Team Fox / Mbed 2 deprecated TR_EXCITATION_TEST

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Dependencies:   FreescaleIAP mbed-rtos mbed

Fork of BAE_CODE_MARCH_2017 by Team Fox

BCN.cpp@23:c65456ec5e61, 2016-07-02 (annotated)

Committer:
azaddevarm
Date:
Sat Jul 02 10:09:35 2016 +0000
Revision:
23:c65456ec5e61
Parent:
20:949d13045431
Child:
26:c8655e0ec73a
BCN updated

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lakshya 20:949d13045431 1 #include "BCN.h"
lakshya 20:949d13045431 2 #include <stdio.h>
lakshya 20:949d13045431 3 #include "pin_config.h"
lakshya 20:949d13045431 4 //Check the pin names
azaddevarm 23:c65456ec5e61 5 //Takes max 4 sec in void FCTN_BCN_TX_MAIN() (temp.calc. + long_beacon + short_beacon)
lakshya 20:949d13045431 6
lakshya 20:949d13045431 7 Serial pc_bcn(USBTX, USBRX); //tx,rx
lakshya 20:949d13045431 8 SPI spi(D11, D12, D13); // mosi, miso, sclk
lakshya 20:949d13045431 9 DigitalOut cs(D10); //slave select or chip select
lakshya 20:949d13045431 10 //SPI spi(PIN16, PIN17, PIN15); // mosi, miso, sclk
lakshya 20:949d13045431 11 //DigitalOut cs(PIN6); //slave select or chip select
lakshya 20:949d13045431 12 Timer t_i;//timer for checking the time taken by (temp.calc. + long_beacon + short_beacon)
lakshya 20:949d13045431 13 //Timer t_is;//timer for short_beacon
lakshya 20:949d13045431 14 //Timer t_il;//timer for long_beacon
lakshya 20:949d13045431 15 Timeout rf_sl_timeout;//RF_silence timer
lakshya 20:949d13045431 16 Ticker loop;//for transmitting every 10 secs
lakshya 20:949d13045431 17
lakshya 20:949d13045431 18 //GLOBAL VARIABLES
lakshya 20:949d13045431 19 uint8_t BCN_INIT_STATUS = 0;
lakshya 20:949d13045431 20 uint8_t BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 21 uint8_t BCN_TX_STATUS = 0;
lakshya 20:949d13045431 22 uint8_t BCN_TX_ENABLE = 1; //hardcoding for now //check where is this variable toggled??
lakshya 20:949d13045431 23 uint8_t BCN_TX_SW_STATUS = 1;
lakshya 20:949d13045431 24 uint8_t BCN_FEN = 0; //hardcoding for now //write this value to flash
lakshya 20:949d13045431 25 uint8_t BCN_SPND_TX = 0; //hardcoding for now //check where is this variable toggled??
lakshya 20:949d13045431 26 uint8_t BCN_TMP = 0; // For Temperature
lakshya 20:949d13045431 27 uint8_t ERROR_CHECK = 0;
lakshya 20:949d13045431 28 uint8_t BCN_FAIL_COUNT = 0; //Flag for keeping count of no. of times of BCN failure in init or one transmission in 30 secs (failure in spi communication)
lakshya 20:949d13045431 29 //This Flag when exceeds a threshold, uC should reset.
