pradeep shekhar / Mbed 2 deprecated dec27_ook_short_long

Repo for ook demod

Dependencies:   mbed

main.cpp@0:c3e85e9c3fa8, 2015-11-01 (annotated)

Committer:
shekhar
Date:
Sun Nov 01 17:09:49 2015 +0000
Revision:
0:c3e85e9c3fa8
try this for bug fixing

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shekhar 0:c3e85e9c3fa8 1 #include "beacon.h"
shekhar 0:c3e85e9c3fa8 2 Serial pc(USBTX, USBRX); // tx, rx
shekhar 0:c3e85e9c3fa8 3 SPI spi(D11, D12, D13); // mosi, miso, sclk
shekhar 0:c3e85e9c3fa8 4 DigitalOut cs(D10); //slave select or chip select
shekhar 0:c3e85e9c3fa8 5
shekhar 0:c3e85e9c3fa8 6 void writereg(uint8_t reg,uint8_t val)
shekhar 0:c3e85e9c3fa8 7 {
shekhar 0:c3e85e9c3fa8 8 cs = 0;__disable_irq();spi.write(reg | 0x80);spi.write(val);__enable_irq();cs = 1;
shekhar 0:c3e85e9c3fa8 9 }
shekhar 0:c3e85e9c3fa8 10 uint8_t readreg(uint8_t reg)
shekhar 0:c3e85e9c3fa8 11 {
shekhar 0:c3e85e9c3fa8 12 int val;cs = 0;__disable_irq();spi.write(reg & ~0x80);val = spi.write(0);__enable_irq();cs = 1;return val;
shekhar 0:c3e85e9c3fa8 13 }
shekhar 0:c3e85e9c3fa8 14 void clearTxBuf()
shekhar 0:c3e85e9c3fa8 15 {
shekhar 0:c3e85e9c3fa8 16 writereg(RF22_REG_08_OPERATING_MODE2,0x01);
shekhar 0:c3e85e9c3fa8 17 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
shekhar 0:c3e85e9c3fa8 18 }
shekhar 0:c3e85e9c3fa8 19 void clearRxBuf()
shekhar 0:c3e85e9c3fa8 20 {
shekhar 0:c3e85e9c3fa8 21 writereg(RF22_REG_08_OPERATING_MODE2,0x02);
shekhar 0:c3e85e9c3fa8 22 writereg(RF22_REG_08_OPERATING_MODE2,0x00);
shekhar 0:c3e85e9c3fa8 23 }
shekhar 0:c3e85e9c3fa8 24 int setFrequency(float centre,float afcPullInRange)
shekhar 0:c3e85e9c3fa8 25 {
shekhar 0:c3e85e9c3fa8 26 //freq setting begins
shekhar 0:c3e85e9c3fa8 27 uint8_t fbsel = 0x40;
shekhar 0:c3e85e9c3fa8 28 uint8_t afclimiter;
shekhar 0:c3e85e9c3fa8 29 if (centre >= 480.0) {
shekhar 0:c3e85e9c3fa8 30 centre /= 2;
shekhar 0:c3e85e9c3fa8 31 fbsel |= 0x20;
shekhar 0:c3e85e9c3fa8 32 afclimiter = afcPullInRange * 1000000.0 / 1250.0;
shekhar 0:c3e85e9c3fa8 33 } else {
shekhar 0:c3e85e9c3fa8 34 if (afcPullInRange < 0.0 || afcPullInRange > 0.159375)
shekhar 0:c3e85e9c3fa8 35 return false;
shekhar 0:c3e85e9c3fa8 36 afclimiter = afcPullInRange * 1000000.0 / 625.0;
shekhar 0:c3e85e9c3fa8 37 }
shekhar 0:c3e85e9c3fa8 38 centre /= 10.0;
shekhar 0:c3e85e9c3fa8 39 float integerPart = floor(centre);
shekhar 0:c3e85e9c3fa8 40 float fractionalPart = centre - integerPart;
shekhar 0:c3e85e9c3fa8 41
shekhar 0:c3e85e9c3fa8 42 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
shekhar 0:c3e85e9c3fa8 43 fbsel |= fb;
shekhar 0:c3e85e9c3fa8 44 uint16_t fc = fractionalPart * 64000;
shekhar 0:c3e85e9c3fa8 45 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
shekhar 0:c3e85e9c3fa8 46 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0);
shekhar 0:c3e85e9c3fa8 47 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
shekhar 0:c3e85e9c3fa8 48 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
