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@19:79e69017c855, 2016-06-04 (annotated)

Committer:
lakshya
Date:
Sat Jun 04 11:29:13 2016 +0000
Revision:
19:79e69017c855
Parent:
18:3662058a7c10
Child:
20:949d13045431
before going home

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bragadeesh153 12:af1d7e18b868 1
sakthipriya 0:7b4c00e3912f 2 #include "BCN.h"
sakthipriya 0:7b4c00e3912f 3 #include <stdio.h>
sakthipriya 0:7b4c00e3912f 4 #include "pin_config.h"
Bragadeesh153 12:af1d7e18b868 5 //Check the pin names
Bragadeesh153 12:af1d7e18b868 6 //Takes max 4.3 sec in void FCTN_BCN_TX_MAIN() (temp.calc. + long_beacon + short_beacon)
sakthipriya 0:7b4c00e3912f 7
sakthipriya 0:7b4c00e3912f 8 Serial pc_bcn(USBTX, USBRX); //tx,rx
Bragadeesh153 12:af1d7e18b868 9 SPI spi(PIN16, PIN17, PIN15); // mosi, miso, sclk
Bragadeesh153 13:fb7facaf308b 10 DigitalOut cs(PIN6); //slave select or chip select
sakthipriya 0:7b4c00e3912f 11 Timer t_i;
Bragadeesh153 12:af1d7e18b868 12 Timeout rf_sl_timeout;
sakthipriya 0:7b4c00e3912f 13 Ticker loop;
sakthipriya 0:7b4c00e3912f 14
sakthipriya 0:7b4c00e3912f 15 //GLOBAL VARIABLES
Bragadeesh153 12:af1d7e18b868 16 uint8_t BCN_INIT_STATUS = 0;
Bragadeesh153 12:af1d7e18b868 17 uint8_t BCN_TX_MAIN_STATUS = 0;
Bragadeesh153 12:af1d7e18b868 18 uint8_t BCN_TX_STATUS = 0;
sakthipriya 0:7b4c00e3912f 19 uint8_t BCN_TX_EN = 1; //hardcoding for now //check where is this variable toggled??
lakshya 19:79e69017c855 20 uint8_t BCN_FEN = 0; //hardcoding for now //write this value to flash // CHANGED WILL BE UPDATED AUTOMATICALLY
sakthipriya 0:7b4c00e3912f 21 uint8_t BCN_STANDBY = 0; //hardcoding for now //check where is this variable toggled??
Bragadeesh153 12:af1d7e18b868 22 uint8_t BCN_TS_BUFFER = 0; // For Temperature
sakthipriya 0:7b4c00e3912f 23
lakshya 19:79e69017c855 24 /*for long bcn */
lakshya 19:79e69017c855 25 uint8_t *L_BCN=NULL;
lakshya 19:79e69017c855 26 /*see if this works.!? else see uint8_t L_BCN[125] its kind of buffer */
lakshya 19:79e69017c855 27
lakshya 19:79e69017c855 28 /*acquiring data for short beacon*/
lakshya 19:79e69017c855 29 /*try using a new convertion algo if quant data doesn't work having presion of +- 0.2 from float to 4 bit made in some other file*/
lakshya 19:79e69017c855 30 //extern BAE_HK_actual actual_data;
lakshya 19:79e69017c855 31
Bragadeesh153 12:af1d7e18b868 32 void FCTN_BCN_INIT()
sakthipriya 0:7b4c00e3912f 33 {
Bragadeesh153 12:af1d7e18b868 34 pc_bcn.printf("FCTN_BCN_INIT\n");
sakthipriya 0:7b4c00e3912f 35 BCN_INIT_STATUS = 1;
lakshya 18:3662058a7c10 36 /// if(BCN_FEN == 0)
lakshya 18:3662058a7c10 37 /// rf_sl_timeout.attach(&FCTN_BCN_FEN, 70);//actually 30 \\ so basically not able to call the interrupt .!! is it so?
