pradeep shekhar / Mbed 2 deprecated Beacon_GS_integration

for GS integration

Dependencies:   mbed

main.cpp@0:b4106205ed03, 2015-10-26 (annotated)

Committer:
shekhar
Date:
Mon Oct 26 08:16:03 2015 +0000
Revision:
0:b4106205ed03
Integration done. This is the working code;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shekhar 0:b4106205ed03 1 #include "tx.h"
shekhar 0:b4106205ed03 2 #include <stdio.h>
shekhar 0:b4106205ed03 3
shekhar 0:b4106205ed03 4 Ticker loop;
shekhar 0:b4106205ed03 5 Serial pc(USBTX, USBRX); //tx,rx
shekhar 0:b4106205ed03 6 SPI spi(D11, D12, D13); // mosi, miso, sclk
shekhar 0:b4106205ed03 7 DigitalOut cs(D10); //slave select or chip select
shekhar 0:b4106205ed03 8
shekhar 0:b4106205ed03 9 Timer t;
shekhar 0:b4106205ed03 10
shekhar 0:b4106205ed03 11 void P_BCN_INIT()
shekhar 0:b4106205ed03 12 {
shekhar 0:b4106205ed03 13 BCN_INIT_STATUS = 1;
shekhar 0:b4106205ed03 14 //check initialization parameters
shekhar 0:b4106205ed03 15 Init_BEACON_HW();
shekhar 0:b4106205ed03 16 //t.start();
shekhar 0:b4106205ed03 17 BCN_INIT_STATUS = 0;
shekhar 0:b4106205ed03 18 }
shekhar 0:b4106205ed03 19 void P_BCN_FEN()
shekhar 0:b4106205ed03 20 {
shekhar 0:b4106205ed03 21 BCN_FEN = 1;
shekhar 0:b4106205ed03 22 }
shekhar 0:b4106205ed03 23 void P_BCN_TX_MAIN()
shekhar 0:b4106205ed03 24 {
shekhar 0:b4106205ed03 25 pc.printf("line 25");
shekhar 0:b4106205ed03 26 BCN_TX_MAIN_STATUS = 1;
shekhar 0:b4106205ed03 27
shekhar 0:b4106205ed03 28 if(BCN_FEN == 1)
shekhar 0:b4106205ed03 29 {
shekhar 0:b4106205ed03 30 pc.printf("line 30");
shekhar 0:b4106205ed03 31 if(BCN_TX_EN == 1)
shekhar 0:b4106205ed03 32 {
shekhar 0:b4106205ed03 33 pc.printf("line 33");
shekhar 0:b4106205ed03 34 //Measure and store BCN temperature in BCN_TS_BUFFER
shekhar 0:b4106205ed03 35 BCN_TS_BUFFER = check_Temperature();
shekhar 0:b4106205ed03 36 pc.printf("\n\ntemperature = %d\n\n",BCN_TS_BUFFER);
shekhar 0:b4106205ed03 37 pc.printf("line 36");
shekhar 0:b4106205ed03 38 //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER
shekhar 0:b4106205ed03 39 if(BCN_STANDBY == 1 )
shekhar 0:b4106205ed03 40 {
shekhar 0:b4106205ed03 41 pc.printf("line 40");
shekhar 0:b4106205ed03 42 Set_BCN_TX_STATUS(BCN_TX_STANDBY);
shekhar 0:b4106205ed03 43 BCN_TX_MAIN_STATUS = 0;
shekhar 0:b4106205ed03 44
shekhar 0:b4106205ed03 45 // break;
shekhar 0:b4106205ed03 46 }
shekhar 0:b4106205ed03 47 else
shekhar 0:b4106205ed03 48 {
shekhar 0:b4106205ed03 49 //pc.printf("in BCN_TX_STANDBY != 1\r\n");
shekhar 0:b4106205ed03 50 pc.printf("line 49");
shekhar 0:b4106205ed03 51 t.start();
shekhar 0:b4106205ed03 52 int begin = t.read_us();
shekhar 0:b4106205ed03 53 //pc.printf("line 52");
shekhar 0:b4106205ed03 54 SHORT_BCN_TX();
shekhar 0:b4106205ed03 55 LONG_BCN_TX();
shekhar 0:b4106205ed03 56 //pc.printf("line 55");
shekhar 0:b4106205ed03 57 t.stop();
shekhar 0:b4106205ed03 58 int end = t.read_us();
shekhar 0:b4106205ed03 59 pc.printf("\n\nThe time required for short and long is %d seconds\r\n\n", end-begin);
