x04
Owen 0:8ae48233b4e4 87 #define _NRF24L01P_REG_RF_CH 0x05
Owen 0:8ae48233b4e4 88 #define _NRF24L01P_REG_RF_SETUP 0x06
Owen 0:8ae48233b4e4 89 #define _NRF24L01P_REG_STATUS 0x07
Owen 0:8ae48233b4e4 90 #define _NRF24L01P_REG_OBSERVE_TX 0x08
Owen 0:8ae48233b4e4 91 #define _NRF24L01P_REG_RPD 0x09
Owen 0:8ae48233b4e4 92 #define _NRF24L01P_REG_RX_ADDR_P0 0x0a
Owen 0:8ae48233b4e4 93 #define _NRF24L01P_REG_RX_ADDR_P1 0x0b
Owen 0:8ae48233b4e4 94 #define _NRF24L01P_REG_RX_ADDR_P2 0x0c
Owen 0:8ae48233b4e4 95 #define _NRF24L01P_REG_RX_ADDR_P3 0x0d
Owen 0:8ae48233b4e4 96 #define _NRF24L01P_REG_RX_ADDR_P4 0x0e
Owen 0:8ae48233b4e4 97 #define _NRF24L01P_REG_RX_ADDR_P5 0x0f
Owen 0:8ae48233b4e4 98 #define _NRF24L01P_REG_TX_ADDR 0x10
Owen 0:8ae48233b4e4 99 #define _NRF24L01P_REG_RX_PW_P0 0x11
Owen 0:8ae48233b4e4 100 #define _NRF24L01P_REG_RX_PW_P1 0x12
Owen 0:8ae48233b4e4 101 #define _NRF24L01P_REG_RX_PW_P2 0x13
Owen 0:8ae48233b4e4 102 #define _NRF24L01P_REG_RX_PW_P3 0x14
Owen 0:8ae48233b4e4 103 #define _NRF24L01P_REG_RX_PW_P4 0x15
Owen 0:8ae48233b4e4 104 #define _NRF24L01P_REG_RX_PW_P5 0x16
Owen 0:8ae48233b4e4 105 #define _NRF24L01P_REG_FIFO_STATUS 0x17
Owen 0:8ae48233b4e4 106 #define _NRF24L01P_REG_DYNPD 0x1c
Owen 0:8ae48233b4e4 107 #define _NRF24L01P_REG_FEATURE 0x1d
Owen 0:8ae48233b4e4 108
Owen 0:8ae48233b4e4 109 #define _NRF24L01P_REG_ADDRESS_MASK 0x1f
Owen 0:8ae48233b4e4 110
Owen 0:8ae48233b4e4 111 // CONFIG register:
Owen 0:8ae48233b4e4 112 #define _NRF24L01P_CONFIG_PRIM_RX (1<<0)
Owen 0:8ae48233b4e4 113 #define _NRF24L01P_CONFIG_PWR_UP (1<<1)
Owen 0:8ae48233b4e4 114 #define _NRF24L01P_CONFIG_CRC0 (1<<2)
Owen 0:8ae48233b4e4 115 #define _NRF24L01P_CONFIG_EN_CRC (1<<3)
Owen 0:8ae48233b4e4 116 #define _NRF24L01P_CONFIG_MASK_MAX_RT (1<<4)
Owen 0:8ae48233b4e4 117 #define _NRF24L01P_CONFIG_MASK_TX_DS (1<<5)
Owen 0:8ae48233b4e4 118 #define _NRF24L01P_CONFIG_MASK_RX_DR (1<<6)
Owen 0:8ae48233b4e4 119
Owen 0:8ae48233b4e4 120 #define _NRF24L01P_CONFIG_CRC_MASK (_NRF24L01P_CONFIG_EN_CRC|_NRF24L01P_CONFIG_CRC0)
Owen 0:8ae48233b4e4 121 #define _NRF24L01P_CONFIG_CRC_NONE (0)
Owen 0:8ae48233b4e4 122 #define _NRF24L01P_CONFIG_CRC_8BIT (_NRF24L01P_CONFIG_EN_CRC)
Owen 0:8ae48233b4e4 123 #define _NRF24L01P_CONFIG_CRC_16BIT (_NRF24L01P_CONFIG_EN_CRC|_NRF24L01P_CONFIG_CRC0)
Owen 0:8ae48233b4e4 124
Owen 0:8ae48233b4e4 125 // EN_AA register:
Owen 0:8ae48233b4e4 126 #define _NRF24L01P_EN_AA_NONE 0
Owen 0:8ae48233b4e4 127
Owen 0:8ae48233b4e4 128 // EN_RXADDR register:
Owen 0:8ae48233b4e4 129 #define _NRF24L01P_EN_RXADDR_NONE 0
Owen 0:8ae48233b4e4 130
Owen 0:8ae48233b4e4 131 // SETUP_AW register:
Owen 0:8ae48233b4e4 132 #define _NRF24L01P_SETUP_AW_AW_MASK (0x3<<0)
Owen 0:8ae48233b4e4 133 #define _NRF24L01P_SETUP_AW_AW_3BYTE (0x1<<0)
Owen 0:8ae48233b4e4 134 #define _NRF24L01P_SETUP_AW_AW_4BYTE (0x2<<0)
Owen 0:8ae48233b4e4 135 #define _NRF24L01P_SETUP_AW_AW_5BYTE (0x3<<0)
Owen 0:8ae48233b4e4 136
Owen 0:8ae48233b4e4 137 // SETUP_RETR register:
Owen 0:8ae48233b4e4 138 #define _NRF24L01P_SETUP_RETR_NONE 0
Owen 0:8ae48233b4e4 139
Owen 0:8ae48233b4e4 140 // RF_SETUP register:
Owen 0:8ae48233b4e4 141 #define _NRF24L01P_RF_SETUP_RF_PWR_MASK (0x3<<1)
Owen 0:8ae48233b4e4 142 #define _NRF24L01P_RF_SETUP_RF_PWR_0DBM (0x3<<1)
Owen 0:8ae48233b4e4 143 #define _NRF24L01P_RF_SETUP_RF_PWR_MINUS_6DBM (0x2<<1)
Owen 0:8ae48233b4e4 144 #define _NRF24L01P_RF_SETUP_RF_PWR_MINUS_12DBM (0x1<<1)
Owen 0:8ae48233b4e4 145 #define _NRF24L01P_RF_SETUP_RF_PWR_MINUS_18DBM (0x0<<1)
Owen 0:8ae48233b4e4 146
Owen 0:8ae48233b4e4 147 #define _NRF24L01P_RF_SETUP_RF_DR_HIGH_BIT (1 << 3)
Owen 0:8ae48233b4e4 148 #define _NRF24L01P_RF_SETUP_RF_DR_LOW_BIT (1 << 5)
Owen 0:8ae48233b4e4 149 #define _NRF24L01P_RF_SETUP_RF_DR_MASK (_NRF24L01P_RF_SETUP_RF_DR_LOW_BIT|_NRF24L01P_RF_SETUP_RF_DR_HIGH_BIT)
Owen 0:8ae48233b4e4 150 #define _NRF24L01P_RF_SETUP_RF_DR_250KBPS (_NRF24L01P_RF_SETUP_RF_DR_LOW_BIT)
Owen 0:8ae48233b4e4 151 #define _NRF24L01P_RF_SETUP_RF_DR_1MBPS (0)
Owen 0:8ae48233b4e4 152 #define _NRF24L01P_RF_SETUP_RF_DR_2MBPS (_NRF24L01P_RF_SETUP_RF_DR_HIGH_BIT)
Owen 0:8ae48233b4e4 153
Owen 0:8ae48233b4e4 154 // STATUS register:
Owen 0:8ae48233b4e4 155 #define _NRF24L01P_STATUS_TX_FULL (1<<0)
Owen 0:8ae48233b4e4 156 #define _NRF24L01P_STATUS_RX_P_NO (0x7<<1)
Owen 0:8ae48233b4e4 157 #define _NRF24L01P_STATUS_MAX_RT (1<<4)
Owen 0:8ae48233b4e4 158 #define _NRF24L01P_STATUS_TX_DS (1<<5)
Owen 0:8ae48233b4e4 159 #define _NRF24L01P_STATUS_RX_DR (1<<6)
Owen 0:8ae48233b4e4 160
Owen 0:8ae48233b4e4 161 // RX_PW_P0..RX_PW_P5 registers:
Owen 0:8ae48233b4e4 162 #define _NRF24L01P_RX_PW_Px_MASK 0x3F
Owen 0:8ae48233b4e4 163
Owen 0:8ae48233b4e4 164 #define _NRF24L01P_TIMING_Tundef2pd_us 100000 // 100mS
Owen 0:8ae48233b4e4 165 #define _NRF24L01P_TIMING_Tstby2a_us 130 // 130uS
Owen 0:8ae48233b4e4 166 #define _NRF24L01P_TIMING_Thce_us 10 // 10uS
Owen 0:8ae48233b4e4 167 #define _NRF24L01P_TIMING_Tpd2stby_us 4500 // 4.5mS worst case
Owen 0:8ae48233b4e4 168 #define _NRF24L01P_TIMING_Tpece2csn_us 4 // 4uS
Owen 0:8ae48233b4e4 169
Owen 0:8ae48233b4e4 170 /**
Owen 0:8ae48233b4e4 171 * Methods
Owen 0:8ae48233b4e4 172 */
Owen 0:8ae48233b4e4 173
Owen 0:8ae48233b4e4 174 nRF24L01P::nRF24L01P(PinName mosi,
Owen 0:8ae48233b4e4 175 PinName miso,
Owen 0:8ae48233b4e4 176 PinName sck,
Owen 0:8ae48233b4e4 177 PinName csn,
Owen 0:8ae48233b4e4 178 PinName ce,
