pradeep shekhar / Mbed 2 deprecated Beacon_BAE_integration

for testing

Dependencies:   mbed

main.cpp@2:9b4647a9558c, 2015-10-28 (annotated)

Committer:
shekhar
Date:
Wed Oct 28 13:31:18 2015 +0000
Revision:
2:9b4647a9558c
Parent:
1:24f2092e3add
Child:
3:3572f6b06485
Added few wait()s

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shekhar 0:a93f830eae68 1 #include "beacon.h"
shekhar 0:a93f830eae68 2 #include <stdio.h>
shekhar 2:9b4647a9558c 3 //Takes approx. 4.3 sec in void FCTN_BCN_TX_MAIN() (temp.calc. + long_beacon + short_beacon)
shekhar 0:a93f830eae68 4
shekhar 0:a93f830eae68 5 Serial pc(USBTX, USBRX); //tx,rx
shekhar 0:a93f830eae68 6 SPI spi(D11, D12, D13); // mosi, miso, sclk
shekhar 0:a93f830eae68 7 DigitalOut cs(D10); //slave select or chip select
shekhar 0:a93f830eae68 8 Timer t;
shekhar 0:a93f830eae68 9 Timer t_i;
shekhar 0:a93f830eae68 10 Ticker loop;
shekhar 0:a93f830eae68 11
shekhar 2:9b4647a9558c 12 //GLOBAL VARIABLES
shekhar 2:9b4647a9558c 13 uint8_t BCN_INIT_STATUS = 0;
shekhar 2:9b4647a9558c 14 uint8_t BCN_TX_MAIN_STATUS = 0;
shekhar 2:9b4647a9558c 15 uint8_t BCN_TX_STATUS = 0;
shekhar 2:9b4647a9558c 16 uint8_t BCN_TX_EN = 1; //hardcoding for now //check where is this variable toggled??
shekhar 2:9b4647a9558c 17 uint8_t BCN_FEN = 0; //write this to non-erasable memory.
shekhar 2:9b4647a9558c 18 uint8_t BCN_STANDBY = 0; //hardcoding for now //check where is this variable toggled??
shekhar 2:9b4647a9558c 19 uint8_t BCN_TS_BUFFER = 0; // For Temperature
shekhar 2:9b4647a9558c 20
shekhar 2:9b4647a9558c 21 void FCTN_BCN_INIT()
shekhar 0:a93f830eae68 22 {
shekhar 2:9b4647a9558c 23 //t_i.start();
shekhar 2:9b4647a9558c 24 pc.printf("FCTN_BCN_INIT\n");
shekhar 0:a93f830eae68 25 BCN_INIT_STATUS = 1;
shekhar 0:a93f830eae68 26 Init_BEACON_HW();
shekhar 0:a93f830eae68 27 if (BCN_FEN == 0)
shekhar 0:a93f830eae68 28 t.start();//Start the timer for RF_Silence
shekhar 0:a93f830eae68 29 BCN_INIT_STATUS = 0;
shekhar 0:a93f830eae68 30 }
shekhar 2:9b4647a9558c 31 void FCTN_BCN_FEN()
shekhar 0:a93f830eae68 32 {
shekhar 2:9b4647a9558c 33 pc.printf("FCTN_FEN\n");
shekhar 0:a93f830eae68 34 BCN_FEN = 1;//write this value to flash
shekhar 0:a93f830eae68 35 }
shekhar 2:9b4647a9558c 36 void FCTN_BCN_TX_MAIN()
shekhar 0:a93f830eae68 37 {
shekhar 2:9b4647a9558c 38 pc.printf("FCTN_BCN_TX_MAIN\n");
shekhar 2:9b4647a9558c 39 t_i.start();
shekhar 2:9b4647a9558c 40 int begin = t_i.read_us();
shekhar 0:a93f830eae68 41 BCN_TX_MAIN_STATUS = 1;
shekhar 0:a93f830eae68 42
shekhar 0:a93f830eae68 43 if(BCN_FEN == 1)
shekhar 0:a93f830eae68 44 {
shekhar 0:a93f830eae68 45 if(BCN_TX_EN == 1)
shekhar 0:a93f830eae68 46 {
shekhar 0:a93f830eae68 47 //Measure and store BCN temperature in BCN_TS_BUFFER
shekhar 0:a93f830eae68 48 BCN_TS_BUFFER = check_Temperature();
shekhar 2:9b4647a9558c 49 //pc.printf("\n\ntemperature = %d\n\n",BCN_TS_BUFFER);
shekhar 0:a93f830eae68 50 //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER
shekhar 0:a93f830eae68 51 if(BCN_STANDBY == 1 )
shekhar 0:a93f830eae68 52 {
shekhar 0:a93f830eae68 53 Set_BCN_TX_STATUS(BCN_TX_STANDBY);
shekhar 0:a93f830eae68 54 BCN_TX_MAIN_STATUS = 0;
shekhar 0:a93f830eae68 55
shekhar 0:a93f830eae68 56 // break;
shekhar 0:a93f830eae68 57 }
