bcn code modification for new short bcn format
Fork of BEACON_CODE by
BCN.cpp@26:e5d6c0cffa82, 2016-05-17 (annotated)
- Committer:
- azaddevarm
- Date:
- Tue May 17 15:13:49 2016 +0000
- Revision:
- 26:e5d6c0cffa82
- Parent:
- 25:90cdfbadea91
Modifying bcn as per new format
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
shekhar | 18:3d8e70286f67 | 1 | #include "BCN.h" |
shekhar | 24:ca96cddf25d0 | 2 | #include <stdio.h> |
shekhar | 24:ca96cddf25d0 | 3 | #include "pin_config.h" |
shekhar | 17:afadd6b988a2 | 4 | //Check the pin names |
shekhar | 17:afadd6b988a2 | 5 | //Takes max 4.3 sec in void FCTN_BCN_TX_MAIN() (temp.calc. + long_beacon + short_beacon) |
shekhar | 17:afadd6b988a2 | 6 | |
shekhar | 24:ca96cddf25d0 | 7 | Serial pc_bcn(USBTX, USBRX); //tx,rx |
azaddevarm | 26:e5d6c0cffa82 | 8 | SPI spi(D11, D12, D13); // mosi, miso, sclk |
azaddevarm | 26:e5d6c0cffa82 | 9 | DigitalOut cs(D10); //slave select or chip select |
azaddevarm | 26:e5d6c0cffa82 | 10 | //SPI spi(PIN16, PIN17, PIN15); // mosi, miso, sclk |
azaddevarm | 26:e5d6c0cffa82 | 11 | //DigitalOut cs(PIN6); //slave select or chip select |
shekhar | 24:ca96cddf25d0 | 12 | Timer t_i;//timer for checking the time taken by (temp.calc. + long_beacon + short_beacon) |
azaddevarm | 26:e5d6c0cffa82 | 13 | //Timer t_is;//timer for short_beacon |
azaddevarm | 26:e5d6c0cffa82 | 14 | //Timer t_il;//timer for long_beacon |
shekhar | 24:ca96cddf25d0 | 15 | Timeout rf_sl_timeout;//RF_silence timer |
shekhar | 24:ca96cddf25d0 | 16 | Ticker loop;//for transmitting every 10 secs |
shekhar | 17:afadd6b988a2 | 17 | |
shekhar | 17:afadd6b988a2 | 18 | //GLOBAL VARIABLES |
shekhar | 17:afadd6b988a2 | 19 | uint8_t BCN_INIT_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 20 | uint8_t BCN_TX_MAIN_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 21 | uint8_t BCN_TX_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 22 | uint8_t BCN_TX_EN = 1; //hardcoding for now //check where is this variable toggled?? |
shekhar | 19:6863457ea3d1 | 23 | uint8_t BCN_FEN = 0; //hardcoding for now //write this value to flash |
shekhar | 17:afadd6b988a2 | 24 | uint8_t BCN_STANDBY = 0; //hardcoding for now //check where is this variable toggled?? |
shekhar | 25:90cdfbadea91 | 25 | uint8_t BCN_TS_BUFFER = 0; // For Temperature |
shekhar | 25:90cdfbadea91 | 26 | uint8_t ERROR_CHECK = 0; |
shekhar | 25:90cdfbadea91 | 27 | 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) |
shekhar | 25:90cdfbadea91 | 28 | //This Flag when exceeds a threshold, uC should reset. |
shekhar | 17:afadd6b988a2 | 29 | void FCTN_BCN_INIT() |
shekhar | 17:afadd6b988a2 | 30 | { |
shekhar | 24:ca96cddf25d0 | 31 | pc_bcn.printf("FCTN_BCN_INIT\n"); |
shekhar | 24:ca96cddf25d0 | 32 | Init_BEACON_HW(); |