shekhar 0:b4106205ed03 60 pc.printf("Short and Long packets sent\r\n");
shekhar 0:b4106205ed03 61 //include LONG_BCN_TX also
shekhar 0:b4106205ed03 62 if(Check_ACK_RECEIVED() == 1)
shekhar 0:b4106205ed03 63 {
shekhar 0:b4106205ed03 64 Set_BCN_TX_STATUS(BCN_TX_SUCCESS);
shekhar 0:b4106205ed03 65 BCN_TX_MAIN_STATUS = 0;
shekhar 0:b4106205ed03 66 // break;
shekhar 0:b4106205ed03 67
shekhar 0:b4106205ed03 68 }
shekhar 0:b4106205ed03 69 else
shekhar 0:b4106205ed03 70 {
shekhar 0:b4106205ed03 71 Set_BCN_TX_STATUS(BCN_TX_FAILURE);
shekhar 0:b4106205ed03 72 BCN_TX_MAIN_STATUS = 0;
shekhar 0:b4106205ed03 73 // break;
shekhar 0:b4106205ed03 74
shekhar 0:b4106205ed03 75 }
shekhar 0:b4106205ed03 76 }
shekhar 0:b4106205ed03 77 }
shekhar 0:b4106205ed03 78 else
shekhar 0:b4106205ed03 79 {
shekhar 0:b4106205ed03 80 Set_BCN_TX_STATUS(BCN_TX_DISABLED);
shekhar 0:b4106205ed03 81 BCN_TX_MAIN_STATUS = 0;
shekhar 0:b4106205ed03 82 // break;
shekhar 0:b4106205ed03 83
shekhar 0:b4106205ed03 84 }
shekhar 0:b4106205ed03 85 }
shekhar 0:b4106205ed03 86 else
shekhar 0:b4106205ed03 87 {
shekhar 0:b4106205ed03 88 Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on.
shekhar 0:b4106205ed03 89 BCN_TX_MAIN_STATUS = 0;
shekhar 0:b4106205ed03 90 // break;
shekhar 0:b4106205ed03 91 }
shekhar 0:b4106205ed03 92 }
shekhar 0:b4106205ed03 93
shekhar 0:b4106205ed03 94 void Set_BCN_TX_STATUS(uint8_t STATUS)
shekhar 0:b4106205ed03 95 {
shekhar 0:b4106205ed03 96 BCN_TX_STATUS = STATUS;
shekhar 0:b4106205ed03 97 }
shekhar 0:b4106205ed03 98
shekhar 0:b4106205ed03 99 int check_Temperature()
shekhar 0:b4106205ed03 100 {
shekhar 0:b4106205ed03 101 int temperature;
shekhar 0:b4106205ed03 102 //P_BCN_INIT();
shekhar 0:b4106205ed03 103 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80); //128 = 10000000
shekhar 0:b4106205ed03 104 writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x20); //160 == 10100000 32 == 00100000
shekhar 0:b4106205ed03 105 wait(1);
shekhar 0:b4106205ed03 106 temperature = readreg(RF22_REG_11_ADC_Value);
shekhar 0:b4106205ed03 107 temperature = (float)temperature*0.5 - 64;
shekhar 0:b4106205ed03 108 return temperature;
shekhar 0:b4106205ed03 109 }
shekhar 0:b4106205ed03 110 void SHORT_BCN_TX()
shekhar 0:b4106205ed03 111 {
shekhar 0:b4106205ed03 112 writereg(RF22_REG_6E_TX_DATA_RATE,0x01);
shekhar 0:b4106205ed03 113 writereg(RF22_REG_6F_TX_DATA_RATE,0x4F);//160bps
shekhar 0:b4106205ed03 114 writereg(RF22_REG_3E_PACKET_LENGTH,SHORT_TX_DATA); //short packet length
shekhar 0:b4106205ed03 115 /*
shekhar 0:b4106205ed03 116 init();
shekhar 0:b4106205ed03 117 //init complete
shekhar 0:b4106205ed03 118 pc.printf("init complete.....press t to send\n");
shekhar 0:b4106205ed03 119 while(pc.getc()=='t')
shekhar 0:b4106205ed03 120 { */
shekhar 0:b4106205ed03 121 //button.rise(&interrupt_func); //interrupt enabled ( rising edge of pin 9)
shekhar 0:b4106205ed03 122 wait(0.02); // pl. update this value or even avoid it!!!