shekhar 0:a93f830eae68 58 else
shekhar 0:a93f830eae68 59 {
shekhar 0:a93f830eae68 60 //transmit short beacon and long beacon
shekhar 0:a93f830eae68 61 SHORT_BCN_TX();
shekhar 0:a93f830eae68 62 LONG_BCN_TX();
shekhar 0:a93f830eae68 63
shekhar 0:a93f830eae68 64 if(Check_ACK_RECEIVED() == 1)
shekhar 0:a93f830eae68 65 {
shekhar 0:a93f830eae68 66 Set_BCN_TX_STATUS(BCN_TX_SUCCESS);
shekhar 0:a93f830eae68 67 BCN_TX_MAIN_STATUS = 0;
shekhar 0:a93f830eae68 68 }
shekhar 0:a93f830eae68 69 else
shekhar 0:a93f830eae68 70 {
shekhar 0:a93f830eae68 71 Set_BCN_TX_STATUS(BCN_TX_FAILURE);
shekhar 0:a93f830eae68 72 BCN_TX_MAIN_STATUS = 0;
shekhar 0:a93f830eae68 73
shekhar 0:a93f830eae68 74 }
shekhar 0:a93f830eae68 75 }
shekhar 0:a93f830eae68 76 }
shekhar 0:a93f830eae68 77 else
shekhar 0:a93f830eae68 78 {
shekhar 0:a93f830eae68 79 Set_BCN_TX_STATUS(BCN_TX_DISABLED);
shekhar 0:a93f830eae68 80 BCN_TX_MAIN_STATUS = 0;
shekhar 0:a93f830eae68 81 }
shekhar 0:a93f830eae68 82 }
shekhar 0:a93f830eae68 83 else
shekhar 0:a93f830eae68 84 {
shekhar 0:a93f830eae68 85 Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on.
shekhar 0:a93f830eae68 86 BCN_TX_MAIN_STATUS = 0;
shekhar 0:a93f830eae68 87 }
shekhar 2:9b4647a9558c 88 t_i.stop();
shekhar 2:9b4647a9558c 89 int end = t_i.read_us();
shekhar 2:9b4647a9558c 90 pc.printf("The time required for short and long is %d seconds\r\n", end-begin);
shekhar 2:9b4647a9558c 91
shekhar 0:a93f830eae68 92 }
shekhar 0:a93f830eae68 93
shekhar 0:a93f830eae68 94 void Set_BCN_TX_STATUS(uint8_t STATUS)
shekhar 0:a93f830eae68 95 {
shekhar 0:a93f830eae68 96 BCN_TX_STATUS = STATUS;
shekhar 0:a93f830eae68 97 }
shekhar 0:a93f830eae68 98
shekhar 0:a93f830eae68 99 uint8_t check_Temperature()
shekhar 0:a93f830eae68 100 {
shekhar 0:a93f830eae68 101 uint8_t temperature;
shekhar 0:a93f830eae68 102 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80);
shekhar 0:a93f830eae68 103 writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x20);
shekhar 2:9b4647a9558c 104 wait(0.1);
shekhar 0:a93f830eae68 105 temperature = readreg(RF22_REG_11_ADC_Value);
shekhar 0:a93f830eae68 106 temperature = (float)temperature*0.5 - 64;
shekhar 0:a93f830eae68 107 return temperature;
shekhar 0:a93f830eae68 108 }
shekhar 0:a93f830eae68 109
shekhar 0:a93f830eae68 110 void SHORT_BCN_TX()
shekhar 0:a93f830eae68 111 {
shekhar 0:a93f830eae68 112 writereg(RF22_REG_6E_TX_DATA_RATE,0x01);
shekhar 0:a93f830eae68 113 writereg(RF22_REG_6F_TX_DATA_RATE,0x4F);//160bps
shekhar 2:9b4647a9558c 114 writereg(RF22_REG_3E_PACKET_LENGTH,SHORT_TX_DATA); //short packet length
shekhar 2:9b4647a9558c 115 wait(0.02);
shekhar 2:9b4647a9558c 116
shekhar 1:24f2092e3add 117 //extract values from short_beacon[]
shekhar 0:a93f830eae68 118 struct Short_beacon
shekhar 0:a93f830eae68 119 {
shekhar 0:a93f830eae68 120 uint8_t Voltage[1];
shekhar 0:a93f830eae68 121 uint8_t AngularSpeed[2];
shekhar 0:a93f830eae68 122 uint8_t SubsystemStatus[1];
shekhar 0:a93f830eae68 123 uint8_t Temp[3];
shekhar 0:a93f830eae68 124 uint8_t ErrorFlag[1];
shekhar 0:a93f830eae68 125 }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} };
shekhar 0:a93f830eae68 126
shekhar 0:a93f830eae68 127 //filling hk data