Owen 0:8ae48233b4e4 179 PinName irq) : spi_(mosi, miso, sck), nCS_(csn), ce_(ce), nIRQ_(irq) {
Owen 0:8ae48233b4e4 180
Owen 0:8ae48233b4e4 181 mode = _NRF24L01P_MODE_UNKNOWN;
Owen 0:8ae48233b4e4 182
Owen 0:8ae48233b4e4 183 disable();
Owen 0:8ae48233b4e4 184
Owen 0:8ae48233b4e4 185 nCS_ = 1;
Owen 0:8ae48233b4e4 186
Owen 0:8ae48233b4e4 187 spi_.frequency(_NRF24L01P_SPI_MAX_DATA_RATE/5); // 2Mbit, 1/5th the maximum transfer rate for the SPI bus
Owen 0:8ae48233b4e4 188 spi_.format(8,0); // 8-bit, ClockPhase = 0, ClockPolarity = 0
Owen 0:8ae48233b4e4 189
Owen 0:8ae48233b4e4 190 wait_us(_NRF24L01P_TIMING_Tundef2pd_us); // Wait for Power-on reset
Owen 0:8ae48233b4e4 191
Owen 0:8ae48233b4e4 192 setRegister(_NRF24L01P_REG_CONFIG, 0); // Power Down
ttajmajer 2:3012f09dfcc2 193
ttajmajer 2:3012f09dfcc2 194 // Wait until the nRF24L01+ powers down
ttajmajer 2:3012f09dfcc2 195 wait_us( _NRF24L01P_TIMING_Tpd2stby_us ); // This *may* not be necessary (no timing is shown in the Datasheet), but just to be safe
Owen 0:8ae48233b4e4 196
Owen 0:8ae48233b4e4 197 setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_MAX_RT|_NRF24L01P_STATUS_TX_DS|_NRF24L01P_STATUS_RX_DR); // Clear any pending interrupts
ttajmajer 2:3012f09dfcc2 198
ttajmajer 2:3012f09dfcc2 199 //flush FIFO
ttajmajer 2:3012f09dfcc2 200 nCS_ = 0;
ttajmajer 2:3012f09dfcc2 201 spi_.write(_NRF24L01P_SPI_CMD_FLUSH_TX);
ttajmajer 2:3012f09dfcc2 202 nCS_ = 1;
ttajmajer 2:3012f09dfcc2 203 wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
ttajmajer 2:3012f09dfcc2 204 nCS_ = 0;
ttajmajer 2:3012f09dfcc2 205 spi_.write(_NRF24L01P_SPI_CMD_FLUSH_RX);
ttajmajer 2:3012f09dfcc2 206 nCS_ = 1;
ttajmajer 2:3012f09dfcc2 207 wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
ttajmajer 2:3012f09dfcc2 208
Owen 0:8ae48233b4e4 209
Owen 0:8ae48233b4e4 210 //
Owen 0:8ae48233b4e4 211 // Setup default configuration
Owen 0:8ae48233b4e4 212 //
Owen 0:8ae48233b4e4 213 disableAllRxPipes();
Owen 0:8ae48233b4e4 214 setRfFrequency();
Owen 0:8ae48233b4e4 215 setRfOutputPower();
Owen 0:8ae48233b4e4 216 setAirDataRate();
Owen 0:8ae48233b4e4 217 setCrcWidth();
Owen 0:8ae48233b4e4 218 setTxAddress();
Owen 0:8ae48233b4e4 219 setRxAddress();
Owen 0:8ae48233b4e4 220 disableAutoAcknowledge();
Owen 0:8ae48233b4e4 221 disableAutoRetransmit();
Owen 0:8ae48233b4e4 222 setTransferSize();
Owen 0:8ae48233b4e4 223
Owen 0:8ae48233b4e4 224 mode = _NRF24L01P_MODE_POWER_DOWN;
Owen 0:8ae48233b4e4 225
Owen 0:8ae48233b4e4 226 }
Owen 0:8ae48233b4e4 227
Owen 0:8ae48233b4e4 228
Owen 0:8ae48233b4e4 229 void nRF24L01P::powerUp(void) {
Owen 0:8ae48233b4e4 230
Owen 0:8ae48233b4e4 231 int config = getRegister(_NRF24L01P_REG_CONFIG);
Owen 0:8ae48233b4e4 232
Owen 0:8ae48233b4e4 233 config |= _NRF24L01P_CONFIG_PWR_UP;
Owen 0:8ae48233b4e4 234
Owen 0:8ae48233b4e4 235 setRegister(_NRF24L01P_REG_CONFIG, config);
Owen 0:8ae48233b4e4 236
Owen 0:8ae48233b4e4 237 // Wait until the nRF24L01+ powers up
Owen 0:8ae48233b4e4 238 wait_us( _NRF24L01P_TIMING_Tpd2stby_us );
Owen 0:8ae48233b4e4 239
Owen 0:8ae48233b4e4 240 mode = _NRF24L01P_MODE_STANDBY;
Owen 0:8ae48233b4e4 241
Owen 0:8ae48233b4e4 242 }
Owen 0:8ae48233b4e4 243
Owen 0:8ae48233b4e4 244
Owen 0:8ae48233b4e4 245 void nRF24L01P::powerDown(void) {
Owen 0:8ae48233b4e4 246
Owen 0:8ae48233b4e4 247 int config = getRegister(_NRF24L01P_REG_CONFIG);
Owen 0:8ae48233b4e4 248
Owen 0:8ae48233b4e4 249 config &= ~_NRF24L01P_CONFIG_PWR_UP;
Owen 0:8ae48233b4e4 250
Owen 0:8ae48233b4e4 251 setRegister(_NRF24L01P_REG_CONFIG, config);
Owen 0:8ae48233b4e4 252
Owen 0:8ae48233b4e4 253 // Wait until the nRF24L01+ powers down
Owen 0:8ae48233b4e4 254 wait_us( _NRF24L01P_TIMING_Tpd2stby_us ); // This *may* not be necessary (no timing is shown in the Datasheet), but just to be safe
Owen 0:8ae48233b4e4 255
Owen 0:8ae48233b4e4 256 mode = _NRF24L01P_MODE_POWER_DOWN;
Owen 0:8ae48233b4e4 257
Owen 0:8ae48233b4e4 258 }
Owen 0:8ae48233b4e4 259
Owen 0:8ae48233b4e4 260
Owen 0:8ae48233b4e4 261 void nRF24L01P::setReceiveMode(void) {
Owen 0:8ae48233b4e4 262
Owen 0:8ae48233b4e4 263 if ( _NRF24L01P_MODE_POWER_DOWN == mode ) powerUp();
Owen 0:8ae48233b4e4 264
Owen 0:8ae48233b4e4 265 int config = getRegister(_NRF24L01P_REG_CONFIG);
Owen 0:8ae48233b4e4 266
Owen 0:8ae48233b4e4 267 config |= _NRF24L01P_CONFIG_PRIM_RX;
Owen 0:8ae48233b4e4 268
Owen 0:8ae48233b4e4 269 setRegister(_NRF24L01P_REG_CONFIG, config);
Owen 0:8ae48233b4e4 270
Owen 0:8ae48233b4e4 271 mode = _NRF24L01P_MODE_RX;
Owen 0:8ae48233b4e4 272
Owen 0:8ae48233b4e4 273 }
Owen 0:8ae48233b4e4 274
Owen 0:8ae48233b4e4 275
Owen 0:8ae48233b4e4 276 void nRF24L01P::setTransmitMode(void) {
Owen 0:8ae48233b4e4 277
Owen 0:8ae48233b4e4 278 if ( _NRF24L01P_MODE_POWER_DOWN == mode ) powerUp();
Owen 0:8ae48233b4e4 279
Owen 0:8ae48233b4e4 280 int config = getRegister(_NRF24L01P_REG_CONFIG);
Owen 0:8ae48233b4e4 281
Owen 0:8ae48233b4e4 282 config &= ~_NRF24L01P_CONFIG_PRIM_RX;
Owen 0:8ae48233b4e4 283
Owen 0:8ae48233b4e4 284 setRegister(_NRF24L01P_REG_CONFIG, config);
Owen 0:8ae48233b4e4 285
Owen 0:8ae48233b4e4 286 mode = _NRF24L01P_MODE_TX;
Owen 0:8ae48233b4e4 287
Owen 0:8ae48233b4e4 288 }
Owen 0:8ae48233b4e4 289
Owen 0:8ae48233b4e4 290
Owen 0:8ae48233b4e4 291 void nRF24L01P::enable(void) {
Owen 0:8ae48233b4e4 292
Owen 0:8ae48233b4e4 293 ce_ = 1;
Owen 0:8ae48233b4e4 294 wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
Owen 0:8ae48233b4e4 295
Owen 0:8ae48233b4e4 296 }
Owen 0:8ae48233b4e4 297
