Chris Dick / nRF2401A

Library for the nRF2401A Transceiver

Dependents:   nRF2401A_Hello_World nRF2401A_Wireless_Accelerometer_joypad nRF2401A_Gameduino_Invaders

nRF2401A.cpp@0:17cb4be1e37f, 2013-10-04 (annotated)

Committer:
TheChrisyd
Date:
Fri Oct 04 16:14:49 2013 +0000
Revision:
0:17cb4be1e37f
Child:
1:8c57f88ff574
first commit for week 1 progress update

Who changed what in which revision?

UserRevisionLine numberNew contents of line
TheChrisyd 0:17cb4be1e37f 1 /* mbed nRF2401A Library
TheChrisyd 0:17cb4be1e37f 2 *
TheChrisyd 0:17cb4be1e37f 3 * Copyright (c) 2011, Per Söderstam
TheChrisyd 0:17cb4be1e37f 4 *
TheChrisyd 0:17cb4be1e37f 5 * Permission is hereby granted, free of charge, to any person obtaining a copy
TheChrisyd 0:17cb4be1e37f 6 * of this software and associated documentation files (the "Software"), to deal
TheChrisyd 0:17cb4be1e37f 7 * in the Software without restriction, including without limitation the rights
TheChrisyd 0:17cb4be1e37f 8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
TheChrisyd 0:17cb4be1e37f 9 * copies of the Software, and to permit persons to whom the Software is
TheChrisyd 0:17cb4be1e37f 10 * furnished to do so, subject to the following conditions:
TheChrisyd 0:17cb4be1e37f 11 *
TheChrisyd 0:17cb4be1e37f 12 * The above copyright notice and this permission notice shall be included in
TheChrisyd 0:17cb4be1e37f 13 * all copies or substantial portions of the Software.
TheChrisyd 0:17cb4be1e37f 14 *
TheChrisyd 0:17cb4be1e37f 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
TheChrisyd 0:17cb4be1e37f 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
TheChrisyd 0:17cb4be1e37f 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
TheChrisyd 0:17cb4be1e37f 18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
TheChrisyd 0:17cb4be1e37f 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
TheChrisyd 0:17cb4be1e37f 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
TheChrisyd 0:17cb4be1e37f 21 * THE SOFTWARE.
TheChrisyd 0:17cb4be1e37f 22 */
TheChrisyd 0:17cb4be1e37f 23
TheChrisyd 0:17cb4be1e37f 24 #include "nRF2401A.h"
TheChrisyd 0:17cb4be1e37f 25
TheChrisyd 0:17cb4be1e37f 26
TheChrisyd 0:17cb4be1e37f 27 nRF2401A::nRF2401A(PinName ce,
TheChrisyd 0:17cb4be1e37f 28 PinName cs,
TheChrisyd 0:17cb4be1e37f 29 PinName dr1,
TheChrisyd 0:17cb4be1e37f 30 PinName clk1,
TheChrisyd 0:17cb4be1e37f 31 PinName data)
TheChrisyd 0:17cb4be1e37f 32 : _ce(DigitalOut(ce)),
TheChrisyd 0:17cb4be1e37f 33 _cs(DigitalOut(cs)),
TheChrisyd 0:17cb4be1e37f 34 _dr1(DigitalIn(dr1)),
TheChrisyd 0:17cb4be1e37f 35 _clk1(DigitalOut(clk1)),
TheChrisyd 0:17cb4be1e37f 36 _data(DigitalInOut(data)),
TheChrisyd 0:17cb4be1e37f 37 _state(nRF2401A::UNDEF),
TheChrisyd 0:17cb4be1e37f 38 _rx_handler((nRF2401A_rx_handler_t) 0),
TheChrisyd 0:17cb4be1e37f 39 _rx_handler_arg((void *) 0),
TheChrisyd 0:17cb4be1e37f 40 _dr1_isr(InterruptIn(dr1)) {
TheChrisyd 0:17cb4be1e37f 41
TheChrisyd 0:17cb4be1e37f 42 // init member variables
TheChrisyd 0:17cb4be1e37f 43 _data.output();
TheChrisyd 0:17cb4be1e37f 44 // setup...