lakshya 18:3662058a7c10 38 /// FCTN_BCN_FEN();
lakshya 18:3662058a7c10 39
lakshya 19:79e69017c855 40 //Init_BEACON_HW();
sakthipriya 0:7b4c00e3912f 41 BCN_INIT_STATUS = 0;
sakthipriya 0:7b4c00e3912f 42 }
lakshya 18:3662058a7c10 43 void FCTN_BCN_FEN(void const *args)
sakthipriya 0:7b4c00e3912f 44 {
lakshya 18:3662058a7c10 45 printf("\n\n\rFCTN_FEN\n");
sakthipriya 0:7b4c00e3912f 46 BCN_FEN = 1;//write this value to flash
sakthipriya 0:7b4c00e3912f 47 }
Bragadeesh153 12:af1d7e18b868 48 void FCTN_BCN_TX_MAIN()
sakthipriya 0:7b4c00e3912f 49 {
Bragadeesh153 12:af1d7e18b868 50 pc_bcn.printf("FCTN_BCN_TX_MAIN\n");
Bragadeesh153 12:af1d7e18b868 51 t_i.start();
Bragadeesh153 12:af1d7e18b868 52 int begin = t_i.read_us();
sakthipriya 0:7b4c00e3912f 53 BCN_TX_MAIN_STATUS = 1;
sakthipriya 0:7b4c00e3912f 54
sakthipriya 0:7b4c00e3912f 55 if(BCN_FEN == 1)
sakthipriya 0:7b4c00e3912f 56 {
sakthipriya 0:7b4c00e3912f 57 if(BCN_TX_EN == 1)
sakthipriya 0:7b4c00e3912f 58 {
sakthipriya 0:7b4c00e3912f 59 //Measure and store BCN temperature in BCN_TS_BUFFER
sakthipriya 0:7b4c00e3912f 60 BCN_TS_BUFFER = check_Temperature();
sakthipriya 0:7b4c00e3912f 61 pc_bcn.printf("\n\ntemperature = %d\n\n",BCN_TS_BUFFER);
sakthipriya 0:7b4c00e3912f 62 //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER
sakthipriya 0:7b4c00e3912f 63 if(BCN_STANDBY == 1 )
sakthipriya 0:7b4c00e3912f 64 {
sakthipriya 0:7b4c00e3912f 65 Set_BCN_TX_STATUS(BCN_TX_STANDBY);
sakthipriya 0:7b4c00e3912f 66 BCN_TX_MAIN_STATUS = 0;
sakthipriya 0:7b4c00e3912f 67
sakthipriya 0:7b4c00e3912f 68 // break;
sakthipriya 0:7b4c00e3912f 69 }
sakthipriya 0:7b4c00e3912f 70 else
sakthipriya 0:7b4c00e3912f 71 {
sakthipriya 0:7b4c00e3912f 72 //transmit short beacon and long beacon
lakshya 18:3662058a7c10 73 SHORT_BCN_TX();
sakthipriya 0:7b4c00e3912f 74 LONG_BCN_TX();
sakthipriya 0:7b4c00e3912f 75
sakthipriya 0:7b4c00e3912f 76 if(Check_ACK_RECEIVED() == 1)
sakthipriya 0:7b4c00e3912f 77 {
sakthipriya 0:7b4c00e3912f 78 Set_BCN_TX_STATUS(BCN_TX_SUCCESS);
sakthipriya 0:7b4c00e3912f 79 BCN_TX_MAIN_STATUS = 0;
sakthipriya 0:7b4c00e3912f 80 }
sakthipriya 0:7b4c00e3912f 81 else
sakthipriya 0:7b4c00e3912f 82 {
sakthipriya 0:7b4c00e3912f 83 Set_BCN_TX_STATUS(BCN_TX_FAILURE);
sakthipriya 0:7b4c00e3912f 84 BCN_TX_MAIN_STATUS = 0;
sakthipriya 0:7b4c00e3912f 85
sakthipriya 0:7b4c00e3912f 86 }
sakthipriya 0:7b4c00e3912f 87 }
sakthipriya 0:7b4c00e3912f 88 }
sakthipriya 0:7b4c00e3912f 89 else
sakthipriya 0:7b4c00e3912f 90 {
sakthipriya 0:7b4c00e3912f 91 Set_BCN_TX_STATUS(BCN_TX_DISABLED);
sakthipriya 0:7b4c00e3912f 92 BCN_TX_MAIN_STATUS = 0;
sakthipriya 0:7b4c00e3912f 93 }
sakthipriya 0:7b4c00e3912f 94 }
sakthipriya 0:7b4c00e3912f 95 else
sakthipriya 0:7b4c00e3912f 96 {
sakthipriya 0:7b4c00e3912f 97 Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on.
