pradeep shekhar / Mbed 2 deprecated Beacon_BAE_integration

for testing

Dependencies:   mbed

main.cpp@3:3572f6b06485, 2015-10-28 (annotated)

Committer:
shekhar
Date:
Wed Oct 28 14:41:35 2015 +0000
Revision:
3:3572f6b06485
Parent:
2:9b4647a9558c 
added timeout for while loops

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 3:3572f6b06485 3 //Takes max 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 3:3572f6b06485 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 3:3572f6b06485 115 wait(0.02);
shekhar 3:3572f6b06485 116
shekhar 3:3572f6b06485 117 uint32_t timeout_count = 10e5;
shekhar 1:24f2092e3add 118 //extract values from short_beacon[]
shekhar 3:3572f6b06485 119
shekhar 0:a93f830eae68 120 struct Short_beacon
shekhar 0:a93f830eae68 121 {
shekhar 0:a93f830eae68 122 uint8_t Voltage[1];
shekhar 0:a93f830eae68 123 uint8_t AngularSpeed[2];
shekhar 0:a93f830eae68 124 uint8_t SubsystemStatus[1];
shekhar 0:a93f830eae68 125 uint8_t Temp[3];
shekhar 0:a93f830eae68 126 uint8_t ErrorFlag[1];
shekhar 0:a93f830eae68 127 }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} };
shekhar 0:a93f830eae68 128
shekhar 0:a93f830eae68 129 //filling hk data
shekhar 1:24f2092e3add 130 //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 131 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 132
shekhar 1:24f2092e3add 133 //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ??
shekhar 0:a93f830eae68 134 clearTxBuf();
shekhar 0:a93f830eae68 135 //writing data first time
shekhar 1:24f2092e3add 136 int byte = 0;
shekhar 0:a93f830eae68 137 cs = 0;
shekhar 0:a93f830eae68 138 spi.write(0xFF);
shekhar 2:9b4647a9558c 139
shekhar 0:a93f830eae68 140 for (int byte_counter = 0; byte_counter <15 ; byte_counter++)
shekhar 0:a93f830eae68 141 {
shekhar 0:a93f830eae68 142 for(int j = 3; j >= 0 ; j--)
shekhar 0:a93f830eae68 143 {
shekhar 0:a93f830eae68 144 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,(j*2+1)))!= pow(2.0,(j*2+1)))
shekhar 0:a93f830eae68 145 {
shekhar 0:a93f830eae68 146 byte=0x00;
shekhar 0:a93f830eae68 147 }
shekhar 0:a93f830eae68 148 else
shekhar 0:a93f830eae68 149 {
shekhar 0:a93f830eae68 150 byte=0xF0;
shekhar 0:a93f830eae68 151 }
shekhar 0:a93f830eae68 152 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j*2))!= pow(2.0,j*2))
shekhar 0:a93f830eae68 153 {
shekhar 0:a93f830eae68 154 byte=byte | 0x00;
shekhar 0:a93f830eae68 155 }
shekhar 0:a93f830eae68 156 else
shekhar 0:a93f830eae68 157 {
shekhar 0:a93f830eae68 158 byte=byte | 0x0F;
shekhar 0:a93f830eae68 159 }
shekhar 0:a93f830eae68 160 spi.write(byte);
shekhar 0:a93f830eae68 161 }
shekhar 0:a93f830eae68 162 }
shekhar 0:a93f830eae68 163
shekhar 0:a93f830eae68 164 cs = 1;
shekhar 2:9b4647a9558c 165
shekhar 0:a93f830eae68 166 //Set to Tx mode
shekhar 0:a93f830eae68 167 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 2:9b4647a9558c 168 wait(0.1);
shekhar 0:a93f830eae68 169 //Check for fifoThresh
shekhar 3:3572f6b06485 170 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
shekhar 3:3572f6b06485 171 timeout_count=10e5;
shekhar 3:3572f6b06485 172
shekhar 2:9b4647a9558c 173 //Check for packet_sent
shekhar 3:3572f6b06485 174 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;
shekhar 2:9b4647a9558c 175
shekhar 2:9b4647a9558c 176 //pc.printf("Short packet sent\r\n");
shekhar 0:a93f830eae68 177
shekhar 0:a93f830eae68 178 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:a93f830eae68 179
shekhar 0:a93f830eae68 180 }
shekhar 0:a93f830eae68 181 void LONG_BCN_TX()
shekhar 0:a93f830eae68 182 {
shekhar 0:a93f830eae68 183 writereg(RF22_REG_6E_TX_DATA_RATE,0x04);