shekhar 1:24f2092e3add 128 //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:a93f830eae68 129 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 2:9b4647a9558c 130
shekhar 1:24f2092e3add 131 //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ??
shekhar 0:a93f830eae68 132 clearTxBuf();
shekhar 0:a93f830eae68 133 //writing data first time
shekhar 1:24f2092e3add 134 int byte = 0;
shekhar 0:a93f830eae68 135 cs = 0;
shekhar 0:a93f830eae68 136 spi.write(0xFF);
shekhar 2:9b4647a9558c 137
shekhar 0:a93f830eae68 138 for (int byte_counter = 0; byte_counter <15 ; byte_counter++)
shekhar 0:a93f830eae68 139 {
shekhar 0:a93f830eae68 140 for(int j = 3; j >= 0 ; j--)
shekhar 0:a93f830eae68 141 {
shekhar 0:a93f830eae68 142 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,(j*2+1)))!= pow(2.0,(j*2+1)))
shekhar 0:a93f830eae68 143 {
shekhar 0:a93f830eae68 144 byte=0x00;
shekhar 0:a93f830eae68 145 }
shekhar 0:a93f830eae68 146 else
shekhar 0:a93f830eae68 147 {
shekhar 0:a93f830eae68 148 byte=0xF0;
shekhar 0:a93f830eae68 149 }
shekhar 0:a93f830eae68 150 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j*2))!= pow(2.0,j*2))
shekhar 0:a93f830eae68 151 {
shekhar 0:a93f830eae68 152 byte=byte | 0x00;
shekhar 0:a93f830eae68 153 }
shekhar 0:a93f830eae68 154 else
shekhar 0:a93f830eae68 155 {
shekhar 0:a93f830eae68 156 byte=byte | 0x0F;
shekhar 0:a93f830eae68 157 }
shekhar 0:a93f830eae68 158 spi.write(byte);
shekhar 0:a93f830eae68 159 }
shekhar 0:a93f830eae68 160 }
shekhar 0:a93f830eae68 161
shekhar 0:a93f830eae68 162 cs = 1;
shekhar 2:9b4647a9558c 163
shekhar 0:a93f830eae68 164 //Set to Tx mode
shekhar 0:a93f830eae68 165 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 2:9b4647a9558c 166 wait(0.1);
shekhar 0:a93f830eae68 167 //Check for fifoThresh
shekhar 0:a93f830eae68 168 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 2:9b4647a9558c 169
shekhar 2:9b4647a9558c 170
shekhar 2:9b4647a9558c 171 //Check for packet_sent
shekhar 0:a93f830eae68 172 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04);
shekhar 2:9b4647a9558c 173
shekhar 2:9b4647a9558c 174 //pc.printf("Short packet sent\r\n");
shekhar 0:a93f830eae68 175
shekhar 0:a93f830eae68 176 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:a93f830eae68 177
shekhar 0:a93f830eae68 178 }
shekhar 0:a93f830eae68 179 void LONG_BCN_TX()
shekhar 0:a93f830eae68 180 {
shekhar 0:a93f830eae68 181 writereg(RF22_REG_6E_TX_DATA_RATE,0x04);
shekhar 0:a93f830eae68 182 writereg(RF22_REG_6F_TX_DATA_RATE,0xEA);//600 bps
shekhar 0:a93f830eae68 183 writereg(RF22_REG_3E_PACKET_LENGTH,LONG_TX_DATA); //long packet length
shekhar 0:a93f830eae68 184 wait(0.02);
shekhar 0:a93f830eae68 185
shekhar 0:a93f830eae68 186
shekhar 0:a93f830eae68 187 //get long_beacon array
shekhar 0:a93f830eae68 188
shekhar 0:a93f830eae68 189 uint8_t Long_beacon[75];
shekhar 0:a93f830eae68 190 for(int i = 0;i<75;i++)
shekhar 0:a93f830eae68 191 {
shekhar 0:a93f830eae68 192 Long_beacon[i] = 0xA0;
shekhar 0:a93f830eae68 193 }
shekhar 0:a93f830eae68 194
shekhar 0:a93f830eae68 195
shekhar 0:a93f830eae68 196
shekhar 0:a93f830eae68 197
shekhar 0:a93f830eae68 198 //setModeIdle();
shekhar 0:a93f830eae68 199 writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode
shekhar 0:a93f830eae68 200 clearTxBuf();