shekhar 0:c3e85e9c3fa8 49 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
shekhar 0:c3e85e9c3fa8 50 writereg(RF22_REG_2A_AFC_LIMITER, afclimiter);
shekhar 0:c3e85e9c3fa8 51 return 0;
shekhar 0:c3e85e9c3fa8 52 }
shekhar 0:c3e85e9c3fa8 53
shekhar 0:c3e85e9c3fa8 54 void init_short()
shekhar 0:c3e85e9c3fa8 55 {
shekhar 0:c3e85e9c3fa8 56 //reset()
shekhar 0:c3e85e9c3fa8 57 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset
shekhar 0:c3e85e9c3fa8 58 wait(1); //takes time to reset
shekhar 0:c3e85e9c3fa8 59
shekhar 0:c3e85e9c3fa8 60 clearTxBuf();
shekhar 0:c3e85e9c3fa8 61 clearRxBuf();
shekhar 0:c3e85e9c3fa8 62 //txfifoalmostempty
shekhar 0:c3e85e9c3fa8 63 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,10);
shekhar 0:c3e85e9c3fa8 64 //rxfifoalmostfull
shekhar 0:c3e85e9c3fa8 65 writereg(RF22_REG_7E_RX_FIFO_CONTROL,20);
shekhar 0:c3e85e9c3fa8 66 //Packet-engine registers
shekhar 0:c3e85e9c3fa8 67 writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x8E); //RF22_REG_30_DATA_ACCESS_CONTROL, RF22_ENPACRX | RF22_ENPACTX | RF22_ENCRC | RF22_CRC_CRC_16_IBM
shekhar 0:c3e85e9c3fa8 68 //&0x77 = diasable packet rx-tx handling
shekhar 0:c3e85e9c3fa8 69 writereg(RF22_REG_32_HEADER_CONTROL1,0x88); //RF22_REG_32_HEADER_CONTROL1, RF22_BCEN_HEADER3 | RF22_HDCH_HEADER3
shekhar 0:c3e85e9c3fa8 70 writereg(RF22_REG_33_HEADER_CONTROL2,0x42); //RF22_REG_33_HEADER_CONTROL2, RF22_HDLEN_4 | RF22_SYNCLEN_2
shekhar 0:c3e85e9c3fa8 71 writereg(RF22_REG_34_PREAMBLE_LENGTH,8); //RF22_REG_34_PREAMBLE_LENGTH, nibbles); preamble length = 8;
shekhar 0:c3e85e9c3fa8 72 writereg(RF22_REG_36_SYNC_WORD3,0x2D); //syncword3=2D
shekhar 0:c3e85e9c3fa8 73 writereg(RF22_REG_37_SYNC_WORD2,0xD4); //syncword2=D4
shekhar 0:c3e85e9c3fa8 74 writereg(RF22_REG_3F_CHECK_HEADER3,0); //RF22_REG_3F_CHECK_HEADER3, RF22_DEFAULT_NODE_ADDRESS
shekhar 0:c3e85e9c3fa8 75 writereg(RF22_REG_3A_TRANSMIT_HEADER3,0xab); //header_to
shekhar 0:c3e85e9c3fa8 76 writereg(RF22_REG_3B_TRANSMIT_HEADER2,0xbc); //header_from
shekhar 0:c3e85e9c3fa8 77 writereg(RF22_REG_3C_TRANSMIT_HEADER1,0xcd); //header_ids
shekhar 0:c3e85e9c3fa8 78 writereg(RF22_REG_3D_TRANSMIT_HEADER0,0xde); //header_flags
shekhar 0:c3e85e9c3fa8 79 writereg(RF22_REG_3F_CHECK_HEADER3,0xab);
shekhar 0:c3e85e9c3fa8 80 writereg(RF22_REG_40_CHECK_HEADER2,0xbc);
shekhar 0:c3e85e9c3fa8 81 writereg(RF22_REG_41_CHECK_HEADER1,0xcd);
shekhar 0:c3e85e9c3fa8 82 writereg(RF22_REG_42_CHECK_HEADER0,0xde);
shekhar 0:c3e85e9c3fa8 83
shekhar 0:c3e85e9c3fa8 84 //RSSI threshold for clear channel indicator
shekhar 0:c3e85e9c3fa8 85 writereg(RF22_REG_27_RSSI_THRESHOLD,0xA5); //55 for -80dBm, 2D for -100dBm, 7D for -60dBm, A5 for -40dBm, CD for -20 dBm
shekhar 0:c3e85e9c3fa8 86
shekhar 0:c3e85e9c3fa8 87 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state ??
shekhar 0:c3e85e9c3fa8 88 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state ??