TheChrisyd 0:17cb4be1e37f 45 _ctrl_packet = (uint8_t *) &_ctrl_packet_buf;
TheChrisyd 0:17cb4be1e37f 46 _dr1_isr.rise(this, &nRF2401A::dataReadyHandler);
TheChrisyd 0:17cb4be1e37f 47 // ...tranciever in standby...
TheChrisyd 0:17cb4be1e37f 48 _ce = 0;
TheChrisyd 0:17cb4be1e37f 49 _cs = 0;
TheChrisyd 0:17cb4be1e37f 50 // ...and clear receive buffer
TheChrisyd 0:17cb4be1e37f 51 for (int i = 0; i < 16; i++)
TheChrisyd 0:17cb4be1e37f 52 _data_buf[i] = 0x0;
TheChrisyd 0:17cb4be1e37f 53 // ...set imutable control fields...
TheChrisyd 0:17cb4be1e37f 54 _ctrl_packet_buf.enable_dual_channel_mode = 0x0; // single channel receive
TheChrisyd 0:17cb4be1e37f 55 _ctrl_packet_buf.communication_mode = 0x1; // ShockBurst mode
TheChrisyd 0:17cb4be1e37f 56 _ctrl_packet_buf.xo_frequency = 0x3; // 16 MHz crystal
TheChrisyd 0:17cb4be1e37f 57 _ctrl_packet_buf.rf_power = 0x3; // 0 dBm (1 mW) output power
TheChrisyd 0:17cb4be1e37f 58 // ...start in RX mode
TheChrisyd 0:17cb4be1e37f 59 _ctrl_packet_buf.txr_switch = nRF2401A::RX_MODE;
TheChrisyd 0:17cb4be1e37f 60 // assure minimum wake up time while assuming tranciever powers up with uP
TheChrisyd 0:17cb4be1e37f 61 wait_ms(Tpd2cfgm);
TheChrisyd 0:17cb4be1e37f 62
TheChrisyd 0:17cb4be1e37f 63 return;
TheChrisyd 0:17cb4be1e37f 64 }
TheChrisyd 0:17cb4be1e37f 65
TheChrisyd 0:17cb4be1e37f 66 void nRF2401A::printControlPacket(Serial& port)
TheChrisyd 0:17cb4be1e37f 67 {
TheChrisyd 0:17cb4be1e37f 68 for(int i = 0; i < sizeof(_ctrl_packet_buf); i++)
TheChrisyd 0:17cb4be1e37f 69 port.printf("%02x ", _ctrl_packet[i]);
TheChrisyd 0:17cb4be1e37f 70 port.printf("\n\r");
TheChrisyd 0:17cb4be1e37f 71 return;
TheChrisyd 0:17cb4be1e37f 72 }
TheChrisyd 0:17cb4be1e37f 73
TheChrisyd 0:17cb4be1e37f 74 void nRF2401A::printDataPacket(Serial& port)
TheChrisyd 0:17cb4be1e37f 75 {
TheChrisyd 0:17cb4be1e37f 76 for(int i = 0; i < sizeof(_data_buf); i++)
TheChrisyd 0:17cb4be1e37f 77 port.printf("%02x ", _data_buf[i]);
TheChrisyd 0:17cb4be1e37f 78 port.printf("\r");
TheChrisyd 0:17cb4be1e37f 79 return;
TheChrisyd 0:17cb4be1e37f 80 }
TheChrisyd 0:17cb4be1e37f 81
TheChrisyd 0:17cb4be1e37f 82 nRF2401A& nRF2401A::attachRXHandler(nRF2401A_rx_handler_t handler, void *arg) {
TheChrisyd 0:17cb4be1e37f 83
TheChrisyd 0:17cb4be1e37f 84 _rx_handler = handler;
TheChrisyd 0:17cb4be1e37f 85 _rx_handler_arg = arg;
TheChrisyd 0:17cb4be1e37f 86
TheChrisyd 0:17cb4be1e37f 87 return *this;
TheChrisyd 0:17cb4be1e37f 88 }
TheChrisyd 0:17cb4be1e37f 89
TheChrisyd 0:17cb4be1e37f 90 nRF2401A& nRF2401A::sendMsg(nRF2401A::address_t addr, uint8_t addr_len, uint8_t *msg_buf, uint8_t msg_len) {
TheChrisyd 0:17cb4be1e37f 91
TheChrisyd 0:17cb4be1e37f 92 // point to start of address byte in address
TheChrisyd 0:17cb4be1e37f 93 uint8_t *aligned_addr = &addr[sizeof(address_t) - (addr_len / 8)];
TheChrisyd 0:17cb4be1e37f 94 // wait for tx completion