shekhar | 17:afadd6b988a2 | 33 | BCN_INIT_STATUS = 1; |
shekhar | 24:ca96cddf25d0 | 34 | if(BCN_FEN == 0)//BCN_FEN is in flash |
shekhar | 24:ca96cddf25d0 | 35 | rf_sl_timeout.attach(&FCTN_BCN_FEN, RF_SILENCE_TIME); |
shekhar | 17:afadd6b988a2 | 36 | BCN_INIT_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 37 | } |
shekhar | 17:afadd6b988a2 | 38 | void FCTN_BCN_FEN() |
shekhar | 17:afadd6b988a2 | 39 | { |
shekhar | 24:ca96cddf25d0 | 40 | pc_bcn.printf("FCTN_FEN\n"); |
shekhar | 17:afadd6b988a2 | 41 | BCN_FEN = 1;//write this value to flash |
shekhar | 17:afadd6b988a2 | 42 | } |
shekhar | 17:afadd6b988a2 | 43 | void FCTN_BCN_TX_MAIN() |
shekhar | 17:afadd6b988a2 | 44 | { |
shekhar | 25:90cdfbadea91 | 45 | ERROR_CHECK=0; |
shekhar | 24:ca96cddf25d0 | 46 | pc_bcn.printf("FCTN_BCN_TX_MAIN\n"); |
shekhar | 17:afadd6b988a2 | 47 | t_i.start(); |
shekhar | 17:afadd6b988a2 | 48 | int begin = t_i.read_us(); |
azaddevarm | 26:e5d6c0cffa82 | 49 | int begins,beginl,ends,endl; |
shekhar | 17:afadd6b988a2 | 50 | BCN_TX_MAIN_STATUS = 1; |
shekhar | 17:afadd6b988a2 | 51 | |
shekhar | 17:afadd6b988a2 | 52 | if(BCN_FEN == 1) |
shekhar | 17:afadd6b988a2 | 53 | { |
shekhar | 17:afadd6b988a2 | 54 | if(BCN_TX_EN == 1) |
shekhar | 17:afadd6b988a2 | 55 | { |
shekhar | 17:afadd6b988a2 | 56 | //Measure and store BCN temperature in BCN_TS_BUFFER |
shekhar | 17:afadd6b988a2 | 57 | BCN_TS_BUFFER = check_Temperature(); |
shekhar | 24:ca96cddf25d0 | 58 | pc_bcn.printf("\n\ntemperature = %d\n\n",BCN_TS_BUFFER); |
shekhar | 17:afadd6b988a2 | 59 | //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER |
shekhar | 17:afadd6b988a2 | 60 | if(BCN_STANDBY == 1 ) |
shekhar | 17:afadd6b988a2 | 61 | { |
shekhar | 17:afadd6b988a2 | 62 | Set_BCN_TX_STATUS(BCN_TX_STANDBY); |
shekhar | 17:afadd6b988a2 | 63 | BCN_TX_MAIN_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 64 | |
shekhar | 17:afadd6b988a2 | 65 | // break; |
shekhar | 17:afadd6b988a2 | 66 | } |
shekhar | 17:afadd6b988a2 | 67 | else |
shekhar | 17:afadd6b988a2 | 68 | { |
shekhar | 17:afadd6b988a2 | 69 | //transmit short beacon and long beacon |
azaddevarm | 26:e5d6c0cffa82 | 70 | //t_is.start(); |
azaddevarm | 26:e5d6c0cffa82 | 71 | begins = t_i.read_us(); |
shekhar | 17:afadd6b988a2 | 72 | SHORT_BCN_TX(); |
azaddevarm | 26:e5d6c0cffa82 | 73 | //t_is.stop(); |
azaddevarm | 26:e5d6c0cffa82 | 74 | ends = t_i.read_us(); |
azaddevarm | 26:e5d6c0cffa82 | 75 | |
azaddevarm | 26:e5d6c0cffa82 | 76 | //t_il.start(); |
azaddevarm | 26:e5d6c0cffa82 | 77 | beginl = t_i.read_us(); |
shekhar | 23:a864d57f10c4 | 78 | LONG_BCN_TX(); |
azaddevarm | 26:e5d6c0cffa82 | 79 | //t_il.stop(); |
azaddevarm | 26:e5d6c0cffa82 | 80 | endl = t_i.read_us(); |
shekhar | 17:afadd6b988a2 | 81 | |
shekhar | 17:afadd6b988a2 | 82 | if(Check_ACK_RECEIVED() == 1) |