shekhar 0:b4106205ed03 123 int i=0;
shekhar 0:b4106205ed03 124
shekhar 0:b4106205ed03 125 //extract values from short_beacon[]
shekhar 0:b4106205ed03 126 struct Short_beacon
shekhar 0:b4106205ed03 127 {
shekhar 0:b4106205ed03 128 uint8_t Voltage[1];
shekhar 0:b4106205ed03 129 uint8_t AngularSpeed[2];
shekhar 0:b4106205ed03 130 uint8_t SubsystemStatus[1];
shekhar 0:b4106205ed03 131 uint8_t Temp[3];
shekhar 0:b4106205ed03 132 uint8_t ErrorFlag[1];
shekhar 0:b4106205ed03 133 }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} };
shekhar 0:b4106205ed03 134
shekhar 0:b4106205ed03 135 //filling hk data
shekhar 0:b4106205ed03 136 uint8_t short_beacon[] = { 0xAB, 0x8A, 0xE2, 0xBB, 0xB8, 0xA2, 0x8E,Shortbeacon.Voltage[0],Shortbeacon.AngularSpeed[0], Shortbeacon.AngularSpeed[1],Shortbeacon.SubsystemStatus[0],Shortbeacon.Temp[0],Shortbeacon.Temp[1],Shortbeacon.Temp[2],Shortbeacon.ErrorFlag[0]};
shekhar 0:b4106205ed03 137 //uint8_t short_beacon[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,Shortbeacon.Voltage[0],Shortbeacon.AngularSpeed[0], Shortbeacon.AngularSpeed[1],Shortbeacon.SubsystemStatus[0],Shortbeacon.Temp[0],Shortbeacon.Temp[1],Shortbeacon.Temp[2],Shortbeacon.ErrorFlag[0]};
shekhar 0:b4106205ed03 138
shekhar 0:b4106205ed03 139 /*uint8_t short_beacon[15];
shekhar 0:b4106205ed03 140 for(int i = 0;i<15;i++)
shekhar 0:b4106205ed03 141 {
shekhar 0:b4106205ed03 142 short_beacon[i] = 0xAA;
shekhar 0:b4106205ed03 143 }*/
shekhar 0:b4106205ed03 144
shekhar 0:b4106205ed03 145 //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ??
shekhar 0:b4106205ed03 146 clearTxBuf();
shekhar 0:b4106205ed03 147 //writing data first time
shekhar 0:b4106205ed03 148 int byte = 0;
shekhar 0:b4106205ed03 149 cs = 0;
shekhar 0:b4106205ed03 150 spi.write(0xFF);
shekhar 0:b4106205ed03 151 //pc.printf("line 151");
shekhar 0:b4106205ed03 152 for (int byte_counter = 0; byte_counter <15 ; byte_counter++)
shekhar 0:b4106205ed03 153 {
shekhar 0:b4106205ed03 154 for(int j = 3; j >= 0 ; j--)
shekhar 0:b4106205ed03 155 {
shekhar 0:b4106205ed03 156 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,(j*2+1)))!= pow(2.0,(j*2+1)))
shekhar 0:b4106205ed03 157 {
shekhar 0:b4106205ed03 158 byte=0x00;
shekhar 0:b4106205ed03 159 }
shekhar 0:b4106205ed03 160 else
shekhar 0:b4106205ed03 161 {
shekhar 0:b4106205ed03 162 byte=0xF0;
shekhar 0:b4106205ed03 163 }
shekhar 0:b4106205ed03 164 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j*2))!= pow(2.0,j*2))
shekhar 0:b4106205ed03 165 {
shekhar 0:b4106205ed03 166 byte=byte | 0x00;
shekhar 0:b4106205ed03 167 }
shekhar 0:b4106205ed03 168 else
shekhar 0:b4106205ed03 169 {
shekhar 0:b4106205ed03 170 byte=byte | 0x0F;
shekhar 0:b4106205ed03 171 }
shekhar 0:b4106205ed03 172 spi.write(byte);
shekhar 0:b4106205ed03 173 }
shekhar 0:b4106205ed03 174 }
shekhar 0:b4106205ed03 175
shekhar 0:b4106205ed03 176 cs = 1;
shekhar 0:b4106205ed03 177 //pc.printf("line 177\n");
shekhar 0:b4106205ed03 178 //Set to Tx mode
shekhar 0:b4106205ed03 179 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 0:b4106205ed03 180
shekhar 0:b4106205ed03 181 //Check for fifoThresh
shekhar 0:b4106205ed03 182 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:b4106205ed03 183 //pc.printf("fifothresh1?\n");
shekhar 0:b4106205ed03 184 //pc.printf("line 184\n");
shekhar 0:b4106205ed03 185 //rf22.waitPacketSent();
shekhar 0:b4106205ed03 186 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04);