TheChrisyd 0:17cb4be1e37f 95 int Toa = (_ctrl_packet_buf.rf_data_rate == nRF2401A::BIT_RATE_1MBITS ? 1 : 4) * (addr_len + msg_len + 1 + 16);
TheChrisyd 0:17cb4be1e37f 96
TheChrisyd 0:17cb4be1e37f 97 switch (_state) {
TheChrisyd 0:17cb4be1e37f 98 case nRF2401A::RX:
TheChrisyd 0:17cb4be1e37f 99 // switch to transmit
TheChrisyd 0:17cb4be1e37f 100 _ce = 0;
TheChrisyd 0:17cb4be1e37f 101 _cs = 0;
TheChrisyd 0:17cb4be1e37f 102 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 103 // assert CS/CE and wait Tcs2data
TheChrisyd 0:17cb4be1e37f 104 _ce = 0;
TheChrisyd 0:17cb4be1e37f 105 _cs = 1;
TheChrisyd 0:17cb4be1e37f 106 wait_us(Tcs2data);
TheChrisyd 0:17cb4be1e37f 107 // push out the bits
TheChrisyd 0:17cb4be1e37f 108 _data = nRF2401A::TX_MODE;
TheChrisyd 0:17cb4be1e37f 109 wait_us(Ts);
TheChrisyd 0:17cb4be1e37f 110 _clk1 = 1;
TheChrisyd 0:17cb4be1e37f 111 wait_us(Th);
TheChrisyd 0:17cb4be1e37f 112 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 113 // wait Td
TheChrisyd 0:17cb4be1e37f 114 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 115 // deassert CS/CE and done...
TheChrisyd 0:17cb4be1e37f 116 _cs = 0;
TheChrisyd 0:17cb4be1e37f 117 _ce = 0;
TheChrisyd 0:17cb4be1e37f 118
TheChrisyd 0:17cb4be1e37f 119 // zero control and data lines
TheChrisyd 0:17cb4be1e37f 120 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 121 _data = 0;
TheChrisyd 0:17cb4be1e37f 122 // wait Td
TheChrisyd 0:17cb4be1e37f 123 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 124 // assert CE and wait Tcs2data
TheChrisyd 0:17cb4be1e37f 125 _ce = 1;
TheChrisyd 0:17cb4be1e37f 126 wait_us(Tce2data);
TheChrisyd 0:17cb4be1e37f 127 // push out the address bits
TheChrisyd 0:17cb4be1e37f 128 for (int i = 0; i < addr_len; i++) {
TheChrisyd 0:17cb4be1e37f 129 _data = ((0x80 >> (i % 8)) & aligned_addr[i / 8]) ? 0x1 : 0x0;
TheChrisyd 0:17cb4be1e37f 130 wait_us(Ts);
TheChrisyd 0:17cb4be1e37f 131 _clk1 = 1;
TheChrisyd 0:17cb4be1e37f 132 wait_us(Th);
TheChrisyd 0:17cb4be1e37f 133 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 134 }
TheChrisyd 0:17cb4be1e37f 135 // push out the message bits
TheChrisyd 0:17cb4be1e37f 136 for (int i = 0; i < msg_len; i++) {
TheChrisyd 0:17cb4be1e37f 137 _data = ((0x80 >> (i % 8)) & msg_buf[i / 8]) ? 0x1 : 0x0;
TheChrisyd 0:17cb4be1e37f 138 wait_us(Ts);
TheChrisyd 0:17cb4be1e37f 139 _clk1 = 1;
TheChrisyd 0:17cb4be1e37f 140 wait_us(Th);
TheChrisyd 0:17cb4be1e37f 141 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 142 }
TheChrisyd 0:17cb4be1e37f 143 // reset data
TheChrisyd 0:17cb4be1e37f 144 _data = 0;
TheChrisyd 0:17cb4be1e37f 145 // deassert CE will initiate transmission
TheChrisyd 0:17cb4be1e37f 146 _ce = 0;
TheChrisyd 0:17cb4be1e37f 147 wait_us(Tsby2txSB + Toa);
TheChrisyd 0:17cb4be1e37f 148
TheChrisyd 0:17cb4be1e37f 149 // switch back to receive