lakshya 20:949d13045431 30 uint16_t BCN_TX_MAIN_COUNTER = 0;
lakshya 20:949d13045431 31
lakshya 20:949d13045431 32 void FCTN_BCN_INIT()
lakshya 20:949d13045431 33 {
lakshya 20:949d13045431 34 pc_bcn.printf("FCTN_BCN_INIT\n");
lakshya 20:949d13045431 35 BCN_INIT_STATUS = 1;
lakshya 20:949d13045431 36 if( BCN_TX_SW_STATUS == 0b00000001 )
lakshya 20:949d13045431 37 Init_BEACON_HW();
lakshya 20:949d13045431 38 else Set_BCN_TX_STATUS(BCN_TX_DISABLED);
lakshya 20:949d13045431 39 // if(BCN_FEN == 0)//BCN_FEN is in flash
lakshya 20:949d13045431 40 // rf_sl_timeout.attach(&FCTN_BCN_FEN, RF_SILENCE_TIME);
lakshya 20:949d13045431 41 BCN_INIT_STATUS = 0;
lakshya 20:949d13045431 42 }
lakshya 20:949d13045431 43
lakshya 20:949d13045431 44 extern uint32_t FCTN_BAE_RD_FLASH_ENTITY(uint16_t);
lakshya 20:949d13045431 45 extern void FCTN_BAE_WR_FLASH(uint16_t ,uint32_t );
lakshya 20:949d13045431 46
lakshya 20:949d13045431 47 void FCTN_BCN_FEN(const void*)
lakshya 20:949d13045431 48 {
lakshya 20:949d13045431 49 pc_bcn.printf("FCTN_FEN\n\r");
lakshya 20:949d13045431 50 BCN_FEN = 1;//write this value to flash
lakshya 20:949d13045431 51 uint32_t FLASH_DATA;
lakshya 20:949d13045431 52 FLASH_DATA = FCTN_BAE_RD_FLASH_ENTITY(0);
lakshya 20:949d13045431 53 FLASH_DATA = (FLASH_DATA | 0x00001000);//see if uint8 to uint32 conversion works
lakshya 20:949d13045431 54 FCTN_BAE_WR_FLASH(0,FLASH_DATA);
lakshya 20:949d13045431 55 }
lakshya 20:949d13045431 56 void FCTN_BCN_TX_MAIN()
lakshya 20:949d13045431 57 {
lakshya 20:949d13045431 58 ERROR_CHECK=0;
lakshya 20:949d13045431 59 pc_bcn.printf("\n\nFCTN_BCN_TX_MAIN\n\r");
lakshya 20:949d13045431 60 t_i.start();
lakshya 20:949d13045431 61 int begin = t_i.read_us();
lakshya 20:949d13045431 62 //int begins,beginl,endl;
lakshya 20:949d13045431 63 int begintx,endtx;
lakshya 20:949d13045431 64 BCN_TX_MAIN_STATUS = 1;
lakshya 20:949d13045431 65 BCN_TX_MAIN_COUNTER++;
lakshya 20:949d13045431 66 if(BCN_FEN == 1)
lakshya 20:949d13045431 67 {
lakshya 20:949d13045431 68 if(BCN_TX_SW_STATUS == 0b00000001)
lakshya 20:949d13045431 69 {
lakshya 20:949d13045431 70 //Measure and store BCN temperature in BCN_TS_BUFFER
lakshya 20:949d13045431 71 BCN_TMP = check_Temperature();
lakshya 20:949d13045431 72 pc_bcn.printf("temperature = %d\n\r",BCN_TMP);
lakshya 20:949d13045431 73 //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER
lakshya 20:949d13045431 74 if(BCN_SPND_TX == 1 )
lakshya 20:949d13045431 75 {
lakshya 20:949d13045431 76 Set_BCN_TX_STATUS(BCN_TX_STANDBY);
lakshya 20:949d13045431 77 BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 78
lakshya 20:949d13045431 79 // break;
lakshya 20:949d13045431 80 }
lakshya 20:949d13045431 81 else
lakshya 20:949d13045431 82 {
lakshya 20:949d13045431 83 //transmit short beacon and long beacon
lakshya 20:949d13045431 84 begintx = t_i.read_us();
lakshya 20:949d13045431 85 BCN_TX();
lakshya 20:949d13045431 86 endtx = t_i.read_us();
lakshya 20:949d13045431 87
lakshya 20:949d13045431 88 if(Check_ACK_RECEIVED() == 1)
lakshya 20:949d13045431 89 {
lakshya 20:949d13045431 90 Set_BCN_TX_STATUS(BCN_TX_SUCCESS);
lakshya 20:949d13045431 91 BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 92 }
lakshya 20:949d13045431 93 else
lakshya 20:949d13045431 94 {
azaddevarm 23:c65456ec5e61 95 //Set_BCN_TX_STATUS(BCN_TX_FAILURE);
lakshya 20:949d13045431 96 BCN_FAIL_COUNT++;
lakshya 20:949d13045431 97 Init_BEACON_HW();
lakshya 20:949d13045431 98 BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 99
lakshya 20:949d13045431 100 }
lakshya 20:949d13045431 101 }
lakshya 20:949d13045431 102 }
lakshya 20:949d13045431 103 else
lakshya 20:949d13045431 104 {
lakshya 20:949d13045431 105 Set_BCN_TX_STATUS(BCN_TX_DISABLED);
lakshya 20:949d13045431 106 BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 107 }
lakshya 20:949d13045431 108 }
lakshya 20:949d13045431 109 else
lakshya 20:949d13045431 110 {
lakshya 20:949d13045431 111 Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on.