sakthipriya 0:7b4c00e3912f 98 BCN_TX_MAIN_STATUS = 0;
sakthipriya 0:7b4c00e3912f 99 }
Bragadeesh153 12:af1d7e18b868 100 t_i.stop();
Bragadeesh153 12:af1d7e18b868 101 int end = t_i.read_us();
Bragadeesh153 12:af1d7e18b868 102 pc_bcn.printf("The time required for FCTN_BCN_TX_MAIN is %d useconds\r\n", end-begin);
Bragadeesh153 12:af1d7e18b868 103
sakthipriya 0:7b4c00e3912f 104 }
sakthipriya 0:7b4c00e3912f 105
sakthipriya 0:7b4c00e3912f 106 void Set_BCN_TX_STATUS(uint8_t STATUS)
sakthipriya 0:7b4c00e3912f 107 {
sakthipriya 0:7b4c00e3912f 108 BCN_TX_STATUS = STATUS;
sakthipriya 0:7b4c00e3912f 109 }
sakthipriya 0:7b4c00e3912f 110
lakshya 19:79e69017c855 111 void LONG_BCN_DATA(uint8_t* l_bcn)//azad to send the modified code
lakshya 19:79e69017c855 112 {
lakshya 19:79e69017c855 113 /*check if this works.!! if so so then send it to long beacon tx*/
lakshya 19:79e69017c855 114 L_BCN=l_bcn;
lakshya 19:79e69017c855 115 //edit this item to keep an array maybe by creating a global array or some thing smarter
lakshya 19:79e69017c855 116 }
lakshya 19:79e69017c855 117
sakthipriya 0:7b4c00e3912f 118 uint8_t check_Temperature()
sakthipriya 0:7b4c00e3912f 119 {
sakthipriya 0:7b4c00e3912f 120 uint8_t temperature;
Bragadeesh153 12:af1d7e18b868 121 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x00);
sakthipriya 0:7b4c00e3912f 122 writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x20);
Bragadeesh153 12:af1d7e18b868 123 writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80);
Bragadeesh153 12:af1d7e18b868 124 wait(0.1);
sakthipriya 0:7b4c00e3912f 125 temperature = readreg(RF22_REG_11_ADC_Value);
sakthipriya 0:7b4c00e3912f 126 temperature = (float)temperature*0.5 - 64;
sakthipriya 0:7b4c00e3912f 127 return temperature;
sakthipriya 0:7b4c00e3912f 128 }
sakthipriya 0:7b4c00e3912f 129
sakthipriya 0:7b4c00e3912f 130 void SHORT_BCN_TX()
sakthipriya 0:7b4c00e3912f 131 {
sakthipriya 0:7b4c00e3912f 132 writereg(RF22_REG_6E_TX_DATA_RATE,0x01);
Bragadeesh153 12:af1d7e18b868 133 writereg(RF22_REG_6F_TX_DATA_RATE,0x50);//160bps
Bragadeesh153 12:af1d7e18b868 134 writereg(RF22_REG_3E_PACKET_LENGTH,SHORT_TX_DATA); //short packet length
Bragadeesh153 12:af1d7e18b868 135 wait(0.02);
lakshya 18:3662058a7c10 136
lakshya 18:3662058a7c10 137 printf("\n\rstage 1");
Bragadeesh153 12:af1d7e18b868 138
Bragadeesh153 12:af1d7e18b868 139 uint32_t timeout_count = 10e5;
sakthipriya 0:7b4c00e3912f 140 //extract values from short_beacon[]
Bragadeesh153 12:af1d7e18b868 141
sakthipriya 0:7b4c00e3912f 142 struct Short_beacon
sakthipriya 0:7b4c00e3912f 143 {
sakthipriya 0:7b4c00e3912f 144 uint8_t Voltage[1];
sakthipriya 0:7b4c00e3912f 145 uint8_t AngularSpeed[2];
sakthipriya 0:7b4c00e3912f 146 uint8_t SubsystemStatus[1];
sakthipriya 0:7b4c00e3912f 147 uint8_t Temp[3];
sakthipriya 0:7b4c00e3912f 148 uint8_t ErrorFlag[1];
lakshya 19:79e69017c855 149 /*
lakshya 19:79e69017c855 150 uint8_t callsign[7];
