This is final Standalone code tested on Beacon. #FSK
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main.cpp
00001 /*#include "beacon.h" 00002 #include "HK.h" 00003 Serial chavan(USBTX, USBRX); // tx, rx 00004 SPI spi(PTD6,PTD7,PTD5); // mosi, miso, sclk 00005 DigitalOut cs(PTC11); //slave select or chip select 00006 00007 extern ShortBeacy Shortbeacon;*/ 00008 #include "beacon.h" 00009 Serial pc(USBTX, USBRX); // tx, rx 00010 SPI spi(D11, D12, D13); // mosi, miso, sclk 00011 DigitalOut cs(D10); //slave select or chip select 00012 Serial chavan(USBTX, USBRX); // tx, rx 00013 00014 void writereg(uint8_t reg,uint8_t val) 00015 { 00016 cs = 0;__disable_irq();spi.write(reg | 0x80);spi.write(val);__enable_irq();cs = 1; 00017 } 00018 uint8_t readreg(uint8_t reg) 00019 { 00020 int val;cs = 0;__disable_irq();spi.write(reg & ~0x80);val = spi.write(0);__enable_irq();cs = 1;return val; 00021 } 00022 void clearTxBuf() 00023 { 00024 writereg(RF22_REG_08_OPERATING_MODE2,0x01); 00025 writereg(RF22_REG_08_OPERATING_MODE2,0x00); 00026 } 00027 void clearRxBuf() 00028 { 00029 writereg(RF22_REG_08_OPERATING_MODE2,0x02); 00030 writereg(RF22_REG_08_OPERATING_MODE2,0x00); 00031 } 00032 int setFrequency(float centre,float afcPullInRange) 00033 { 00034 //freq setting begins 00035 uint8_t fbsel = 0x40; 00036 uint8_t afclimiter; 00037 if (centre >= 480.0) { 00038 centre /= 2; 00039 fbsel |= 0x20; 00040 afclimiter = afcPullInRange * 1000000.0 / 1250.0; 00041 } else { 00042 if (afcPullInRange < 0.0 || afcPullInRange > 0.159375) 00043 return false; 00044 afclimiter = afcPullInRange * 1000000.0 / 625.0; 00045 } 00046 centre /= 10.0; 00047 float integerPart = floor(centre); 00048 float fractionalPart = centre - integerPart; 00049 00050 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23 00051 fbsel |= fb; 00052 uint16_t fc = fractionalPart * 64000; 00053 writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT 00054 writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0); 00055 writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel); 00056 writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8); 00057 writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff); 00058 writereg(RF22_REG_2A_AFC_LIMITER, afclimiter); 00059 return 0; 00060 } 00061 00062 void init() 00063 { 00064 //reset() 00065 writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset 00066 wait(1); //takes time to reset 00067 00068 clearTxBuf(); 00069 clearRxBuf(); 00070 //txfifoalmostempty 00071 writereg(RF22_REG_7D_TX_FIFO_CONTROL2,5); 00072 //rxfifoalmostfull 00073 writereg(RF22_REG_7E_RX_FIFO_CONTROL,20); 00074 //Packet-engine registers 00075 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 00076 //&0x77 = diasable packet rx-tx handling 00077 writereg(RF22_REG_32_HEADER_CONTROL1,0x88); //RF22_REG_32_HEADER_CONTROL1, RF22_BCEN_HEADER3 | RF22_HDCH_HEADER3 00078 writereg(RF22_REG_33_HEADER_CONTROL2,0x42); //RF22_REG_33_HEADER_CONTROL2, RF22_HDLEN_4 | RF22_SYNCLEN_2 00079 writereg(RF22_REG_34_PREAMBLE_LENGTH,8); //RF22_REG_34_PREAMBLE_LENGTH, nibbles); preamble length = 8; 00080 writereg(RF22_REG_36_SYNC_WORD3,0x2D); //syncword3=2D 00081 writereg(RF22_REG_37_SYNC_WORD2,0xD4); //syncword2=D4 00082 writereg(RF22_REG_3F_CHECK_HEADER3,0); //RF22_REG_3F_CHECK_HEADER3, RF22_DEFAULT_NODE_ADDRESS 00083 writereg(RF22_REG_3A_TRANSMIT_HEADER3,0xab); //header_to 00084 writereg(RF22_REG_3B_TRANSMIT_HEADER2,0xbc); //header_from 00085 writereg(RF22_REG_3C_TRANSMIT_HEADER1,0xcd); //header_ids 00086 writereg(RF22_REG_3D_TRANSMIT_HEADER0,0xde); //header_flags 00087 writereg(RF22_REG_3F_CHECK_HEADER3,0xab); 00088 writereg(RF22_REG_40_CHECK_HEADER2,0xbc); 00089 writereg(RF22_REG_41_CHECK_HEADER1,0xcd); 00090 writereg(RF22_REG_42_CHECK_HEADER0,0xde); 00091 00092 //RSSI threshold for clear channel indicator 00093 writereg(RF22_REG_27_RSSI_THRESHOLD,0xA5); //55 for -80dBm, 2D for -100dBm, 7D for -60dBm, A5 for -40dBm, CD for -20 dBm 00094 00095 writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state ?? 00096 writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state ?? 00097 00098 //interrupts 00099 // spiWrite(RF22_REG_05_INTERRUPT_ENABLE1, RF22_ENTXFFAEM |RF22_ENRXFFAFULL | RF22_ENPKSENT |RF22_ENPKVALID| RF22_ENCRCERROR); 00100 // spiWrite(RF22_REG_06_INTERRUPT_ENABLE2, RF22_ENPREAVAL); 00101 00102 setFrequency(435.0, 0.05); 00103 00104 //return !