TheChrisyd 0:17cb4be1e37f 150 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 151 // assert CS/CE and wait Tcs2data
TheChrisyd 0:17cb4be1e37f 152 _cs = 1;
TheChrisyd 0:17cb4be1e37f 153 wait_us(Tcs2data);
TheChrisyd 0:17cb4be1e37f 154 // push out the bits
TheChrisyd 0:17cb4be1e37f 155 _data = nRF2401A::RX_MODE;
TheChrisyd 0:17cb4be1e37f 156 wait_us(Ts);
TheChrisyd 0:17cb4be1e37f 157 _clk1 = 1;
TheChrisyd 0:17cb4be1e37f 158 wait_us(Th);
TheChrisyd 0:17cb4be1e37f 159 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 160 // wait Td
TheChrisyd 0:17cb4be1e37f 161 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 162 _data = 0;
TheChrisyd 0:17cb4be1e37f 163 // deassert CS/CE and done...
TheChrisyd 0:17cb4be1e37f 164 _cs = 0;
TheChrisyd 0:17cb4be1e37f 165 // wait Td to avoid simultaineous control high
TheChrisyd 0:17cb4be1e37f 166 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 167 _ce = 1;
TheChrisyd 0:17cb4be1e37f 168 // done
TheChrisyd 0:17cb4be1e37f 169 break;
TheChrisyd 0:17cb4be1e37f 170 case nRF2401A::STANDBY:
TheChrisyd 0:17cb4be1e37f 171 case nRF2401A::TX:
TheChrisyd 0:17cb4be1e37f 172 case nRF2401A::UNDEF:
TheChrisyd 0:17cb4be1e37f 173 default:
TheChrisyd 0:17cb4be1e37f 174 // can only send in RX mode
TheChrisyd 0:17cb4be1e37f 175 break;
TheChrisyd 0:17cb4be1e37f 176 }
TheChrisyd 0:17cb4be1e37f 177
TheChrisyd 0:17cb4be1e37f 178 return *this;
TheChrisyd 0:17cb4be1e37f 179 }
TheChrisyd 0:17cb4be1e37f 180
TheChrisyd 0:17cb4be1e37f 181 void nRF2401A::pushCtrl(uint8_t *buf, uint8_t n_bits, bool is_ctrl) {
TheChrisyd 0:17cb4be1e37f 182
TheChrisyd 0:17cb4be1e37f 183 DigitalOut &ctrl_pin = is_ctrl ? _cs : _ce;
TheChrisyd 0:17cb4be1e37f 184
TheChrisyd 0:17cb4be1e37f 185 // set data to output
TheChrisyd 0:17cb4be1e37f 186 _data.output();
TheChrisyd 0:17cb4be1e37f 187 // zero control and data lines
TheChrisyd 0:17cb4be1e37f 188 _cs = 0;
TheChrisyd 0:17cb4be1e37f 189 _ce = 0;
TheChrisyd 0:17cb4be1e37f 190 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 191 _data = 0;
TheChrisyd 0:17cb4be1e37f 192 // wait Td
TheChrisyd 0:17cb4be1e37f 193 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 194 // assert CS/CE and wait Tcs2data
TheChrisyd 0:17cb4be1e37f 195 ctrl_pin = 1;
TheChrisyd 0:17cb4be1e37f 196 wait_us(Tcs2data);
TheChrisyd 0:17cb4be1e37f 197 // push out the bits
TheChrisyd 0:17cb4be1e37f 198 for (int i = 0; i < n_bits; i++) {
TheChrisyd 0:17cb4be1e37f 199 _data = ((0x80 >> (i % 8)) & buf[i / 8]) ? 0x1 : 0x0;
TheChrisyd 0:17cb4be1e37f 200 wait_us(Ts);
TheChrisyd 0:17cb4be1e37f 201 _clk1 = 1;
TheChrisyd 0:17cb4be1e37f 202 wait_us(Th);
TheChrisyd 0:17cb4be1e37f 203 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 204 }
TheChrisyd 0:17cb4be1e37f 205 _data = 0;
TheChrisyd 0:17cb4be1e37f 206 // wait Td
TheChrisyd 0:17cb4be1e37f 207 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 208 // deassert CS/CE and done...