shekhar 0:a93f830eae68 201 //writing data first time
shekhar 0:a93f830eae68 202 cs = 0;
shekhar 0:a93f830eae68 203 spi.write(0xFF);
shekhar 0:a93f830eae68 204 for(int i=0; i<60;i++)
shekhar 0:a93f830eae68 205 {
shekhar 0:a93f830eae68 206 spi.write(Long_beacon[i]);
shekhar 0:a93f830eae68 207 }
shekhar 0:a93f830eae68 208 cs = 1;
shekhar 0:a93f830eae68 209
shekhar 0:a93f830eae68 210 //Set to Tx mode
shekhar 0:a93f830eae68 211 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 2:9b4647a9558c 212 wait(0.1);
shekhar 0:a93f830eae68 213 //Check for fifoThresh
shekhar 0:a93f830eae68 214 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:a93f830eae68 215
shekhar 0:a93f830eae68 216 cs = 0;
shekhar 0:a93f830eae68 217 spi.write(0xFF);
shekhar 0:a93f830eae68 218 for(int i=60; i<75;i++)
shekhar 0:a93f830eae68 219 {
shekhar 0:a93f830eae68 220 spi.write(Long_beacon[i]);
shekhar 0:a93f830eae68 221 }
shekhar 0:a93f830eae68 222 cs = 1;
shekhar 2:9b4647a9558c 223 wait(0.1);
shekhar 0:a93f830eae68 224 //Check for fifoThresh
shekhar 0:a93f830eae68 225 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:a93f830eae68 226
shekhar 0:a93f830eae68 227 //Check for packetsent interrupt
shekhar 0:a93f830eae68 228 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04);
shekhar 0:a93f830eae68 229
shekhar 2:9b4647a9558c 230 //pc.printf("Long packet sent\r\n");
shekhar 0:a93f830eae68 231
shekhar 0:a93f830eae68 232 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:a93f830eae68 233 }
shekhar 0:a93f830eae68 234 void reset_uC()
shekhar 0:a93f830eae68 235 {
shekhar 2:9b4647a9558c 236 FCTN_BCN_INIT();
shekhar 0:a93f830eae68 237 }
shekhar 0:a93f830eae68 238 void writereg(uint8_t reg,uint8_t val)
shekhar 0:a93f830eae68 239 {
shekhar 0:a93f830eae68 240 uint8_t count = 0;
shekhar 0:a93f830eae68 241 for(;;count++)
shekhar 0:a93f830eae68 242 {
shekhar 0:a93f830eae68 243 int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1;
shekhar 0:a93f830eae68 244 if(reg != 0x7 && reg != 0x58 && reg != 0xF)
shekhar 0:a93f830eae68 245 {
shekhar 0:a93f830eae68 246 read_val = readreg(reg);
shekhar 0:a93f830eae68 247 if (read_val == val)
shekhar 0:a93f830eae68 248 {
shekhar 0:a93f830eae68 249 break;
shekhar 0:a93f830eae68 250 }
shekhar 0:a93f830eae68 251 else if(count == 5)
shekhar 0:a93f830eae68 252 {
shekhar 0:a93f830eae68 253 reset_uC(), printf("reg = 0x%X\n",reg);break;
shekhar 0:a93f830eae68 254 }
shekhar 0:a93f830eae68 255 }
shekhar 0:a93f830eae68 256 else
shekhar 0:a93f830eae68 257 break;
shekhar 0:a93f830eae68 258 }
shekhar 0:a93f830eae68 259 }
shekhar 0:a93f830eae68 260 uint8_t readreg(uint8_t reg)
shekhar 0:a93f830eae68 261 {
shekhar 0:a93f830eae68 262 uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val;
shekhar 0:a93f830eae68 263 }
shekhar 0:a93f830eae68 264 void clearTxBuf()
shekhar 0:a93f830eae68 265 {
shekhar 0:a93f830eae68 266 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
shekhar 0:a93f830eae68 267 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
shekhar 0:a93f830eae68 268 }
shekhar 0:a93f830eae68 269 uint8_t setFrequency(double centre,float afcPullInRange)
shekhar 0:a93f830eae68 270 {
shekhar 0:a93f830eae68 271 uint8_t fbsel = 0x40;
shekhar 0:a93f830eae68 272 uint8_t afclimiter;
