ECE 4180 - Final Project Team / Mbed 2 deprecated WalkieTalkie

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Dependencies:   mbed 4DGL-uLCD-SE mbed-rtos nRF24L01P

main.cpp@40:4f7d95c68d29, 2018-04-27 (annotated)

Committer:
jacksacane
Date:
Fri Apr 27 22:03:51 2018 +0000
Revision:
40:4f7d95c68d29
Parent:
33:5d86c111d9bc
Child:
41:9ed924a1f2e0
Channel switching logic

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Nurchu 0:c35b54fb9c3c 1 #include "mbed.h"
Nurchu 7:0ac1f1ca8aa6 2 #include "rtos.h"
Nurchu 20:e068469ffb89 3
Nurchu 2:dc046ff72566 4 #include "Microphone.h"
Nurchu 20:e068469ffb89 5 #include "Speaker.h"
drechtmann3 18:e2a8ea6f55d3 6 #include "HUD.h"
Nurchu 20:e068469ffb89 7 #include "nRF24L01P.h"
jacksacane 21:95009b231c1f 8 #include "uLCD_4DGL.h"
Nurchu 20:e068469ffb89 9
Nurchu 20:e068469ffb89 10 #include "CircularBuf.h"
Nurchu 20:e068469ffb89 11 #include "CircularBuf.cpp" // Hack to get templates to work
Nurchu 20:e068469ffb89 12
Nurchu 27:08d34e60b6d0 13 // How many times larger the buffer should be
Nurchu 33:5d86c111d9bc 14 #define FIFO_BUFFER_SCALE 250
Nurchu 27:08d34e60b6d0 15 // How maybe bytes to send over RF
Nurchu 27:08d34e60b6d0 16 #define DATA_PACKET_SIZE 32
Nurchu 27:08d34e60b6d0 17 // How quickly to sample the mic / play the speaker
jacksacane 40:4f7d95c68d29 18 #define SAMPLE_PERIOD 1/8000.0
Nurchu 20:e068469ffb89 19
Nurchu 20:e068469ffb89 20
Nurchu 27:08d34e60b6d0 21 Serial pc(USBTX, USBRX);
Nurchu 27:08d34e60b6d0 22 DigitalOut myled1(LED1); // Mic data sent over RF
Nurchu 27:08d34e60b6d0 23 DigitalOut myled2(LED2); // Speaker data recieved over RF
Nurchu 27:08d34e60b6d0 24 DigitalOut myled3(LED3); // Sampled mic / played the speaker
Nurchu 27:08d34e60b6d0 25 DigitalOut myled4(LED4); // Heartbeat
Nurchu 20:e068469ffb89 26
Nurchu 20:e068469ffb89 27 Speaker spkr(p18);
Nurchu 27:08d34e60b6d0 28 Microphone mic(p16);
Nurchu 27:08d34e60b6d0 29
Nurchu 33:5d86c111d9bc 30 //uLCD_4DGL uLCD(p28, p27, p29); // serial tx, serial rx, reset pin;
Nurchu 20:e068469ffb89 31
Nurchu 20:e068469ffb89 32 nRF24L01P my_nrf24l01p(p5, p6, p7, p8, p9, p10); // mosi, miso, sck, csn, ce, irq
Nurchu 27:08d34e60b6d0 33 CircularBuf<uint8_t> txbuff( FIFO_BUFFER_SCALE * DATA_PACKET_SIZE );
Nurchu 27:08d34e60b6d0 34 CircularBuf<uint8_t> rxbuff( FIFO_BUFFER_SCALE * DATA_PACKET_SIZE );
Nurchu 27:08d34e60b6d0 35 Ticker sampler; //10:41 am 4/20
Nurchu 20:e068469ffb89 36
Nurchu 29:0c6f3c0c992a 37 InterruptIn button(p12); //changed DitialIn to InterruptIn at 5:54 4/18/18
Nurchu 27:08d34e60b6d0 38 BusIn channel(p21, p22, p23, p24); // TODO: CHANGE THESE TO THE ACTUAL PINS NEEDED
