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Dependencies:   FreescaleIAP mbed-rtos mbed

Fork of workinQM_10thDec by Team Fox

BCN.cpp@26:c8655e0ec73a, 2016-07-03 (annotated)

Committer:
azaddevarm
Date:
Sun Jul 03 19:25:48 2016 +0000
Revision:
26:c8655e0ec73a
Parent:
23:c65456ec5e61 
Updated with BCN v2.5, added BCN_SPND_TX

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
azaddevarm 26:c8655e0ec73a 32 extern uint8_t BCN_LONG_MSG_TYPE = 1;
azaddevarm 26:c8655e0ec73a 33 extern uint8_t LONG_HK_data[2][134];
azaddevarm 26:c8655e0ec73a 34
azaddevarm 26:c8655e0ec73a 35 extern DigitalOut BCN_SW(PIN14);
azaddevarm 26:c8655e0ec73a 36
lakshya 20:949d13045431 37 void FCTN_BCN_INIT()
lakshya 20:949d13045431 38 {
lakshya 20:949d13045431 39 pc_bcn.printf("FCTN_BCN_INIT\n");
lakshya 20:949d13045431 40 BCN_INIT_STATUS = 1;
lakshya 20:949d13045431 41 if( BCN_TX_SW_STATUS == 0b00000001 )
lakshya 20:949d13045431 42 Init_BEACON_HW();
lakshya 20:949d13045431 43 else Set_BCN_TX_STATUS(BCN_TX_DISABLED);
lakshya 20:949d13045431 44 // if(BCN_FEN == 0)//BCN_FEN is in flash
lakshya 20:949d13045431 45 // rf_sl_timeout.attach(&FCTN_BCN_FEN, RF_SILENCE_TIME);
lakshya 20:949d13045431 46 BCN_INIT_STATUS = 0;
lakshya 20:949d13045431 47 }
lakshya 20:949d13045431 48
lakshya 20:949d13045431 49 extern uint32_t FCTN_BAE_RD_FLASH_ENTITY(uint16_t);
lakshya 20:949d13045431 50 extern void FCTN_BAE_WR_FLASH(uint16_t ,uint32_t );
lakshya 20:949d13045431 51
lakshya 20:949d13045431 52 void FCTN_BCN_FEN(const void*)
lakshya 20:949d13045431 53 {
lakshya 20:949d13045431 54 pc_bcn.printf("FCTN_FEN\n\r");
lakshya 20:949d13045431 55 BCN_FEN = 1;//write this value to flash
lakshya 20:949d13045431 56 uint32_t FLASH_DATA;
lakshya 20:949d13045431 57 FLASH_DATA = FCTN_BAE_RD_FLASH_ENTITY(0);
lakshya 20:949d13045431 58 FLASH_DATA = (FLASH_DATA | 0x00001000);//see if uint8 to uint32 conversion works
lakshya 20:949d13045431 59 FCTN_BAE_WR_FLASH(0,FLASH_DATA);
lakshya 20:949d13045431 60 }
lakshya 20:949d13045431 61 void FCTN_BCN_TX_MAIN()
lakshya 20:949d13045431 62 {
lakshya 20:949d13045431 63 ERROR_CHECK=0;
lakshya 20:949d13045431 64 pc_bcn.printf("\n\nFCTN_BCN_TX_MAIN\n\r");
lakshya 20:949d13045431 65 t_i.start();
lakshya 20:949d13045431 66 int begin = t_i.read_us();
lakshya 20:949d13045431 67 //int begins,beginl,endl;
lakshya 20:949d13045431 68 int begintx,endtx;
lakshya 20:949d13045431 69 BCN_TX_MAIN_STATUS = 1;