lakshya 19:79e69017c855 151 uint8_t bat_v_+_solar_ccurr;
lakshya 19:79e69017c855 152 uint8_t omega_+_bootcountet;
lakshya 19:79e69017c855 153 uint8_t bae_batt_temp;
lakshya 19:79e69017c855 154 uint8_t comm_rec_trans_vol;
lakshya 19:79e69017c855 155 uint8_t combi;//combination
lakshya 19:79e69017c855 156 uint8_t crc;
lakshya 19:79e69017c855 157 */
sakthipriya 0:7b4c00e3912f 158 }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} };
sakthipriya 0:7b4c00e3912f 159
lakshya 19:79e69017c855 160 /* acquiring data
lakshya 19:79e69017c855 161
lakshya 19:79e69017c855 162
lakshya 19:79e69017c855 163 */
lakshya 19:79e69017c855 164
lakshya 19:79e69017c855 165
sakthipriya 0:7b4c00e3912f 166 //filling hk data
sakthipriya 0:7b4c00e3912f 167 //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]};
sakthipriya 0:7b4c00e3912f 168 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]};
Bragadeesh153 12:af1d7e18b868 169
sakthipriya 0:7b4c00e3912f 170 clearTxBuf();
sakthipriya 0:7b4c00e3912f 171 //writing data first time
sakthipriya 0:7b4c00e3912f 172 int byte = 0;
sakthipriya 0:7b4c00e3912f 173 cs = 0;
sakthipriya 0:7b4c00e3912f 174 spi.write(0xFF);
Bragadeesh153 12:af1d7e18b868 175
sakthipriya 0:7b4c00e3912f 176 for (int byte_counter = 0; byte_counter <15 ; byte_counter++)
sakthipriya 0:7b4c00e3912f 177 {
sakthipriya 0:7b4c00e3912f 178 for(int j = 3; j >= 0 ; j--)
sakthipriya 0:7b4c00e3912f 179 {
sakthipriya 0:7b4c00e3912f 180 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,(j*2+1)))!= pow(2.0,(j*2+1)))
sakthipriya 0:7b4c00e3912f 181 {
sakthipriya 0:7b4c00e3912f 182 byte=0x00;
sakthipriya 0:7b4c00e3912f 183 }
sakthipriya 0:7b4c00e3912f 184 else
sakthipriya 0:7b4c00e3912f 185 {
sakthipriya 0:7b4c00e3912f 186 byte=0xF0;
sakthipriya 0:7b4c00e3912f 187 }
sakthipriya 0:7b4c00e3912f 188 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j*2))!= pow(2.0,j*2))
sakthipriya 0:7b4c00e3912f 189 {
sakthipriya 0:7b4c00e3912f 190 byte=byte | 0x00;
sakthipriya 0:7b4c00e3912f 191 }
sakthipriya 0:7b4c00e3912f 192 else
sakthipriya 0:7b4c00e3912f 193 {
sakthipriya 0:7b4c00e3912f 194 byte=byte | 0x0F;
sakthipriya 0:7b4c00e3912f 195 }
sakthipriya 0:7b4c00e3912f 196 spi.write(byte);
sakthipriya 0:7b4c00e3912f 197 }
sakthipriya 0:7b4c00e3912f 198 }
sakthipriya 0:7b4c00e3912f 199
sakthipriya 0:7b4c00e3912f 200 cs = 1;
Bragadeesh153 12:af1d7e18b868 201
sakthipriya 0:7b4c00e3912f 202 //Set to Tx mode
Bragadeesh153 12:af1d7e18b868 203 writereg(RF22_REG_07_OPERATING_MODE1,0x08);//*
Bragadeesh153 12:af1d7e18b868 204 wait(0.1);
sakthipriya 0:7b4c00e3912f 205 //Check for fifoThresh
Bragadeesh153 12:af1d7e18b868 206 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
Bragadeesh153 12:af1d7e18b868 207 timeout_count=10e5;
Bragadeesh153 12:af1d7e18b868 208
Bragadeesh153 12:af1d7e18b868 209 //Check for packet_sent
Bragadeesh153 12:af1d7e18b868 210 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;
Bragadeesh153 12:af1d7e18b868 211