lakshya 20:949d13045431 112 BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 113 }
lakshya 20:949d13045431 114 t_i.stop();
lakshya 20:949d13045431 115 int end = t_i.read_us();
lakshya 20:949d13045431 116 pc_bcn.printf("The time required for FCTN_BCN_TX_MAIN is %d useconds\r\n", end-begin);
lakshya 20:949d13045431 117 pc_bcn.printf("The time required for FCTN_BCN_TX is %d useconds\r\n", endtx-begintx);
lakshya 20:949d13045431 118 /*
lakshya 20:949d13045431 119 pc_bcn.printf("The time required for Short_BCN is %d useconds\r\n", beginl-begins);
lakshya 20:949d13045431 120 pc_bcn.printf("The time required for Long_BCN is %d useconds\r\n", endtx-beginl);
lakshya 20:949d13045431 121 */
lakshya 20:949d13045431 122 ERROR_CHECK = 0;
lakshya 20:949d13045431 123
lakshya 20:949d13045431 124 }
lakshya 20:949d13045431 125
lakshya 20:949d13045431 126 void Set_BCN_TX_STATUS(uint8_t STATUS)
lakshya 20:949d13045431 127 {
lakshya 20:949d13045431 128 BCN_TX_STATUS = STATUS;
lakshya 20:949d13045431 129 }
lakshya 20:949d13045431 130
lakshya 20:949d13045431 131 uint8_t check_Temperature()
lakshya 20:949d13045431 132 {
lakshya 20:949d13045431 133 uint8_t temperature;
lakshya 20:949d13045431 134 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x00);//set ADC to temp measurement
lakshya 20:949d13045431 135 writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x20);//measure in degree celsius
lakshya 20:949d13045431 136 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80);//start adc
lakshya 20:949d13045431 137 wait(0.1);
lakshya 20:949d13045431 138 temperature = readreg(RF22_REG_11_ADC_Value);
lakshya 20:949d13045431 139 temperature = (float)temperature*0.5 - 64;
lakshya 20:949d13045431 140 return temperature;
lakshya 20:949d13045431 141 }
lakshya 20:949d13045431 142
lakshya 20:949d13045431 143 void BCN_TX()
lakshya 20:949d13045431 144 {
lakshya 20:949d13045431 145 printf("BCN_TX\n\r");
lakshya 20:949d13045431 146 writereg(RF22_REG_6E_TX_DATA_RATE,0x0A);
lakshya 20:949d13045431 147 writereg(RF22_REG_6F_TX_DATA_RATE,0x7C);//1280bps
lakshya 20:949d13045431 148
lakshya 20:949d13045431 149 wait(0.02);
lakshya 20:949d13045431 150
lakshya 20:949d13045431 151 uint32_t timeout_count = 10e5;
lakshya 20:949d13045431 152 //extract values from short_beacon[]
lakshya 20:949d13045431 153
lakshya 20:949d13045431 154 uint8_t Long_beacon[LONG_TX_DATA];
lakshya 20:949d13045431 155 for(int i = 0;i<LONG_TX_DATA;i++)
lakshya 20:949d13045431 156 {
lakshya 20:949d13045431 157 Long_beacon[i] = 0xFF;
lakshya 20:949d13045431 158 }
lakshya 20:949d13045431 159
lakshya 20:949d13045431 160 struct Short_beacon
lakshya 20:949d13045431 161 {
lakshya 20:949d13045431 162 uint8_t Voltage[1];
lakshya 20:949d13045431 163 uint8_t AngularSpeed[2];
lakshya 20:949d13045431 164 uint8_t SubsystemStatus[1];
lakshya 20:949d13045431 165 uint8_t Temp[3];