shekhar 0:a93f830eae68 273 if (centre >= 480.0) {
shekhar 0:a93f830eae68 274 centre /= 2;
shekhar 0:a93f830eae68 275 fbsel |= 0x20;
shekhar 0:a93f830eae68 276 afclimiter = afcPullInRange * 1000000.0 / 1250.0;
shekhar 0:a93f830eae68 277 } else {
shekhar 0:a93f830eae68 278 if (afcPullInRange < 0.0 || afcPullInRange > 0.159375)
shekhar 0:a93f830eae68 279 return false;
shekhar 0:a93f830eae68 280 afclimiter = afcPullInRange * 1000000.0 / 625.0;
shekhar 0:a93f830eae68 281 }
shekhar 0:a93f830eae68 282 centre /= 10.0;
shekhar 0:a93f830eae68 283 double integerPart = floor(centre);
shekhar 0:a93f830eae68 284 double fractionalPart = centre - integerPart;
shekhar 0:a93f830eae68 285
shekhar 0:a93f830eae68 286 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
shekhar 0:a93f830eae68 287 fbsel |= fb;
shekhar 0:a93f830eae68 288 uint16_t fc = fractionalPart * 64000;
shekhar 0:a93f830eae68 289 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
shekhar 0:a93f830eae68 290 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
shekhar 0:a93f830eae68 291 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
shekhar 0:a93f830eae68 292 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
shekhar 0:a93f830eae68 293 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
shekhar 0:a93f830eae68 294 writereg(RF22_REG_2A_AFC_LIMITER, afclimiter);
shekhar 0:a93f830eae68 295 return 0;
shekhar 0:a93f830eae68 296 }
shekhar 0:a93f830eae68 297
shekhar 0:a93f830eae68 298
shekhar 0:a93f830eae68 299 void Init_BEACON_HW()
shekhar 0:a93f830eae68 300 {
shekhar 2:9b4647a9558c 301 wait(0.1);
shekhar 0:a93f830eae68 302 cs=1; // chip must be deselected
shekhar 2:9b4647a9558c 303 wait(0.1);
shekhar 0:a93f830eae68 304 spi.format(8,0);
shekhar 0:a93f830eae68 305 spi.frequency(10000000); //10MHz SCLK
shekhar 0:a93f830eae68 306
shekhar 0:a93f830eae68 307 //should either have a flag for invalid SPI or discard this for actual case or add reset
shekhar 0:a93f830eae68 308 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08)
shekhar 2:9b4647a9558c 309 pc.printf("spi connection valid\r\n");
shekhar 0:a93f830eae68 310 else
shekhar 2:9b4647a9558c 311 {pc.printf("error in spi connection\r\n");
shekhar 0:a93f830eae68 312 reset_uC();
shekhar 0:a93f830eae68 313 }
shekhar 0:a93f830eae68 314
shekhar 0:a93f830eae68 315 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
shekhar 2:9b4647a9558c 316 wait(0.1); //takes time to reset
shekhar 0:a93f830eae68 317
shekhar 0:a93f830eae68 318 clearTxBuf();
shekhar 0:a93f830eae68 319
shekhar 0:a93f830eae68 320 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:a93f830eae68 321
shekhar 0:a93f830eae68 322 //txfifoalmostempty
shekhar 0:a93f830eae68 323 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30);
shekhar 0:a93f830eae68 324
shekhar 0:a93f830eae68 325 //Packet-engine registers
shekhar 0:a93f830eae68 326 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00);
shekhar 0:a93f830eae68 327
shekhar 0:a93f830eae68 328 writereg(RF22_REG_33_HEADER_CONTROL2,0x08);
shekhar 0:a93f830eae68 329 writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00);
shekhar 0:a93f830eae68 330
shekhar 0:a93f830eae68 331 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state