Owen 0:8ae48233b4e4 298
Owen 0:8ae48233b4e4 299 void nRF24L01P::disable(void) {
Owen 0:8ae48233b4e4 300
Owen 0:8ae48233b4e4 301 ce_ = 0;
Owen 0:8ae48233b4e4 302
Owen 0:8ae48233b4e4 303 }
Owen 0:8ae48233b4e4 304
Owen 0:8ae48233b4e4 305 void nRF24L01P::setRfFrequency(int frequency) {
Owen 0:8ae48233b4e4 306
Owen 0:8ae48233b4e4 307 if ( ( frequency < NRF24L01P_MIN_RF_FREQUENCY ) || ( frequency > NRF24L01P_MAX_RF_FREQUENCY ) ) {
Owen 0:8ae48233b4e4 308
Owen 0:8ae48233b4e4 309 error( "nRF24L01P: Invalid RF Frequency setting %d\r\n", frequency );
Owen 0:8ae48233b4e4 310 return;
Owen 0:8ae48233b4e4 311
Owen 0:8ae48233b4e4 312 }
Owen 0:8ae48233b4e4 313
Owen 0:8ae48233b4e4 314 int channel = ( frequency - NRF24L01P_MIN_RF_FREQUENCY ) & 0x7F;
Owen 0:8ae48233b4e4 315
Owen 0:8ae48233b4e4 316 setRegister(_NRF24L01P_REG_RF_CH, channel);
Owen 0:8ae48233b4e4 317
Owen 0:8ae48233b4e4 318 }
Owen 0:8ae48233b4e4 319
Owen 0:8ae48233b4e4 320
Owen 0:8ae48233b4e4 321 int nRF24L01P::getRfFrequency(void) {
Owen 0:8ae48233b4e4 322
Owen 0:8ae48233b4e4 323 int channel = getRegister(_NRF24L01P_REG_RF_CH) & 0x7F;
Owen 0:8ae48233b4e4 324
Owen 0:8ae48233b4e4 325 return ( channel + NRF24L01P_MIN_RF_FREQUENCY );
Owen 0:8ae48233b4e4 326
Owen 0:8ae48233b4e4 327 }
Owen 0:8ae48233b4e4 328
Owen 0:8ae48233b4e4 329
Owen 0:8ae48233b4e4 330 void nRF24L01P::setRfOutputPower(int power) {
Owen 0:8ae48233b4e4 331
Owen 0:8ae48233b4e4 332 int rfSetup = getRegister(_NRF24L01P_REG_RF_SETUP) & ~_NRF24L01P_RF_SETUP_RF_PWR_MASK;
Owen 0:8ae48233b4e4 333
Owen 0:8ae48233b4e4 334 switch ( power ) {
Owen 0:8ae48233b4e4 335
Owen 0:8ae48233b4e4 336 case NRF24L01P_TX_PWR_ZERO_DB:
Owen 0:8ae48233b4e4 337 rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_0DBM;
Owen 0:8ae48233b4e4 338 break;
Owen 0:8ae48233b4e4 339
Owen 0:8ae48233b4e4 340 case NRF24L01P_TX_PWR_MINUS_6_DB:
Owen 0:8ae48233b4e4 341 rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_MINUS_6DBM;
Owen 0:8ae48233b4e4 342 break;
Owen 0:8ae48233b4e4 343
Owen 0:8ae48233b4e4 344 case NRF24L01P_TX_PWR_MINUS_12_DB:
Owen 0:8ae48233b4e4 345 rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_MINUS_12DBM;
Owen 0:8ae48233b4e4 346 break;
Owen 0:8ae48233b4e4 347
Owen 0:8ae48233b4e4 348 case NRF24L01P_TX_PWR_MINUS_18_DB:
Owen 0:8ae48233b4e4 349 rfSetup |= _NRF24L01P_RF_SETUP_RF_PWR_MINUS_18DBM;
Owen 0:8ae48233b4e4 350 break;
Owen 0:8ae48233b4e4 351
Owen 0:8ae48233b4e4 352 default:
Owen 0:8ae48233b4e4 353 error( "nRF24L01P: Invalid RF Output Power setting %d\r\n", power );
Owen 0:8ae48233b4e4 354 return;
Owen 0:8ae48233b4e4 355
Owen 0:8ae48233b4e4 356 }
Owen 0:8ae48233b4e4 357
Owen 0:8ae48233b4e4 358 setRegister(_NRF24L01P_REG_RF_SETUP, rfSetup);
Owen 0:8ae48233b4e4 359
Owen 0:8ae48233b4e4 360 }
Owen 0:8ae48233b4e4 361
Owen 0:8ae48233b4e4 362
Owen 0:8ae48233b4e4 363 int nRF24L01P::getRfOutputPower(void) {
Owen 0:8ae48233b4e4 364
Owen 0:8ae48233b4e4 365 int rfPwr = getRegister(_NRF24L01P_REG_RF_SETUP) & _NRF24L01P_RF_SETUP_RF_PWR_MASK;
Owen 0:8ae48233b4e4 366
Owen 0:8ae48233b4e4 367 switch ( rfPwr ) {
Owen 0:8ae48233b4e4 368
Owen 0:8ae48233b4e4 369 case _NRF24L01P_RF_SETUP_RF_PWR_0DBM:
Owen 0:8ae48233b4e4 370 return NRF24L01P_TX_PWR_ZERO_DB;
Owen 0:8ae48233b4e4 371
Owen 0:8ae48233b4e4 372 case _NRF24L01P_RF_SETUP_RF_PWR_MINUS_6DBM:
Owen 0:8ae48233b4e4 373 return NRF24L01P_TX_PWR_MINUS_6_DB;
Owen 0:8ae48233b4e4 374
Owen 0:8ae48233b4e4 375 case _NRF24L01P_RF_SETUP_RF_PWR_MINUS_12DBM:
Owen 0:8ae48233b4e4 376 return NRF24L01P_TX_PWR_MINUS_12_DB;
Owen 0:8ae48233b4e4 377
Owen 0:8ae48233b4e4 378 case _NRF24L01P_RF_SETUP_RF_PWR_MINUS_18DBM:
Owen 0:8ae48233b4e4 379 return NRF24L01P_TX_PWR_MINUS_18_DB;
Owen 0:8ae48233b4e4 380
Owen 0:8ae48233b4e4 381 default:
Owen 0:8ae48233b4e4 382 error( "nRF24L01P: Unknown RF Output Power value %d\r\n", rfPwr );
Owen 0:8ae48233b4e4 383 return 0;
Owen 0:8ae48233b4e4 384
Owen 0:8ae48233b4e4 385 }
Owen 0:8ae48233b4e4 386 }
Owen 0:8ae48233b4e4 387
Owen 0:8ae48233b4e4 388
Owen 0:8ae48233b4e4 389 void nRF24L01P::setAirDataRate(int rate) {
Owen 0:8ae48233b4e4 390
Owen 0:8ae48233b4e4 391 int rfSetup = getRegister(_NRF24L01P_REG_RF_SETUP) & ~_NRF24L01P_RF_SETUP_RF_DR_MASK;
Owen 0:8ae48233b4e4 392
Owen 0:8ae48233b4e4 393 switch ( rate ) {
Owen 0:8ae48233b4e4 394
Owen 0:8ae48233b4e4 395 case NRF24L01P_DATARATE_250_KBPS:
Owen 0:8ae48233b4e4 396 rfSetup |= _NRF24L01P_RF_SETUP_RF_DR_250KBPS;
Owen 0:8ae48233b4e4 397 break;
Owen 0:8ae48233b4e4 398
Owen 0:8ae48233b4e4 399 case NRF24L01P_DATARATE_1_MBPS:
Owen 0:8ae48233b4e4 400 rfSetup |= _NRF24L01P_RF_SETUP_RF_DR_1MBPS;
Owen 0:8ae48233b4e4 401 break;
Owen 0:8ae48233b4e4 402
Owen 0:8ae48233b4e4 403 case NRF24L01P_DATARATE_2_MBPS:
Owen 0:8ae48233b4e4 404 rfSetup |= _NRF24L01P_RF_SETUP_RF_DR_2MBPS;
Owen 0:8ae48233b4e4 405 break;
Owen 0:8ae48233b4e4 406
Owen 0:8ae48233b4e4 407 default:
Owen 0:8ae48233b4e4 408 error( "nRF24L01P: Invalid Air Data Rate setting %d\r\n", rate );
Owen 0:8ae48233b4e4 409 return;
Owen 0:8ae48233b4e4 410
Owen 0:8ae48233b4e4 411 }
Owen 0:8ae48233b4e4 412
Owen 0:8ae48233b4e4 413 setRegister(_NRF24L01P_REG_RF_SETUP, rfSetup);
Owen 0:8ae48233b4e4 414
Owen 0:8ae48233b4e4 415 }
Owen 0:8ae48233b4e4 416
Owen 0:8ae48233b4e4 417
Owen 0:8ae48233b4e4 418 int nRF24L01P::getAirDataRate(void) {
Owen 0:8ae48233b4e4 419
Owen 0:8ae48233b4e4 420 int rfDataRate = getRegister(_NRF24L01P_REG_RF_SETUP) & _NRF24L01P_RF_SETUP_RF_DR_MASK;