lakshya 20:949d13045431 70 BCN_TX_MAIN_COUNTER++;
lakshya 20:949d13045431 71 if(BCN_FEN == 1)
lakshya 20:949d13045431 72 {
lakshya 20:949d13045431 73 if(BCN_TX_SW_STATUS == 0b00000001)
azaddevarm 26:c8655e0ec73a 74 {
azaddevarm 26:c8655e0ec73a 75 Init_BEACON_HW();
azaddevarm 26:c8655e0ec73a 76 if( BCN_TX_STATUS == BCN_INIT_SUCCESS )
lakshya 20:949d13045431 77 {
azaddevarm 26:c8655e0ec73a 78 //Measure and store BCN temperature in BCN_TS_BUFFER
azaddevarm 26:c8655e0ec73a 79 uint8_t temp_temp = check_Temperature();
azaddevarm 26:c8655e0ec73a 80 if( temp_temp != 0xFF )
azaddevarm 26:c8655e0ec73a 81 BCN_TMP = temp_temp;
azaddevarm 26:c8655e0ec73a 82 pc_bcn.printf("temperature = %d\n\r",BCN_TMP);
azaddevarm 26:c8655e0ec73a 83 //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER
azaddevarm 26:c8655e0ec73a 84 if(BCN_SPND_TX == 1 )
azaddevarm 26:c8655e0ec73a 85 {
azaddevarm 26:c8655e0ec73a 86 Set_BCN_TX_STATUS(BCN_TX_SUSPENDED);
azaddevarm 26:c8655e0ec73a 87 BCN_TX_MAIN_STATUS = 0;
azaddevarm 26:c8655e0ec73a 88 }
azaddevarm 26:c8655e0ec73a 89 else
azaddevarm 26:c8655e0ec73a 90 {
azaddevarm 26:c8655e0ec73a 91 //transmit short beacon and long beacon
azaddevarm 26:c8655e0ec73a 92 begintx = t_i.read_us();
azaddevarm 26:c8655e0ec73a 93 BCN_TX();
azaddevarm 26:c8655e0ec73a 94 endtx = t_i.read_us();
lakshya 20:949d13045431 95
azaddevarm 26:c8655e0ec73a 96 if(Check_ACK_RECEIVED() == 1)
azaddevarm 26:c8655e0ec73a 97 {
azaddevarm 26:c8655e0ec73a 98 Set_BCN_TX_STATUS(BCN_TX_SUCCESS);
azaddevarm 26:c8655e0ec73a 99 BCN_TX_MAIN_STATUS = 0;
azaddevarm 26:c8655e0ec73a 100 }
azaddevarm 26:c8655e0ec73a 101 else
azaddevarm 26:c8655e0ec73a 102 {
azaddevarm 26:c8655e0ec73a 103 Set_BCN_TX_STATUS(BCN_TX_FAILURE);
azaddevarm 26:c8655e0ec73a 104 //BCN_FAIL_COUNT++;
azaddevarm 26:c8655e0ec73a 105 //Init_BEACON_HW();
azaddevarm 26:c8655e0ec73a 106 BCN_TX_MAIN_STATUS = 0;
azaddevarm 26:c8655e0ec73a 107
azaddevarm 26:c8655e0ec73a 108 }
azaddevarm 26:c8655e0ec73a 109 }
azaddevarm 26:c8655e0ec73a 110 }
lakshya 20:949d13045431 111 }
lakshya 20:949d13045431 112 else
lakshya 20:949d13045431 113 {
lakshya 20:949d13045431 114 Set_BCN_TX_STATUS(BCN_TX_DISABLED);
lakshya 20:949d13045431 115 BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 116 }
lakshya 20:949d13045431 117 }
lakshya 20:949d13045431 118 else
lakshya 20:949d13045431 119 {
lakshya 20:949d13045431 120 Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on.