shekhar 0:a93f830eae68 184 writereg(RF22_REG_6F_TX_DATA_RATE,0xEA);//600 bps
shekhar 0:a93f830eae68 185 writereg(RF22_REG_3E_PACKET_LENGTH,LONG_TX_DATA); //long packet length
shekhar 0:a93f830eae68 186 wait(0.02);
shekhar 3:3572f6b06485 187 uint32_t timeout_count=10e5;
shekhar 0:a93f830eae68 188
shekhar 0:a93f830eae68 189 //get long_beacon array
shekhar 0:a93f830eae68 190
shekhar 0:a93f830eae68 191 uint8_t Long_beacon[75];
shekhar 0:a93f830eae68 192 for(int i = 0;i<75;i++)
shekhar 0:a93f830eae68 193 {
shekhar 0:a93f830eae68 194 Long_beacon[i] = 0xA0;
shekhar 0:a93f830eae68 195 }
shekhar 0:a93f830eae68 196
shekhar 0:a93f830eae68 197
shekhar 0:a93f830eae68 198
shekhar 0:a93f830eae68 199
shekhar 0:a93f830eae68 200 //setModeIdle();
shekhar 0:a93f830eae68 201 writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode
shekhar 0:a93f830eae68 202 clearTxBuf();
shekhar 0:a93f830eae68 203 //writing data first time
shekhar 0:a93f830eae68 204 cs = 0;
shekhar 0:a93f830eae68 205 spi.write(0xFF);
shekhar 0:a93f830eae68 206 for(int i=0; i<60;i++)
shekhar 0:a93f830eae68 207 {
shekhar 0:a93f830eae68 208 spi.write(Long_beacon[i]);
shekhar 0:a93f830eae68 209 }
shekhar 0:a93f830eae68 210 cs = 1;
shekhar 0:a93f830eae68 211
shekhar 0:a93f830eae68 212 //Set to Tx mode
shekhar 0:a93f830eae68 213 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 2:9b4647a9558c 214 wait(0.1);
shekhar 3:3572f6b06485 215
shekhar 0:a93f830eae68 216 //Check for fifoThresh
shekhar 3:3572f6b06485 217 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
shekhar 3:3572f6b06485 218 timeout_count=10e5;
shekhar 0:a93f830eae68 219
shekhar 0:a93f830eae68 220 cs = 0;
shekhar 0:a93f830eae68 221 spi.write(0xFF);
shekhar 0:a93f830eae68 222 for(int i=60; i<75;i++)
shekhar 0:a93f830eae68 223 {
shekhar 0:a93f830eae68 224 spi.write(Long_beacon[i]);
shekhar 0:a93f830eae68 225 }
shekhar 0:a93f830eae68 226 cs = 1;
shekhar 2:9b4647a9558c 227 wait(0.1);
shekhar 0:a93f830eae68 228 //Check for fifoThresh
shekhar 3:3572f6b06485 229 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
shekhar 3:3572f6b06485 230 timeout_count=10e5;
shekhar 0:a93f830eae68 231
shekhar 0:a93f830eae68 232 //Check for packetsent interrupt
shekhar 3:3572f6b06485 233 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;
shekhar 0:a93f830eae68 234
shekhar 2:9b4647a9558c 235 //pc.printf("Long packet sent\r\n");
shekhar 0:a93f830eae68 236
shekhar 0:a93f830eae68 237 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:a93f830eae68 238 }
shekhar 0:a93f830eae68 239 void reset_uC()
shekhar 0:a93f830eae68 240 {
shekhar 2:9b4647a9558c 241 FCTN_BCN_INIT();
shekhar 0:a93f830eae68 242 }
shekhar 0:a93f830eae68 243 void writereg(uint8_t reg,uint8_t val)
shekhar 0:a93f830eae68 244 {
shekhar 0:a93f830eae68 245 uint8_t count = 0;
shekhar 0:a93f830eae68 246 for(;;count++)
shekhar 0:a93f830eae68 247 {
shekhar 0:a93f830eae68 248 int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1;
shekhar 0:a93f830eae68 249 if(reg != 0x7 && reg != 0x58 && reg != 0xF)
shekhar 0:a93f830eae68 250 {
shekhar 0:a93f830eae68 251 read_val = readreg(reg);
shekhar 0:a93f830eae68 252 if (read_val == val)
shekhar 0:a93f830eae68 253 {
shekhar 0:a93f830eae68 254 break;
shekhar 0:a93f830eae68 255 }
shekhar 0:a93f830eae68 256 else if(count == 5)
shekhar 0:a93f830eae68 257 {
shekhar 0:a93f830eae68 258 reset_uC(), printf("reg = 0x%X\n",reg);break;
shekhar 0:a93f830eae68 259 }
shekhar 0:a93f830eae68 260 }
shekhar 0:a93f830eae68 261 else
shekhar 0:a93f830eae68 262 break;
shekhar 0:a93f830eae68 263 }