Owen 0:8ae48233b4e4 421
Owen 0:8ae48233b4e4 422 switch ( rfDataRate ) {
Owen 0:8ae48233b4e4 423
Owen 0:8ae48233b4e4 424 case _NRF24L01P_RF_SETUP_RF_DR_250KBPS:
Owen 0:8ae48233b4e4 425 return NRF24L01P_DATARATE_250_KBPS;
Owen 0:8ae48233b4e4 426
Owen 0:8ae48233b4e4 427 case _NRF24L01P_RF_SETUP_RF_DR_1MBPS:
Owen 0:8ae48233b4e4 428 return NRF24L01P_DATARATE_1_MBPS;
Owen 0:8ae48233b4e4 429
Owen 0:8ae48233b4e4 430 case _NRF24L01P_RF_SETUP_RF_DR_2MBPS:
Owen 0:8ae48233b4e4 431 return NRF24L01P_DATARATE_2_MBPS;
Owen 0:8ae48233b4e4 432
Owen 0:8ae48233b4e4 433 default:
Owen 0:8ae48233b4e4 434 error( "nRF24L01P: Unknown Air Data Rate value %d\r\n", rfDataRate );
Owen 0:8ae48233b4e4 435 return 0;
Owen 0:8ae48233b4e4 436
Owen 0:8ae48233b4e4 437 }
Owen 0:8ae48233b4e4 438 }
Owen 0:8ae48233b4e4 439
Owen 0:8ae48233b4e4 440
Owen 0:8ae48233b4e4 441 void nRF24L01P::setCrcWidth(int width) {
Owen 0:8ae48233b4e4 442
Owen 0:8ae48233b4e4 443 int config = getRegister(_NRF24L01P_REG_CONFIG) & ~_NRF24L01P_CONFIG_CRC_MASK;
Owen 0:8ae48233b4e4 444
Owen 0:8ae48233b4e4 445 switch ( width ) {
Owen 0:8ae48233b4e4 446
Owen 0:8ae48233b4e4 447 case NRF24L01P_CRC_NONE:
Owen 0:8ae48233b4e4 448 config |= _NRF24L01P_CONFIG_CRC_NONE;
Owen 0:8ae48233b4e4 449 break;
Owen 0:8ae48233b4e4 450
Owen 0:8ae48233b4e4 451 case NRF24L01P_CRC_8_BIT:
Owen 0:8ae48233b4e4 452 config |= _NRF24L01P_CONFIG_CRC_8BIT;
Owen 0:8ae48233b4e4 453 break;
Owen 0:8ae48233b4e4 454
Owen 0:8ae48233b4e4 455 case NRF24L01P_CRC_16_BIT:
Owen 0:8ae48233b4e4 456 config |= _NRF24L01P_CONFIG_CRC_16BIT;
Owen 0:8ae48233b4e4 457 break;
Owen 0:8ae48233b4e4 458
Owen 0:8ae48233b4e4 459 default:
Owen 0:8ae48233b4e4 460 error( "nRF24L01P: Invalid CRC Width setting %d\r\n", width );
Owen 0:8ae48233b4e4 461 return;
Owen 0:8ae48233b4e4 462
Owen 0:8ae48233b4e4 463 }
Owen 0:8ae48233b4e4 464
Owen 0:8ae48233b4e4 465 setRegister(_NRF24L01P_REG_CONFIG, config);
Owen 0:8ae48233b4e4 466
Owen 0:8ae48233b4e4 467 }
Owen 0:8ae48233b4e4 468
Owen 0:8ae48233b4e4 469
Owen 0:8ae48233b4e4 470 int nRF24L01P::getCrcWidth(void) {
Owen 0:8ae48233b4e4 471
Owen 0:8ae48233b4e4 472 int crcWidth = getRegister(_NRF24L01P_REG_CONFIG) & _NRF24L01P_CONFIG_CRC_MASK;
Owen 0:8ae48233b4e4 473
Owen 0:8ae48233b4e4 474 switch ( crcWidth ) {
Owen 0:8ae48233b4e4 475
Owen 0:8ae48233b4e4 476 case _NRF24L01P_CONFIG_CRC_NONE:
Owen 0:8ae48233b4e4 477 return NRF24L01P_CRC_NONE;
Owen 0:8ae48233b4e4 478
Owen 0:8ae48233b4e4 479 case _NRF24L01P_CONFIG_CRC_8BIT:
Owen 0:8ae48233b4e4 480 return NRF24L01P_CRC_8_BIT;
Owen 0:8ae48233b4e4 481
Owen 0:8ae48233b4e4 482 case _NRF24L01P_CONFIG_CRC_16BIT:
Owen 0:8ae48233b4e4 483 return NRF24L01P_CRC_16_BIT;
Owen 0:8ae48233b4e4 484
Owen 0:8ae48233b4e4 485 default:
Owen 0:8ae48233b4e4 486 error( "nRF24L01P: Unknown CRC Width value %d\r\n", crcWidth );
Owen 0:8ae48233b4e4 487 return 0;
Owen 0:8ae48233b4e4 488
Owen 0:8ae48233b4e4 489 }
Owen 0:8ae48233b4e4 490 }
Owen 0:8ae48233b4e4 491
Owen 0:8ae48233b4e4 492
Owen 0:8ae48233b4e4 493 void nRF24L01P::setTransferSize(int size, int pipe) {
Owen 0:8ae48233b4e4 494
Owen 0:8ae48233b4e4 495 if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
Owen 0:8ae48233b4e4 496
Owen 0:8ae48233b4e4 497 error( "nRF24L01P: Invalid Transfer Size pipe number %d\r\n", pipe );
Owen 0:8ae48233b4e4 498 return;
Owen 0:8ae48233b4e4 499
Owen 0:8ae48233b4e4 500 }
Owen 0:8ae48233b4e4 501
Owen 0:8ae48233b4e4 502 if ( ( size < 0 ) || ( size > _NRF24L01P_RX_FIFO_SIZE ) ) {
Owen 0:8ae48233b4e4 503
Owen 0:8ae48233b4e4 504 error( "nRF24L01P: Invalid Transfer Size setting %d\r\n", size );
Owen 0:8ae48233b4e4 505 return;
Owen 0:8ae48233b4e4 506
Owen 0:8ae48233b4e4 507 }
Owen 0:8ae48233b4e4 508
Owen 0:8ae48233b4e4 509 int rxPwPxRegister = _NRF24L01P_REG_RX_PW_P0 + ( pipe - NRF24L01P_PIPE_P0 );
Owen 0:8ae48233b4e4 510
Owen 0:8ae48233b4e4 511 setRegister(rxPwPxRegister, ( size & _NRF24L01P_RX_PW_Px_MASK ) );
Owen 0:8ae48233b4e4 512
Owen 0:8ae48233b4e4 513 }
Owen 0:8ae48233b4e4 514
Owen 0:8ae48233b4e4 515
Owen 0:8ae48233b4e4 516 int nRF24L01P::getTransferSize(int pipe) {
Owen 0:8ae48233b4e4 517
Owen 0:8ae48233b4e4 518 if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
Owen 0:8ae48233b4e4 519
Owen 0:8ae48233b4e4 520 error( "nRF24L01P: Invalid Transfer Size pipe number %d\r\n", pipe );
Owen 0:8ae48233b4e4 521 return 0;
Owen 0:8ae48233b4e4 522
Owen 0:8ae48233b4e4 523 }
Owen 0:8ae48233b4e4 524
Owen 0:8ae48233b4e4 525 int rxPwPxRegister = _NRF24L01P_REG_RX_PW_P0 + ( pipe - NRF24L01P_PIPE_P0 );
Owen 0:8ae48233b4e4 526
Owen 0:8ae48233b4e4 527 int size = getRegister(rxPwPxRegister);
Owen 0:8ae48233b4e4 528
Owen 0:8ae48233b4e4 529 return ( size & _NRF24L01P_RX_PW_Px_MASK );
Owen 0:8ae48233b4e4 530
Owen 0:8ae48233b4e4 531 }
Owen 0:8ae48233b4e4 532
Owen 0:8ae48233b4e4 533
Owen 0:8ae48233b4e4 534 void nRF24L01P::disableAllRxPipes(void) {
Owen 0:8ae48233b4e4 535
Owen 0:8ae48233b4e4 536 setRegister(_NRF24L01P_REG_EN_RXADDR, _NRF24L01P_EN_RXADDR_NONE);
Owen 0:8ae48233b4e4 537
Owen 0:8ae48233b4e4 538 }
Owen 0:8ae48233b4e4 539
Owen 0:8ae48233b4e4 540
Owen 0:8ae48233b4e4 541 void nRF24L01P::disableAutoAcknowledge(void) {
Owen 0:8ae48233b4e4 542
Owen 0:8ae48233b4e4 543 setRegister(_NRF24L01P_REG_EN_AA, _NRF24L01P_EN_AA_NONE);
Owen 0:8ae48233b4e4 544
Owen 0:8ae48233b4e4 545 }
Owen 0:8ae48233b4e4 546
Owen 0:8ae48233b4e4 547
Owen 0:8ae48233b4e4 548 void nRF24L01P::enableAutoAcknowledge(int pipe) {