lakshya 18:3662058a7c10 212 pc_bcn.printf("Short packet sent\r\n");
sakthipriya 0:7b4c00e3912f 213
sakthipriya 0:7b4c00e3912f 214 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
lakshya 18:3662058a7c10 215
sakthipriya 0:7b4c00e3912f 216 }
sakthipriya 0:7b4c00e3912f 217 void LONG_BCN_TX()
sakthipriya 0:7b4c00e3912f 218 {
Bragadeesh153 12:af1d7e18b868 219 writereg(RF22_REG_6E_TX_DATA_RATE,0x08);
Bragadeesh153 12:af1d7e18b868 220 writereg(RF22_REG_6F_TX_DATA_RATE,0x31);//1000 bps
sakthipriya 0:7b4c00e3912f 221 writereg(RF22_REG_3E_PACKET_LENGTH,LONG_TX_DATA); //long packet length
sakthipriya 0:7b4c00e3912f 222 wait(0.02);
Bragadeesh153 12:af1d7e18b868 223 uint32_t timeout_count=10e5;
sakthipriya 0:7b4c00e3912f 224
sakthipriya 0:7b4c00e3912f 225 //get long_beacon array
sakthipriya 0:7b4c00e3912f 226
Bragadeesh153 12:af1d7e18b868 227 uint8_t Long_beacon[125];
lakshya 19:79e69017c855 228 for(int i = 0;i<125;i++)
sakthipriya 0:7b4c00e3912f 229 {
lakshya 19:79e69017c855 230 Long_beacon[i] = 0xAA;
lakshya 19:79e69017c855 231 /*changed*/
lakshya 19:79e69017c855 232 //Long_beacon[i++]=L_BCN[i]; //should work if not then see the problem
sakthipriya 0:7b4c00e3912f 233 }
sakthipriya 0:7b4c00e3912f 234
sakthipriya 0:7b4c00e3912f 235
sakthipriya 0:7b4c00e3912f 236
sakthipriya 0:7b4c00e3912f 237
sakthipriya 0:7b4c00e3912f 238 //setModeIdle();
sakthipriya 0:7b4c00e3912f 239 clearTxBuf();
sakthipriya 0:7b4c00e3912f 240 //writing data first time
sakthipriya 0:7b4c00e3912f 241 cs = 0;
sakthipriya 0:7b4c00e3912f 242 spi.write(0xFF);
sakthipriya 0:7b4c00e3912f 243 for(int i=0; i<60;i++)
sakthipriya 0:7b4c00e3912f 244 {
sakthipriya 0:7b4c00e3912f 245 spi.write(Long_beacon[i]);
sakthipriya 0:7b4c00e3912f 246 }
sakthipriya 0:7b4c00e3912f 247 cs = 1;
sakthipriya 0:7b4c00e3912f 248
sakthipriya 0:7b4c00e3912f 249 //Set to Tx mode
Bragadeesh153 12:af1d7e18b868 250 writereg(RF22_REG_07_OPERATING_MODE1,0x08);//*
Bragadeesh153 12:af1d7e18b868 251 wait(0.1);
Bragadeesh153 12:af1d7e18b868 252
sakthipriya 0:7b4c00e3912f 253 //Check for fifoThresh
Bragadeesh153 12:af1d7e18b868 254 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
Bragadeesh153 12:af1d7e18b868 255 timeout_count=10e5;
sakthipriya 0:7b4c00e3912f 256
sakthipriya 0:7b4c00e3912f 257 cs = 0;
sakthipriya 0:7b4c00e3912f 258 spi.write(0xFF);
Bragadeesh153 12:af1d7e18b868 259 for(int i=60; i<125;i++)
sakthipriya 0:7b4c00e3912f 260 {
sakthipriya 0:7b4c00e3912f 261 spi.write(Long_beacon[i]);
sakthipriya 0:7b4c00e3912f 262 }
sakthipriya 0:7b4c00e3912f 263 cs = 1;
Bragadeesh153 12:af1d7e18b868 264 wait(0.1);
sakthipriya 0:7b4c00e3912f 265 //Check for fifoThresh
Bragadeesh153 12:af1d7e18b868 266 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;
Bragadeesh153 12:af1d7e18b868 267 timeout_count=10e5;
sakthipriya 0:7b4c00e3912f 268
sakthipriya 0:7b4c00e3912f 269 //Check for packetsent interrupt