lakshya 20:949d13045431 121 BCN_TX_MAIN_STATUS = 0;
lakshya 20:949d13045431 122 }
lakshya 20:949d13045431 123 t_i.stop();
lakshya 20:949d13045431 124 int end = t_i.read_us();
lakshya 20:949d13045431 125 pc_bcn.printf("The time required for FCTN_BCN_TX_MAIN is %d useconds\r\n", end-begin);
lakshya 20:949d13045431 126 pc_bcn.printf("The time required for FCTN_BCN_TX is %d useconds\r\n", endtx-begintx);
lakshya 20:949d13045431 127 /*
lakshya 20:949d13045431 128 pc_bcn.printf("The time required for Short_BCN is %d useconds\r\n", beginl-begins);
lakshya 20:949d13045431 129 pc_bcn.printf("The time required for Long_BCN is %d useconds\r\n", endtx-beginl);
lakshya 20:949d13045431 130 */
lakshya 20:949d13045431 131 ERROR_CHECK = 0;
lakshya 20:949d13045431 132
lakshya 20:949d13045431 133 }
lakshya 20:949d13045431 134
lakshya 20:949d13045431 135 void Set_BCN_TX_STATUS(uint8_t STATUS)
lakshya 20:949d13045431 136 {
lakshya 20:949d13045431 137 BCN_TX_STATUS = STATUS;
lakshya 20:949d13045431 138 }
lakshya 20:949d13045431 139
lakshya 20:949d13045431 140 uint8_t check_Temperature()
lakshya 20:949d13045431 141 {
lakshya 20:949d13045431 142 uint8_t temperature;
lakshya 20:949d13045431 143 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x00);//set ADC to temp measurement
azaddevarm 26:c8655e0ec73a 144 writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x60);//measure in degree celsius
lakshya 20:949d13045431 145 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80);//start adc
lakshya 20:949d13045431 146 wait(0.1);
azaddevarm 26:c8655e0ec73a 147 if( readreg(RF22_REG_0F_ADC_CONFIGURATION) & 0x80 == 0x00 )
azaddevarm 26:c8655e0ec73a 148 { temperature = readreg(RF22_REG_11_ADC_Value);
azaddevarm 26:c8655e0ec73a 149 temperature = (float)temperature - 64;
azaddevarm 26:c8655e0ec73a 150 }
azaddevarm 26:c8655e0ec73a 151 else temperature = 0xFF;
lakshya 20:949d13045431 152 return temperature;
lakshya 20:949d13045431 153 }
lakshya 20:949d13045431 154
lakshya 20:949d13045431 155 void BCN_TX()
lakshya 20:949d13045431 156 {
lakshya 20:949d13045431 157 printf("BCN_TX\n\r");
lakshya 20:949d13045431 158 writereg(RF22_REG_6E_TX_DATA_RATE,0x0A);
lakshya 20:949d13045431 159 writereg(RF22_REG_6F_TX_DATA_RATE,0x7C);//1280bps
lakshya 20:949d13045431 160
lakshya 20:949d13045431 161 wait(0.02);
lakshya 20:949d13045431 162
lakshya 20:949d13045431 163 uint32_t timeout_count = 10e5;
lakshya 20:949d13045431 164 //extract values from short_beacon[]
azaddevarm 26:c8655e0ec73a 165 /*
lakshya 20:949d13045431 166 uint8_t Long_beacon[LONG_TX_DATA];
lakshya 20:949d13045431 167 for(int i = 0;i<LONG_TX_DATA;i++)
lakshya 20:949d13045431 168 {
lakshya 20:949d13045431 169 Long_beacon[i] = 0xFF;
lakshya 20:949d13045431 170 }
lakshya 20:949d13045431 171
lakshya 20:949d13045431 172 struct Short_beacon
lakshya 20:949d13045431 173 {
lakshya 20:949d13045431 174 uint8_t Voltage[1];
lakshya 20:949d13045431 175 uint8_t AngularSpeed[2];
lakshya 20:949d13045431 176 uint8_t SubsystemStatus[1];
lakshya 20:949d13045431 177 uint8_t Temp[3];
lakshya 20:949d13045431 178 uint8_t ErrorFlag[1];
lakshya 20:949d13045431 179 }Shortbeacon = { {0xFF}, {0xFF, 0xFF} , {0xFF},{0xFF,0xFF,0xFF}, {0xFF} };
lakshya 20:949d13045431 180
lakshya 20:949d13045431 181 //filling hk data
lakshya 20:949d13045431 182 //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 183 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]};
azaddevarm 26:c8655e0ec73a 184 */
lakshya 20:949d13045431 185 //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ??