Owen 0:8ae48233b4e4 549
Owen 0:8ae48233b4e4 550 if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
Owen 0:8ae48233b4e4 551
Owen 0:8ae48233b4e4 552 error( "nRF24L01P: Invalid Enable AutoAcknowledge pipe number %d\r\n", pipe );
Owen 0:8ae48233b4e4 553 return;
Owen 0:8ae48233b4e4 554
Owen 0:8ae48233b4e4 555 }
Owen 0:8ae48233b4e4 556
Owen 0:8ae48233b4e4 557 int enAA = getRegister(_NRF24L01P_REG_EN_AA);
Owen 0:8ae48233b4e4 558
Owen 0:8ae48233b4e4 559 enAA |= ( 1 << (pipe - NRF24L01P_PIPE_P0) );
Owen 0:8ae48233b4e4 560
Owen 0:8ae48233b4e4 561 setRegister(_NRF24L01P_REG_EN_AA, enAA);
Owen 0:8ae48233b4e4 562
Owen 0:8ae48233b4e4 563 }
Owen 0:8ae48233b4e4 564
Owen 0:8ae48233b4e4 565
Owen 0:8ae48233b4e4 566 void nRF24L01P::disableAutoRetransmit(void) {
Owen 0:8ae48233b4e4 567
Owen 0:8ae48233b4e4 568 setRegister(_NRF24L01P_REG_SETUP_RETR, _NRF24L01P_SETUP_RETR_NONE);
Owen 0:8ae48233b4e4 569
Owen 0:8ae48233b4e4 570 }
Owen 0:8ae48233b4e4 571
ttajmajer 1:781a7eef8610 572 void nRF24L01P::enableAutoRetransmit(int delay, int count) {
ttajmajer 1:781a7eef8610 573 delay = (0x00F0 & (delay << 4));
ttajmajer 1:781a7eef8610 574 count = (0x000F & count);
ttajmajer 1:781a7eef8610 575
ttajmajer 1:781a7eef8610 576 setRegister(_NRF24L01P_REG_SETUP_RETR, delay|count);
ttajmajer 1:781a7eef8610 577
ttajmajer 1:781a7eef8610 578 }
ttajmajer 1:781a7eef8610 579
ttajmajer 1:781a7eef8610 580 int nRF24L01P::getRetrCount(){
ttajmajer 1:781a7eef8610 581 return getRegister(_NRF24L01P_REG_OBSERVE_TX) & 0x0F;
ttajmajer 1:781a7eef8610 582 }
ttajmajer 1:781a7eef8610 583
Owen 0:8ae48233b4e4 584 void nRF24L01P::setRxAddress(unsigned long long address, int width, int pipe) {
Owen 0:8ae48233b4e4 585
Owen 0:8ae48233b4e4 586 if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
Owen 0:8ae48233b4e4 587
Owen 0:8ae48233b4e4 588 error( "nRF24L01P: Invalid setRxAddress pipe number %d\r\n", pipe );
Owen 0:8ae48233b4e4 589 return;
Owen 0:8ae48233b4e4 590
Owen 0:8ae48233b4e4 591 }
Owen 0:8ae48233b4e4 592
Owen 0:8ae48233b4e4 593 if ( ( pipe == NRF24L01P_PIPE_P0 ) || ( pipe == NRF24L01P_PIPE_P1 ) ) {
Owen 0:8ae48233b4e4 594
Owen 0:8ae48233b4e4 595 int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & ~_NRF24L01P_SETUP_AW_AW_MASK;
Owen 0:8ae48233b4e4 596
Owen 0:8ae48233b4e4 597 switch ( width ) {
Owen 0:8ae48233b4e4 598
Owen 0:8ae48233b4e4 599 case 3:
Owen 0:8ae48233b4e4 600 setupAw |= _NRF24L01P_SETUP_AW_AW_3BYTE;
Owen 0:8ae48233b4e4 601 break;
Owen 0:8ae48233b4e4 602
Owen 0:8ae48233b4e4 603 case 4:
Owen 0:8ae48233b4e4 604 setupAw |= _NRF24L01P_SETUP_AW_AW_4BYTE;
Owen 0:8ae48233b4e4 605 break;
Owen 0:8ae48233b4e4 606
Owen 0:8ae48233b4e4 607 case 5:
Owen 0:8ae48233b4e4 608 setupAw |= _NRF24L01P_SETUP_AW_AW_5BYTE;
Owen 0:8ae48233b4e4 609 break;
Owen 0:8ae48233b4e4 610
Owen 0:8ae48233b4e4 611 default:
Owen 0:8ae48233b4e4 612 error( "nRF24L01P: Invalid setRxAddress width setting %d\r\n", width );
Owen 0:8ae48233b4e4 613 return;
Owen 0:8ae48233b4e4 614
Owen 0:8ae48233b4e4 615 }
Owen 0:8ae48233b4e4 616
Owen 0:8ae48233b4e4 617 setRegister(_NRF24L01P_REG_SETUP_AW, setupAw);
Owen 0:8ae48233b4e4 618
Owen 0:8ae48233b4e4 619 } else {
Owen 0:8ae48233b4e4 620
Owen 0:8ae48233b4e4 621 width = 1;
Owen 0:8ae48233b4e4 622
Owen 0:8ae48233b4e4 623 }
Owen 0:8ae48233b4e4 624
Owen 0:8ae48233b4e4 625 int rxAddrPxRegister = _NRF24L01P_REG_RX_ADDR_P0 + ( pipe - NRF24L01P_PIPE_P0 );
Owen 0:8ae48233b4e4 626
Owen 0:8ae48233b4e4 627 int cn = (_NRF24L01P_SPI_CMD_WR_REG | (rxAddrPxRegister & _NRF24L01P_REG_ADDRESS_MASK));
Owen 0:8ae48233b4e4 628
Owen 0:8ae48233b4e4 629 nCS_ = 0;
Owen 0:8ae48233b4e4 630
Owen 0:8ae48233b4e4 631 int status = spi_.write(cn);
Owen 0:8ae48233b4e4 632
Owen 0:8ae48233b4e4 633 while ( width-- > 0 ) {
Owen 0:8ae48233b4e4 634
Owen 0:8ae48233b4e4 635 //
Owen 0:8ae48233b4e4 636 // LSByte first
Owen 0:8ae48233b4e4 637 //
Owen 0:8ae48233b4e4 638 spi_.write((int) (address & 0xFF));
Owen 0:8ae48233b4e4 639 address >>= 8;
Owen 0:8ae48233b4e4 640
Owen 0:8ae48233b4e4 641 }
Owen 0:8ae48233b4e4 642
Owen 0:8ae48233b4e4 643 nCS_ = 1;
Owen 0:8ae48233b4e4 644
Owen 0:8ae48233b4e4 645 int enRxAddr = getRegister(_NRF24L01P_REG_EN_RXADDR);
Owen 0:8ae48233b4e4 646
Owen 0:8ae48233b4e4 647 enRxAddr |= (1 << ( pipe - NRF24L01P_PIPE_P0 ) );
Owen 0:8ae48233b4e4 648
Owen 0:8ae48233b4e4 649 setRegister(_NRF24L01P_REG_EN_RXADDR, enRxAddr);
Owen 0:8ae48233b4e4 650 }
Owen 0:8ae48233b4e4 651
Owen 0:8ae48233b4e4 652 /*
Owen 0:8ae48233b4e4 653 * This version of setRxAddress is just a wrapper for the version that takes 'long long's,
Owen 0:8ae48233b4e4 654 * in case the main code doesn't want to deal with long long's.
Owen 0:8ae48233b4e4 655 */
Owen 0:8ae48233b4e4 656 void nRF24L01P::setRxAddress(unsigned long msb_address, unsigned long lsb_address, int width, int pipe) {
Owen 0:8ae48233b4e4 657
Owen 0:8ae48233b4e4 658 unsigned long long address = ( ( (unsigned long long) msb_address ) << 32 ) | ( ( (unsigned long long) lsb_address ) << 0 );
Owen 0:8ae48233b4e4 659
Owen 0:8ae48233b4e4 660 setRxAddress(address, width, pipe);
Owen 0:8ae48233b4e4 661
Owen 0:8ae48233b4e4 662 }
Owen 0:8ae48233b4e4 663
Owen 0:8ae48233b4e4 664
Owen 0:8ae48233b4e4 665 /*
Owen 0:8ae48233b4e4 666 * This version of setTxAddress is just a wrapper for the version that takes 'long long's,
Owen 0:8ae48233b4e4 667 * in case the main code doesn't want to deal with long long's.