lakshya 20:949d13045431 166 uint8_t ErrorFlag[1];
lakshya 20:949d13045431 167 }Shortbeacon = { {0xFF}, {0xFF, 0xFF} , {0xFF},{0xFF,0xFF,0xFF}, {0xFF} };
lakshya 20:949d13045431 168
lakshya 20:949d13045431 169 //filling hk data
lakshya 20:949d13045431 170 //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]};
lakshya 20:949d13045431 171 uint8_t short_beacon[] = { 0xF3, 0x02, 0xFA, 0xC6, 0xD4, 0x28, 0x8A,Shortbeacon.Voltage[0],Shortbeacon.AngularSpeed[0], Shortbeacon.AngularSpeed[1],Shortbeacon.SubsystemStatus[0],Shortbeacon.Temp[0],Shortbeacon.Temp[1],Shortbeacon.Temp[2],Shortbeacon.ErrorFlag[0]};
lakshya 20:949d13045431 172
lakshya 20:949d13045431 173 //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ??
lakshya 20:949d13045431 174 clearTxBuf(); //writing data first time
lakshya 20:949d13045431 175
azaddevarm 23:c65456ec5e61 176 int byte_counter;
lakshya 20:949d13045431 177 uint8_t onebyte[4] = {0x81,0xA6,0xBE,0x4E};
lakshya 20:949d13045431 178 uint8_t zerobyte[4] = {0x7E,0x59,0x41,0xB1};
lakshya 20:949d13045431 179 for (byte_counter = 0; byte_counter <15 ; byte_counter++)
lakshya 20:949d13045431 180 {
lakshya 20:949d13045431 181 for(int j = 7; j >= 0 ; j--)
lakshya 20:949d13045431 182 {
lakshya 20:949d13045431 183 cs = 0;
lakshya 20:949d13045431 184 spi.write(0xFF);
lakshya 20:949d13045431 185 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j))!= pow(2.0,j))
lakshya 20:949d13045431 186 {
lakshya 20:949d13045431 187 //byte=0x00;
lakshya 20:949d13045431 188 spi.write(zerobyte[0]);
lakshya 20:949d13045431 189 spi.write(zerobyte[1]);
lakshya 20:949d13045431 190 spi.write(zerobyte[2]);
lakshya 20:949d13045431 191 spi.write(zerobyte[3]);
lakshya 20:949d13045431 192 }
lakshya 20:949d13045431 193 else
lakshya 20:949d13045431 194 {
lakshya 20:949d13045431 195 //byte=0xFF;
lakshya 20:949d13045431 196 spi.write(onebyte[0]);
lakshya 20:949d13045431 197 spi.write(onebyte[1]);
lakshya 20:949d13045431 198 spi.write(onebyte[2]);
lakshya 20:949d13045431 199 spi.write(onebyte[3]);
lakshya 20:949d13045431 200 }
lakshya 20:949d13045431 201 cs = 1;
lakshya 20:949d13045431 202 /*
lakshya 20:949d13045431 203 spi.write(byte);
lakshya 20:949d13045431 204 spi.write(byte);
lakshya 20:949d13045431 205 spi.write(byte);
lakshya 20:949d13045431 206 spi.write(byte); //Each bit is written 32 times
lakshya 20:949d13045431 207 */
lakshya 20:949d13045431 208
lakshya 20:949d13045431 209 }
lakshya 20:949d13045431 210
lakshya 20:949d13045431 211 if(byte_counter == 1)
azaddevarm 23:c65456ec5e61 212 if(BCN_SPND_TX != 1) //Check for flag update by COM
azaddevarm 23:c65456ec5e61 213 {
azaddevarm 23:c65456ec5e61 214 //Set to Tx mode
azaddevarm 23:c65456ec5e61 215 writereg(RF22_REG_07_OPERATING_MODE1,0x08); //txon
azaddevarm 23:c65456ec5e61 216 wait(0.1);// takes time to set to tx mode hence the delay of 0.1.