lakshya 20:949d13045431 186 clearTxBuf(); //writing data first time
lakshya 20:949d13045431 187
azaddevarm 23:c65456ec5e61 188 int byte_counter;
lakshya 20:949d13045431 189 uint8_t onebyte[4] = {0x81,0xA6,0xBE,0x4E};
lakshya 20:949d13045431 190 uint8_t zerobyte[4] = {0x7E,0x59,0x41,0xB1};
lakshya 20:949d13045431 191 for (byte_counter = 0; byte_counter <15 ; byte_counter++)
lakshya 20:949d13045431 192 {
lakshya 20:949d13045431 193 for(int j = 7; j >= 0 ; j--)
lakshya 20:949d13045431 194 {
lakshya 20:949d13045431 195 cs = 0;
lakshya 20:949d13045431 196 spi.write(0xFF);
azaddevarm 26:c8655e0ec73a 197 if((SHORT_HK_data[byte_counter] & (uint8_t) pow(2.0,j))!= pow(2.0,j))
lakshya 20:949d13045431 198 {
lakshya 20:949d13045431 199 //byte=0x00;
lakshya 20:949d13045431 200 spi.write(zerobyte[0]);
lakshya 20:949d13045431 201 spi.write(zerobyte[1]);
lakshya 20:949d13045431 202 spi.write(zerobyte[2]);
lakshya 20:949d13045431 203 spi.write(zerobyte[3]);
lakshya 20:949d13045431 204 }
lakshya 20:949d13045431 205 else
lakshya 20:949d13045431 206 {
lakshya 20:949d13045431 207 //byte=0xFF;
lakshya 20:949d13045431 208 spi.write(onebyte[0]);
lakshya 20:949d13045431 209 spi.write(onebyte[1]);
lakshya 20:949d13045431 210 spi.write(onebyte[2]);
lakshya 20:949d13045431 211 spi.write(onebyte[3]);
lakshya 20:949d13045431 212 }
lakshya 20:949d13045431 213 cs = 1;
lakshya 20:949d13045431 214 /*
lakshya 20:949d13045431 215 spi.write(byte);
lakshya 20:949d13045431 216 spi.write(byte);
lakshya 20:949d13045431 217 spi.write(byte);
lakshya 20:949d13045431 218 spi.write(byte); //Each bit is written 32 times
lakshya 20:949d13045431 219 */
lakshya 20:949d13045431 220
lakshya 20:949d13045431 221 }
lakshya 20:949d13045431 222
lakshya 20:949d13045431 223 if(byte_counter == 1)
azaddevarm 23:c65456ec5e61 224 if(BCN_SPND_TX != 1) //Check for flag update by COM
azaddevarm 23:c65456ec5e61 225 {
azaddevarm 23:c65456ec5e61 226 //Set to Tx mode
azaddevarm 23:c65456ec5e61 227 writereg(RF22_REG_07_OPERATING_MODE1,0x08); //txon
azaddevarm 23:c65456ec5e61 228 wait(0.1);// takes time to set to tx mode hence the delay of 0.1.