Nurchu 20:e068469ffb89 39
jacksacane 21:95009b231c1f 40 int rfFreq;
jacksacane 21:95009b231c1f 41 int dataRate;
jacksacane 21:95009b231c1f 42 unsigned long long rxAddr, txAddr;
jacksacane 40:4f7d95c68d29 43 int pipe = 0;
jacksacane 21:95009b231c1f 44
jacksacane 21:95009b231c1f 45 enum operatingMode {
jacksacane 21:95009b231c1f 46 RECEIVE = 0,
jacksacane 21:95009b231c1f 47 TRANSMIT
jacksacane 21:95009b231c1f 48 };
jacksacane 21:95009b231c1f 49
jacksacane 21:95009b231c1f 50 operatingMode mode;
jacksacane 21:95009b231c1f 51
Nurchu 27:08d34e60b6d0 52 // Cheap nonbranching min function
Nurchu 27:08d34e60b6d0 53 int min(int a, int b) {
Nurchu 27:08d34e60b6d0 54 return a * (int)(a <= b) + b * (int)(b < a);
Nurchu 27:08d34e60b6d0 55 }
drechtmann3 1:fc0a2c17e086 56
jacksacane 40:4f7d95c68d29 57 // Sets the channel of the RF device based on which swtiches are flipped
jacksacane 40:4f7d95c68d29 58 // by changing RX/TX pipes
Nurchu 27:08d34e60b6d0 59 // TODO: Make sure we don't have to restart the device or anything to change this
jacksacane 40:4f7d95c68d29 60 void setChannel() {
jacksacane 40:4f7d95c68d29 61 int width;
jacksacane 40:4f7d95c68d29 62 switch (channel) {
jacksacane 40:4f7d95c68d29 63 case 0: // Channel 0
jacksacane 40:4f7d95c68d29 64 rxAddr = txAddr = 0xE7D3F03577;
jacksacane 40:4f7d95c68d29 65 pipe = NRF24L01P_PIPE_P0;
jacksacane 40:4f7d95c68d29 66 width = 5;
jacksacane 40:4f7d95c68d29 67 break;
jacksacane 40:4f7d95c68d29 68 case 1: // Channel 1
jacksacane 40:4f7d95c68d29 69 rxAddr = txAddr = 0xC2C2C2C2C1;
jacksacane 40:4f7d95c68d29 70 pipe = NRF24L01P_PIPE_P1;
jacksacane 40:4f7d95c68d29 71 width = 5;
jacksacane 40:4f7d95c68d29 72 break;
jacksacane 40:4f7d95c68d29 73 case 2: // Channel 2
jacksacane 40:4f7d95c68d29 74 rxAddr = txAddr = 0xC2C2C2C2C2;
jacksacane 40:4f7d95c68d29 75 pipe = NRF24L01P_PIPE_P2;
jacksacane 40:4f7d95c68d29 76 width = 5;
jacksacane 40:4f7d95c68d29 77 break;
jacksacane 40:4f7d95c68d29 78 case 4: // Channel 3
jacksacane 40:4f7d95c68d29 79 rxAddr = txAddr = 0xC2C2C2C2C3;
jacksacane 40:4f7d95c68d29 80 pipe = NRF24L01P_PIPE_P3;
jacksacane 40:4f7d95c68d29 81 width = 5;
jacksacane 40:4f7d95c68d29 82 break;
jacksacane 40:4f7d95c68d29 83 case 8: // Channel 4
jacksacane 40:4f7d95c68d29 84 rxAddr = txAddr = 0xC2C2C2C2C4;
jacksacane 40:4f7d95c68d29 85 pipe = NRF24L01P_PIPE_P4;
jacksacane 40:4f7d95c68d29 86 width = 5;
jacksacane 40:4f7d95c68d29 87 break;
jacksacane 40:4f7d95c68d29 88 case 16: // Channel 5
jacksacane 40:4f7d95c68d29 89 rxAddr = txAddr = 0xC2C2C2C2C5;