azaddevarm 23:c65456ec5e61 217 }
azaddevarm 23:c65456ec5e61 218
lakshya 20:949d13045431 219 //testing level
lakshya 20:949d13045431 220 /*if(byte_counter > 0)
lakshya 20:949d13045431 221 while(1)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x40) == 0x00)break;else
lakshya 20:949d13045431 222 {
lakshya 20:949d13045431 223 pc_bcn.printf("w_f_empty1\n\r");
lakshya 20:949d13045431 224 //reset_rfm(1);
lakshya 20:949d13045431 225 }*/
lakshya 20:949d13045431 226
lakshya 20:949d13045431 227
lakshya 20:949d13045431 228 //Check for fifoThresh
lakshya 20:949d13045431 229
lakshya 20:949d13045431 230 if(byte_counter > 0)
lakshya 20:949d13045431 231 {wait_ms(25);
lakshya 20:949d13045431 232 while(1)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else
lakshya 20:949d13045431 233 {
lakshya 20:949d13045431 234 //pc_bcn.printf("w_f_empty\n");
lakshya 20:949d13045431 235 //reset_rfm(1);
lakshya 20:949d13045431 236 }
lakshya 20:949d13045431 237 }
lakshya 20:949d13045431 238
lakshya 20:949d13045431 239 /* if(byte_counter%2==0 && byte_counter)
lakshya 20:949d13045431 240 while(1)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x40) == 0x00)break;else
lakshya 20:949d13045431 241 {
lakshya 20:949d13045431 242 pc_bcn.printf("W = %d\r\n",byte_counter);
lakshya 20:949d13045431 243 }*/
lakshya 20:949d13045431 244 //pc_bcn.printf("W = %d\r\n",byte_counter);
lakshya 20:949d13045431 245 }
lakshya 20:949d13045431 246
lakshya 20:949d13045431 247 for(byte_counter = 15;byte_counter<142;byte_counter++)
lakshya 20:949d13045431 248 {
lakshya 20:949d13045431 249 cs = 0;
lakshya 20:949d13045431 250 spi.write(0xFF);
lakshya 20:949d13045431 251 spi.write(Long_beacon[byte_counter-15]);
lakshya 20:949d13045431 252 cs = 1;
lakshya 20:949d13045431 253
lakshya 20:949d13045431 254 if((byte_counter-15)%32==0)
lakshya 20:949d13045431 255 { //Check for fifoThresh
lakshya 20:949d13045431 256 wait_ms(25);
lakshya 20:949d13045431 257 while(1)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else //if(timeout_count == 1)
lakshya 20:949d13045431 258 {
lakshya 20:949d13045431 259 //pc_bcn.printf("Reset\n");
lakshya 20:949d13045431 260 //reset_rfm(1);
lakshya 20:949d13045431 261 }
lakshya 20:949d13045431 262 }
lakshya 20:949d13045431 263
lakshya 20:949d13045431 264 }
lakshya 20:949d13045431 265 wait_ms(70);
lakshya 20:949d13045431 266 //Check for fifoThresh
lakshya 20:949d13045431 267 while(1)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x40) == 0x00)break;else
lakshya 20:949d13045431 268 {
lakshya 20:949d13045431 269 pc_bcn.printf("Waiting for fifo to empty\r\n");
lakshya 20:949d13045431 270 }
lakshya 20:949d13045431 271
lakshya 20:949d13045431 272 //Check for packetsent interrupt
lakshya 20:949d13045431 273 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;else if(timeout_count == 1) reset_rfm(1);
lakshya 20:949d13045431 274
lakshya 20:949d13045431 275 //pc_bcn.printf("Short packet sent, bytes written = %d\r\n",byte_count);
lakshya 20:949d13045431 276
lakshya 20:949d13045431 277 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
lakshya 20:949d13045431 278
lakshya 20:949d13045431 279 }
azaddevarm 23:c65456ec5e61 280
lakshya 20:949d13045431 281 void reset_rfm(uint8_t fl)