shekhar 0:c3e85e9c3fa8 89
shekhar 0:c3e85e9c3fa8 90 //interrupts
shekhar 0:c3e85e9c3fa8 91 // spiWrite(RF22_REG_05_INTERRUPT_ENABLE1, RF22_ENTXFFAEM |RF22_ENRXFFAFULL | RF22_ENPKSENT |RF22_ENPKVALID| RF22_ENCRCERROR);
shekhar 0:c3e85e9c3fa8 92 // spiWrite(RF22_REG_06_INTERRUPT_ENABLE2, RF22_ENPREAVAL);
shekhar 0:c3e85e9c3fa8 93
shekhar 0:c3e85e9c3fa8 94 setFrequency(435.0, 0.05);
shekhar 0:c3e85e9c3fa8 95
shekhar 0:c3e85e9c3fa8 96 //return !(statusRead() & RF22_FREQERR);
shekhar 0:c3e85e9c3fa8 97 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00)
shekhar 0:c3e85e9c3fa8 98 pc.printf("frequency not set properly\n");
shekhar 0:c3e85e9c3fa8 99 //frequency set
shekhar 0:c3e85e9c3fa8 100
shekhar 0:c3e85e9c3fa8 101 //setModemConfig(FSK_Rb2_4Fd36); FSK_Rb2_4Fd36, ///< FSK, No Manchester, Rb = 2.4kbs, Fd = 36kHz
shekhar 0:c3e85e9c3fa8 102 //setmodemregisters
shekhar 0:c3e85e9c3fa8 103 //0x1b, 0x03, 0x41, 0x60, 0x27, 0x52, 0x00, 0x07, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x22, 0x3a = FSK_RB2_4FD36
shekhar 0:c3e85e9c3fa8 104 //0xc8, 0x03, 0x39, 0x20, 0x68, 0xdc, 0x00, 0x6b, 0x2a, 0x08, 0x2a, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x21, 0x08 = OOK,2.4, 335
shekhar 0:c3e85e9c3fa8 105 writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0xdf);
shekhar 0:c3e85e9c3fa8 106 writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03);
shekhar 0:c3e85e9c3fa8 107 writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x39);
shekhar 0:c3e85e9c3fa8 108 writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x20);
shekhar 0:c3e85e9c3fa8 109 writereg(RF22_REG_22_CLOCK_RECOVERY_OFFSET1,0x68); //updated 20 to 25 reg values from excel sheet for 1.2 Khz freq. deviation,fsk
shekhar 0:c3e85e9c3fa8 110 writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0xdc);
shekhar 0:c3e85e9c3fa8 111 writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00);
shekhar 0:c3e85e9c3fa8 112 writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x6B);
shekhar 0:c3e85e9c3fa8 113 writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2C);
shekhar 0:c3e85e9c3fa8 114 writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x11); //not required for fsk (OOK counter value)
shekhar 0:c3e85e9c3fa8 115 writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x2A); //??
shekhar 0:c3e85e9c3fa8 116 writereg(RF22_REG_58,0x80);
shekhar 0:c3e85e9c3fa8 117 writereg(RF22_REG_69_AGC_OVERRIDE1,0x60);
shekhar 0:c3e85e9c3fa8 118 writereg(RF22_REG_6E_TX_DATA_RATE1,0x09);
shekhar 0:c3e85e9c3fa8 119 writereg(RF22_REG_6F_TX_DATA_RATE0,0xd5);
shekhar 0:c3e85e9c3fa8 120 writereg(RF22_REG_70_MODULATION_CONTROL1,0x2c);
shekhar 0:c3e85e9c3fa8 121 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21 //fsk = 0x22
shekhar 0:c3e85e9c3fa8 122 writereg(RF22_REG_72_FREQUENCY_DEVIATION,0x50);
shekhar 0:c3e85e9c3fa8 123 //set tx power
shekhar 0:c3e85e9c3fa8 124 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm
shekhar 0:c3e85e9c3fa8 125 writereg(RF22_REG_3E_PACKET_LENGTH,TX_DATA_SHORT); //packet length
shekhar 0:c3e85e9c3fa8 126 }
shekhar 0:c3e85e9c3fa8 127 void init_long()
shekhar 0:c3e85e9c3fa8 128 {
shekhar 0:c3e85e9c3fa8 129 //modem config
shekhar 0:c3e85e9c3fa8 130 writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0xDF);
shekhar 0:c3e85e9c3fa8 131 writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03);
shekhar 0:c3e85e9c3fa8 132 writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x71);
shekhar 0:c3e85e9c3fa8 133 writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x40);
shekhar 0:c3e85e9c3fa8 134 writereg(RF22_REG_22_CLOCK_RECOVERY_OFFSET1,0x34); //updated 20 to 25 reg values from excel sheet for 1.2 Khz freq. deviation,fsk
shekhar 0:c3e85e9c3fa8 135 writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0x6E);
shekhar 0:c3e85e9c3fa8 136 writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00);
shekhar 0:c3e85e9c3fa8 137 writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x36);
shekhar 0:c3e85e9c3fa8 138 writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x30);
shekhar 0:c3e85e9c3fa8 139 writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x23); //not required for fsk (OOK counter value)
shekhar 0:c3e85e9c3fa8 140 writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x2B); //??