azaddevarm 23:c65456ec5e61 229 }
azaddevarm 23:c65456ec5e61 230
lakshya 20:949d13045431 231 //testing level
lakshya 20:949d13045431 232 /*if(byte_counter > 0)
lakshya 20:949d13045431 233 while(1)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x40) == 0x00)break;else
lakshya 20:949d13045431 234 {
lakshya 20:949d13045431 235 pc_bcn.printf("w_f_empty1\n\r");
lakshya 20:949d13045431 236 //reset_rfm(1);
lakshya 20:949d13045431 237 }*/
lakshya 20:949d13045431 238
lakshya 20:949d13045431 239
lakshya 20:949d13045431 240 //Check for fifoThresh
lakshya 20:949d13045431 241
lakshya 20:949d13045431 242 if(byte_counter > 0)
lakshya 20:949d13045431 243 {
azaddevarm 26:c8655e0ec73a 244 wait_ms(25);
azaddevarm 26:c8655e0ec73a 245 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else if(timeout_count == 1) reset_rfm(1);
azaddevarm 26:c8655e0ec73a 246 {
azaddevarm 26:c8655e0ec73a 247 //pc_bcn.printf("w_f_empty\n");
azaddevarm 26:c8655e0ec73a 248 //reset_rfm(1);
azaddevarm 26:c8655e0ec73a 249 }
azaddevarm 26:c8655e0ec73a 250 timeout_count = 10e5;
lakshya 20:949d13045431 251 }
lakshya 20:949d13045431 252
lakshya 20:949d13045431 253 /* if(byte_counter%2==0 && byte_counter)
lakshya 20:949d13045431 254 while(1)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x40) == 0x00)break;else
lakshya 20:949d13045431 255 {
lakshya 20:949d13045431 256 pc_bcn.printf("W = %d\r\n",byte_counter);
lakshya 20:949d13045431 257 }*/
lakshya 20:949d13045431 258 //pc_bcn.printf("W = %d\r\n",byte_counter);
lakshya 20:949d13045431 259 }
lakshya 20:949d13045431 260
azaddevarm 26:c8655e0ec73a 261 for(byte_counter = 15;byte_counter<149;byte_counter++)
lakshya 20:949d13045431 262 {
lakshya 20:949d13045431 263 cs = 0;
lakshya 20:949d13045431 264 spi.write(0xFF);
azaddevarm 26:c8655e0ec73a 265 spi.write(LONG_HK_data[BCN_LONG_MSG_TYPE][byte_counter-15]);
lakshya 20:949d13045431 266 cs = 1;
lakshya 20:949d13045431 267
lakshya 20:949d13045431 268 if((byte_counter-15)%32==0)
lakshya 20:949d13045431 269 { //Check for fifoThresh
lakshya 20:949d13045431 270 wait_ms(25);
azaddevarm 26:c8655e0ec73a 271 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else if(timeout_count == 1) reset_rfm(1);
lakshya 20:949d13045431 272 {
lakshya 20:949d13045431 273 //pc_bcn.printf("Reset\n");
lakshya 20:949d13045431 274 //reset_rfm(1);
lakshya 20:949d13045431 275 }
lakshya 20:949d13045431 276 }
lakshya 20:949d13045431 277
lakshya 20:949d13045431 278 }
lakshya 20:949d13045431 279 wait_ms(70);
lakshya 20:949d13045431 280 //Check for fifoThresh
azaddevarm 26:c8655e0ec73a 281 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x40) == 0x00)break;else if(timeout_count == 1) reset_rfm(1);
lakshya 20:949d13045431 282 {
azaddevarm 26:c8655e0ec73a 283 //pc_bcn.printf("Waiting for fifo to empty\r\n");
lakshya 20:949d13045431 284 }
lakshya 20:949d13045431 285
lakshya 20:949d13045431 286 //Check for packetsent interrupt
lakshya 20:949d13045431 287 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;else if(timeout_count == 1) reset_rfm(1);
lakshya 20:949d13045431 288
lakshya 20:949d13045431 289 //pc_bcn.printf("Short packet sent, bytes written = %d\r\n",byte_count);
lakshya 20:949d13045431 290
lakshya 20:949d13045431 291 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
lakshya 20:949d13045431 292
lakshya 20:949d13045431 293 }
azaddevarm 23:c65456ec5e61 294
lakshya 20:949d13045431 295 void reset_rfm(uint8_t fl)
