pradeep shekhar / Mbed 2 deprecated BEACON_CODE

Repository for final Beacon code of IITMSAT

Dependencies:   mbed

BCN.cpp@24:ca96cddf25d0, 2015-11-02 (annotated)

Committer:
shekhar
Date:
Mon Nov 02 14:46:12 2015 +0000
Revision:
24:ca96cddf25d0
Parent:
23:a864d57f10c4
Child:
25:90cdfbadea91
made changes to integrate with BAE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shekhar 18:3d8e70286f67 1 #include "BCN.h"
shekhar 24:ca96cddf25d0 2 #include <stdio.h>
shekhar 24:ca96cddf25d0 3 #include "pin_config.h"
shekhar 17:afadd6b988a2 4 //Check the pin names
shekhar 17:afadd6b988a2 5 //Takes max 4.3 sec in void FCTN_BCN_TX_MAIN() (temp.calc. + long_beacon + short_beacon)
shekhar 17:afadd6b988a2 6
shekhar 24:ca96cddf25d0 7 Serial pc_bcn(USBTX, USBRX); //tx,rx
shekhar 24:ca96cddf25d0 8 SPI spi(PIN16, PIN17, PIN15); // mosi, miso, sclk
shekhar 24:ca96cddf25d0 9 DigitalOut cs(PIN6); //slave select or chip select
shekhar 24:ca96cddf25d0 10 Timer t_i;//timer for checking the time taken by (temp.calc. + long_beacon + short_beacon)
shekhar 24:ca96cddf25d0 11 Timeout rf_sl_timeout;//RF_silence timer
shekhar 24:ca96cddf25d0 12 Ticker loop;//for transmitting every 10 secs
shekhar 17:afadd6b988a2 13
shekhar 17:afadd6b988a2 14 //GLOBAL VARIABLES
shekhar 17:afadd6b988a2 15 uint8_t BCN_INIT_STATUS = 0;
shekhar 17:afadd6b988a2 16 uint8_t BCN_TX_MAIN_STATUS = 0;
shekhar 17:afadd6b988a2 17 uint8_t BCN_TX_STATUS = 0;
shekhar 17:afadd6b988a2 18 uint8_t BCN_TX_EN = 1; //hardcoding for now //check where is this variable toggled??
shekhar 19:6863457ea3d1 19 uint8_t BCN_FEN = 0; //hardcoding for now //write this value to flash
shekhar 17:afadd6b988a2 20 uint8_t BCN_STANDBY = 0; //hardcoding for now //check where is this variable toggled??
shekhar 17:afadd6b988a2 21 uint8_t BCN_TS_BUFFER = 0; // For Temperature
shekhar 17:afadd6b988a2 22
shekhar 17:afadd6b988a2 23 void FCTN_BCN_INIT()
shekhar 17:afadd6b988a2 24 {
shekhar 24:ca96cddf25d0 25 pc_bcn.printf("FCTN_BCN_INIT\n");
shekhar 24:ca96cddf25d0 26 Init_BEACON_HW();
shekhar 17:afadd6b988a2 27 BCN_INIT_STATUS = 1;
shekhar 24:ca96cddf25d0 28 if(BCN_FEN == 0)//BCN_FEN is in flash
shekhar 24:ca96cddf25d0 29 rf_sl_timeout.attach(&FCTN_BCN_FEN, RF_SILENCE_TIME);
shekhar 17:afadd6b988a2 30 BCN_INIT_STATUS = 0;
shekhar 17:afadd6b988a2 31 }
shekhar 17:afadd6b988a2 32 void FCTN_BCN_FEN()