shekhar 0:c3e85e9c3fa8 141 writereg(RF22_REG_58,0x80);
shekhar 0:c3e85e9c3fa8 142 writereg(RF22_REG_69_AGC_OVERRIDE1,0x60);
shekhar 0:c3e85e9c3fa8 143 writereg(RF22_REG_6E_TX_DATA_RATE1,0x04);
shekhar 0:c3e85e9c3fa8 144 writereg(RF22_REG_6F_TX_DATA_RATE0,0xEA);
shekhar 0:c3e85e9c3fa8 145 writereg(RF22_REG_70_MODULATION_CONTROL1,0x2c);
shekhar 0:c3e85e9c3fa8 146 writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21 //fsk = 0x22
shekhar 0:c3e85e9c3fa8 147 writereg(RF22_REG_72_FREQUENCY_DEVIATION,0x02);
shekhar 0:c3e85e9c3fa8 148 writereg(RF22_REG_3E_PACKET_LENGTH,TX_DATA_LONG); //packet length
shekhar 0:c3e85e9c3fa8 149 }
shekhar 0:c3e85e9c3fa8 150 int main()
shekhar 0:c3e85e9c3fa8 151 {
shekhar 0:c3e85e9c3fa8 152 wait(1); // wait for POR to complete //change the timing later
shekhar 0:c3e85e9c3fa8 153 cs=1; // chip must be deselected
shekhar 0:c3e85e9c3fa8 154 wait(1); //change the time later
shekhar 0:c3e85e9c3fa8 155 spi.format(8,0);
shekhar 0:c3e85e9c3fa8 156 spi.frequency(10000000); //10MHz SCLK
shekhar 0:c3e85e9c3fa8 157 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08) pc.printf("spi connection valid\n");
shekhar 0:c3e85e9c3fa8 158 else pc.printf("error in spi connection\n");
shekhar 0:c3e85e9c3fa8 159
shekhar 0:c3e85e9c3fa8 160 init_short();
shekhar 0:c3e85e9c3fa8 161
shekhar 0:c3e85e9c3fa8 162
shekhar 0:c3e85e9c3fa8 163 //init complete
shekhar 0:c3e85e9c3fa8 164 pc.printf("init complete.....\n");
shekhar 0:c3e85e9c3fa8 165 while(1)
shekhar 0:c3e85e9c3fa8 166 {
shekhar 0:c3e85e9c3fa8 167 pc.printf("press t to send or r to receive....\n");
shekhar 0:c3e85e9c3fa8 168 if(pc.getc()=='t')
shekhar 0:c3e85e9c3fa8 169 {
shekhar 0:c3e85e9c3fa8 170 wait(0.02); // pl. update this value or even avoid it!!!
shekhar 0:c3e85e9c3fa8 171 //extract values from short_beacon[]
shekhar 0:c3e85e9c3fa8 172 uint8_t byte_counter = 0;
shekhar 0:c3e85e9c3fa8 173 struct Short_beacon{
shekhar 0:c3e85e9c3fa8 174 uint8_t Voltage[1];
shekhar 0:c3e85e9c3fa8 175 uint8_t AngularSpeed[2];
shekhar 0:c3e85e9c3fa8 176 uint8_t SubsystemStatus[1];
shekhar 0:c3e85e9c3fa8 177 uint8_t Temp[3];
shekhar 0:c3e85e9c3fa8 178 uint8_t ErrorFlag[1];
shekhar 0:c3e85e9c3fa8 179 }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} };
shekhar 0:c3e85e9c3fa8 180
shekhar 0:c3e85e9c3fa8 181 //filling hk data
shekhar 0:c3e85e9c3fa8 182 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 0:c3e85e9c3fa8 183 //tx settings begin
shekhar 0:c3e85e9c3fa8 184 //setModeIdle();
shekhar 0:c3e85e9c3fa8 185 writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode
shekhar 0:c3e85e9c3fa8 186 //fillTxBuf(data, len);
shekhar 0:c3e85e9c3fa8 187 clearTxBuf();
shekhar 0:c3e85e9c3fa8 188
shekhar 0:c3e85e9c3fa8 189 //Set to Tx mode
shekhar 0:c3e85e9c3fa8 190 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 0:c3e85e9c3fa8 191
shekhar 0:c3e85e9c3fa8 192 while(byte_counter!=15){
shekhar 0:c3e85e9c3fa8 193 //Check for fifoThresh
shekhar 0:c3e85e9c3fa8 194 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:c3e85e9c3fa8 195 //writing again
shekhar 0:c3e85e9c3fa8 196 cs = 0;
shekhar 0:c3e85e9c3fa8 197 spi.write(0xFF);
shekhar 0:c3e85e9c3fa8 198 for(int i=7; i>=0 ;i--)
shekhar 0:c3e85e9c3fa8 199 {
shekhar 0:c3e85e9c3fa8 200 //pc.printf("%d\n",byte_counter);
shekhar 0:c3e85e9c3fa8 201 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,i))!=0)
shekhar 0:c3e85e9c3fa8 202 //if((short_beacon[byte_counter] & mask[i]) != 0)
shekhar 0:c3e85e9c3fa8 203 {
shekhar 0:c3e85e9c3fa8 204 spi.write(0xFF);
shekhar 0:c3e85e9c3fa8 205 spi.write(0xFF);
shekhar 0:c3e85e9c3fa8 206 }
shekhar 0:c3e85e9c3fa8 207 else
shekhar 0:c3e85e9c3fa8 208 {
shekhar 0:c3e85e9c3fa8 209 spi.write(0x00);
shekhar 0:c3e85e9c3fa8 210 spi.write(0x00);
shekhar 0:c3e85e9c3fa8 211