Bragadeesh153 12:af1d7e18b868 270 while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;
sakthipriya 0:7b4c00e3912f 271
lakshya 19:79e69017c855 272 pc_bcn.printf("Long packet sent\r\n");
sakthipriya 0:7b4c00e3912f 273
sakthipriya 0:7b4c00e3912f 274 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
sakthipriya 0:7b4c00e3912f 275 }
Bragadeesh153 12:af1d7e18b868 276 void reset_rfm()
sakthipriya 0:7b4c00e3912f 277 {
Bragadeesh153 12:af1d7e18b868 278 FCTN_BCN_INIT();
sakthipriya 0:7b4c00e3912f 279 }
sakthipriya 0:7b4c00e3912f 280 void writereg(uint8_t reg,uint8_t val)
sakthipriya 0:7b4c00e3912f 281 {
sakthipriya 0:7b4c00e3912f 282 uint8_t count = 0;
sakthipriya 0:7b4c00e3912f 283 for(;;count++)
sakthipriya 0:7b4c00e3912f 284 {
sakthipriya 0:7b4c00e3912f 285 int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1;
sakthipriya 0:7b4c00e3912f 286 if(reg != 0x7 && reg != 0x58 && reg != 0xF)
sakthipriya 0:7b4c00e3912f 287 {
sakthipriya 0:7b4c00e3912f 288 read_val = readreg(reg);
sakthipriya 0:7b4c00e3912f 289 if (read_val == val)
sakthipriya 0:7b4c00e3912f 290 {
sakthipriya 0:7b4c00e3912f 291 break;
sakthipriya 0:7b4c00e3912f 292 }
sakthipriya 0:7b4c00e3912f 293 else if(count == 5)
sakthipriya 0:7b4c00e3912f 294 {
Bragadeesh153 12:af1d7e18b868 295 reset_rfm(), printf("reg = 0x%X\n",reg);break;
sakthipriya 0:7b4c00e3912f 296 }
sakthipriya 0:7b4c00e3912f 297 }
sakthipriya 0:7b4c00e3912f 298 else
sakthipriya 0:7b4c00e3912f 299 break;
sakthipriya 0:7b4c00e3912f 300 }
sakthipriya 0:7b4c00e3912f 301 }
sakthipriya 0:7b4c00e3912f 302 uint8_t readreg(uint8_t reg)
sakthipriya 0:7b4c00e3912f 303 {
sakthipriya 0:7b4c00e3912f 304 uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val;
sakthipriya 0:7b4c00e3912f 305 }
sakthipriya 0:7b4c00e3912f 306 void clearTxBuf()
sakthipriya 0:7b4c00e3912f 307 {
sakthipriya 0:7b4c00e3912f 308 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
sakthipriya 0:7b4c00e3912f 309 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
sakthipriya 0:7b4c00e3912f 310 }
Bragadeesh153 12:af1d7e18b868 311 uint8_t setFrequency(double centre)
sakthipriya 0:7b4c00e3912f 312 {
sakthipriya 0:7b4c00e3912f 313 uint8_t fbsel = 0x40;
sakthipriya 0:7b4c00e3912f 314 if (centre >= 480.0) {
sakthipriya 0:7b4c00e3912f 315 centre /= 2;
sakthipriya 0:7b4c00e3912f 316 fbsel |= 0x20;
Bragadeesh153 12:af1d7e18b868 317 }
sakthipriya 0:7b4c00e3912f 318 centre /= 10.0;
sakthipriya 0:7b4c00e3912f 319 double integerPart = floor(centre);
sakthipriya 0:7b4c00e3912f 320 double fractionalPart = centre - integerPart;
sakthipriya 0:7b4c00e3912f 321
sakthipriya 0:7b4c00e3912f 322 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
sakthipriya 0:7b4c00e3912f 323 fbsel |= fb;
sakthipriya 0:7b4c00e3912f 324 uint16_t fc = fractionalPart * 64000;
sakthipriya 0:7b4c00e3912f 325 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
sakthipriya 0:7b4c00e3912f 326 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