shekhar 17:afadd6b988a2 33 {
shekhar 24:ca96cddf25d0 34 pc_bcn.printf("FCTN_FEN\n");
shekhar 17:afadd6b988a2 35 BCN_FEN = 1;//write this value to flash
shekhar 17:afadd6b988a2 36 }
shekhar 17:afadd6b988a2 37 void FCTN_BCN_TX_MAIN()
shekhar 17:afadd6b988a2 38 {
shekhar 24:ca96cddf25d0 39 pc_bcn.printf("FCTN_BCN_TX_MAIN\n");
shekhar 17:afadd6b988a2 40 t_i.start();
shekhar 17:afadd6b988a2 41 int begin = t_i.read_us();
shekhar 17:afadd6b988a2 42 BCN_TX_MAIN_STATUS = 1;
shekhar 17:afadd6b988a2 43
shekhar 17:afadd6b988a2 44 if(BCN_FEN == 1)
shekhar 17:afadd6b988a2 45 {
shekhar 17:afadd6b988a2 46 if(BCN_TX_EN == 1)
shekhar 17:afadd6b988a2 47 {
shekhar 17:afadd6b988a2 48 //Measure and store BCN temperature in BCN_TS_BUFFER
shekhar 17:afadd6b988a2 49 BCN_TS_BUFFER = check_Temperature();
shekhar 24:ca96cddf25d0 50 pc_bcn.printf("\n\ntemperature = %d\n\n",BCN_TS_BUFFER);
shekhar 17:afadd6b988a2 51 //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER
shekhar 17:afadd6b988a2 52 if(BCN_STANDBY == 1 )
shekhar 17:afadd6b988a2 53 {
shekhar 17:afadd6b988a2 54 Set_BCN_TX_STATUS(BCN_TX_STANDBY);
shekhar 17:afadd6b988a2 55 BCN_TX_MAIN_STATUS = 0;
shekhar 17:afadd6b988a2 56
shekhar 17:afadd6b988a2 57 // break;
shekhar 17:afadd6b988a2 58 }
shekhar 17:afadd6b988a2 59 else
shekhar 17:afadd6b988a2 60 {
shekhar 17:afadd6b988a2 61 //transmit short beacon and long beacon
shekhar 17:afadd6b988a2 62 SHORT_BCN_TX();
shekhar 23:a864d57f10c4 63 LONG_BCN_TX();
shekhar 17:afadd6b988a2 64
shekhar 17:afadd6b988a2 65 if(Check_ACK_RECEIVED() == 1)
shekhar 17:afadd6b988a2 66 {
shekhar 17:afadd6b988a2 67 Set_BCN_TX_STATUS(BCN_TX_SUCCESS);
shekhar 17:afadd6b988a2 68 BCN_TX_MAIN_STATUS = 0;
shekhar 17:afadd6b988a2 69 }
shekhar 17:afadd6b988a2 70 else
shekhar 17:afadd6b988a2 71 {
shekhar 17:afadd6b988a2 72 Set_BCN_TX_STATUS(BCN_TX_FAILURE);
shekhar 17:afadd6b988a2 73 BCN_TX_MAIN_STATUS = 0;
shekhar 17:afadd6b988a2 74
shekhar 17:afadd6b988a2 75 }
shekhar 17:afadd6b988a2 76 }
shekhar 17:afadd6b988a2 77 }
shekhar 17:afadd6b988a2 78 else
shekhar 17:afadd6b988a2 79 {
shekhar 17:afadd6b988a2 80 Set_BCN_TX_STATUS(BCN_TX_DISABLED);
shekhar 17:afadd6b988a2 81 BCN_TX_MAIN_STATUS = 0;
shekhar 17:afadd6b988a2 82 }
shekhar 17:afadd6b988a2 83 }
shekhar 17:afadd6b988a2 84 else
shekhar 17:afadd6b988a2 85 {
shekhar 17:afadd6b988a2 86 Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on.