shekhar 0:c3e85e9c3fa8 212 }
shekhar 0:c3e85e9c3fa8 213 }
shekhar 0:c3e85e9c3fa8 214 cs = 1;
shekhar 0:c3e85e9c3fa8 215 byte_counter++;
shekhar 0:c3e85e9c3fa8 216
shekhar 0:c3e85e9c3fa8 217 }
shekhar 0:c3e85e9c3fa8 218 //rf22.waitPacketSent();
shekhar 0:c3e85e9c3fa8 219 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04)pc.printf(" chck short pkt sent!\n");
shekhar 0:c3e85e9c3fa8 220 pc.printf("short packet sent...\n");
shekhar 0:c3e85e9c3fa8 221
shekhar 0:c3e85e9c3fa8 222 wait(0.1);
shekhar 0:c3e85e9c3fa8 223 //long tx starts
shekhar 0:c3e85e9c3fa8 224 int i = 0; //for loops
shekhar 0:c3e85e9c3fa8 225 int u = 0; //universal count for hk array
shekhar 0:c3e85e9c3fa8 226 int bar = 0;
shekhar 0:c3e85e9c3fa8 227 init_long();
shekhar 0:c3e85e9c3fa8 228 uint8_t long_beacon_data[TX_DATA_LONG];
shekhar 0:c3e85e9c3fa8 229 for(int i=0;i<TX_DATA_LONG;i++)
shekhar 0:c3e85e9c3fa8 230 long_beacon_data[i]=i;
shekhar 0:c3e85e9c3fa8 231 clearTxBuf();
shekhar 0:c3e85e9c3fa8 232 clearRxBuf();
shekhar 0:c3e85e9c3fa8 233 /* //Filling Data into FIFO for the first time
shekhar 0:c3e85e9c3fa8 234 cs = 0;
shekhar 0:c3e85e9c3fa8 235 spi.write(0xFF); //fifo write access
shekhar 0:c3e85e9c3fa8 236 for(i=0; i< 20; i++)
shekhar 0:c3e85e9c3fa8 237 {
shekhar 0:c3e85e9c3fa8 238 spi.write(long_beacon_data[i]);
shekhar 0:c3e85e9c3fa8 239 //pc.printf("0x%X \n",long_beacon_data[u+i]);
shekhar 0:c3e85e9c3fa8 240 }
shekhar 0:c3e85e9c3fa8 241 u=i;
shekhar 0:c3e85e9c3fa8 242 cs = 1; */
shekhar 0:c3e85e9c3fa8 243 //Set to Tx mode
shekhar 0:c3e85e9c3fa8 244 writereg(RF22_REG_07_OPERATING_MODE1,0x09);
shekhar 0:c3e85e9c3fa8 245
shekhar 0:c3e85e9c3fa8 246 //Check for fifoempty Thresh
shekhar 0:c3e85e9c3fa8 247 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:c3e85e9c3fa8 248
shekhar 0:c3e85e9c3fa8 249 while(u!=TX_DATA_LONG) {
shekhar 0:c3e85e9c3fa8 250 if((TX_DATA_LONG - u) >= TIMES)
shekhar 0:c3e85e9c3fa8 251 bar = TIMES;
shekhar 0:c3e85e9c3fa8 252 else
shekhar 0:c3e85e9c3fa8 253 bar = (TX_DATA_LONG - u);
shekhar 0:c3e85e9c3fa8 254
shekhar 0:c3e85e9c3fa8 255 //writing again
shekhar 0:c3e85e9c3fa8 256 cs = 0;
shekhar 0:c3e85e9c3fa8 257 spi.write(0xFF); //FIFO write access
shekhar 0:c3e85e9c3fa8 258 for(i=0; i<bar; i++){
shekhar 0:c3e85e9c3fa8 259 spi.write(long_beacon_data[u + i]);
shekhar 0:c3e85e9c3fa8 260 //pc.printf("0x%X \n",long_beacon_data[u+i]);
shekhar 0:c3e85e9c3fa8 261 }
shekhar 0:c3e85e9c3fa8 262 printf("u=%d\n",u);
shekhar 0:c3e85e9c3fa8 263 u = u + i;
shekhar 0:c3e85e9c3fa8 264 cs = 1;
shekhar 0:c3e85e9c3fa8 265 //Check for fifoThresh
shekhar 0:c3e85e9c3fa8 266 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20);
shekhar 0:c3e85e9c3fa8 267 }
shekhar 0:c3e85e9c3fa8 268 //rf22.waitPacketSent();
shekhar 0:c3e85e9c3fa8 269 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04)pc.printf(" chck long pkt sent!\n");
shekhar 0:c3e85e9c3fa8 270 pc.printf("long packet sent ");
shekhar 0:c3e85e9c3fa8 271
shekhar 0:c3e85e9c3fa8 272 }
shekhar 0:c3e85e9c3fa8 273 else if(pc.getc()=='r')
shekhar 0:c3e85e9c3fa8 274 {
shekhar 0:c3e85e9c3fa8 275 uint8_t short_rx_data[RX_DATA_SHORT]; // for filling the received short data
shekhar 0:c3e85e9c3fa8 276 uint8_t long_rx_data[RX_DATA_LONG]; // for filling the received long data
shekhar 0:c3e85e9c3fa8 277 int u=0,i=0;
shekhar 0:c3e85e9c3fa8 278 int bar = TIMES;
shekhar 0:c3e85e9c3fa8 279 //rf22.waitAvailable();
shekhar 0:c3e85e9c3fa8 280 clearTxBuf();
shekhar 0:c3e85e9c3fa8 281 clearRxBuf();
shekhar 0:c3e85e9c3fa8 282 //setModeRx();
shekhar 0:c3e85e9c3fa8 283 writereg(RF22_REG_07_OPERATING_MODE1,0x04);//rxon
shekhar 0:c3e85e9c3fa8 284 while((readreg(RF22_REG_04_INTERRUPT_STATUS2)& 0x10) != 0x10)
shekhar 0:c3e85e9c3fa8 285 pc.printf("rssi?\n");
shekhar 0:c3e85e9c3fa8 286 //preamble??