sakthipriya 0:7b4c00e3912f 327 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
sakthipriya 0:7b4c00e3912f 328 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
sakthipriya 0:7b4c00e3912f 329 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
sakthipriya 0:7b4c00e3912f 330 return 0;
sakthipriya 0:7b4c00e3912f 331 }
sakthipriya 0:7b4c00e3912f 332
sakthipriya 0:7b4c00e3912f 333
sakthipriya 0:7b4c00e3912f 334 void Init_BEACON_HW()
sakthipriya 0:7b4c00e3912f 335 {
lakshya 16:f9e484dc505e 336 wait(0.1f);
sakthipriya 0:7b4c00e3912f 337 cs=1; // chip must be deselected
lakshya 16:f9e484dc505e 338 wait(0.1f);
sakthipriya 0:7b4c00e3912f 339 spi.format(8,0);
sakthipriya 0:7b4c00e3912f 340 spi.frequency(10000000); //10MHz SCLK
sakthipriya 0:7b4c00e3912f 341
sakthipriya 0:7b4c00e3912f 342 //should either have a flag for invalid SPI or discard this for actual case or add reset
sakthipriya 0:7b4c00e3912f 343 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08)
sakthipriya 0:7b4c00e3912f 344 pc_bcn.printf("spi connection valid\r\n");
sakthipriya 0:7b4c00e3912f 345 else
sakthipriya 0:7b4c00e3912f 346 {pc_bcn.printf("error in spi connection\r\n");
lakshya 16:f9e484dc505e 347 pc_bcn.printf("readreg(RF22_REG_00_DEVICE_TYPE = %x\r\n",readreg(RF22_REG_00_DEVICE_TYPE));
Bragadeesh153 12:af1d7e18b868 348 reset_rfm();
sakthipriya 0:7b4c00e3912f 349 }
sakthipriya 0:7b4c00e3912f 350
sakthipriya 0:7b4c00e3912f 351 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
Bragadeesh153 12:af1d7e18b868 352 wait(0.1); //takes time to reset
sakthipriya 0:7b4c00e3912f 353
sakthipriya 0:7b4c00e3912f 354 clearTxBuf();
sakthipriya 0:7b4c00e3912f 355
sakthipriya 0:7b4c00e3912f 356 writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode
sakthipriya 0:7b4c00e3912f 357
sakthipriya 0:7b4c00e3912f 358 //txfifoalmostempty
sakthipriya 0:7b4c00e3912f 359 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30);
sakthipriya 0:7b4c00e3912f 360
sakthipriya 0:7b4c00e3912f 361 //Packet-engine registers
sakthipriya 0:7b4c00e3912f 362 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00);
sakthipriya 0:7b4c00e3912f 363
sakthipriya 0:7b4c00e3912f 364 writereg(RF22_REG_33_HEADER_CONTROL2,0x08);
sakthipriya 0:7b4c00e3912f 365 writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00);
sakthipriya 0:7b4c00e3912f 366
sakthipriya 0:7b4c00e3912f 367 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state
sakthipriya 0:7b4c00e3912f 368 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state
sakthipriya 0:7b4c00e3912f 369
Bragadeesh153 12:af1d7e18b868 370 setFrequency(435.0);
sakthipriya 0:7b4c00e3912f 371
sakthipriya 0:7b4c00e3912f 372 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
sakthipriya 0:7b4c00e3912f 373 {
Bragadeesh153 12:af1d7e18b868 374 pc_bcn.printf("frequency not set properly\r\n");
Bragadeesh153 12:af1d7e18b868 375 reset_rfm();
sakthipriya 0:7b4c00e3912f 376 }
sakthipriya 0:7b4c00e3912f 377