Owen 0:8ae48233b4e4 668 */
Owen 0:8ae48233b4e4 669 void nRF24L01P::setTxAddress(unsigned long msb_address, unsigned long lsb_address, int width) {
Owen 0:8ae48233b4e4 670
Owen 0:8ae48233b4e4 671 unsigned long long address = ( ( (unsigned long long) msb_address ) << 32 ) | ( ( (unsigned long long) lsb_address ) << 0 );
Owen 0:8ae48233b4e4 672
Owen 0:8ae48233b4e4 673 setTxAddress(address, width);
Owen 0:8ae48233b4e4 674
Owen 0:8ae48233b4e4 675 }
Owen 0:8ae48233b4e4 676
Owen 0:8ae48233b4e4 677
Owen 0:8ae48233b4e4 678 void nRF24L01P::setTxAddress(unsigned long long address, int width) {
Owen 0:8ae48233b4e4 679
Owen 0:8ae48233b4e4 680 int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & ~_NRF24L01P_SETUP_AW_AW_MASK;
Owen 0:8ae48233b4e4 681
Owen 0:8ae48233b4e4 682 switch ( width ) {
Owen 0:8ae48233b4e4 683
Owen 0:8ae48233b4e4 684 case 3:
Owen 0:8ae48233b4e4 685 setupAw |= _NRF24L01P_SETUP_AW_AW_3BYTE;
Owen 0:8ae48233b4e4 686 break;
Owen 0:8ae48233b4e4 687
Owen 0:8ae48233b4e4 688 case 4:
Owen 0:8ae48233b4e4 689 setupAw |= _NRF24L01P_SETUP_AW_AW_4BYTE;
Owen 0:8ae48233b4e4 690 break;
Owen 0:8ae48233b4e4 691
Owen 0:8ae48233b4e4 692 case 5:
Owen 0:8ae48233b4e4 693 setupAw |= _NRF24L01P_SETUP_AW_AW_5BYTE;
Owen 0:8ae48233b4e4 694 break;
Owen 0:8ae48233b4e4 695
Owen 0:8ae48233b4e4 696 default:
Owen 0:8ae48233b4e4 697 error( "nRF24L01P: Invalid setTxAddress width setting %d\r\n", width );
Owen 0:8ae48233b4e4 698 return;
Owen 0:8ae48233b4e4 699
Owen 0:8ae48233b4e4 700 }
Owen 0:8ae48233b4e4 701
Owen 0:8ae48233b4e4 702 setRegister(_NRF24L01P_REG_SETUP_AW, setupAw);
Owen 0:8ae48233b4e4 703
Owen 0:8ae48233b4e4 704 int cn = (_NRF24L01P_SPI_CMD_WR_REG | (_NRF24L01P_REG_TX_ADDR & _NRF24L01P_REG_ADDRESS_MASK));
Owen 0:8ae48233b4e4 705
Owen 0:8ae48233b4e4 706 nCS_ = 0;
Owen 0:8ae48233b4e4 707
Owen 0:8ae48233b4e4 708 int status = spi_.write(cn);
Owen 0:8ae48233b4e4 709
Owen 0:8ae48233b4e4 710 while ( width-- > 0 ) {
Owen 0:8ae48233b4e4 711
Owen 0:8ae48233b4e4 712 //
Owen 0:8ae48233b4e4 713 // LSByte first
Owen 0:8ae48233b4e4 714 //
Owen 0:8ae48233b4e4 715 spi_.write((int) (address & 0xFF));
Owen 0:8ae48233b4e4 716 address >>= 8;
Owen 0:8ae48233b4e4 717
Owen 0:8ae48233b4e4 718 }
Owen 0:8ae48233b4e4 719
Owen 0:8ae48233b4e4 720 nCS_ = 1;
Owen 0:8ae48233b4e4 721
Owen 0:8ae48233b4e4 722 }
Owen 0:8ae48233b4e4 723
Owen 0:8ae48233b4e4 724
Owen 0:8ae48233b4e4 725 unsigned long long nRF24L01P::getRxAddress(int pipe) {
Owen 0:8ae48233b4e4 726
Owen 0:8ae48233b4e4 727 if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
Owen 0:8ae48233b4e4 728
Owen 0:8ae48233b4e4 729 error( "nRF24L01P: Invalid setRxAddress pipe number %d\r\n", pipe );
Owen 0:8ae48233b4e4 730 return 0;
Owen 0:8ae48233b4e4 731
Owen 0:8ae48233b4e4 732 }
Owen 0:8ae48233b4e4 733
Owen 0:8ae48233b4e4 734 int width;
Owen 0:8ae48233b4e4 735
Owen 0:8ae48233b4e4 736 if ( ( pipe == NRF24L01P_PIPE_P0 ) || ( pipe == NRF24L01P_PIPE_P1 ) ) {
Owen 0:8ae48233b4e4 737
Owen 0:8ae48233b4e4 738 int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & _NRF24L01P_SETUP_AW_AW_MASK;
Owen 0:8ae48233b4e4 739
Owen 0:8ae48233b4e4 740 switch ( setupAw ) {
Owen 0:8ae48233b4e4 741
Owen 0:8ae48233b4e4 742 case _NRF24L01P_SETUP_AW_AW_3BYTE:
Owen 0:8ae48233b4e4 743 width = 3;
Owen 0:8ae48233b4e4 744 break;
Owen 0:8ae48233b4e4 745
Owen 0:8ae48233b4e4 746 case _NRF24L01P_SETUP_AW_AW_4BYTE:
Owen 0:8ae48233b4e4 747 width = 4;
Owen 0:8ae48233b4e4 748 break;
Owen 0:8ae48233b4e4 749
Owen 0:8ae48233b4e4 750 case _NRF24L01P_SETUP_AW_AW_5BYTE:
Owen 0:8ae48233b4e4 751 width = 5;
Owen 0:8ae48233b4e4 752 break;
Owen 0:8ae48233b4e4 753
Owen 0:8ae48233b4e4 754 default:
Owen 0:8ae48233b4e4 755 error( "nRF24L01P: Unknown getRxAddress width value %d\r\n", setupAw );
Owen 0:8ae48233b4e4 756 return 0;
Owen 0:8ae48233b4e4 757
Owen 0:8ae48233b4e4 758 }
Owen 0:8ae48233b4e4 759
Owen 0:8ae48233b4e4 760 } else {
Owen 0:8ae48233b4e4 761
Owen 0:8ae48233b4e4 762 width = 1;
Owen 0:8ae48233b4e4 763
Owen 0:8ae48233b4e4 764 }
Owen 0:8ae48233b4e4 765
Owen 0:8ae48233b4e4 766 int rxAddrPxRegister = _NRF24L01P_REG_RX_ADDR_P0 + ( pipe - NRF24L01P_PIPE_P0 );
Owen 0:8ae48233b4e4 767
Owen 0:8ae48233b4e4 768 int cn = (_NRF24L01P_SPI_CMD_RD_REG | (rxAddrPxRegister & _NRF24L01P_REG_ADDRESS_MASK));
Owen 0:8ae48233b4e4 769
Owen 0:8ae48233b4e4 770 unsigned long long address = 0;
Owen 0:8ae48233b4e4 771
Owen 0:8ae48233b4e4 772 nCS_ = 0;
Owen 0:8ae48233b4e4 773
Owen 0:8ae48233b4e4 774 int status = spi_.write(cn);
Owen 0:8ae48233b4e4 775
Owen 0:8ae48233b4e4 776 for ( int i=0; i<width; i++ ) {
Owen 0:8ae48233b4e4 777
Owen 0:8ae48233b4e4 778 //
Owen 0:8ae48233b4e4 779 // LSByte first
Owen 0:8ae48233b4e4 780 //
Owen 0:8ae48233b4e4 781 address |= ( ( (unsigned long long)( spi_.write(_NRF24L01P_SPI_CMD_NOP) & 0xFF ) ) << (i*8) );
Owen 0:8ae48233b4e4 782
Owen 0:8ae48233b4e4 783 }
Owen 0:8ae48233b4e4 784
Owen 0:8ae48233b4e4 785 nCS_ = 1;
Owen 0:8ae48233b4e4 786
Owen 0:8ae48233b4e4 787 if ( !( ( pipe == NRF24L01P_PIPE_P0 ) || ( pipe == NRF24L01P_PIPE_P1 ) ) ) {
Owen 0:8ae48233b4e4 788
Owen 0:8ae48233b4e4 789 address |= ( getRxAddress(NRF24L01P_PIPE_P1) & ~((unsigned long long) 0xFF) );
Owen 0:8ae48233b4e4 790
Owen 0:8ae48233b4e4 791 }
Owen 0:8ae48233b4e4 792
Owen 0:8ae48233b4e4 793 return address;
Owen 0:8ae48233b4e4 794
Owen 0:8ae48233b4e4 795 }
Owen 0:8ae48233b4e4 796
Owen 0:8ae48233b4e4 797
Owen 0:8ae48233b4e4 798 unsigned long long nRF24L01P::getTxAddress(void) {