shekhar 17:afadd6b988a2 87 BCN_TX_MAIN_STATUS = 0;
shekhar 17:afadd6b988a2 88 }
shekhar 17:afadd6b988a2 89 t_i.stop();
shekhar 17:afadd6b988a2 90 int end = t_i.read_us();
shekhar 24:ca96cddf25d0 91 pc_bcn.printf("The time required for FCTN_BCN_TX_MAIN is %d useconds\r\n", end-begin);
shekhar 17:afadd6b988a2 92
shekhar 17:afadd6b988a2 93 }
shekhar 17:afadd6b988a2 94
shekhar 17:afadd6b988a2 95 void Set_BCN_TX_STATUS(uint8_t STATUS)
shekhar 17:afadd6b988a2 96 {
shekhar 17:afadd6b988a2 97 BCN_TX_STATUS = STATUS;
shekhar 17:afadd6b988a2 98 }
shekhar 17:afadd6b988a2 99
shekhar 17:afadd6b988a2 100 uint8_t check_Temperature()
shekhar 17:afadd6b988a2 101 {
shekhar 17:afadd6b988a2 102 uint8_t temperature;
shekhar 24:ca96cddf25d0 103 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x00);//set ADC to temp measurement
shekhar 24:ca96cddf25d0 104 writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x20);//measure in degree celsius
shekhar 24:ca96cddf25d0 105 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80);//start adc
shekhar 17:afadd6b988a2 106 wait(0.1);
shekhar 17:afadd6b988a2 107 temperature = readreg(RF22_REG_11_ADC_Value);
shekhar 17:afadd6b988a2 108 temperature = (float)temperature*0.5 - 64;
shekhar 17:afadd6b988a2 109 return temperature;
shekhar 17:afadd6b988a2 110 }
shekhar 17:afadd6b988a2 111
shekhar 17:afadd6b988a2 112 void SHORT_BCN_TX()
shekhar 17:afadd6b988a2 113 {
shekhar 17:afadd6b988a2 114 writereg(RF22_REG_6E_TX_DATA_RATE,0x01);
shekhar 20:89b6bb0859a1 115 writereg(RF22_REG_6F_TX_DATA_RATE,0x50);//160bps
shekhar 17:afadd6b988a2 116 writereg(RF22_REG_3E_PACKET_LENGTH,SHORT_TX_DATA); //short packet length
shekhar 17:afadd6b988a2 117 wait(0.02);
shekhar 17:afadd6b988a2 118
shekhar 17:afadd6b988a2 119 uint32_t timeout_count = 10e5;
shekhar 17:afadd6b988a2 120 //extract values from short_beacon[]
shekhar 17:afadd6b988a2 121
shekhar 17:afadd6b988a2 122 struct Short_beacon
shekhar 17:afadd6b988a2 123 {
shekhar 17:afadd6b988a2 124 uint8_t Voltage[1];
shekhar 17:afadd6b988a2 125 uint8_t AngularSpeed[2];
shekhar 17:afadd6b988a2 126 uint8_t SubsystemStatus[1];
shekhar 17:afadd6b988a2 127 uint8_t Temp[3];
shekhar 17:afadd6b988a2 128 uint8_t ErrorFlag[1];
shekhar 17:afadd6b988a2 129 }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} };
shekhar 17:afadd6b988a2 130
shekhar 17:afadd6b988a2 131 //filling hk data
shekhar 17:afadd6b988a2 132 //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 17:afadd6b988a2 133 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 17:afadd6b988a2 134
shekhar 17:afadd6b988a2 135 //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ??
shekhar 17:afadd6b988a2 136 clearTxBuf();
shekhar 17:afadd6b988a2 137 //writing data first time
shekhar 17:afadd6b988a2 138 int byte = 0;
shekhar 17:afadd6b988a2 139 cs = 0;
shekhar 17:afadd6b988a2 140 spi.write(0xFF);
shekhar 17:afadd6b988a2 141
shekhar 17:afadd6b988a2 142 for (int byte_counter = 0; byte_counter <15 ; byte_counter++)
shekhar 17:afadd6b988a2 143 {
shekhar 17:afadd6b988a2 144 for(int j = 3; j >= 0 ; j--)
shekhar 17:afadd6b988a2 145 {
shekhar 17:afadd6b988a2 146 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,(j*2+1)))!= pow(2.0,(j*2+1)))
shekhar 17:afadd6b988a2 147 {
shekhar 17:afadd6b988a2 148 byte=0x00;
shekhar 17:afadd6b988a2 149 }
shekhar 17:afadd6b988a2 150 else
shekhar 17:afadd6b988a2 151 {
shekhar 17:afadd6b988a2 152 byte=0xF0;
shekhar 17:afadd6b988a2 153 }
shekhar 17:afadd6b988a2 154 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j*2))!= pow(2.0,j*2))
shekhar 17:afadd6b988a2 155 {
shekhar 17:afadd6b988a2 156 byte=byte | 0x00;
shekhar 17:afadd6b988a2 157 }
shekhar 17:afadd6b988a2 158 else
shekhar 17:afadd6b988a2 159 {
shekhar 17:afadd6b988a2 160 byte=byte | 0x0F;
shekhar 17:afadd6b988a2 161 }
shekhar 17:afadd6b988a2 162 spi.write(byte);
shekhar 17:afadd6b988a2 163 }
shekhar 17:afadd6b988a2 164 }
shekhar 17:afadd6b988a2 165
shekhar 17:afadd6b988a2 166 cs = 1;
shekhar 17:afadd6b988a2 167
shekhar 17:afadd6b988a2 168 //Set to Tx mode
shekhar 24:ca96cddf25d0 169 writereg(RF22_REG_07_OPERATING_MODE1,0x08); //txon
shekhar 24:ca96cddf25d0 170 wait(0.1);// takes time to set to tx mode hence the delay of 0.1.