TheChrisyd 0:17cb4be1e37f 209 ctrl_pin = 0;
TheChrisyd 0:17cb4be1e37f 210
TheChrisyd 0:17cb4be1e37f 211 return;
TheChrisyd 0:17cb4be1e37f 212 }
TheChrisyd 0:17cb4be1e37f 213
TheChrisyd 0:17cb4be1e37f 214 int nRF2401A::pull(uint8_t *buf) {
TheChrisyd 0:17cb4be1e37f 215 int n = 0;
TheChrisyd 0:17cb4be1e37f 216
TheChrisyd 0:17cb4be1e37f 217 // read from data pin
TheChrisyd 0:17cb4be1e37f 218 _data.input();
TheChrisyd 0:17cb4be1e37f 219 // init signals, go to standby
TheChrisyd 0:17cb4be1e37f 220 _ce = 1;
TheChrisyd 0:17cb4be1e37f 221 _cs = 0;
TheChrisyd 0:17cb4be1e37f 222 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 223 // ensure time from DR
TheChrisyd 0:17cb4be1e37f 224 wait_us(Td);
TheChrisyd 0:17cb4be1e37f 225
TheChrisyd 0:17cb4be1e37f 226 while (_dr1 == 1) {
TheChrisyd 0:17cb4be1e37f 227 _clk1 = 1;
TheChrisyd 0:17cb4be1e37f 228 wait_us(Thmin);
TheChrisyd 0:17cb4be1e37f 229 if(_data.read())
TheChrisyd 0:17cb4be1e37f 230 buf[n / 8] |= (0x80 >> (n % 8));
TheChrisyd 0:17cb4be1e37f 231 else
TheChrisyd 0:17cb4be1e37f 232 buf[n / 8] &= ~(0x80 >> (n % 8));
TheChrisyd 0:17cb4be1e37f 233 n++;
TheChrisyd 0:17cb4be1e37f 234 _clk1 = 0;
TheChrisyd 0:17cb4be1e37f 235 wait_us(Thmin);
TheChrisyd 0:17cb4be1e37f 236 }
TheChrisyd 0:17cb4be1e37f 237 // return to active
TheChrisyd 0:17cb4be1e37f 238 _ce = 1;
TheChrisyd 0:17cb4be1e37f 239 // reset data pin direction
TheChrisyd 0:17cb4be1e37f 240 _data.output();
TheChrisyd 0:17cb4be1e37f 241
TheChrisyd 0:17cb4be1e37f 242 return n;
TheChrisyd 0:17cb4be1e37f 243 }
TheChrisyd 0:17cb4be1e37f 244
TheChrisyd 0:17cb4be1e37f 245 void nRF2401A::activate(bool active) {
TheChrisyd 0:17cb4be1e37f 246 switch (_state) {
TheChrisyd 0:17cb4be1e37f 247 case nRF2401A::RX:
TheChrisyd 0:17cb4be1e37f 248 if (!active) {
TheChrisyd 0:17cb4be1e37f 249 _state = nRF2401A::STANDBY;
TheChrisyd 0:17cb4be1e37f 250 _ce = 0;
TheChrisyd 0:17cb4be1e37f 251 _cs = 0;
TheChrisyd 0:17cb4be1e37f 252 }
TheChrisyd 0:17cb4be1e37f 253 break;
TheChrisyd 0:17cb4be1e37f 254 case nRF2401A::STANDBY:
TheChrisyd 0:17cb4be1e37f 255 if (active) {
TheChrisyd 0:17cb4be1e37f 256 _state = nRF2401A::RX;
TheChrisyd 0:17cb4be1e37f 257 _ce = 1;