lakshya 20:949d13045431 296 {
lakshya 20:949d13045431 297 if (fl ==1 && ERROR_CHECK ==0)
lakshya 20:949d13045431 298 { BCN_FAIL_COUNT++;
lakshya 20:949d13045431 299 ERROR_CHECK=1;
lakshya 20:949d13045431 300 printf("BCN_FAIL_COUNT++\n");
lakshya 20:949d13045431 301 }
lakshya 20:949d13045431 302 else if(fl == 0)
lakshya 20:949d13045431 303 {
lakshya 20:949d13045431 304 BCN_FAIL_COUNT = 0;
lakshya 20:949d13045431 305 ERROR_CHECK=0;
lakshya 20:949d13045431 306 }
lakshya 20:949d13045431 307 }
lakshya 20:949d13045431 308 void writereg(uint8_t reg,uint8_t val)
lakshya 20:949d13045431 309 {
lakshya 20:949d13045431 310
lakshya 20:949d13045431 311 uint8_t count = 0;
lakshya 20:949d13045431 312 for(;;count++)
lakshya 20:949d13045431 313 {
lakshya 20:949d13045431 314 int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1;
lakshya 20:949d13045431 315 if(reg != 0x7 && reg != 0x58 && reg != 0xF)
lakshya 20:949d13045431 316 {
lakshya 20:949d13045431 317 read_val = readreg(reg);
lakshya 20:949d13045431 318 if (read_val == val)
lakshya 20:949d13045431 319 {
lakshya 20:949d13045431 320 break;
lakshya 20:949d13045431 321 }
azaddevarm 26:c8655e0ec73a 322 else if(count == 2)
lakshya 20:949d13045431 323 {
lakshya 20:949d13045431 324 reset_rfm(1); printf("reg = 0x%X\n",reg);break;
lakshya 20:949d13045431 325 }
lakshya 20:949d13045431 326 else init_spi();
lakshya 20:949d13045431 327 }
lakshya 20:949d13045431 328 else
lakshya 20:949d13045431 329 break;
lakshya 20:949d13045431 330 }
lakshya 20:949d13045431 331 }
lakshya 20:949d13045431 332 uint8_t readreg(uint8_t reg)
lakshya 20:949d13045431 333 {
lakshya 20:949d13045431 334 uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val;
lakshya 20:949d13045431 335 }
lakshya 20:949d13045431 336 void clearTxBuf()
lakshya 20:949d13045431 337 {
lakshya 20:949d13045431 338 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
lakshya 20:949d13045431 339 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
lakshya 20:949d13045431 340 }
lakshya 20:949d13045431 341 uint8_t setFrequency(double centre)
lakshya 20:949d13045431 342 {
lakshya 20:949d13045431 343 uint8_t fbsel = 0x40;
lakshya 20:949d13045431 344 if (centre >= 480.0) {
lakshya 20:949d13045431 345 centre /= 2;
lakshya 20:949d13045431 346 fbsel |= 0x20;
lakshya 20:949d13045431 347 }
lakshya 20:949d13045431 348 centre /= 10.0;
lakshya 20:949d13045431 349 double integerPart = floor(centre);
lakshya 20:949d13045431 350 double fractionalPart = centre - integerPart;
lakshya 20:949d13045431 351
lakshya 20:949d13045431 352 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
lakshya 20:949d13045431 353 fbsel |= fb;
lakshya 20:949d13045431 354 uint16_t fc = fractionalPart * 64000;
lakshya 20:949d13045431 355 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
lakshya 20:949d13045431 356 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
lakshya 20:949d13045431 357 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
lakshya 20:949d13045431 358 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
lakshya 20:949d13045431 359 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
lakshya 20:949d13045431 360 return 0;
lakshya 20:949d13045431 361 }
lakshya 20:949d13045431 362 void init_spi()
lakshya 20:949d13045431 363 {
lakshya 20:949d13045431 364 cs=1; // chip must be deselected
lakshya 20:949d13045431 365 wait(0.1);
lakshya 20:949d13045431 366 spi.format(8,0);