shekhar 0:a93f830eae68 264 }
shekhar 0:a93f830eae68 265 uint8_t readreg(uint8_t reg)
shekhar 0:a93f830eae68 266 {
shekhar 0:a93f830eae68 267 uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val;
shekhar 0:a93f830eae68 268 }
shekhar 0:a93f830eae68 269 void clearTxBuf()
shekhar 0:a93f830eae68 270 {
shekhar 0:a93f830eae68 271 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
shekhar 0:a93f830eae68 272 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
shekhar 0:a93f830eae68 273 }
shekhar 0:a93f830eae68 274 uint8_t setFrequency(double centre,float afcPullInRange)
shekhar 0:a93f830eae68 275 {
shekhar 0:a93f830eae68 276 uint8_t fbsel = 0x40;
shekhar 0:a93f830eae68 277 uint8_t afclimiter;
shekhar 0:a93f830eae68 278 if (centre >= 480.0) {
shekhar 0:a93f830eae68 279 centre /= 2;
shekhar 0:a93f830eae68 280 fbsel |= 0x20;
shekhar 0:a93f830eae68 281 afclimiter = afcPullInRange * 1000000.0 / 1250.0;
shekhar 0:a93f830eae68 282 } else {
shekhar 0:a93f830eae68 283 if (afcPullInRange < 0.0 || afcPullInRange > 0.159375)
shekhar 0:a93f830eae68 284 return false;
shekhar 0:a93f830eae68 285 afclimiter = afcPullInRange * 1000000.0 / 625.0;
shekhar 0:a93f830eae68 286 }
shekhar 0:a93f830eae68 287 centre /= 10.0;
shekhar 0:a93f830eae68 288 double integerPart = floor(centre);
shekhar 0:a93f830eae68 289 double fractionalPart = centre - integerPart;
shekhar 0:a93f830eae68 290
shekhar 0:a93f830eae68 291 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
shekhar 0:a93f830eae68 292 fbsel |= fb;
shekhar 0:a93f830eae68 293 uint16_t fc = fractionalPart * 64000;
shekhar 0:a93f830eae68 294 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
shekhar 0:a93f830eae68 295 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
shekhar 0:a93f830eae68 296 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
shekhar 0:a93f830eae68 297 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
shekhar 0:a93f830eae68 298 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
shekhar 0:a93f830eae68 299 writereg(RF22_REG_2A_AFC_LIMITER, afclimiter);
shekhar 0:a93f830eae68 300 return 0;
shekhar 0:a93f830eae68 301 }
shekhar 0:a93f830eae68 302
shekhar 0:a93f830eae68 303
shekhar 0:a93f830eae68 304 void Init_BEACON_HW()
shekhar 0:a93f830eae68 305 {
shekhar 2:9b4647a9558c 306 wait(0.1);
shekhar 0:a93f830eae68 307 cs=1; // chip must be deselected
shekhar 2:9b4647a9558c 308 wait(0.1);
shekhar 0:a93f830eae68 309 spi.format(8,0);
shekhar 0:a93f830eae68 310 spi.frequency(10000000); //10MHz SCLK
shekhar 0:a93f830eae68 311
shekhar 0:a93f830eae68 312 //should either have a flag for invalid SPI or discard this for actual case or add reset
shekhar 0:a93f830eae68 313 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08)
shekhar 2:9b4647a9558c 314 pc.printf("spi connection valid\r\n");
shekhar 0:a93f830eae68 315 else
shekhar 2:9b4647a9558c 316 {pc.printf("error in spi connection\r\n");
shekhar 0:a93f830eae68 317 reset_uC();
shekhar 0:a93f830eae68 318 }
shekhar 0:a93f830eae68 319
shekhar 0:a93f830eae68 320 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
shekhar 2:9b4647a9558c 321 wait(0.1); //takes time to reset
shekhar 0:a93f830eae68 322
shekhar 0:a93f830eae68 323 clearTxBuf();
shekhar 0:a93f830eae68 324
shekhar 0:a93f830eae68 325 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 0:a93f830eae68 326
shekhar 0:a93f830eae68 327 //txfifoalmostempty
shekhar 0:a93f830eae68 328 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30);
shekhar 0:a93f830eae68 329
shekhar 0:a93f830eae68 330 //Packet-engine registers
shekhar 0:a93f830eae68 331 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00);