shekhar 0:b4106205ed03 187 //pc.printf(" chk pkt sent!\r\n");
shekhar 0:b4106205ed03 188 //pc.printf("Short packet sent\r\n");
shekhar 0:b4106205ed03 189
shekhar 0:b4106205ed03 190 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:b4106205ed03 191
shekhar 0:b4106205ed03 192 }
shekhar 0:b4106205ed03 193 void LONG_BCN_TX()
shekhar 0:b4106205ed03 194 {
shekhar 0:b4106205ed03 195 writereg(RF22_REG_6E_TX_DATA_RATE,0x04);
shekhar 0:b4106205ed03 196 writereg(RF22_REG_6F_TX_DATA_RATE,0xEA);
shekhar 0:b4106205ed03 197 writereg(RF22_REG_3E_PACKET_LENGTH,LONG_TX_DATA); //long packet length
shekhar 0:b4106205ed03 198 wait(0.02); // pl. update this value or even avoid it!!!
shekhar 0:b4106205ed03 199 //extract values from long_beacon[]
shekhar 0:b4106205ed03 200
shekhar 0:b4106205ed03 201 //uint8_t Long_beacon[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,Longbeacon.Voltage[0],Longbeacon.AngularSpeed[0], Longbeacon.AngularSpeed[1],Longbeacon.SubsystemStatus[0],Longbeacon.Temp[0],Longbeacon.Temp[1],Longbeacon.Temp[2],Longbeacon.ErrorFlag[0]};
shekhar 0:b4106205ed03 202
shekhar 0:b4106205ed03 203 uint8_t Long_beacon[75];
shekhar 0:b4106205ed03 204 for(int i = 0;i<75;)
shekhar 0:b4106205ed03 205 {
shekhar 0:b4106205ed03 206 Long_beacon[i++] = 0xAB;Long_beacon[i++] = 0xCD;Long_beacon[i++] = 0xAB;Long_beacon[i++] = 0xCD;Long_beacon[i++] = 0x00;
shekhar 0:b4106205ed03 207 }
shekhar 0:b4106205ed03 208
shekhar 0:b4106205ed03 209 //setModeIdle();
shekhar 0:b4106205ed03 210 writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode
shekhar 0:b4106205ed03 211 clearTxBuf();
shekhar 0:b4106205ed03 212 //writing data first time
shekhar 0:b4106205ed03 213 cs = 0;
shekhar 0:b4106205ed03 214 spi.write(0xFF);
shekhar 0:b4106205ed03 215 for(int i=0; i<60;i++)
shekhar 0:b4106205ed03 216 {
shekhar 0:b4106205ed03 217 spi.write(Long_beacon[i]);
shekhar 0:b4106205ed03 218 }
shekhar 0:b4106205ed03 219 cs = 1;
shekhar 0:b4106205ed03 220
shekhar 0:b4106205ed03 221 //Set to Tx mode
shekhar 0:b4106205ed03 222 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 0:b4106205ed03 223
shekhar 0:b4106205ed03 224 //Check for fifoThresh
shekhar 0:b4106205ed03 225 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:b4106205ed03 226 //pc.printf("fifothresh1?\n");
shekhar 0:b4106205ed03 227 //writing data first time
shekhar 0:b4106205ed03 228 cs = 0;
shekhar 0:b4106205ed03 229 spi.write(0xFF);
shekhar 0:b4106205ed03 230 for(int i=60; i<75;i++)
shekhar 0:b4106205ed03 231 {
shekhar 0:b4106205ed03 232 spi.write(Long_beacon[i]);
shekhar 0:b4106205ed03 233 }
shekhar 0:b4106205ed03 234 cs = 1;
shekhar 0:b4106205ed03 235 wait(0.01);
shekhar 0:b4106205ed03 236 //Check for fifoThresh
shekhar 0:b4106205ed03 237 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:b4106205ed03 238 //pc.printf("fifothresh2?\n");
shekhar 0:b4106205ed03 239 //rf22.waitPacketSent();
shekhar 0:b4106205ed03 240 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04);
shekhar 0:b4106205ed03 241 //pc.printf(" chk pkt sent!]\r\n");
shekhar 0:b4106205ed03 242 pc.printf("Long packet sent\r\n");
shekhar 0:b4106205ed03 243 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:b4106205ed03 244 }
shekhar 0:b4106205ed03 245 void reset_uC()
shekhar 0:b4106205ed03 246 {
shekhar 0:b4106205ed03 247 printf("reset uC");
shekhar 0:b4106205ed03 248 }
shekhar 0:b4106205ed03 249 void writereg(uint8_t reg,uint8_t val)
shekhar 0:b4106205ed03 250 {