shekhar | 17:afadd6b988a2 | 83 | { |
shekhar | 17:afadd6b988a2 | 84 | Set_BCN_TX_STATUS(BCN_TX_SUCCESS); |
shekhar | 17:afadd6b988a2 | 85 | BCN_TX_MAIN_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 86 | } |
shekhar | 17:afadd6b988a2 | 87 | else |
shekhar | 17:afadd6b988a2 | 88 | { |
shekhar | 17:afadd6b988a2 | 89 | Set_BCN_TX_STATUS(BCN_TX_FAILURE); |
shekhar | 17:afadd6b988a2 | 90 | BCN_TX_MAIN_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 91 | |
shekhar | 17:afadd6b988a2 | 92 | } |
shekhar | 17:afadd6b988a2 | 93 | } |
shekhar | 17:afadd6b988a2 | 94 | } |
shekhar | 17:afadd6b988a2 | 95 | else |
shekhar | 17:afadd6b988a2 | 96 | { |
shekhar | 17:afadd6b988a2 | 97 | Set_BCN_TX_STATUS(BCN_TX_DISABLED); |
shekhar | 17:afadd6b988a2 | 98 | BCN_TX_MAIN_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 99 | } |
shekhar | 17:afadd6b988a2 | 100 | } |
shekhar | 17:afadd6b988a2 | 101 | else |
shekhar | 17:afadd6b988a2 | 102 | { |
shekhar | 17:afadd6b988a2 | 103 | Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on. |
shekhar | 17:afadd6b988a2 | 104 | BCN_TX_MAIN_STATUS = 0; |
shekhar | 17:afadd6b988a2 | 105 | } |
shekhar | 17:afadd6b988a2 | 106 | t_i.stop(); |
shekhar | 17:afadd6b988a2 | 107 | int end = t_i.read_us(); |
shekhar | 24:ca96cddf25d0 | 108 | pc_bcn.printf("The time required for FCTN_BCN_TX_MAIN is %d useconds\r\n", end-begin); |
azaddevarm | 26:e5d6c0cffa82 | 109 | pc_bcn.printf("The time required for Short_BCN is %d useconds\r\n", ends-begins); |
azaddevarm | 26:e5d6c0cffa82 | 110 | pc_bcn.printf("The time required for Long_BCN is %d useconds\r\n", endl-beginl); |
shekhar | 25:90cdfbadea91 | 111 | ERROR_CHECK = 0; |
shekhar | 17:afadd6b988a2 | 112 | |
shekhar | 17:afadd6b988a2 | 113 | } |
shekhar | 17:afadd6b988a2 | 114 | |
shekhar | 17:afadd6b988a2 | 115 | void Set_BCN_TX_STATUS(uint8_t STATUS) |
shekhar | 17:afadd6b988a2 | 116 | { |
shekhar | 17:afadd6b988a2 | 117 | BCN_TX_STATUS = STATUS; |
shekhar | 17:afadd6b988a2 | 118 | } |
shekhar | 17:afadd6b988a2 | 119 | |
shekhar | 17:afadd6b988a2 | 120 | uint8_t check_Temperature() |
shekhar | 17:afadd6b988a2 | 121 | { |
shekhar | 17:afadd6b988a2 | 122 | uint8_t temperature; |
shekhar | 24:ca96cddf25d0 | 123 | writereg(RF22_REG_0F_ADC_CONFIGURATION,0x00);//set ADC to temp measurement |
shekhar | 24:ca96cddf25d0 | 124 | writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x20);//measure in degree celsius |
shekhar | 24:ca96cddf25d0 | 125 | writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80);//start adc |
shekhar | 17:afadd6b988a2 | 126 | wait(0.1); |
shekhar | 17:afadd6b988a2 | 127 | temperature = readreg(RF22_REG_11_ADC_Value); |
shekhar | 17:afadd6b988a2 | 128 | temperature = (float)temperature*0.5 - 64; |