(statusRead() & RF22_FREQERR); 00105 if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00) 00106 pc.printf("frequency not set properly\n"); 00107 //frequency set 00108 00109 //setModemConfig(FSK_Rb2_4Fd36); FSK_Rb2_4Fd36, ///< FSK, No Manchester, Rb = 2.4kbs, Fd = 36kHz 00110 //setmodemregisters 00111 //0x1b, 0x03, 0x41, 0x60, 0x27, 0x52, 0x00, 0x07, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x22, 0x3a = FSK_RB2_4FD36 00112 //0xc8, 0x03, 0x39, 0x20, 0x68, 0xdc, 0x00, 0x6b, 0x2a, 0x08, 0x2a, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x21, 0x08 = OOK,2.4, 335 00113 writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0x2B); 00114 writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03); 00115 writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x41); 00116 writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x60); 00117 writereg(RF22_REG_22_CLOCK_RECOVERY_OFFSET1,0x27); //updated 20 to 25 reg values from excel sheet for 1.2 Khz freq. deviation,fsk 00118 writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0x52); 00119 writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00); 00120 writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x51); 00121 /*writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2a); 00122 writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x08);*/ //not required for fsk (OOK counter value) 00123 writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x1e); //?? 00124 writereg(RF22_REG_58,0x80); 00125 writereg(RF22_REG_69_AGC_OVERRIDE1,0x60); 00126 writereg(RF22_REG_6E_TX_DATA_RATE1,0x09); 00127 writereg(RF22_REG_6F_TX_DATA_RATE0,0xd5); 00128 writereg(RF22_REG_70_MODULATION_CONTROL1,0x2c); 00129 writereg(RF22_REG_71_MODULATION_CONTROL2,0x22);//ook = 0x21 //fsk = 0x22 00130 writereg(RF22_REG_72_FREQUENCY_DEVIATION,0x02); 00131 //set tx power 00132 writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm 00133 writereg(RF22_REG_3E_PACKET_LENGTH,TX_DATA); //packet length 00134 } 00135 int main() 00136 { 00137 printf("\nBeacon function entered\n"); 00138 wait(1); // wait for POR to complete //change the timing later 00139 cs=1; // chip must be deselected 00140 wait(1); //change the time later 00141 spi.format(8,0); 00142 spi.frequency(10000000); //10MHz SCLK 00143 if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08) pc.printf("spi connection valid\n"); 00144 else pc.printf("error in spi connection\n"); 00145 00146 init(); 00147 00148 //******** 00149 //button.rise(&interrupt_func); //interrupt enabled ( rising edge of pin 9) 00150 wait(0.02); // pl. update this value or even avoid it!!! 00151 //extract values from short_beacon[] 00152 uint8_t byte_counter = 0; 00153 struct Short_beacon{ 00154 uint8_t Voltage[1]; 00155 uint8_t AngularSpeed[2]; 00156 uint8_t SubsystemStatus[1]; 00157 uint8_t Temp[3]; 00158 uint8_t ErrorFlag[1]; 00159 }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} }; 00160 00161 //filling hk data 00162 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]}; 00163 00164 for(int i = 0; i < 15 ; i++) 00165 { 00166 chavan.printf("0x%X\n",(short_beacon[i])); 00167 } 00168 //tx settings begin 00169 //setModeIdle(); 00170 writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode 00171 //fillTxBuf(data, len); 00172 clearTxBuf(); 00173 00174 //Set to Tx mode 00175 writereg(RF22_REG_07_OPERATING_MODE1,0x09); 00176 00177 while(byte_counter!=15){ 00178 //Check for fifoThresh 00179 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20); 00180 //writing again 00181 cs = 0; 00182 spi.write(0xFF); 00183 for(int i=7; i>=0 ;i--) 00184 { 00185 //pc.printf("%d\n",byte_counter); 00186 if((short_beacon[byte_counter] & (uint8_t) pow(2.0,i))!=0) 00187 { 00188 spi.write(0xFF); 00189 spi.write(0xFF); 00190 } 00191 else 00192 { 00193 spi.write(0x00); 00194 spi.write(0x00); 00195 00196 } 00197 } 00198 cs = 1; 00199 byte_counter++; 00200 00201 } 00202 //rf22.waitPacketSent(); 00203 while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04)pc.printf(" chck pkt sent!\n"); 00204 printf("\nBeacon function exiting\n"); 00205 00206 }
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