shekhar 0:b4106205ed03 251 int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1;// wait(1);read_val = readreg(reg);if(read_val != val) {reset_uC();pc.printf("value for 0x%X written incorrectly to the uC\n",reg);}
shekhar 0:b4106205ed03 252 }
shekhar 0:b4106205ed03 253 uint8_t readreg(uint8_t reg)
shekhar 0:b4106205ed03 254 {
shekhar 0:b4106205ed03 255 int val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val;
shekhar 0:b4106205ed03 256 }
shekhar 0:b4106205ed03 257 void clearTxBuf()
shekhar 0:b4106205ed03 258 {
shekhar 0:b4106205ed03 259 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
shekhar 0:b4106205ed03 260 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
shekhar 0:b4106205ed03 261 }
shekhar 0:b4106205ed03 262 int setFrequency(double centre,float afcPullInRange)
shekhar 0:b4106205ed03 263 {
shekhar 0:b4106205ed03 264 //freq setting begins
shekhar 0:b4106205ed03 265 uint8_t fbsel = 0x40;
shekhar 0:b4106205ed03 266 uint8_t afclimiter;
shekhar 0:b4106205ed03 267 if (centre >= 480.0) {
shekhar 0:b4106205ed03 268 centre /= 2;
shekhar 0:b4106205ed03 269 fbsel |= 0x20;
shekhar 0:b4106205ed03 270 afclimiter = afcPullInRange * 1000000.0 / 1250.0;
shekhar 0:b4106205ed03 271 } else {
shekhar 0:b4106205ed03 272 if (afcPullInRange < 0.0 || afcPullInRange > 0.159375)
shekhar 0:b4106205ed03 273 return false;
shekhar 0:b4106205ed03 274 afclimiter = afcPullInRange * 1000000.0 / 625.0;
shekhar 0:b4106205ed03 275 }
shekhar 0:b4106205ed03 276 centre /= 10.0;
shekhar 0:b4106205ed03 277 double integerPart = floor(centre);
shekhar 0:b4106205ed03 278 double fractionalPart = centre - integerPart;
shekhar 0:b4106205ed03 279
shekhar 0:b4106205ed03 280 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
shekhar 0:b4106205ed03 281 fbsel |= fb;
shekhar 0:b4106205ed03 282 uint16_t fc = fractionalPart * 64000;
shekhar 0:b4106205ed03 283 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
shekhar 0:b4106205ed03 284 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
shekhar 0:b4106205ed03 285 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
shekhar 0:b4106205ed03 286 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
shekhar 0:b4106205ed03 287 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
shekhar 0:b4106205ed03 288 writereg(RF22_REG_2A_AFC_LIMITER, afclimiter);
shekhar 0:b4106205ed03 289 return 0;
shekhar 0:b4106205ed03 290 }
shekhar 0:b4106205ed03 291 void Init_BEACON_HW()
shekhar 0:b4106205ed03 292 {
shekhar 0:b4106205ed03 293 cs=1; // chip must be deselected
shekhar 0:b4106205ed03 294 //wait(1); //change the time later
shekhar 0:b4106205ed03 295 spi.format(8,0);
shekhar 0:b4106205ed03 296 spi.frequency(10000000); //10MHz SCLK
shekhar 0:b4106205ed03 297
shekhar 0:b4106205ed03 298 //should either have a flag for invalid SPI or discard this for actual case or add reset
shekhar 0:b4106205ed03 299 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08)
shekhar 0:b4106205ed03 300 pc.printf("spi connection valid\r\n");
shekhar 0:b4106205ed03 301 else
shekhar 0:b4106205ed03 302 pc.printf("error in spi connection\r\n");
shekhar 0:b4106205ed03 303 //reset()
shekhar 0:b4106205ed03 304
shekhar 0:b4106205ed03 305
shekhar 0:b4106205ed03 306 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
shekhar 0:b4106205ed03 307 wait(1); //takes time to reset
shekhar 0:b4106205ed03 308
shekhar 0:b4106205ed03 309 clearTxBuf();
shekhar 0:b4106205ed03 310
shekhar 0:b4106205ed03 311 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:b4106205ed03 312