shekhar 0:c3e85e9c3fa8 287 while(!(readreg(0x04)&0x40))
shekhar 0:c3e85e9c3fa8 288 pc.printf("detecting preamble\n");
shekhar 0:c3e85e9c3fa8 289 //checking syncword
shekhar 0:c3e85e9c3fa8 290 while(!(readreg(RF22_REG_04_INTERRUPT_STATUS2)& 0x80))
shekhar 0:c3e85e9c3fa8 291 pc.printf("sync?\n");
shekhar 0:c3e85e9c3fa8 292 //check for fifothreshold
shekhar 0:c3e85e9c3fa8 293 while(u != RX_DATA_SHORT)//fifo_thresh
shekhar 0:c3e85e9c3fa8 294 {
shekhar 0:c3e85e9c3fa8 295 pc.printf("1 \n");
shekhar 0:c3e85e9c3fa8 296 if((RX_DATA_SHORT - u) > TIMES)
shekhar 0:c3e85e9c3fa8 297 {
shekhar 0:c3e85e9c3fa8 298 //check for fifo_thresh
shekhar 0:c3e85e9c3fa8 299 while((readreg(RF22_REG_03_INTERRUPT_STATUS1)& 0x10) != 0x10)
shekhar 0:c3e85e9c3fa8 300 pc.printf("fifo2?\n");
shekhar 0:c3e85e9c3fa8 301 bar = TIMES;
shekhar 0:c3e85e9c3fa8 302 //reading
shekhar 0:c3e85e9c3fa8 303 cs = 0;
shekhar 0:c3e85e9c3fa8 304 spi.write(0x7F);
shekhar 0:c3e85e9c3fa8 305 for(i=0; i<bar;i++){
shekhar 0:c3e85e9c3fa8 306 short_rx_data[u+i] = spi.write(0);
shekhar 0:c3e85e9c3fa8 307 //pc.printf("0x%X \n",short_rx_data[u+i]);
shekhar 0:c3e85e9c3fa8 308 }
shekhar 0:c3e85e9c3fa8 309 u=u+i;
shekhar 0:c3e85e9c3fa8 310 pc.printf("u= %d \n",u);
shekhar 0:c3e85e9c3fa8 311 cs = 1;
shekhar 0:c3e85e9c3fa8 312 }
shekhar 0:c3e85e9c3fa8 313 else
shekhar 0:c3e85e9c3fa8 314 {
shekhar 0:c3e85e9c3fa8 315 pc.printf("2\n");
shekhar 0:c3e85e9c3fa8 316 wait(0.2);
shekhar 0:c3e85e9c3fa8 317 bar = RX_DATA_SHORT- u;
shekhar 0:c3e85e9c3fa8 318 //reading
shekhar 0:c3e85e9c3fa8 319 cs = 0;
shekhar 0:c3e85e9c3fa8 320 spi.write(0x7F);
shekhar 0:c3e85e9c3fa8 321 for(i=0; i<bar;i++){
shekhar 0:c3e85e9c3fa8 322 short_rx_data[u+i] = spi.write(0);
shekhar 0:c3e85e9c3fa8 323 //pc.printf("0x%X \n",short_rx_data[u+i]);
shekhar 0:c3e85e9c3fa8 324 }
shekhar 0:c3e85e9c3fa8 325 u=u+i;
shekhar 0:c3e85e9c3fa8 326 cs = 1;
shekhar 0:c3e85e9c3fa8 327 pc.printf("u= %d \n",u);
shekhar 0:c3e85e9c3fa8 328 }
shekhar 0:c3e85e9c3fa8 329 }
shekhar 0:c3e85e9c3fa8 330 //packet valid??