shekhar | 17:afadd6b988a2 | 129 | return temperature; |
shekhar | 17:afadd6b988a2 | 130 | } |
shekhar | 17:afadd6b988a2 | 131 | |
shekhar | 17:afadd6b988a2 | 132 | void SHORT_BCN_TX() |
shekhar | 17:afadd6b988a2 | 133 | { |
azaddevarm | 26:e5d6c0cffa82 | 134 | /* |
shekhar | 17:afadd6b988a2 | 135 | writereg(RF22_REG_6E_TX_DATA_RATE,0x01); |
shekhar | 20:89b6bb0859a1 | 136 | writereg(RF22_REG_6F_TX_DATA_RATE,0x50);//160bps |
azaddevarm | 26:e5d6c0cffa82 | 137 | */ |
azaddevarm | 26:e5d6c0cffa82 | 138 | writereg(RF22_REG_6E_TX_DATA_RATE,0x0A); |
azaddevarm | 26:e5d6c0cffa82 | 139 | writereg(RF22_REG_6F_TX_DATA_RATE,0x7D);//1280bps |
azaddevarm | 26:e5d6c0cffa82 | 140 | |
shekhar | 17:afadd6b988a2 | 141 | writereg(RF22_REG_3E_PACKET_LENGTH,SHORT_TX_DATA); //short packet length |
shekhar | 17:afadd6b988a2 | 142 | wait(0.02); |
shekhar | 17:afadd6b988a2 | 143 | |
shekhar | 17:afadd6b988a2 | 144 | uint32_t timeout_count = 10e5; |
shekhar | 17:afadd6b988a2 | 145 | //extract values from short_beacon[] |
shekhar | 17:afadd6b988a2 | 146 | |
shekhar | 17:afadd6b988a2 | 147 | struct Short_beacon |
shekhar | 17:afadd6b988a2 | 148 | { |
shekhar | 17:afadd6b988a2 | 149 | uint8_t Voltage[1]; |
shekhar | 17:afadd6b988a2 | 150 | uint8_t AngularSpeed[2]; |
shekhar | 17:afadd6b988a2 | 151 | uint8_t SubsystemStatus[1]; |
shekhar | 17:afadd6b988a2 | 152 | uint8_t Temp[3]; |
shekhar | 17:afadd6b988a2 | 153 | uint8_t ErrorFlag[1]; |
shekhar | 17:afadd6b988a2 | 154 | }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} }; |
shekhar | 17:afadd6b988a2 | 155 | |
shekhar | 17:afadd6b988a2 | 156 | //filling hk data |
shekhar | 17:afadd6b988a2 | 157 | //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]}; |
shekhar | 17:afadd6b988a2 | 158 | 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 | 17:afadd6b988a2 | 159 | |
shekhar | 17:afadd6b988a2 | 160 | //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ?? |
azaddevarm | 26:e5d6c0cffa82 | 161 | clearTxBuf(); //writing data first time |
azaddevarm | 26:e5d6c0cffa82 | 162 | |
azaddevarm | 26:e5d6c0cffa82 | 163 | int byte = 0,byte_count=0; |
azaddevarm | 26:e5d6c0cffa82 | 164 | //int spi_start,spi_end,spi_total=0; |
shekhar | 17:afadd6b988a2 | 165 | for (int byte_counter = 0; byte_counter <15 ; byte_counter++) |
shekhar | 17:afadd6b988a2 | 166 | { |
azaddevarm | 26:e5d6c0cffa82 | 167 | //pc_bcn.printf("byte-counter=%d\r\n", byte_counter); |
azaddevarm | 26:e5d6c0cffa82 | 168 | /* |
shekhar | 17:afadd6b988a2 | 169 | for(int j = 3; j >= 0 ; j--) |
shekhar | 17:afadd6b988a2 | 170 | { |
shekhar | 17:afadd6b988a2 | 171 | if((short_beacon[byte_counter] & (uint8_t) pow(2.0,(j*2+1)))!= pow(2.0,(j*2+1))) |
shekhar | 17:afadd6b988a2 | 172 | { |
shekhar | 17:afadd6b988a2 | 173 | byte=0x00; |