jacksacane 40:4f7d95c68d29 90 pipe = NRF24L01P_PIPE_P5;
jacksacane 40:4f7d95c68d29 91 width = 5;
jacksacane 40:4f7d95c68d29 92 break;
jacksacane 40:4f7d95c68d29 93 default:
jacksacane 40:4f7d95c68d29 94 break;
jacksacane 40:4f7d95c68d29 95 }
Nurchu 27:08d34e60b6d0 96
jacksacane 40:4f7d95c68d29 97 my_nrf24l01p.setRxAddress(rxAddr, width, pipe);
jacksacane 40:4f7d95c68d29 98 my_nrf24l01p.setTxAddress(txAddr, width);
jacksacane 40:4f7d95c68d29 99
jacksacane 40:4f7d95c68d29 100 //pc.printf("Pipe = %d\r\n", pipe);
jacksacane 40:4f7d95c68d29 101
Nurchu 27:08d34e60b6d0 102 // TODO: Don't force it to the default RF frequency
jacksacane 40:4f7d95c68d29 103 //channelNum = 2;
Nurchu 27:08d34e60b6d0 104
jacksacane 40:4f7d95c68d29 105 //my_nrf24l01p.setRfFrequency(channelNum + NRF24L01P_MIN_RF_FREQUENCY);
Nurchu 27:08d34e60b6d0 106 }
drechtmann3 1:fc0a2c17e086 107
Nurchu 27:08d34e60b6d0 108 // Callback interrupt from the button to shift into transmit mode
Nurchu 27:08d34e60b6d0 109 void enterTransmitMode() {
Nurchu 27:08d34e60b6d0 110 mode = TRANSMIT;
Nurchu 33:5d86c111d9bc 111 txbuff.clear();
Nurchu 27:08d34e60b6d0 112 }
drechtmann3 1:fc0a2c17e086 113
Nurchu 27:08d34e60b6d0 114 // Callback interrupt from the button to shift into receive mode
Nurchu 27:08d34e60b6d0 115 void enterRecieveMode() {
Nurchu 27:08d34e60b6d0 116 mode = RECEIVE;
Nurchu 33:5d86c111d9bc 117 //TODO: Add this back in
Nurchu 33:5d86c111d9bc 118 //rxbuf.clear();
drechtmann3 10:a8fcfc869fa5 119 }
drechtmann3 1:fc0a2c17e086 120
Nurchu 27:08d34e60b6d0 121 // Called every SAMPLE_PERIOD ms to sample the mic or output data into the speaker
Nurchu 27:08d34e60b6d0 122 void sampleData()
Nurchu 12:efcfe4c0d9f2 123 {
Nurchu 27:08d34e60b6d0 124 // Depending on the mode, only sample the mic or output data to the speaker
Nurchu 27:08d34e60b6d0 125 if (mode == RECEIVE) {
Nurchu 27:08d34e60b6d0 126 // Get speaker sample from buffer
Nurchu 27:08d34e60b6d0 127 // If there is no data in the buffer, it will just output 0 to the write function
Nurchu 27:08d34e60b6d0 128 uint8_t speakerSample = 0;
Nurchu 27:08d34e60b6d0 129 rxbuff.pop(&speakerSample, 1);
Nurchu 27:08d34e60b6d0 130
Nurchu 27:08d34e60b6d0 131 // Output into the actual speaker
Nurchu 27:08d34e60b6d0 132 spkr.write(speakerSample);
Nurchu 27:08d34e60b6d0 133 } else {
Nurchu 27:08d34e60b6d0 134 // Get mic sample and place into buffer
Nurchu 33:5d86c111d9bc 135 uint8_t micSample = mic.getData();
Nurchu 27:08d34e60b6d0 136 txbuff.push(&micSample, 1);
Nurchu 12:efcfe4c0d9f2 137
Nurchu 27:08d34e60b6d0 138 // Make sure the speaker is actually off
Nurchu 27:08d34e60b6d0 139 spkr.turnOff();