shekhar 24:ca96cddf25d0 171
shekhar 17:afadd6b988a2 172 //Check for fifoThresh
shekhar 17:afadd6b988a2 173 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
shekhar 17:afadd6b988a2 174 timeout_count=10e5;
shekhar 17:afadd6b988a2 175
shekhar 17:afadd6b988a2 176 //Check for packet_sent
shekhar 17:afadd6b988a2 177 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;
shekhar 17:afadd6b988a2 178
shekhar 24:ca96cddf25d0 179 //pc_bcn.printf("Short packet sent\r\n");
shekhar 17:afadd6b988a2 180
shekhar 17:afadd6b988a2 181 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 17:afadd6b988a2 182
shekhar 17:afadd6b988a2 183 }
shekhar 17:afadd6b988a2 184 void LONG_BCN_TX()
shekhar 17:afadd6b988a2 185 {
shekhar 17:afadd6b988a2 186 writereg(RF22_REG_6E_TX_DATA_RATE,0x04);
shekhar 17:afadd6b988a2 187 writereg(RF22_REG_6F_TX_DATA_RATE,0xEA);//600 bps
shekhar 17:afadd6b988a2 188 writereg(RF22_REG_3E_PACKET_LENGTH,LONG_TX_DATA); //long packet length
shekhar 17:afadd6b988a2 189 wait(0.02);
shekhar 17:afadd6b988a2 190 uint32_t timeout_count=10e5;
shekhar 17:afadd6b988a2 191
shekhar 17:afadd6b988a2 192 //get long_beacon array
shekhar 17:afadd6b988a2 193
shekhar 17:afadd6b988a2 194 uint8_t Long_beacon[75];
shekhar 17:afadd6b988a2 195 for(int i = 0;i<75;i++)
shekhar 17:afadd6b988a2 196 {
shekhar 17:afadd6b988a2 197 Long_beacon[i] = 0xA0;
shekhar 17:afadd6b988a2 198 }
shekhar 17:afadd6b988a2 199
shekhar 17:afadd6b988a2 200 clearTxBuf();
shekhar 17:afadd6b988a2 201 //writing data first time
shekhar 17:afadd6b988a2 202 cs = 0;
shekhar 17:afadd6b988a2 203 spi.write(0xFF);
shekhar 17:afadd6b988a2 204 for(int i=0; i<60;i++)
shekhar 17:afadd6b988a2 205 {
shekhar 17:afadd6b988a2 206 spi.write(Long_beacon[i]);
shekhar 17:afadd6b988a2 207 }
shekhar 17:afadd6b988a2 208 cs = 1;
shekhar 17:afadd6b988a2 209
shekhar 17:afadd6b988a2 210 //Set to Tx mode
shekhar 23:a864d57f10c4 211 writereg(RF22_REG_07_OPERATING_MODE1,0x08);
shekhar 24:ca96cddf25d0 212 wait(0.1);//necessary
shekhar 17:afadd6b988a2 213
shekhar 17:afadd6b988a2 214 //Check for fifoThresh
shekhar 17:afadd6b988a2 215 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
shekhar 17:afadd6b988a2 216 timeout_count=10e5;
shekhar 17:afadd6b988a2 217
shekhar 17:afadd6b988a2 218 cs = 0;
shekhar 17:afadd6b988a2 219 spi.write(0xFF);
shekhar 17:afadd6b988a2 220 for(int i=60; i<75;i++)
shekhar 17:afadd6b988a2 221 {
shekhar 17:afadd6b988a2 222 spi.write(Long_beacon[i]);
shekhar 17:afadd6b988a2 223 }
shekhar 17:afadd6b988a2 224 cs = 1;
shekhar 17:afadd6b988a2 225 wait(0.1);
shekhar 17:afadd6b988a2 226 //Check for fifoThresh
shekhar 17:afadd6b988a2 227 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
shekhar 17:afadd6b988a2 228 timeout_count=10e5;
shekhar 17:afadd6b988a2 229
shekhar 17:afadd6b988a2 230 //Check for packetsent interrupt
shekhar 17:afadd6b988a2 231 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;
shekhar 17:afadd6b988a2 232
shekhar 24:ca96cddf25d0 233 //pc_bcn.printf("Long packet sent\r\n");
shekhar 17:afadd6b988a2 234
shekhar 17:afadd6b988a2 235 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 17:afadd6b988a2 236 }
shekhar 20:89b6bb0859a1 237 void reset_rfm()
shekhar 17:afadd6b988a2 238 {
shekhar 17:afadd6b988a2 239 FCTN_BCN_INIT();
shekhar 17:afadd6b988a2 240 }