shekhar | 17:afadd6b988a2 | 174 | } |
shekhar | 17:afadd6b988a2 | 175 | else |
shekhar | 17:afadd6b988a2 | 176 | { |
shekhar | 17:afadd6b988a2 | 177 | byte=0xF0; |
shekhar | 17:afadd6b988a2 | 178 | } |
shekhar | 17:afadd6b988a2 | 179 | if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j*2))!= pow(2.0,j*2)) |
shekhar | 17:afadd6b988a2 | 180 | { |
shekhar | 17:afadd6b988a2 | 181 | byte=byte | 0x00; |
shekhar | 17:afadd6b988a2 | 182 | } |
shekhar | 17:afadd6b988a2 | 183 | else |
shekhar | 17:afadd6b988a2 | 184 | { |
shekhar | 17:afadd6b988a2 | 185 | byte=byte | 0x0F; |
shekhar | 17:afadd6b988a2 | 186 | } |
azaddevarm | 26:e5d6c0cffa82 | 187 | cs = 0; |
azaddevarm | 26:e5d6c0cffa82 | 188 | spi.write(0xFF); |
shekhar | 17:afadd6b988a2 | 189 | spi.write(byte); |
azaddevarm | 26:e5d6c0cffa82 | 190 | cs = 1; |
shekhar | 17:afadd6b988a2 | 191 | } |
azaddevarm | 26:e5d6c0cffa82 | 192 | */ |
azaddevarm | 26:e5d6c0cffa82 | 193 | for(int j = 7; j >= 0 ; j--) |
azaddevarm | 26:e5d6c0cffa82 | 194 | { |
azaddevarm | 26:e5d6c0cffa82 | 195 | //spi_start = t_i.read_us(); |
azaddevarm | 26:e5d6c0cffa82 | 196 | if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j))!= pow(2.0,j)) |
azaddevarm | 26:e5d6c0cffa82 | 197 | { |
azaddevarm | 26:e5d6c0cffa82 | 198 | byte=0x00; |
azaddevarm | 26:e5d6c0cffa82 | 199 | } |
azaddevarm | 26:e5d6c0cffa82 | 200 | else |
azaddevarm | 26:e5d6c0cffa82 | 201 | { |
azaddevarm | 26:e5d6c0cffa82 | 202 | byte=0xFF; |
azaddevarm | 26:e5d6c0cffa82 | 203 | } |
azaddevarm | 26:e5d6c0cffa82 | 204 | |
azaddevarm | 26:e5d6c0cffa82 | 205 | cs = 0; |
azaddevarm | 26:e5d6c0cffa82 | 206 | spi.write(0xFF); |
azaddevarm | 26:e5d6c0cffa82 | 207 | spi.write(byte); |
azaddevarm | 26:e5d6c0cffa82 | 208 | spi.write(byte); |
azaddevarm | 26:e5d6c0cffa82 | 209 | spi.write(byte); |
azaddevarm | 26:e5d6c0cffa82 | 210 | spi.write(byte); //Each bit is written 32 times |
azaddevarm | 26:e5d6c0cffa82 | 211 | byte_count+=4; |
azaddevarm | 26:e5d6c0cffa82 | 212 | cs = 1; |
azaddevarm | 26:e5d6c0cffa82 | 213 | |
azaddevarm | 26:e5d6c0cffa82 | 214 | //spi_end = t_i.read_us(); |
azaddevarm | 26:e5d6c0cffa82 | 215 | //spi_total += spi_end-spi_start; |
azaddevarm | 26:e5d6c0cffa82 | 216 | //pc_bcn.printf("Time taken to write one byte = %d\r\n",spi_end-spi_start); |
azaddevarm | 26:e5d6c0cffa82 | 217 | } |
azaddevarm | 26:e5d6c0cffa82 | 218 | |
azaddevarm | 26:e5d6c0cffa82 | 219 | if(byte_counter % 2 == 1) |
azaddevarm | 26:e5d6c0cffa82 | 220 | { |
azaddevarm | 26:e5d6c0cffa82 | 221 | |
azaddevarm | 26:e5d6c0cffa82 | 222 | //Set to Tx mode |
azaddevarm | 26:e5d6c0cffa82 | 223 | writereg(RF22_REG_07_OPERATING_MODE1,0x08); //txon |
azaddevarm | 26:e5d6c0cffa82 | 224 | wait(0.1);// takes time to set to tx mode hence the delay of 0.1. |