lakshya 20:949d13045431 282 {
lakshya 20:949d13045431 283 if (fl ==1 && ERROR_CHECK ==0)
lakshya 20:949d13045431 284 { BCN_FAIL_COUNT++;
lakshya 20:949d13045431 285 ERROR_CHECK=1;
lakshya 20:949d13045431 286 printf("BCN_FAIL_COUNT++\n");
lakshya 20:949d13045431 287 }
lakshya 20:949d13045431 288 else if(fl == 0)
lakshya 20:949d13045431 289 {
lakshya 20:949d13045431 290 BCN_FAIL_COUNT = 0;
lakshya 20:949d13045431 291 ERROR_CHECK=0;
lakshya 20:949d13045431 292 }
lakshya 20:949d13045431 293 }
lakshya 20:949d13045431 294 void writereg(uint8_t reg,uint8_t val)
lakshya 20:949d13045431 295 {
lakshya 20:949d13045431 296
lakshya 20:949d13045431 297 uint8_t count = 0;
lakshya 20:949d13045431 298 for(;;count++)
lakshya 20:949d13045431 299 {
lakshya 20:949d13045431 300 int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1;
lakshya 20:949d13045431 301 if(reg != 0x7 && reg != 0x58 && reg != 0xF)
lakshya 20:949d13045431 302 {
lakshya 20:949d13045431 303 read_val = readreg(reg);
lakshya 20:949d13045431 304 if (read_val == val)
lakshya 20:949d13045431 305 {
lakshya 20:949d13045431 306 break;
lakshya 20:949d13045431 307 }
lakshya 20:949d13045431 308 else if(count == 5)
lakshya 20:949d13045431 309 {
lakshya 20:949d13045431 310 reset_rfm(1); printf("reg = 0x%X\n",reg);break;
lakshya 20:949d13045431 311 }
lakshya 20:949d13045431 312 else init_spi();
lakshya 20:949d13045431 313 }
lakshya 20:949d13045431 314 else
lakshya 20:949d13045431 315 break;
lakshya 20:949d13045431 316 }
lakshya 20:949d13045431 317 }
lakshya 20:949d13045431 318 uint8_t readreg(uint8_t reg)
lakshya 20:949d13045431 319 {
lakshya 20:949d13045431 320 uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val;
lakshya 20:949d13045431 321 }
lakshya 20:949d13045431 322 void clearTxBuf()
lakshya 20:949d13045431 323 {
lakshya 20:949d13045431 324 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
lakshya 20:949d13045431 325 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
lakshya 20:949d13045431 326 }
lakshya 20:949d13045431 327 uint8_t setFrequency(double centre)
lakshya 20:949d13045431 328 {
lakshya 20:949d13045431 329 uint8_t fbsel = 0x40;
lakshya 20:949d13045431 330 if (centre >= 480.0) {
lakshya 20:949d13045431 331 centre /= 2;
lakshya 20:949d13045431 332 fbsel |= 0x20;
lakshya 20:949d13045431 333 }
lakshya 20:949d13045431 334 centre /= 10.0;
lakshya 20:949d13045431 335 double integerPart = floor(centre);
lakshya 20:949d13045431 336 double fractionalPart = centre - integerPart;
lakshya 20:949d13045431 337
lakshya 20:949d13045431 338 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
lakshya 20:949d13045431 339 fbsel |= fb;
lakshya 20:949d13045431 340 uint16_t fc = fractionalPart * 64000;
lakshya 20:949d13045431 341 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
lakshya 20:949d13045431 342 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
lakshya 20:949d13045431 343 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
lakshya 20:949d13045431 344 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
lakshya 20:949d13045431 345 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
lakshya 20:949d13045431 346 return 0;
lakshya 20:949d13045431 347 }