Owen 0:8ae48233b4e4 799
Owen 0:8ae48233b4e4 800 int setupAw = getRegister(_NRF24L01P_REG_SETUP_AW) & _NRF24L01P_SETUP_AW_AW_MASK;
Owen 0:8ae48233b4e4 801
Owen 0:8ae48233b4e4 802 int width;
Owen 0:8ae48233b4e4 803
Owen 0:8ae48233b4e4 804 switch ( setupAw ) {
Owen 0:8ae48233b4e4 805
Owen 0:8ae48233b4e4 806 case _NRF24L01P_SETUP_AW_AW_3BYTE:
Owen 0:8ae48233b4e4 807 width = 3;
Owen 0:8ae48233b4e4 808 break;
Owen 0:8ae48233b4e4 809
Owen 0:8ae48233b4e4 810 case _NRF24L01P_SETUP_AW_AW_4BYTE:
Owen 0:8ae48233b4e4 811 width = 4;
Owen 0:8ae48233b4e4 812 break;
Owen 0:8ae48233b4e4 813
Owen 0:8ae48233b4e4 814 case _NRF24L01P_SETUP_AW_AW_5BYTE:
Owen 0:8ae48233b4e4 815 width = 5;
Owen 0:8ae48233b4e4 816 break;
Owen 0:8ae48233b4e4 817
Owen 0:8ae48233b4e4 818 default:
Owen 0:8ae48233b4e4 819 error( "nRF24L01P: Unknown getTxAddress width value %d\r\n", setupAw );
Owen 0:8ae48233b4e4 820 return 0;
Owen 0:8ae48233b4e4 821
Owen 0:8ae48233b4e4 822 }
Owen 0:8ae48233b4e4 823
Owen 0:8ae48233b4e4 824 int cn = (_NRF24L01P_SPI_CMD_RD_REG | (_NRF24L01P_REG_TX_ADDR & _NRF24L01P_REG_ADDRESS_MASK));
Owen 0:8ae48233b4e4 825
Owen 0:8ae48233b4e4 826 unsigned long long address = 0;
Owen 0:8ae48233b4e4 827
Owen 0:8ae48233b4e4 828 nCS_ = 0;
Owen 0:8ae48233b4e4 829
Owen 0:8ae48233b4e4 830 int status = spi_.write(cn);
Owen 0:8ae48233b4e4 831
Owen 0:8ae48233b4e4 832 for ( int i=0; i<width; i++ ) {
Owen 0:8ae48233b4e4 833
Owen 0:8ae48233b4e4 834 //
Owen 0:8ae48233b4e4 835 // LSByte first
Owen 0:8ae48233b4e4 836 //
Owen 0:8ae48233b4e4 837 address |= ( ( (unsigned long long)( spi_.write(_NRF24L01P_SPI_CMD_NOP) & 0xFF ) ) << (i*8) );
Owen 0:8ae48233b4e4 838
Owen 0:8ae48233b4e4 839 }
Owen 0:8ae48233b4e4 840
Owen 0:8ae48233b4e4 841 nCS_ = 1;
Owen 0:8ae48233b4e4 842
Owen 0:8ae48233b4e4 843 return address;
Owen 0:8ae48233b4e4 844 }
Owen 0:8ae48233b4e4 845
Owen 0:8ae48233b4e4 846
Owen 0:8ae48233b4e4 847 bool nRF24L01P::readable(int pipe) {
Owen 0:8ae48233b4e4 848
Owen 0:8ae48233b4e4 849 if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
Owen 0:8ae48233b4e4 850
Owen 0:8ae48233b4e4 851 error( "nRF24L01P: Invalid readable pipe number %d\r\n", pipe );
Owen 0:8ae48233b4e4 852 return false;
Owen 0:8ae48233b4e4 853
Owen 0:8ae48233b4e4 854 }
Owen 0:8ae48233b4e4 855
Owen 0:8ae48233b4e4 856 int status = getStatusRegister();
Owen 0:8ae48233b4e4 857
Owen 0:8ae48233b4e4 858 return ( ( status & _NRF24L01P_STATUS_RX_DR ) && ( ( ( status & _NRF24L01P_STATUS_RX_P_NO ) >> 1 ) == ( pipe & 0x7 ) ) );
Owen 0:8ae48233b4e4 859
Owen 0:8ae48233b4e4 860 }
Owen 0:8ae48233b4e4 861
Owen 0:8ae48233b4e4 862
Owen 0:8ae48233b4e4 863 int nRF24L01P::write(int pipe, char *data, int count) {
ttajmajer 1:781a7eef8610 864
ttajmajer 1:781a7eef8610 865 Timer timeout;
Owen 0:8ae48233b4e4 866
Owen 0:8ae48233b4e4 867 // Note: the pipe number is ignored in a Transmit / write
Owen 0:8ae48233b4e4 868
Owen 0:8ae48233b4e4 869 //
Owen 0:8ae48233b4e4 870 // Save the CE state
Owen 0:8ae48233b4e4 871 //
Owen 0:8ae48233b4e4 872 int originalCe = ce_;
Owen 0:8ae48233b4e4 873 disable();
Owen 0:8ae48233b4e4 874
Owen 0:8ae48233b4e4 875 if ( count <= 0 ) return 0;
Owen 0:8ae48233b4e4 876
Owen 0:8ae48233b4e4 877 if ( count > _NRF24L01P_TX_FIFO_SIZE ) count = _NRF24L01P_TX_FIFO_SIZE;
Owen 0:8ae48233b4e4 878
Owen 0:8ae48233b4e4 879 // Clear the Status bit
Owen 0:8ae48233b4e4 880 setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_TX_DS);
Owen 0:8ae48233b4e4 881
Owen 0:8ae48233b4e4 882 nCS_ = 0;
Owen 0:8ae48233b4e4 883
Owen 0:8ae48233b4e4 884 int status = spi_.write(_NRF24L01P_SPI_CMD_WR_TX_PAYLOAD);
Owen 0:8ae48233b4e4 885
Owen 0:8ae48233b4e4 886 for ( int i = 0; i < count; i++ ) {
Owen 0:8ae48233b4e4 887
Owen 0:8ae48233b4e4 888 spi_.write(*data++);
Owen 0:8ae48233b4e4 889
Owen 0:8ae48233b4e4 890 }
Owen 0:8ae48233b4e4 891
Owen 0:8ae48233b4e4 892 nCS_ = 1;
Owen 0:8ae48233b4e4 893
Owen 0:8ae48233b4e4 894 int originalMode = mode;
Owen 0:8ae48233b4e4 895 setTransmitMode();
Owen 0:8ae48233b4e4 896
Owen 0:8ae48233b4e4 897 enable();
Owen 0:8ae48233b4e4 898 wait_us(_NRF24L01P_TIMING_Thce_us);
Owen 0:8ae48233b4e4 899 disable();
Owen 0:8ae48233b4e4 900
ttajmajer 1:781a7eef8610 901 //timeout.start();
ttajmajer 1:781a7eef8610 902 while ( !( getStatusRegister() & (_NRF24L01P_STATUS_TX_DS | _NRF24L01P_STATUS_MAX_RT) ) ) {
Owen 0:8ae48233b4e4 903
Owen 0:8ae48233b4e4 904 }
ttajmajer 1:781a7eef8610 905 //timeout.stop();
ttajmajer 1:781a7eef8610 906 //timeout.reset();
ttajmajer 1:781a7eef8610 907
ttajmajer 1:781a7eef8610 908 if(getStatusRegister() & _NRF24L01P_STATUS_MAX_RT)
ttajmajer 1:781a7eef8610 909 count = -1;
ttajmajer 1:781a7eef8610 910
Owen 0:8ae48233b4e4 911
Owen 0:8ae48233b4e4 912 // Clear the Status bit
Owen 0:8ae48233b4e4 913 setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_TX_DS);
ttajmajer 1:781a7eef8610 914 setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_MAX_RT);
Owen 0:8ae48233b4e4 915
Owen 0:8ae48233b4e4 916 if ( originalMode == _NRF24L01P_MODE_RX ) {
Owen 0:8ae48233b4e4 917
Owen 0:8ae48233b4e4 918 setReceiveMode();
Owen 0:8ae48233b4e4 919
Owen 0:8ae48233b4e4 920 }
Owen 0:8ae48233b4e4 921
Owen 0:8ae48233b4e4 922 ce_ = originalCe;
Owen 0:8ae48233b4e4 923 wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
Owen 0:8ae48233b4e4 924
Owen 0:8ae48233b4e4 925 return count;
Owen 0:8ae48233b4e4 926
Owen 0:8ae48233b4e4 927 }
Owen 0:8ae48233b4e4 928
Owen 0:8ae48233b4e4 929