azaddevarm | 26:e5d6c0cffa82 | 225 | |
azaddevarm | 26:e5d6c0cffa82 | 226 | //Check for fifoThresh |
azaddevarm | 26:e5d6c0cffa82 | 227 | while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else if(timeout_count == 1) |
azaddevarm | 26:e5d6c0cffa82 | 228 | { |
azaddevarm | 26:e5d6c0cffa82 | 229 | pc_bcn.printf("Reset\n"); |
azaddevarm | 26:e5d6c0cffa82 | 230 | reset_rfm(1);} |
azaddevarm | 26:e5d6c0cffa82 | 231 | timeout_count=10e5; |
azaddevarm | 26:e5d6c0cffa82 | 232 | |
azaddevarm | 26:e5d6c0cffa82 | 233 | } |
azaddevarm | 26:e5d6c0cffa82 | 234 | |
shekhar | 17:afadd6b988a2 | 235 | } |
azaddevarm | 26:e5d6c0cffa82 | 236 | |
shekhar | 17:afadd6b988a2 | 237 | //Set to Tx mode |
shekhar | 24:ca96cddf25d0 | 238 | writereg(RF22_REG_07_OPERATING_MODE1,0x08); //txon |
shekhar | 24:ca96cddf25d0 | 239 | wait(0.1);// takes time to set to tx mode hence the delay of 0.1. |
shekhar | 24:ca96cddf25d0 | 240 | |
shekhar | 17:afadd6b988a2 | 241 | //Check for fifoThresh |
azaddevarm | 26:e5d6c0cffa82 | 242 | while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else if(timeout_count == 1) |
azaddevarm | 26:e5d6c0cffa82 | 243 | { |
azaddevarm | 26:e5d6c0cffa82 | 244 | pc_bcn.printf("Reset\n"); |
azaddevarm | 26:e5d6c0cffa82 | 245 | reset_rfm(1);} |
shekhar | 17:afadd6b988a2 | 246 | timeout_count=10e5; |
shekhar | 17:afadd6b988a2 | 247 | |
azaddevarm | 26:e5d6c0cffa82 | 248 | //Check for packetsent interrupt |
shekhar | 25:90cdfbadea91 | 249 | while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;else if(timeout_count == 1) reset_rfm(1); |
shekhar | 17:afadd6b988a2 | 250 | |
azaddevarm | 26:e5d6c0cffa82 | 251 | pc_bcn.printf("Short packet sent, bytes = %d\r\n",byte_count); |
shekhar | 17:afadd6b988a2 | 252 | |
shekhar | 17:afadd6b988a2 | 253 | writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode |
shekhar | 17:afadd6b988a2 | 254 | |
shekhar | 17:afadd6b988a2 | 255 | } |
shekhar | 17:afadd6b988a2 | 256 | void LONG_BCN_TX() |
shekhar | 17:afadd6b988a2 | 257 | { |
azaddevarm | 26:e5d6c0cffa82 | 258 | /* |
shekhar | 17:afadd6b988a2 | 259 | writereg(RF22_REG_6E_TX_DATA_RATE,0x04); |
shekhar | 17:afadd6b988a2 | 260 | writereg(RF22_REG_6F_TX_DATA_RATE,0xEA);//600 bps |
azaddevarm | 26:e5d6c0cffa82 | 261 | */ |
shekhar | 17:afadd6b988a2 | 262 | writereg(RF22_REG_3E_PACKET_LENGTH,LONG_TX_DATA); //long packet length |
shekhar | 17:afadd6b988a2 | 263 | wait(0.02); |
shekhar | 17:afadd6b988a2 | 264 | uint32_t timeout_count=10e5; |
shekhar | 17:afadd6b988a2 | 265 | |
shekhar | 17:afadd6b988a2 | 266 | //get long_beacon array |
shekhar | 17:afadd6b988a2 | 267 | |
azaddevarm | 26:e5d6c0cffa82 | 268 | uint8_t Long_beacon[LONG_TX_DATA]; |
azaddevarm | 26:e5d6c0cffa82 | 269 | for(int i = 0;i<LONG_TX_DATA;i++) |
shekhar | 17:afadd6b988a2 | 270 | { |