sakthipriya 0:7b4c00e3912f 378 //set Modem Configuration
Bragadeesh153 12:af1d7e18b868 379 //writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0xdf);
Bragadeesh153 12:af1d7e18b868 380 //writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03);
Bragadeesh153 12:af1d7e18b868 381 //writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x39);
Bragadeesh153 12:af1d7e18b868 382 //writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x20);
Bragadeesh153 12:af1d7e18b868 383 //writereg(RF22_REG_22_CLOCK_RECOVERY_OFFSET1,0x68); //updated 20 to 25 reg values from excel sheet for 1.2 Khz freq. deviation,fsk
Bragadeesh153 12:af1d7e18b868 384 //writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0xdc);
Bragadeesh153 12:af1d7e18b868 385 //writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00);
Bragadeesh153 12:af1d7e18b868 386 //writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x6B);
Bragadeesh153 12:af1d7e18b868 387 //writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2C);
Bragadeesh153 12:af1d7e18b868 388 //writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x11); //not required for fsk (OOK counter value)
Bragadeesh153 12:af1d7e18b868 389 //writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x2A); //??
sakthipriya 0:7b4c00e3912f 390 writereg(RF22_REG_58,0x80);
Bragadeesh153 12:af1d7e18b868 391 //writereg(RF22_REG_69_AGC_OVERRIDE1,0x60);
sakthipriya 0:7b4c00e3912f 392
sakthipriya 0:7b4c00e3912f 393 //Data rate set later
sakthipriya 0:7b4c00e3912f 394
sakthipriya 0:7b4c00e3912f 395 writereg(RF22_REG_70_MODULATION_CONTROL1,0x20);
sakthipriya 0:7b4c00e3912f 396 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21
sakthipriya 0:7b4c00e3912f 397
sakthipriya 0:7b4c00e3912f 398 //set tx power
sakthipriya 0:7b4c00e3912f 399 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
sakthipriya 0:7b4c00e3912f 400
sakthipriya 0:7b4c00e3912f 401 //TX_packet_length written later
sakthipriya 0:7b4c00e3912f 402 }
sakthipriya 0:7b4c00e3912f 403 bool Check_ACK_RECEIVED()
sakthipriya 0:7b4c00e3912f 404 {
sakthipriya 0:7b4c00e3912f 405 if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)
sakthipriya 0:7b4c00e3912f 406 {
sakthipriya 0:7b4c00e3912f 407 printf("Packet sent: ACK received\r\n");
sakthipriya 0:7b4c00e3912f 408 return 1;
sakthipriya 0:7b4c00e3912f 409 }
sakthipriya 0:7b4c00e3912f 410 else
sakthipriya 0:7b4c00e3912f 411 {
sakthipriya 0:7b4c00e3912f 412 pc_bcn.printf("Packet not sent\r\n");
sakthipriya 0:7b4c00e3912f 413 return 0;
sakthipriya 0:7b4c00e3912f 414 }
sakthipriya 0:7b4c00e3912f 415 }
lakshya 14:a9588f443f1a 416 /*int main()
lakshya 14:a9588f443f1a 417 {
lakshya 14:a9588f443f1a 418 FCTN_BCN_INIT();
lakshya 14:a9588f443f1a 419
lakshya 14:a9588f443f1a 420 loop.attach(&FCTN_BCN_TX_MAIN, 10.0);//in actual case its 30.0
lakshya 14:a9588f443f1a 421
lakshya 14:a9588f443f1a 422 while(1);
lakshya 14:a9588f443f1a 423
lakshya 14:a9588f443f1a 424 }*/