lakshya 20:949d13045431 367 spi.frequency(10000000); //10MHz SCLK
lakshya 20:949d13045431 368 }
lakshya 20:949d13045431 369 void Init_BEACON_HW()
lakshya 20:949d13045431 370 {
lakshya 20:949d13045431 371 printf("Init HW\n\r");
lakshya 20:949d13045431 372 ERROR_CHECK=0;
lakshya 20:949d13045431 373 wait(0.1);
lakshya 20:949d13045431 374 int BCN_INIT_COUNTER = 1;
lakshya 20:949d13045431 375 while(BCN_INIT_COUNTER)
lakshya 20:949d13045431 376 {
lakshya 20:949d13045431 377 init_spi();
lakshya 20:949d13045431 378 printf("init spi\r\n");
lakshya 20:949d13045431 379 //should either have a flag for invalid SPI or discard this for actual case or add reset
lakshya 20:949d13045431 380 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08)
lakshya 20:949d13045431 381 {
lakshya 20:949d13045431 382 pc_bcn.printf("spi connection valid\r\n");
lakshya 20:949d13045431 383 reset_rfm(0);
azaddevarm 23:c65456ec5e61 384 Set_BCN_TX_STATUS(BCN_INIT_SUCCESS);
lakshya 20:949d13045431 385 break;
lakshya 20:949d13045431 386 }
lakshya 20:949d13045431 387 else if (BCN_INIT_COUNTER == 1)
lakshya 20:949d13045431 388 {
lakshya 20:949d13045431 389 pc_bcn.printf("error in spi connection\r\n");
lakshya 20:949d13045431 390 reset_rfm(1);
lakshya 20:949d13045431 391 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
lakshya 20:949d13045431 392 wait(0.1); //takes time to reset
lakshya 20:949d13045431 393 }
lakshya 20:949d13045431 394 else if (BCN_INIT_COUNTER == 2)
lakshya 20:949d13045431 395 {
lakshya 20:949d13045431 396 pc_bcn.printf("error in spi connection\r\n");
lakshya 20:949d13045431 397 reset_rfm(1);
lakshya 20:949d13045431 398 BCN_TX_SW_STATUS = 0b00000011; //Device disabled
lakshya 20:949d13045431 399 //reset BCN HW using switch here
lakshya 20:949d13045431 400 }
lakshya 20:949d13045431 401 else
lakshya 20:949d13045431 402 {
lakshya 20:949d13045431 403 pc_bcn.printf("BCN_TX_FAILURE\r\n");
azaddevarm 23:c65456ec5e61 404 Set_BCN_TX_STATUS(BCN_INIT_FAILURE);
lakshya 20:949d13045431 405 break;
lakshya 20:949d13045431 406 }
lakshya 20:949d13045431 407 BCN_INIT_COUNTER++;
lakshya 20:949d13045431 408 }
lakshya 20:949d13045431 409
azaddevarm 23:c65456ec5e61 410 if(BCN_TX_STATUS == BCN_INIT_SUCCESS)
lakshya 20:949d13045431 411 {
lakshya 20:949d13045431 412 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
lakshya 20:949d13045431 413 wait(0.1); //takes time to reset
lakshya 20:949d13045431 414
lakshya 20:949d13045431 415 clearTxBuf();
lakshya 20:949d13045431 416
lakshya 20:949d13045431 417 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
lakshya 20:949d13045431 418
lakshya 20:949d13045431 419 //txfifoalmostempty
lakshya 20:949d13045431 420 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30);
lakshya 20:949d13045431 421
lakshya 20:949d13045431 422 //txfifoalmostfull
lakshya 20:949d13045431 423 writereg(RF22_REG_7C_TX_FIFO_CONTROL1,50);
lakshya 20:949d13045431 424
lakshya 20:949d13045431 425
lakshya 20:949d13045431 426 //Packet-engine registers
lakshya 20:949d13045431 427 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00);
lakshya 20:949d13045431 428
lakshya 20:949d13045431 429 writereg(RF22_REG_33_HEADER_CONTROL2,0x08);
lakshya 20:949d13045431 430 writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00);
lakshya 20:949d13045431 431
lakshya 20:949d13045431 432 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state