lakshya 20:949d13045431 348 void init_spi()
lakshya 20:949d13045431 349 {
lakshya 20:949d13045431 350 cs=1; // chip must be deselected
lakshya 20:949d13045431 351 wait(0.1);
lakshya 20:949d13045431 352 spi.format(8,0);
lakshya 20:949d13045431 353 spi.frequency(10000000); //10MHz SCLK
lakshya 20:949d13045431 354 }
lakshya 20:949d13045431 355 void Init_BEACON_HW()
lakshya 20:949d13045431 356 {
lakshya 20:949d13045431 357 printf("Init HW\n\r");
lakshya 20:949d13045431 358 ERROR_CHECK=0;
lakshya 20:949d13045431 359 wait(0.1);
lakshya 20:949d13045431 360 int BCN_INIT_COUNTER = 1;
lakshya 20:949d13045431 361 while(BCN_INIT_COUNTER)
lakshya 20:949d13045431 362 {
lakshya 20:949d13045431 363 init_spi();
lakshya 20:949d13045431 364 printf("init spi\r\n");
lakshya 20:949d13045431 365 //should either have a flag for invalid SPI or discard this for actual case or add reset
lakshya 20:949d13045431 366 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08)
lakshya 20:949d13045431 367 {
lakshya 20:949d13045431 368 pc_bcn.printf("spi connection valid\r\n");
lakshya 20:949d13045431 369 reset_rfm(0);
azaddevarm 23:c65456ec5e61 370 Set_BCN_TX_STATUS(BCN_INIT_SUCCESS);
lakshya 20:949d13045431 371 break;
lakshya 20:949d13045431 372 }
lakshya 20:949d13045431 373 else if (BCN_INIT_COUNTER == 1)
lakshya 20:949d13045431 374 {
lakshya 20:949d13045431 375 pc_bcn.printf("error in spi connection\r\n");
lakshya 20:949d13045431 376 reset_rfm(1);
lakshya 20:949d13045431 377 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
lakshya 20:949d13045431 378 wait(0.1); //takes time to reset
lakshya 20:949d13045431 379 }
lakshya 20:949d13045431 380 else if (BCN_INIT_COUNTER == 2)
lakshya 20:949d13045431 381 {
lakshya 20:949d13045431 382 pc_bcn.printf("error in spi connection\r\n");
lakshya 20:949d13045431 383 reset_rfm(1);
lakshya 20:949d13045431 384 BCN_TX_SW_STATUS = 0b00000011; //Device disabled
lakshya 20:949d13045431 385 //reset BCN HW using switch here
lakshya 20:949d13045431 386 }
lakshya 20:949d13045431 387 else
lakshya 20:949d13045431 388 {
lakshya 20:949d13045431 389 pc_bcn.printf("BCN_TX_FAILURE\r\n");
azaddevarm 23:c65456ec5e61 390 Set_BCN_TX_STATUS(BCN_INIT_FAILURE);
lakshya 20:949d13045431 391 break;
lakshya 20:949d13045431 392 }
lakshya 20:949d13045431 393 BCN_INIT_COUNTER++;
lakshya 20:949d13045431 394 }
lakshya 20:949d13045431 395
azaddevarm 23:c65456ec5e61 396 if(BCN_TX_STATUS == BCN_INIT_SUCCESS)
lakshya 20:949d13045431 397 {
lakshya 20:949d13045431 398 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
lakshya 20:949d13045431 399 wait(0.1); //takes time to reset
lakshya 20:949d13045431 400
lakshya 20:949d13045431 401 clearTxBuf();
lakshya 20:949d13045431 402
lakshya 20:949d13045431 403 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
lakshya 20:949d13045431 404
lakshya 20:949d13045431 405 //txfifoalmostempty
lakshya 20:949d13045431 406 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30);
lakshya 20:949d13045431 407
lakshya 20:949d13045431 408 //txfifoalmostfull
lakshya 20:949d13045431 409 writereg(RF22_REG_7C_TX_FIFO_CONTROL1,50);
lakshya 20:949d13045431 410
lakshya 20:949d13045431 411
lakshya 20:949d13045431 412 //Packet-engine registers