shekhar 17:afadd6b988a2 241 void writereg(uint8_t reg,uint8_t val)
shekhar 17:afadd6b988a2 242 {
shekhar 17:afadd6b988a2 243 uint8_t count = 0;
shekhar 17:afadd6b988a2 244 for(;;count++)
shekhar 17:afadd6b988a2 245 {
shekhar 17:afadd6b988a2 246 int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1;
shekhar 17:afadd6b988a2 247 if(reg != 0x7 && reg != 0x58 && reg != 0xF)
shekhar 17:afadd6b988a2 248 {
shekhar 17:afadd6b988a2 249 read_val = readreg(reg);
shekhar 17:afadd6b988a2 250 if (read_val == val)
shekhar 17:afadd6b988a2 251 {
shekhar 17:afadd6b988a2 252 break;
shekhar 17:afadd6b988a2 253 }
shekhar 17:afadd6b988a2 254 else if(count == 5)
shekhar 17:afadd6b988a2 255 {
shekhar 20:89b6bb0859a1 256 reset_rfm(), printf("reg = 0x%X\n",reg);break;
shekhar 17:afadd6b988a2 257 }
shekhar 17:afadd6b988a2 258 }
shekhar 17:afadd6b988a2 259 else
shekhar 17:afadd6b988a2 260 break;
shekhar 17:afadd6b988a2 261 }
shekhar 17:afadd6b988a2 262 }
shekhar 17:afadd6b988a2 263 uint8_t readreg(uint8_t reg)
shekhar 17:afadd6b988a2 264 {
shekhar 17:afadd6b988a2 265 uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val;
shekhar 17:afadd6b988a2 266 }
shekhar 17:afadd6b988a2 267 void clearTxBuf()
shekhar 17:afadd6b988a2 268 {
shekhar 17:afadd6b988a2 269 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
shekhar 17:afadd6b988a2 270 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
shekhar 17:afadd6b988a2 271 }
shekhar 23:a864d57f10c4 272 uint8_t setFrequency(double centre)
shekhar 17:afadd6b988a2 273 {
shekhar 17:afadd6b988a2 274 uint8_t fbsel = 0x40;
shekhar 17:afadd6b988a2 275 if (centre >= 480.0) {
shekhar 17:afadd6b988a2 276 centre /= 2;
shekhar 17:afadd6b988a2 277 fbsel |= 0x20;
shekhar 23:a864d57f10c4 278 }
shekhar 17:afadd6b988a2 279 centre /= 10.0;
shekhar 17:afadd6b988a2 280 double integerPart = floor(centre);
shekhar 17:afadd6b988a2 281 double fractionalPart = centre - integerPart;
shekhar 17:afadd6b988a2 282
shekhar 17:afadd6b988a2 283 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
shekhar 17:afadd6b988a2 284 fbsel |= fb;
shekhar 17:afadd6b988a2 285 uint16_t fc = fractionalPart * 64000;
shekhar 17:afadd6b988a2 286 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
shekhar 17:afadd6b988a2 287 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
shekhar 17:afadd6b988a2 288 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
shekhar 17:afadd6b988a2 289 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
shekhar 17:afadd6b988a2 290 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
shekhar 17:afadd6b988a2 291 return 0;
shekhar 17:afadd6b988a2 292 }
shekhar 17:afadd6b988a2 293
shekhar 17:afadd6b988a2 294
shekhar 17:afadd6b988a2 295 void Init_BEACON_HW()
shekhar 17:afadd6b988a2 296 {
shekhar 17:afadd6b988a2 297 wait(0.1);
shekhar 17:afadd6b988a2 298 cs=1; // chip must be deselected
shekhar 17:afadd6b988a2 299 wait(0.1);
shekhar 17:afadd6b988a2 300 spi.format(8,0);
shekhar 17:afadd6b988a2 301 spi.frequency(10000000); //10MHz SCLK
shekhar 17:afadd6b988a2 302
shekhar 17:afadd6b988a2 303 //should either have a flag for invalid SPI or discard this for actual case or add reset
shekhar 17:afadd6b988a2 304 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08)