lakshya 20:949d13045431 433 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state
lakshya 20:949d13045431 434
lakshya 20:949d13045431 435 setFrequency(435.0);
lakshya 20:949d13045431 436
lakshya 20:949d13045431 437 int i=3;
lakshya 20:949d13045431 438 while(i--)
lakshya 20:949d13045431 439 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
lakshya 20:949d13045431 440 {
lakshya 20:949d13045431 441 setFrequency(435.0);
lakshya 20:949d13045431 442 if (i==1)
lakshya 20:949d13045431 443 {pc_bcn.printf("frequency not set properly\r\n");
lakshya 20:949d13045431 444 reset_rfm(1);
lakshya 20:949d13045431 445 }
lakshya 20:949d13045431 446 }
lakshya 20:949d13045431 447
lakshya 20:949d13045431 448 //set Modem Configuration
lakshya 20:949d13045431 449 writereg(RF22_REG_58,0x80);
lakshya 20:949d13045431 450
lakshya 20:949d13045431 451 //Set Data rate - same for both long and short beacon
lakshya 20:949d13045431 452
lakshya 20:949d13045431 453 writereg(RF22_REG_6E_TX_DATA_RATE,0x0A);
azaddevarm 23:c65456ec5e61 454 writereg(RF22_REG_6F_TX_DATA_RATE,0x7C);//1280bps
azaddevarm 23:c65456ec5e61 455 writereg(RF22_REG_70_MODULATION_CONTROL1,0x20);//For data rates below 30kbps
lakshya 20:949d13045431 456
azaddevarm 23:c65456ec5e61 457 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//0x21 = FIFO mode with ook demodulation
lakshya 20:949d13045431 458
lakshya 20:949d13045431 459 //set tx power
lakshya 20:949d13045431 460 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
lakshya 20:949d13045431 461
lakshya 20:949d13045431 462 //TX_packet_length written later
lakshya 20:949d13045431 463 ERROR_CHECK = 0;
lakshya 20:949d13045431 464 printf("Done Init HW\n\r");
lakshya 20:949d13045431 465 }
lakshya 20:949d13045431 466 }
lakshya 20:949d13045431 467 bool Check_ACK_RECEIVED()
lakshya 20:949d13045431 468 {
lakshya 20:949d13045431 469 if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)
lakshya 20:949d13045431 470 {
lakshya 20:949d13045431 471 printf("Packet sent: ACK received\r\n");
lakshya 20:949d13045431 472 return 1;
lakshya 20:949d13045431 473 }
lakshya 20:949d13045431 474 else
lakshya 20:949d13045431 475 {
lakshya 20:949d13045431 476 pc_bcn.printf("Packet not sent\r\n");
lakshya 20:949d13045431 477 return 0;
lakshya 20:949d13045431 478 }
lakshya 20:949d13045431 479 }
lakshya 20:949d13045431 480 /*
lakshya 20:949d13045431 481 int main()
lakshya 20:949d13045431 482 {
lakshya 20:949d13045431 483 FCTN_BCN_INIT();
lakshya 20:949d13045431 484
lakshya 20:949d13045431 485 loop.attach(&FCTN_BCN_TX_MAIN, 10.0);//in actual case its 30.0
lakshya 20:949d13045431 486
lakshya 20:949d13045431 487 while(1);
lakshya 20:949d13045431 488
lakshya 20:949d13045431 489 }
azaddevarm 23:c65456ec5e61 490 */
azaddevarm 23:c65456ec5e61 491
azaddevarm 26:c8655e0ec73a 492 void FCTN_BCN_SPND_TX()
azaddevarm 26:c8655e0ec73a 493 {
azaddevarm 26:c8655e0ec73a 494 BCN_SPND_TX = 1;
azaddevarm 26:c8655e0ec73a 495 if( BCN_TX_MAIN_STATUS == 1 && BCN_TX_SW_STATUS == 1 )
azaddevarm 26:c8655e0ec73a 496 {
azaddevarm 26:c8655e0ec73a 497 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
azaddevarm 26:c8655e0ec73a 498 if( readreg(RF22_REG_07_OPERATING_MODE1) & 0x08 == 0x08 )
azaddevarm 26:c8655e0ec73a 499 {
azaddevarm 26:c8655e0ec73a 500 BCN_SW = 0;
azaddevarm 26:c8655e0ec73a 501 BCN_TX_SW_STATUS = 3;
azaddevarm 26:c8655e0ec73a 502 }
azaddevarm 26:c8655e0ec73a 503 }
azaddevarm 26:c8655e0ec73a 504 }
azaddevarm 23:c65456ec5e61 505