Nurchu 27:08d34e60b6d0 140 }
Nurchu 27:08d34e60b6d0 141
Nurchu 27:08d34e60b6d0 142 // TODO: This will have to be removed later on once we actually crank up the sample rate
Nurchu 27:08d34e60b6d0 143 myled3 = !myled3;
Nurchu 27:08d34e60b6d0 144 }
drechtmann3 1:fc0a2c17e086 145
Nurchu 27:08d34e60b6d0 146 // Communicates to the other MBED using RF
Nurchu 27:08d34e60b6d0 147 void commThread()
Nurchu 27:08d34e60b6d0 148 {
Nurchu 29:0c6f3c0c992a 149 pc.printf("Enter commThread\n\r");
Nurchu 27:08d34e60b6d0 150 // We want this in it's own thread so we don't have to worry about the
Nurchu 27:08d34e60b6d0 151 // timings screwing anything else up
Nurchu 27:08d34e60b6d0 152 // It can't be in an interrupt because of that
Nurchu 27:08d34e60b6d0 153 while (true) {
Nurchu 27:08d34e60b6d0 154 // Change what we are sending based on what mode we are in
Nurchu 27:08d34e60b6d0 155 if (mode == RECEIVE) {
Nurchu 27:08d34e60b6d0 156 // Make sure something is there to read
Nurchu 27:08d34e60b6d0 157 if (my_nrf24l01p.readable( NRF24L01P_PIPE_P0 )) {
Nurchu 27:08d34e60b6d0 158 uint8_t spkrPacket[DATA_PACKET_SIZE];
Nurchu 27:08d34e60b6d0 159
Nurchu 27:08d34e60b6d0 160 // Remove entire packet of data from the bus
Nurchu 27:08d34e60b6d0 161 int numReceived = my_nrf24l01p.read( NRF24L01P_PIPE_P0, (char*) spkrPacket, DATA_PACKET_SIZE );
Nurchu 27:08d34e60b6d0 162
Nurchu 27:08d34e60b6d0 163 // Place into buffer to play speaker in another thread
Nurchu 27:08d34e60b6d0 164 // Only place into the buffer the number of bytes received
Nurchu 27:08d34e60b6d0 165 rxbuff.push(spkrPacket, min(DATA_PACKET_SIZE, numReceived));
Nurchu 27:08d34e60b6d0 166
jacksacane 40:4f7d95c68d29 167 //pc.printf("Receiviing....\n\r");
Nurchu 27:08d34e60b6d0 168 myled2 = !myled2;
Nurchu 27:08d34e60b6d0 169 }
Nurchu 27:08d34e60b6d0 170 } else { // mode == TRANSMIT
Nurchu 27:08d34e60b6d0 171 if (txbuff.size() >= DATA_PACKET_SIZE) {
Nurchu 27:08d34e60b6d0 172 uint8_t micPacket[DATA_PACKET_SIZE];
Nurchu 27:08d34e60b6d0 173
Nurchu 27:08d34e60b6d0 174 // Pull an entire packet of data from the mic sample buffer
Nurchu 27:08d34e60b6d0 175 int numPopped = txbuff.pop(micPacket, DATA_PACKET_SIZE);
Nurchu 33:5d86c111d9bc 176 rxbuff.push(micPacket, DATA_PACKET_SIZE);
Nurchu 27:08d34e60b6d0 177
Nurchu 27:08d34e60b6d0 178 // Send the entire buffer to the other device
Nurchu 27:08d34e60b6d0 179 // TODO: We just assume that DATA_PACKET_SIZE bytes were popped, this may
Nurchu 27:08d34e60b6d0 180 // not be the case
Nurchu 27:08d34e60b6d0 181 my_nrf24l01p.write( NRF24L01P_PIPE_P0, (char*) micPacket, DATA_PACKET_SIZE );