shekhar 0:c3e85e9c3fa8 331 while(!(readreg(RF22_REG_03_INTERRUPT_STATUS1)& 0x02))
shekhar 0:c3e85e9c3fa8 332 pc.printf("checking if short beacon packet is valid\n");
shekhar 0:c3e85e9c3fa8 333 pc.printf("short packet valid\n");
shekhar 0:c3e85e9c3fa8 334
shekhar 0:c3e85e9c3fa8 335 init_long();
shekhar 0:c3e85e9c3fa8 336 u=0; i=0;
shekhar 0:c3e85e9c3fa8 337 bar = TIMES;
shekhar 0:c3e85e9c3fa8 338 clearTxBuf();
shekhar 0:c3e85e9c3fa8 339 clearRxBuf();
shekhar 0:c3e85e9c3fa8 340 //setModeRx();
shekhar 0:c3e85e9c3fa8 341 writereg(RF22_REG_07_OPERATING_MODE1,0x04); //rxon
shekhar 0:c3e85e9c3fa8 342 while((readreg(RF22_REG_04_INTERRUPT_STATUS2)& 0x10) != 0x10)
shekhar 0:c3e85e9c3fa8 343 pc.printf("rssi?\n");
shekhar 0:c3e85e9c3fa8 344 //preamble??
shekhar 0:c3e85e9c3fa8 345 while(!(readreg(0x04)&0x40))
shekhar 0:c3e85e9c3fa8 346 pc.printf("detecting preamble\n");
shekhar 0:c3e85e9c3fa8 347 //checking syncword
shekhar 0:c3e85e9c3fa8 348 while(!(readreg(RF22_REG_04_INTERRUPT_STATUS2)& 0x80))
shekhar 0:c3e85e9c3fa8 349 pc.printf("sync?\n");
shekhar 0:c3e85e9c3fa8 350
shekhar 0:c3e85e9c3fa8 351 while(u != RX_DATA_LONG)//fifo_thresh
shekhar 0:c3e85e9c3fa8 352 {
shekhar 0:c3e85e9c3fa8 353 pc.printf("1 \n");
shekhar 0:c3e85e9c3fa8 354 if((RX_DATA_LONG - u) > TIMES)
shekhar 0:c3e85e9c3fa8 355 {
shekhar 0:c3e85e9c3fa8 356 //check for fifo_thresh
shekhar 0:c3e85e9c3fa8 357 while((readreg(RF22_REG_03_INTERRUPT_STATUS1)& 0x10) != 0x10)
shekhar 0:c3e85e9c3fa8 358 pc.printf("fifo2?\n");
shekhar 0:c3e85e9c3fa8 359 bar = TIMES;
shekhar 0:c3e85e9c3fa8 360 //reading
shekhar 0:c3e85e9c3fa8 361 cs = 0;
shekhar 0:c3e85e9c3fa8 362 spi.write(0x7F);
shekhar 0:c3e85e9c3fa8 363 for(i=0; i<bar;i++){
shekhar 0:c3e85e9c3fa8 364 long_rx_data[u+i] = spi.write(0);
shekhar 0:c3e85e9c3fa8 365 //pc.printf("0x%X \n",long_rx_data[u+i]);
shekhar 0:c3e85e9c3fa8 366 }
shekhar 0:c3e85e9c3fa8 367 u=u+i;
shekhar 0:c3e85e9c3fa8 368 pc.printf("u= %d \n",u);
shekhar 0:c3e85e9c3fa8 369 cs = 1;
shekhar 0:c3e85e9c3fa8 370 }
shekhar 0:c3e85e9c3fa8 371 else
shekhar 0:c3e85e9c3fa8 372 {
shekhar 0:c3e85e9c3fa8 373 pc.printf("2\n");
shekhar 0:c3e85e9c3fa8 374 wait(0.2);
shekhar 0:c3e85e9c3fa8 375 bar = RX_DATA_LONG- u;
shekhar 0:c3e85e9c3fa8 376 //reading
shekhar 0:c3e85e9c3fa8 377 cs = 0;
shekhar 0:c3e85e9c3fa8 378 spi.write(0x7F);
shekhar 0:c3e85e9c3fa8 379 for(i=0; i<bar;i++){
shekhar 0:c3e85e9c3fa8 380 long_rx_data[u+i] = spi.write(0);
shekhar 0:c3e85e9c3fa8 381 //pc.printf("0x%X \n",long_rx_data[u+i]);
shekhar 0:c3e85e9c3fa8 382 }
shekhar 0:c3e85e9c3fa8 383 u=u+i;
shekhar 0:c3e85e9c3fa8 384 cs = 1;
shekhar 0:c3e85e9c3fa8 385 pc.printf("u= %d \n",u);
shekhar 0:c3e85e9c3fa8 386 }
shekhar 0:c3e85e9c3fa8 387 }
shekhar 0:c3e85e9c3fa8 388 //packet valid??