shekhar 0:a93f830eae68 332
shekhar 0:a93f830eae68 333 writereg(RF22_REG_33_HEADER_CONTROL2,0x08);
shekhar 0:a93f830eae68 334 writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00);
shekhar 0:a93f830eae68 335
shekhar 0:a93f830eae68 336 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state
shekhar 0:a93f830eae68 337 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state
shekhar 0:a93f830eae68 338
shekhar 0:a93f830eae68 339 setFrequency(435.0,05);
shekhar 0:a93f830eae68 340
shekhar 0:a93f830eae68 341 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
shekhar 0:a93f830eae68 342 {
shekhar 2:9b4647a9558c 343 pc.printf("frequency not set properly\r\n");
shekhar 0:a93f830eae68 344 reset_uC();
shekhar 0:a93f830eae68 345 }
shekhar 0:a93f830eae68 346
shekhar 0:a93f830eae68 347 //set Modem Configuration
shekhar 0:a93f830eae68 348 writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0xdf);
shekhar 0:a93f830eae68 349 writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03);
shekhar 0:a93f830eae68 350 writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x39);
shekhar 0:a93f830eae68 351 writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x20);
shekhar 0:a93f830eae68 352 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 353 writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0xdc);
shekhar 0:a93f830eae68 354 writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00);
shekhar 0:a93f830eae68 355 writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x6B);
shekhar 0:a93f830eae68 356 writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2C);
shekhar 0:a93f830eae68 357 writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x11); //not required for fsk (OOK counter value)
shekhar 0:a93f830eae68 358 writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x2A); //??
shekhar 0:a93f830eae68 359 writereg(RF22_REG_58,0x80);
shekhar 0:a93f830eae68 360 writereg(RF22_REG_69_AGC_OVERRIDE1,0x60);
shekhar 0:a93f830eae68 361
shekhar 0:a93f830eae68 362 //Data rate set later
shekhar 0:a93f830eae68 363
shekhar 0:a93f830eae68 364 writereg(RF22_REG_70_MODULATION_CONTROL1,0x20);
shekhar 0:a93f830eae68 365 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21
shekhar 0:a93f830eae68 366
shekhar 0:a93f830eae68 367 //set tx power
shekhar 0:a93f830eae68 368 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
shekhar 0:a93f830eae68 369
shekhar 0:a93f830eae68 370 //TX_packet_length written later
shekhar 0:a93f830eae68 371 }
shekhar 0:a93f830eae68 372 bool Check_ACK_RECEIVED()
shekhar 0:a93f830eae68 373 {
shekhar 0:a93f830eae68 374 if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)
shekhar 0:a93f830eae68 375 {
shekhar 0:a93f830eae68 376 printf("Packet sent: ACK received\r\n");
shekhar 0:a93f830eae68 377 return 1;
shekhar 0:a93f830eae68 378 }
shekhar 0:a93f830eae68 379 else
shekhar 0:a93f830eae68 380 {
shekhar 0:a93f830eae68 381 pc.printf("Packet not sent\r\n");
shekhar 0:a93f830eae68 382 return 0;
shekhar 0:a93f830eae68 383 }
shekhar 0:a93f830eae68 384 }
shekhar 0:a93f830eae68 385 int main()
shekhar 0:a93f830eae68 386 {
shekhar 2:9b4647a9558c 387 FCTN_BCN_INIT();
shekhar 0:a93f830eae68 388
shekhar 2:9b4647a9558c 389 loop.attach(&FCTN_BCN_TX_MAIN, 10.0);//in actual case its 30.0
shekhar 0:a93f830eae68 390
shekhar 0:a93f830eae68 391 while(t.read() < RF_SILENCE_TIME);
shekhar 0:a93f830eae68 392
shekhar 2:9b4647a9558c 393 FCTN_BCN_FEN();
shekhar 0:a93f830eae68 394
shekhar 0:a93f830eae68 395 while(1);
shekhar 0:a93f830eae68 396
shekhar 0:a93f830eae68 397 }