shekhar 24:ca96cddf25d0 305 pc_bcn.printf("spi connection valid\r\n");
shekhar 17:afadd6b988a2 306 else
shekhar 24:ca96cddf25d0 307 {pc_bcn.printf("error in spi connection\r\n");
shekhar 20:89b6bb0859a1 308 reset_rfm();
shekhar 17:afadd6b988a2 309 }
shekhar 17:afadd6b988a2 310
shekhar 17:afadd6b988a2 311 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
shekhar 17:afadd6b988a2 312 wait(0.1); //takes time to reset
shekhar 17:afadd6b988a2 313
shekhar 17:afadd6b988a2 314 clearTxBuf();
shekhar 17:afadd6b988a2 315
shekhar 17:afadd6b988a2 316 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
shekhar 17:afadd6b988a2 317
shekhar 17:afadd6b988a2 318 //txfifoalmostempty
shekhar 17:afadd6b988a2 319 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30);
shekhar 17:afadd6b988a2 320
shekhar 17:afadd6b988a2 321 //Packet-engine registers
shekhar 17:afadd6b988a2 322 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00);
shekhar 17:afadd6b988a2 323
shekhar 17:afadd6b988a2 324 writereg(RF22_REG_33_HEADER_CONTROL2,0x08);
shekhar 17:afadd6b988a2 325 writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00);
shekhar 17:afadd6b988a2 326
shekhar 17:afadd6b988a2 327 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state
shekhar 17:afadd6b988a2 328 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state
shekhar 17:afadd6b988a2 329
shekhar 23:a864d57f10c4 330 setFrequency(435.0);
shekhar 17:afadd6b988a2 331
shekhar 17:afadd6b988a2 332 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
shekhar 17:afadd6b988a2 333 {
shekhar 24:ca96cddf25d0 334 pc_bcn.printf("frequency not set properly\r\n");
shekhar 20:89b6bb0859a1 335 reset_rfm();
shekhar 17:afadd6b988a2 336 }
shekhar 17:afadd6b988a2 337
shekhar 17:afadd6b988a2 338 //set Modem Configuration
shekhar 17:afadd6b988a2 339 writereg(RF22_REG_58,0x80);
shekhar 17:afadd6b988a2 340
shekhar 17:afadd6b988a2 341 //Data rate set later
shekhar 17:afadd6b988a2 342
shekhar 17:afadd6b988a2 343 writereg(RF22_REG_70_MODULATION_CONTROL1,0x20);
shekhar 17:afadd6b988a2 344 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21
shekhar 17:afadd6b988a2 345
shekhar 17:afadd6b988a2 346 //set tx power
shekhar 17:afadd6b988a2 347 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
shekhar 17:afadd6b988a2 348
shekhar 17:afadd6b988a2 349 //TX_packet_length written later
shekhar 17:afadd6b988a2 350 }
shekhar 17:afadd6b988a2 351 bool Check_ACK_RECEIVED()
shekhar 17:afadd6b988a2 352 {
shekhar 17:afadd6b988a2 353 if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)
shekhar 17:afadd6b988a2 354 {
shekhar 17:afadd6b988a2 355 printf("Packet sent: ACK received\r\n");
shekhar 17:afadd6b988a2 356 return 1;
shekhar 17:afadd6b988a2 357 }
shekhar 17:afadd6b988a2 358 else
shekhar 17:afadd6b988a2 359 {
shekhar 24:ca96cddf25d0 360 pc_bcn.printf("Packet not sent\r\n");
shekhar 17:afadd6b988a2 361 return 0;
shekhar 17:afadd6b988a2 362 }
shekhar 17:afadd6b988a2 363 }
shekhar 24:ca96cddf25d0 364 /*int main()
shekhar 17:afadd6b988a2 365 {
shekhar 17:afadd6b988a2 366 FCTN_BCN_INIT();
shekhar 17:afadd6b988a2 367
shekhar 17:afadd6b988a2 368 loop.attach(&FCTN_BCN_TX_MAIN, 10.0);//in actual case its 30.0
shekhar 17:afadd6b988a2 369
shekhar 17:afadd6b988a2 370 while(1);
shekhar 17:afadd6b988a2 371
shekhar 24:ca96cddf25d0 372 }*/