lakshya 20:949d13045431 413 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00);
lakshya 20:949d13045431 414
lakshya 20:949d13045431 415 writereg(RF22_REG_33_HEADER_CONTROL2,0x08);
lakshya 20:949d13045431 416 writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00);
lakshya 20:949d13045431 417
lakshya 20:949d13045431 418 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state
lakshya 20:949d13045431 419 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state
lakshya 20:949d13045431 420
lakshya 20:949d13045431 421 setFrequency(435.0);
lakshya 20:949d13045431 422
lakshya 20:949d13045431 423 int i=3;
lakshya 20:949d13045431 424 while(i--)
lakshya 20:949d13045431 425 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
lakshya 20:949d13045431 426 {
lakshya 20:949d13045431 427 setFrequency(435.0);
lakshya 20:949d13045431 428 if (i==1)
lakshya 20:949d13045431 429 {pc_bcn.printf("frequency not set properly\r\n");
lakshya 20:949d13045431 430 reset_rfm(1);
lakshya 20:949d13045431 431 }
lakshya 20:949d13045431 432 }
lakshya 20:949d13045431 433
lakshya 20:949d13045431 434 //set Modem Configuration
lakshya 20:949d13045431 435 writereg(RF22_REG_58,0x80);
lakshya 20:949d13045431 436
lakshya 20:949d13045431 437 //Set Data rate - same for both long and short beacon
lakshya 20:949d13045431 438
lakshya 20:949d13045431 439 writereg(RF22_REG_6E_TX_DATA_RATE,0x0A);
azaddevarm 23:c65456ec5e61 440 writereg(RF22_REG_6F_TX_DATA_RATE,0x7C);//1280bps
azaddevarm 23:c65456ec5e61 441 writereg(RF22_REG_70_MODULATION_CONTROL1,0x20);//For data rates below 30kbps
lakshya 20:949d13045431 442
azaddevarm 23:c65456ec5e61 443 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//0x21 = FIFO mode with ook demodulation
lakshya 20:949d13045431 444
lakshya 20:949d13045431 445 //set tx power
lakshya 20:949d13045431 446 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
lakshya 20:949d13045431 447
lakshya 20:949d13045431 448 //TX_packet_length written later
lakshya 20:949d13045431 449 ERROR_CHECK = 0;
lakshya 20:949d13045431 450 printf("Done Init HW\n\r");
lakshya 20:949d13045431 451 }
lakshya 20:949d13045431 452 }
lakshya 20:949d13045431 453 bool Check_ACK_RECEIVED()
lakshya 20:949d13045431 454 {
lakshya 20:949d13045431 455 if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)
lakshya 20:949d13045431 456 {
lakshya 20:949d13045431 457 printf("Packet sent: ACK received\r\n");
lakshya 20:949d13045431 458 return 1;
lakshya 20:949d13045431 459 }
lakshya 20:949d13045431 460 else
lakshya 20:949d13045431 461 {
lakshya 20:949d13045431 462 pc_bcn.printf("Packet not sent\r\n");
lakshya 20:949d13045431 463 return 0;
lakshya 20:949d13045431 464 }
lakshya 20:949d13045431 465 }
lakshya 20:949d13045431 466 /*
lakshya 20:949d13045431 467 int main()
lakshya 20:949d13045431 468 {
lakshya 20:949d13045431 469 FCTN_BCN_INIT();
lakshya 20:949d13045431 470
lakshya 20:949d13045431 471 loop.attach(&FCTN_BCN_TX_MAIN, 10.0);//in actual case its 30.0
lakshya 20:949d13045431 472
lakshya 20:949d13045431 473 while(1);
lakshya 20:949d13045431 474
lakshya 20:949d13045431 475 }
azaddevarm 23:c65456ec5e61 476 */
azaddevarm 23:c65456ec5e61 477
azaddevarm 23:c65456ec5e61 478