Nurchu 27:08d34e60b6d0 182
Nurchu 33:5d86c111d9bc 183 //for (int i = 0; i < DATA_PACKET_SIZE; i++) {
Nurchu 33:5d86c111d9bc 184 // pc.printf("%x", micPacket[i]);
Nurchu 33:5d86c111d9bc 185 //}
Nurchu 33:5d86c111d9bc 186 //pc.printf("\n\r");
Nurchu 33:5d86c111d9bc 187
Nurchu 33:5d86c111d9bc 188 //pc.printf("Transmitting....\n\r");
Nurchu 27:08d34e60b6d0 189 myled1 = !myled1;
Nurchu 27:08d34e60b6d0 190 }
drechtmann3 1:fc0a2c17e086 191 }
Nurchu 27:08d34e60b6d0 192
Nurchu 33:5d86c111d9bc 193 //pc.printf("TX Size %d RX Size%d Mode %d\n\r", txbuff.size(), rxbuff.size(), mode);
Nurchu 27:08d34e60b6d0 194 Thread::yield();
Nurchu 33:5d86c111d9bc 195 //Thread::wait(10);
Nurchu 12:efcfe4c0d9f2 196 }
Nurchu 12:efcfe4c0d9f2 197 }
drechtmann3 1:fc0a2c17e086 198
Nurchu 27:08d34e60b6d0 199 // Displays the current info to the LCD display
jacksacane 21:95009b231c1f 200 void lcdThread()
jacksacane 21:95009b231c1f 201 {
Nurchu 29:0c6f3c0c992a 202 pc.printf("Enter lcdThread\n\r");
jacksacane 21:95009b231c1f 203 while (1) {
Nurchu 29:0c6f3c0c992a 204 /*
jacksacane 21:95009b231c1f 205 uLCD.locate(64, 20);
jacksacane 21:95009b231c1f 206 uLCD.printf("Frequency: %d MHz", rfFreq);
jacksacane 21:95009b231c1f 207 uLCD.locate(64, 40);
jacksacane 21:95009b231c1f 208 uLCD.printf("Data Rate: %d kbps", dataRate);
jacksacane 21:95009b231c1f 209 uLCD.locate(64, 60);
jacksacane 21:95009b231c1f 210 uLCD.printf("TX Address: 0x%010llX", txAddr);
jacksacane 21:95009b231c1f 211 uLCD.locate(64, 80);
jacksacane 21:95009b231c1f 212 uLCD.printf("RX Address: 0x%010llX", rxAddr);
jacksacane 21:95009b231c1f 213 uLCD.locate(64, 100);
Nurchu 27:08d34e60b6d0 214
jacksacane 21:95009b231c1f 215 switch (mode) {
jacksacane 21:95009b231c1f 216 case RECEIVE:
jacksacane 21:95009b231c1f 217 uLCD.printf("Mode: Receiving");
jacksacane 21:95009b231c1f 218 break;
jacksacane 21:95009b231c1f 219 case TRANSMIT:
jacksacane 21:95009b231c1f 220 uLCD.printf("Mode: Transmitting");
jacksacane 21:95009b231c1f 221 break;
jacksacane 21:95009b231c1f 222 }
Nurchu 29:0c6f3c0c992a 223 */
jacksacane 21:95009b231c1f 224 // Maybe add some graphics too idk
Nurchu 33:5d86c111d9bc 225 Thread::wait(500);
jacksacane 21:95009b231c1f 226 }
jacksacane 21:95009b231c1f 227 }
jacksacane 21:95009b231c1f 228
Nurchu 12:efcfe4c0d9f2 229 int main()
Nurchu 12:efcfe4c0d9f2 230 {
Nurchu 27:08d34e60b6d0 231 Thread lcd;
Nurchu 27:08d34e60b6d0 232 Thread comm;
jacksacane 21:95009b231c1f 233
Nurchu 33:5d86c111d9bc 234 pc.printf("Starting setup....\n\r");
Nurchu 33:5d86c111d9bc 235
Nurchu 27:08d34e60b6d0 236 // Set up the nrf24l01p