Owen 0:8ae48233b4e4 930 int nRF24L01P::read(int pipe, char *data, int count) {
Owen 0:8ae48233b4e4 931
Owen 0:8ae48233b4e4 932 if ( ( pipe < NRF24L01P_PIPE_P0 ) || ( pipe > NRF24L01P_PIPE_P5 ) ) {
Owen 0:8ae48233b4e4 933
Owen 0:8ae48233b4e4 934 error( "nRF24L01P: Invalid read pipe number %d\r\n", pipe );
Owen 0:8ae48233b4e4 935 return -1;
Owen 0:8ae48233b4e4 936
Owen 0:8ae48233b4e4 937 }
Owen 0:8ae48233b4e4 938
Owen 0:8ae48233b4e4 939 if ( count <= 0 ) return 0;
Owen 0:8ae48233b4e4 940
Owen 0:8ae48233b4e4 941 if ( count > _NRF24L01P_RX_FIFO_SIZE ) count = _NRF24L01P_RX_FIFO_SIZE;
Owen 0:8ae48233b4e4 942
Owen 0:8ae48233b4e4 943 if ( readable(pipe) ) {
Owen 0:8ae48233b4e4 944
Owen 0:8ae48233b4e4 945 nCS_ = 0;
Owen 0:8ae48233b4e4 946
Owen 0:8ae48233b4e4 947 int status = spi_.write(_NRF24L01P_SPI_CMD_R_RX_PL_WID);
Owen 0:8ae48233b4e4 948
jackmax 3:3f6bf32d36c2 949 int rxPayloadWidth = spi_.write(_NRF24L01P_SPI_CMD_NOP) & 0xFF;
Owen 0:8ae48233b4e4 950
Owen 0:8ae48233b4e4 951 nCS_ = 1;
Owen 0:8ae48233b4e4 952
Owen 0:8ae48233b4e4 953 if ( ( rxPayloadWidth < 0 ) || ( rxPayloadWidth > _NRF24L01P_RX_FIFO_SIZE ) ) {
Owen 0:8ae48233b4e4 954
Owen 0:8ae48233b4e4 955 // Received payload error: need to flush the FIFO
Owen 0:8ae48233b4e4 956
Owen 0:8ae48233b4e4 957 nCS_ = 0;
Owen 0:8ae48233b4e4 958
Owen 0:8ae48233b4e4 959 int status = spi_.write(_NRF24L01P_SPI_CMD_FLUSH_RX);
Owen 0:8ae48233b4e4 960
Owen 0:8ae48233b4e4 961 int rxPayloadWidth = spi_.write(_NRF24L01P_SPI_CMD_NOP);
Owen 0:8ae48233b4e4 962
Owen 0:8ae48233b4e4 963 nCS_ = 1;
Owen 0:8ae48233b4e4 964
Owen 0:8ae48233b4e4 965 //
Owen 0:8ae48233b4e4 966 // At this point, we should retry the reception,
Owen 0:8ae48233b4e4 967 // but for now we'll just fall through...
Owen 0:8ae48233b4e4 968 //
Owen 0:8ae48233b4e4 969
Owen 0:8ae48233b4e4 970 } else {
Owen 0:8ae48233b4e4 971
Owen 0:8ae48233b4e4 972 if ( rxPayloadWidth < count ) count = rxPayloadWidth;
Owen 0:8ae48233b4e4 973
Owen 0:8ae48233b4e4 974 nCS_ = 0;
Owen 0:8ae48233b4e4 975
Owen 0:8ae48233b4e4 976 int status = spi_.write(_NRF24L01P_SPI_CMD_RD_RX_PAYLOAD);
Owen 0:8ae48233b4e4 977
Owen 0:8ae48233b4e4 978 for ( int i = 0; i < count; i++ ) {
Owen 0:8ae48233b4e4 979
Owen 0:8ae48233b4e4 980 *data++ = spi_.write(_NRF24L01P_SPI_CMD_NOP);
Owen 0:8ae48233b4e4 981
Owen 0:8ae48233b4e4 982 }
Owen 0:8ae48233b4e4 983
Owen 0:8ae48233b4e4 984 nCS_ = 1;
Owen 0:8ae48233b4e4 985
Owen 0:8ae48233b4e4 986 // Clear the Status bit
Owen 0:8ae48233b4e4 987 setRegister(_NRF24L01P_REG_STATUS, _NRF24L01P_STATUS_RX_DR);
Owen 0:8ae48233b4e4 988
Owen 0:8ae48233b4e4 989 return count;
Owen 0:8ae48233b4e4 990
Owen 0:8ae48233b4e4 991 }
Owen 0:8ae48233b4e4 992
Owen 0:8ae48233b4e4 993 } else {
Owen 0:8ae48233b4e4 994
Owen 0:8ae48233b4e4 995 //
Owen 0:8ae48233b4e4 996 // What should we do if there is no 'readable' data?
Owen 0:8ae48233b4e4 997 // We could wait for data to arrive, but for now, we'll
Owen 0:8ae48233b4e4 998 // just return with no data.
Owen 0:8ae48233b4e4 999 //
Owen 0:8ae48233b4e4 1000 return 0;
Owen 0:8ae48233b4e4 1001
Owen 0:8ae48233b4e4 1002 }
Owen 0:8ae48233b4e4 1003
Owen 0:8ae48233b4e4 1004 //
Owen 0:8ae48233b4e4 1005 // We get here because an error condition occured;
Owen 0:8ae48233b4e4 1006 // We could wait for data to arrive, but for now, we'll
Owen 0:8ae48233b4e4 1007 // just return with no data.
Owen 0:8ae48233b4e4 1008 //
Owen 0:8ae48233b4e4 1009 return -1;
Owen 0:8ae48233b4e4 1010
Owen 0:8ae48233b4e4 1011 }
Owen 0:8ae48233b4e4 1012
Owen 0:8ae48233b4e4 1013 void nRF24L01P::setRegister(int regAddress, int regData) {
Owen 0:8ae48233b4e4 1014
Owen 0:8ae48233b4e4 1015 //
Owen 0:8ae48233b4e4 1016 // Save the CE state
Owen 0:8ae48233b4e4 1017 //
Owen 0:8ae48233b4e4 1018 int originalCe = ce_;
Owen 0:8ae48233b4e4 1019 disable();
Owen 0:8ae48233b4e4 1020
Owen 0:8ae48233b4e4 1021 int cn = (_NRF24L01P_SPI_CMD_WR_REG | (regAddress & _NRF24L01P_REG_ADDRESS_MASK));
Owen 0:8ae48233b4e4 1022
Owen 0:8ae48233b4e4 1023 nCS_ = 0;
Owen 0:8ae48233b4e4 1024
Owen 0:8ae48233b4e4 1025 int status = spi_.write(cn);
Owen 0:8ae48233b4e4 1026
Owen 0:8ae48233b4e4 1027 spi_.write(regData & 0xFF);
Owen 0:8ae48233b4e4 1028
Owen 0:8ae48233b4e4 1029 nCS_ = 1;
Owen 0:8ae48233b4e4 1030
Owen 0:8ae48233b4e4 1031 ce_ = originalCe;
Owen 0:8ae48233b4e4 1032 wait_us( _NRF24L01P_TIMING_Tpece2csn_us );
Owen 0:8ae48233b4e4 1033
Owen 0:8ae48233b4e4 1034 }
Owen 0:8ae48233b4e4 1035
Owen 0:8ae48233b4e4 1036
Owen 0:8ae48233b4e4 1037 int nRF24L01P::getRegister(int regAddress) {
Owen 0:8ae48233b4e4 1038
Owen 0:8ae48233b4e4 1039 int cn = (_NRF24L01P_SPI_CMD_RD_REG | (regAddress & _NRF24L01P_REG_ADDRESS_MASK));
Owen 0:8ae48233b4e4 1040
Owen 0:8ae48233b4e4 1041 nCS_ = 0;
Owen 0:8ae48233b4e4 1042
Owen 0:8ae48233b4e4 1043 int status = spi_.write(cn);
Owen 0:8ae48233b4e4 1044
Owen 0:8ae48233b4e4 1045 int dn = spi_.write(_NRF24L01P_SPI_CMD_NOP);
Owen 0:8ae48233b4e4 1046
Owen 0:8ae48233b4e4 1047 nCS_ = 1;
Owen 0:8ae48233b4e4 1048
Owen 0:8ae48233b4e4 1049 return dn;
Owen 0:8ae48233b4e4 1050
Owen 0:8ae48233b4e4 1051 }
Owen 0:8ae48233b4e4 1052
Owen 0:8ae48233b4e4 1053 int nRF24L01P::getStatusRegister(void) {
Owen 0:8ae48233b4e4 1054
Owen 0:8ae48233b4e4 1055 nCS_ = 0;
Owen 0:8ae48233b4e4 1056
Owen 0:8ae48233b4e4 1057 int status = spi_.write(_NRF24L01P_SPI_CMD_NOP);
Owen 0:8ae48233b4e4 1058
Owen 0:8ae48233b4e4 1059 nCS_ = 1;
Owen 0:8ae48233b4e4 1060
Owen 0:8ae48233b4e4 1061 return status;
Owen 0:8ae48233b4e4 1062
Owen 0:8ae48233b4e4 1063 }