shekhar 0:c3e85e9c3fa8 389 while(!(readreg(RF22_REG_03_INTERRUPT_STATUS1)& 0x02))
shekhar 0:c3e85e9c3fa8 390 pc.printf("checking if long beacon packet is valid\n");
shekhar 0:c3e85e9c3fa8 391 pc.printf("long packet valid\n");
shekhar 0:c3e85e9c3fa8 392
shekhar 0:c3e85e9c3fa8 393 bool shortbeacon[120];
shekhar 0:c3e85e9c3fa8 394 for(int i = 0; i<120; i++)
shekhar 0:c3e85e9c3fa8 395 short_rx_data[2*i] == 0xFF ? shortbeacon[i] = 1 :shortbeacon[i] = 0;
shekhar 0:c3e85e9c3fa8 396
shekhar 0:c3e85e9c3fa8 397 //converting bool to uint_8
shekhar 0:c3e85e9c3fa8 398 uint8_t s_beacon[15];
shekhar 0:c3e85e9c3fa8 399 for(int i = 0, m =0 ; i < 15 ; i++ )
shekhar 0:c3e85e9c3fa8 400 for(int n = 0; n < 8; n++,m++)
shekhar 0:c3e85e9c3fa8 401 {
shekhar 0:c3e85e9c3fa8 402 if(shortbeacon[m])
shekhar 0:c3e85e9c3fa8 403 {
shekhar 0:c3e85e9c3fa8 404 s_beacon[i]<<=1;
shekhar 0:c3e85e9c3fa8 405 s_beacon[i] |= 0x01;
shekhar 0:c3e85e9c3fa8 406 }
shekhar 0:c3e85e9c3fa8 407 else
shekhar 0:c3e85e9c3fa8 408 s_beacon[i] <<= 1;
shekhar 0:c3e85e9c3fa8 409 }
shekhar 0:c3e85e9c3fa8 410
shekhar 0:c3e85e9c3fa8 411 //Printing short beacon data
shekhar 0:c3e85e9c3fa8 412 pc.printf("Received short beacon data:\n");
shekhar 0:c3e85e9c3fa8 413 pc.printf("Call Sign : ");
shekhar 0:c3e85e9c3fa8 414 for(int i = 0; i<7 ; i++)
shekhar 0:c3e85e9c3fa8 415 pc.printf(" %X ",s_beacon[i]);
shekhar 0:c3e85e9c3fa8 416
shekhar 0:c3e85e9c3fa8 417 pc.printf("\n\nVoltage[0] : ");
shekhar 0:c3e85e9c3fa8 418 pc.printf(" 0x%X \n\n",s_beacon[7]);
shekhar 0:c3e85e9c3fa8 419
shekhar 0:c3e85e9c3fa8 420 pc.printf("AngularSpeed[0] : ");
shekhar 0:c3e85e9c3fa8 421 pc.printf(" 0x%X \n\n",s_beacon[8]);
shekhar 0:c3e85e9c3fa8 422
shekhar 0:c3e85e9c3fa8 423 pc.printf("AngularSpeed[1] : ");
shekhar 0:c3e85e9c3fa8 424 pc.printf(" 0x%X \n\n",s_beacon[9]);
shekhar 0:c3e85e9c3fa8 425
shekhar 0:c3e85e9c3fa8 426 pc.printf("SubsystemStatus[0] : ");
shekhar 0:c3e85e9c3fa8 427 pc.printf(" 0x%X \n\n",s_beacon[10]);
shekhar 0:c3e85e9c3fa8 428
shekhar 0:c3e85e9c3fa8 429 pc.printf("Temp[0] : ");
shekhar 0:c3e85e9c3fa8 430 pc.printf(" 0x%X \n\n",s_beacon[11]);
shekhar 0:c3e85e9c3fa8 431
shekhar 0:c3e85e9c3fa8 432 pc.printf("Temp[1] : ");
shekhar 0:c3e85e9c3fa8 433 pc.printf(" 0x%X \n\n",s_beacon[12]);
shekhar 0:c3e85e9c3fa8 434
shekhar 0:c3e85e9c3fa8 435 pc.printf("Temp[2] : ");
shekhar 0:c3e85e9c3fa8 436 pc.printf(" 0x%X \n\n",s_beacon[13]);
shekhar 0:c3e85e9c3fa8 437
shekhar 0:c3e85e9c3fa8 438 pc.printf("ErrorFlag[0] : ");
shekhar 0:c3e85e9c3fa8 439 pc.printf(" 0x%X \n\n",s_beacon[14]);
shekhar 0:c3e85e9c3fa8 440 pc.printf("received headers : \n");
shekhar 0:c3e85e9c3fa8 441 pc.printf("header1 = 0x%X , header2 = 0x%X , header3 = 0x%X , header4 = 0x%X \n",readreg(0x47),readreg(0x48),readreg(0x49),readreg(0x4A));
shekhar 0:c3e85e9c3fa8 442
shekhar 0:c3e85e9c3fa8 443 pc.printf("Received long beacon data:\n");
shekhar 0:c3e85e9c3fa8 444 for(int i=0;i<RX_DATA_LONG;i++) pc.printf("0x%X \n",long_rx_data[i]);
shekhar 0:c3e85e9c3fa8 445 }
shekhar 0:c3e85e9c3fa8 446 }
shekhar 0:c3e85e9c3fa8 447 }