shekhar 0:b4106205ed03 313 //txfifoalmostempty
shekhar 0:b4106205ed03 314 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30);
shekhar 0:b4106205ed03 315
shekhar 0:b4106205ed03 316 //Packet-engine registers
shekhar 0:b4106205ed03 317 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00); //RF22_REG_30_DATA_ACCESS_CONTROL, RF22_ENPACRX | RF22_ENPACTX | RF22_ENCRC | RF22_CRC_CRC_16_IBM
shekhar 0:b4106205ed03 318 //&0x77 = diasable packet rx-tx handling
shekhar 0:b4106205ed03 319
shekhar 0:b4106205ed03 320 writereg(RF22_REG_33_HEADER_CONTROL2,0x08); //RF22_REG_33_HEADER_CONTROL2, RF22_HDLEN_4 | RF22_SYNCLEN_2
shekhar 0:b4106205ed03 321 writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00); //RF22_REG_34_PREAMBLE_LENGTH, nibbles); preamble length = 8;
shekhar 0:b4106205ed03 322 //may be redundant since packethandler is disabled
shekhar 0:b4106205ed03 323
shekhar 0:b4106205ed03 324 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state ??
shekhar 0:b4106205ed03 325 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state ??
shekhar 0:b4106205ed03 326
shekhar 0:b4106205ed03 327 //interrupts
shekhar 0:b4106205ed03 328 // spiWrite(RF22_REG_05_INTERRUPT_ENABLE1, RF22_ENTXFFAEM |RF22_ENRXFFAFULL | RF22_ENPKSENT |RF22_ENPKVALID| RF22_ENCRCERROR);
shekhar 0:b4106205ed03 329 // spiWrite(RF22_REG_06_INTERRUPT_ENABLE2, RF22_ENPREAVAL);
shekhar 0:b4106205ed03 330
shekhar 0:b4106205ed03 331 setFrequency(435.00015625,0.05);//435.000156.25, observed = 434.99818100
shekhar 0:b4106205ed03 332
shekhar 0:b4106205ed03 333 //This may not be required
shekhar 0:b4106205ed03 334 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
shekhar 0:b4106205ed03 335 {pc.printf("frequency not set properly\r\n");reset_uC();}
shekhar 0:b4106205ed03 336
shekhar 0:b4106205ed03 337 //frequency set
shekhar 0:b4106205ed03 338
shekhar 0:b4106205ed03 339 //setModemConfig(FSK_Rb2_4Fd36); FSK_Rb2_4Fd36, ///< FSK, No Manchester, Rb = 2.4kbs, Fd = 36kHz
shekhar 0:b4106205ed03 340 //setmodemregisters
shekhar 0:b4106205ed03 341 //0x1b, 0x03, 0x41, 0x60, 0x27, 0x52, 0x00, 0x07, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x22, 0x3a = FSK_RB2_4FD36
shekhar 0:b4106205ed03 342 //0xc8, 0x03, 0x39, 0x20, 0x68, 0xdc, 0x00, 0x6b, 0x2a, 0x08, 0x2a, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x21, 0x08 = OOK,2.4, 335
shekhar 0:b4106205ed03 343 writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0xdf);
shekhar 0:b4106205ed03 344 writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03);
shekhar 0:b4106205ed03 345 writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x39);
shekhar 0:b4106205ed03 346 writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x20);
shekhar 0:b4106205ed03 347 writereg(RF22_REG_22_CLOCK_RECOVERY_OFFSET1,0x68); //updated 20 to 25 reg values from excel sheet for 1.2 Khz freq. deviation,fsk
shekhar 0:b4106205ed03 348 writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0xdc);
shekhar 0:b4106205ed03 349 writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00);
shekhar 0:b4106205ed03 350 writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x6B);
shekhar 0:b4106205ed03 351 writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2C);
shekhar 0:b4106205ed03 352 writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x11); //not required for fsk (OOK counter value)
shekhar 0:b4106205ed03 353 writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x2A); //??