TheChrisyd 0:17cb4be1e37f 258 _cs = 0;
TheChrisyd 0:17cb4be1e37f 259 }
TheChrisyd 0:17cb4be1e37f 260 break;
TheChrisyd 0:17cb4be1e37f 261 case nRF2401A::TX:
TheChrisyd 0:17cb4be1e37f 262 case nRF2401A::UNDEF:
TheChrisyd 0:17cb4be1e37f 263 default:
TheChrisyd 0:17cb4be1e37f 264 break;
TheChrisyd 0:17cb4be1e37f 265 }
TheChrisyd 0:17cb4be1e37f 266
TheChrisyd 0:17cb4be1e37f 267 return;
TheChrisyd 0:17cb4be1e37f 268 }
TheChrisyd 0:17cb4be1e37f 269
TheChrisyd 0:17cb4be1e37f 270 void nRF2401A::dataReadyHandler(void) {
TheChrisyd 0:17cb4be1e37f 271 switch (_state) {
TheChrisyd 0:17cb4be1e37f 272 case nRF2401A::RX:
TheChrisyd 0:17cb4be1e37f 273 pull(_data_buf);
TheChrisyd 0:17cb4be1e37f 274 if (_rx_handler != (nRF2401A_rx_handler_t) 0)
TheChrisyd 0:17cb4be1e37f 275 _rx_handler(_rx_handler_arg);
TheChrisyd 0:17cb4be1e37f 276 break;
TheChrisyd 0:17cb4be1e37f 277 default:
TheChrisyd 0:17cb4be1e37f 278 // todo: error msg
TheChrisyd 0:17cb4be1e37f 279 break;
TheChrisyd 0:17cb4be1e37f 280 }
TheChrisyd 0:17cb4be1e37f 281 return;
TheChrisyd 0:17cb4be1e37f 282 }
TheChrisyd 0:17cb4be1e37f 283
TheChrisyd 0:17cb4be1e37f 284 nRF2401A& nRF2401A::flushControlPacket() {
TheChrisyd 0:17cb4be1e37f 285 switch (_state) {
TheChrisyd 0:17cb4be1e37f 286 case nRF2401A::UNDEF:
TheChrisyd 0:17cb4be1e37f 287 case nRF2401A::RX:
TheChrisyd 0:17cb4be1e37f 288 pushCtrl(_ctrl_packet, 15 << 3 );
TheChrisyd 0:17cb4be1e37f 289 _state = nRF2401A::RX;
TheChrisyd 0:17cb4be1e37f 290 _ce = 1;
TheChrisyd 0:17cb4be1e37f 291 _cs = 0;
TheChrisyd 0:17cb4be1e37f 292 break;
TheChrisyd 0:17cb4be1e37f 293 case nRF2401A::STANDBY:
TheChrisyd 0:17cb4be1e37f 294 pushCtrl(_ctrl_packet, 15 << 3 );
TheChrisyd 0:17cb4be1e37f 295 _state = nRF2401A::STANDBY;
TheChrisyd 0:17cb4be1e37f 296 _ce = 0;
TheChrisyd 0:17cb4be1e37f 297 _cs = 0;
TheChrisyd 0:17cb4be1e37f 298 break;
TheChrisyd 0:17cb4be1e37f 299 case nRF2401A::TX:
TheChrisyd 0:17cb4be1e37f 300 default:
TheChrisyd 0:17cb4be1e37f 301 _ce = 0;
TheChrisyd 0:17cb4be1e37f 302 _cs = 0;
TheChrisyd 0:17cb4be1e37f 303 }
TheChrisyd 0:17cb4be1e37f 304
TheChrisyd 0:17cb4be1e37f 305 return *this;
TheChrisyd 0:17cb4be1e37f 306 }