shekhar 0:a93f830eae68 332 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state
shekhar 0:a93f830eae68 333
shekhar 0:a93f830eae68 334 setFrequency(435.0,05);
shekhar 0:a93f830eae68 335
shekhar 0:a93f830eae68 336 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
shekhar 0:a93f830eae68 337 {
shekhar 2:9b4647a9558c 338 pc.printf("frequency not set properly\r\n");
shekhar 0:a93f830eae68 339 reset_uC();
shekhar 0:a93f830eae68 340 }
shekhar 0:a93f830eae68 341
shekhar 0:a93f830eae68 342 //set Modem Configuration
shekhar 0:a93f830eae68 343 writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0xdf);
shekhar 0:a93f830eae68 344 writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03);
shekhar 0:a93f830eae68 345 writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x39);
shekhar 0:a93f830eae68 346 writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x20);
shekhar 0:a93f830eae68 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:a93f830eae68 348 writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0xdc);
shekhar 0:a93f830eae68 349 writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00);
shekhar 0:a93f830eae68 350 writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x6B);
shekhar 0:a93f830eae68 351 writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2C);
shekhar 0:a93f830eae68 352 writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x11); //not required for fsk (OOK counter value)
shekhar 0:a93f830eae68 353 writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x2A); //??
shekhar 0:a93f830eae68 354 writereg(RF22_REG_58,0x80);
shekhar 0:a93f830eae68 355 writereg(RF22_REG_69_AGC_OVERRIDE1,0x60);
shekhar 0:a93f830eae68 356
shekhar 0:a93f830eae68 357 //Data rate set later
shekhar 0:a93f830eae68 358
shekhar 0:a93f830eae68 359 writereg(RF22_REG_70_MODULATION_CONTROL1,0x20);
shekhar 0:a93f830eae68 360 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21
shekhar 0:a93f830eae68 361
shekhar 0:a93f830eae68 362 //set tx power
shekhar 0:a93f830eae68 363 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
shekhar 0:a93f830eae68 364
shekhar 0:a93f830eae68 365 //TX_packet_length written later
shekhar 0:a93f830eae68 366 }
shekhar 0:a93f830eae68 367 bool Check_ACK_RECEIVED()
shekhar 0:a93f830eae68 368 {
shekhar 0:a93f830eae68 369 if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)
shekhar 0:a93f830eae68 370 {
shekhar 0:a93f830eae68 371 printf("Packet sent: ACK received\r\n");
shekhar 0:a93f830eae68 372 return 1;
shekhar 0:a93f830eae68 373 }
shekhar 0:a93f830eae68 374 else
shekhar 0:a93f830eae68 375 {
shekhar 0:a93f830eae68 376 pc.printf("Packet not sent\r\n");
shekhar 0:a93f830eae68 377 return 0;
shekhar 0:a93f830eae68 378 }
shekhar 0:a93f830eae68 379 }
shekhar 0:a93f830eae68 380 int main()
shekhar 0:a93f830eae68 381 {
shekhar 2:9b4647a9558c 382 FCTN_BCN_INIT();
shekhar 0:a93f830eae68 383
shekhar 2:9b4647a9558c 384 loop.attach(&FCTN_BCN_TX_MAIN, 10.0);//in actual case its 30.0
shekhar 0:a93f830eae68 385
shekhar 0:a93f830eae68 386 while(t.read() < RF_SILENCE_TIME);
shekhar 0:a93f830eae68 387
shekhar 2:9b4647a9558c 388 FCTN_BCN_FEN();
shekhar 0:a93f830eae68 389
shekhar 0:a93f830eae68 390 while(1);
shekhar 0:a93f830eae68 391
shekhar 0:a93f830eae68 392 }