shekhar 0:b4106205ed03 354 writereg(RF22_REG_58,0x80);
shekhar 0:b4106205ed03 355 writereg(RF22_REG_69_AGC_OVERRIDE1,0x60);
shekhar 0:b4106205ed03 356
shekhar 0:b4106205ed03 357
shekhar 0:b4106205ed03 358 //writereg(RF22_REG_6E_TX_DATA_RATE_0.125_1,0x09);//written later
shekhar 0:b4106205ed03 359 //writereg(RF22_REG_6F_TX_DATA_RATE_0.125_0,0xd5);//written later
shekhar 0:b4106205ed03 360
shekhar 0:b4106205ed03 361 writereg(RF22_REG_70_MODULATION_CONTROL1,0x20);//changed from 0x2c to 0x20 since machester is not required
shekhar 0:b4106205ed03 362 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21 //fsk = 0x22
shekhar 0:b4106205ed03 363
shekhar 0:b4106205ed03 364 //writereg(RF22_REG_72_FREQUENCY_DEVIATION,0x50);
shekhar 0:b4106205ed03 365 //required for OOK???
shekhar 0:b4106205ed03 366
shekhar 0:b4106205ed03 367 //set tx power
shekhar 0:b4106205ed03 368 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
shekhar 0:b4106205ed03 369 //why 0x06?? 0x07 is for max//is the previous bits required?
shekhar 0:b4106205ed03 370
shekhar 0:b4106205ed03 371 //writereg(RF22_REG_3E_PACKET_LENGTH,SHORT_TX_DATA); //short packet length //written later
shekhar 0:b4106205ed03 372 }
shekhar 0:b4106205ed03 373 bool Check_ACK_RECEIVED()
shekhar 0:b4106205ed03 374 {
shekhar 0:b4106205ed03 375 //logic:
shekhar 0:b4106205ed03 376 if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04) //bit is set if the data packet is sent correctly
shekhar 0:b4106205ed03 377 {
shekhar 0:b4106205ed03 378 printf("Packet sent: ACK received\r\n");
shekhar 0:b4106205ed03 379 return 1; //for ACK received: yes
shekhar 0:b4106205ed03 380
shekhar 0:b4106205ed03 381 }
shekhar 0:b4106205ed03 382 else
shekhar 0:b4106205ed03 383 {
shekhar 0:b4106205ed03 384 pc.printf("Packet not sent\r\n");
shekhar 0:b4106205ed03 385 return 0; //actual value
shekhar 0:b4106205ed03 386 //return 1; //to make this function work in any condition //Why??
shekhar 0:b4106205ed03 387
shekhar 0:b4106205ed03 388 }
shekhar 0:b4106205ed03 389 }
shekhar 0:b4106205ed03 390 int main()
shekhar 0:b4106205ed03 391 {
shekhar 0:b4106205ed03 392
shekhar 0:b4106205ed03 393 pc.printf("entered main");
shekhar 0:b4106205ed03 394 int temp, final_temp;
shekhar 0:b4106205ed03 395
shekhar 0:b4106205ed03 396 P_BCN_INIT();
shekhar 0:b4106205ed03 397 pc.printf("completed bcn_init");
shekhar 0:b4106205ed03 398
shekhar 0:b4106205ed03 399 P_BCN_FEN();
shekhar 0:b4106205ed03 400 pc.printf("press 't' to start...");
shekhar 0:b4106205ed03 401 //while(1)
shekhar 0:b4106205ed03 402 //{
shekhar 0:b4106205ed03 403 t.start();
shekhar 0:b4106205ed03 404 int begin = t.read_us();
shekhar 0:b4106205ed03 405 //SHORT_BCN_TX();
shekhar 0:b4106205ed03 406 //LONG_BCN_TX();
shekhar 0:b4106205ed03 407 P_BCN_TX_MAIN();
shekhar 0:b4106205ed03 408 t.stop();
shekhar 0:b4106205ed03 409 int end = t.read_us();
shekhar 0:b4106205ed03 410 pc.printf("\n\nThe time taken : %d seconds\r\n\n", end-begin);
shekhar 0:b4106205ed03 411 pc.printf("packets sent\r\n");
shekhar 0:b4106205ed03 412 //P_BCN_TX_MAIN();
shekhar 0:b4106205ed03 413 //}
shekhar 0:b4106205ed03 414
shekhar 0:b4106205ed03 415 }