jacksacane 21:95009b231c1f 237 rfFreq = my_nrf24l01p.getRfFrequency();
jacksacane 21:95009b231c1f 238 dataRate = my_nrf24l01p.getAirDataRate();
jacksacane 21:95009b231c1f 239 rxAddr = my_nrf24l01p.getRxAddress();
jacksacane 21:95009b231c1f 240 txAddr = my_nrf24l01p.getTxAddress();
jacksacane 21:95009b231c1f 241
Nurchu 27:08d34e60b6d0 242 my_nrf24l01p.setTransferSize(DATA_PACKET_SIZE);
jacksacane 21:95009b231c1f 243
jacksacane 21:95009b231c1f 244 my_nrf24l01p.setReceiveMode();
jacksacane 21:95009b231c1f 245 my_nrf24l01p.enable();
jacksacane 21:95009b231c1f 246
jacksacane 40:4f7d95c68d29 247 pc.printf( "nRF24L01+ Frequency : %d MHz\r\n", rfFreq );
jacksacane 40:4f7d95c68d29 248 pc.printf( "nRF24L01+ Output power : %d dBm\r\n", my_nrf24l01p.getRfOutputPower() );
jacksacane 40:4f7d95c68d29 249 pc.printf( "nRF24L01+ Data Rate : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
jacksacane 40:4f7d95c68d29 250 pc.printf( "nRF24L01+ TX Address : 0x%010llX\r\n", txAddr );
jacksacane 40:4f7d95c68d29 251 pc.printf( "nRF24L01+ RX Address : 0x%010llX\r\n", rxAddr );
jacksacane 40:4f7d95c68d29 252
Nurchu 27:08d34e60b6d0 253 pc.printf("Finished starting up....\n\r");
Nurchu 27:08d34e60b6d0 254
jacksacane 22:e835b3490280 255 mode = RECEIVE;
jacksacane 22:e835b3490280 256
jacksacane 21:95009b231c1f 257 // Initialize the uLCD
Nurchu 29:0c6f3c0c992a 258 //uLCD.baudrate(3000000);
Nurchu 29:0c6f3c0c992a 259 //uLCD.background_color(BLACK);
jacksacane 21:95009b231c1f 260
jacksacane 21:95009b231c1f 261 // Spawn threads
jacksacane 21:95009b231c1f 262 lcd.start(lcdThread);
Nurchu 27:08d34e60b6d0 263 comm.start(commThread);
jacksacane 21:95009b231c1f 264
Nurchu 27:08d34e60b6d0 265 // Setup the button to enter transmit mode when pushed down
Nurchu 27:08d34e60b6d0 266 // and recieve when release
jacksacane 28:9413eb50156d 267 button.mode(PullUp);
Nurchu 31:39d04aedc3e5 268 button.fall(&enterTransmitMode);
Nurchu 31:39d04aedc3e5 269 button.rise(&enterRecieveMode);
Nurchu 27:08d34e60b6d0 270
Nurchu 27:08d34e60b6d0 271 // Setup sampler to sample at a specific frequency
Nurchu 31:39d04aedc3e5 272 sampler.attach(&sampleData, SAMPLE_PERIOD);
Nurchu 27:08d34e60b6d0 273
Nurchu 29:0c6f3c0c992a 274 pc.printf("Enter Heartbeat\n\r");
Nurchu 27:08d34e60b6d0 275 // Heartbeat thread
drechtmann3 1:fc0a2c17e086 276 while (1) {
Nurchu 27:08d34e60b6d0 277 myled4 = !myled4;
jacksacane 40:4f7d95c68d29 278 setChannel(); // Poll the DIP switch and change channels accordingly
Nurchu 27:08d34e60b6d0 279 Thread::wait(100);
Nurchu 12:efcfe4c0d9f2 280 }
Nurchu 12:efcfe4c0d9f2 281 }