shekhar | 17:afadd6b988a2 | 271 | Long_beacon[i] = 0xA0; |
shekhar | 17:afadd6b988a2 | 272 | } |
shekhar | 17:afadd6b988a2 | 273 | |
shekhar | 17:afadd6b988a2 | 274 | clearTxBuf(); |
shekhar | 17:afadd6b988a2 | 275 | //writing data first time |
shekhar | 17:afadd6b988a2 | 276 | cs = 0; |
shekhar | 17:afadd6b988a2 | 277 | spi.write(0xFF); |
azaddevarm | 26:e5d6c0cffa82 | 278 | for(int i=0; i<64;i++) |
shekhar | 17:afadd6b988a2 | 279 | { |
shekhar | 17:afadd6b988a2 | 280 | spi.write(Long_beacon[i]); |
shekhar | 17:afadd6b988a2 | 281 | } |
shekhar | 17:afadd6b988a2 | 282 | cs = 1; |
shekhar | 17:afadd6b988a2 | 283 | |
shekhar | 17:afadd6b988a2 | 284 | //Set to Tx mode |
shekhar | 23:a864d57f10c4 | 285 | writereg(RF22_REG_07_OPERATING_MODE1,0x08); |
shekhar | 24:ca96cddf25d0 | 286 | wait(0.1);//necessary |
shekhar | 17:afadd6b988a2 | 287 | |
shekhar | 17:afadd6b988a2 | 288 | //Check for fifoThresh |
azaddevarm | 26:e5d6c0cffa82 | 289 | while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else if(timeout_count == 1) |
azaddevarm | 26:e5d6c0cffa82 | 290 | { |
azaddevarm | 26:e5d6c0cffa82 | 291 | pc_bcn.printf("Reset\n"); |
azaddevarm | 26:e5d6c0cffa82 | 292 | reset_rfm(1);} |
shekhar | 17:afadd6b988a2 | 293 | timeout_count=10e5; |
shekhar | 17:afadd6b988a2 | 294 | |
shekhar | 17:afadd6b988a2 | 295 | cs = 0; |
shekhar | 17:afadd6b988a2 | 296 | spi.write(0xFF); |
azaddevarm | 26:e5d6c0cffa82 | 297 | for(int i=64; i<127;i++) |
shekhar | 17:afadd6b988a2 | 298 | { |
shekhar | 17:afadd6b988a2 | 299 | spi.write(Long_beacon[i]); |
shekhar | 17:afadd6b988a2 | 300 | } |
shekhar | 17:afadd6b988a2 | 301 | cs = 1; |
shekhar | 17:afadd6b988a2 | 302 | wait(0.1); |
shekhar | 17:afadd6b988a2 | 303 | //Check for fifoThresh |
azaddevarm | 26:e5d6c0cffa82 | 304 | while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) == 0x20)break;else if(timeout_count == 1) |
azaddevarm | 26:e5d6c0cffa82 | 305 | { |
azaddevarm | 26:e5d6c0cffa82 | 306 | pc_bcn.printf("Reset\n"); |
azaddevarm | 26:e5d6c0cffa82 | 307 | reset_rfm(1);} |
shekhar | 17:afadd6b988a2 | 308 | timeout_count=10e5; |
shekhar | 17:afadd6b988a2 | 309 | |
shekhar | 17:afadd6b988a2 | 310 | //Check for packetsent interrupt |
shekhar | 25:90cdfbadea91 | 311 | while(timeout_count--)if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04)break;else if(timeout_count == 1) reset_rfm(1); |
shekhar | 17:afadd6b988a2 | 312 | |
shekhar | 24:ca96cddf25d0 | 313 | //pc_bcn.printf("Long packet sent\r\n"); |
shekhar | 17:afadd6b988a2 | 314 | |
shekhar | 17:afadd6b988a2 | 315 | writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode |
shekhar | 17:afadd6b988a2 | 316 | } |
shekhar | 25:90cdfbadea91 | 317 | void reset_rfm(uint8_t fl) |
shekhar | 17:afadd6b988a2 | 318 | { |
shekhar | 25:90cdfbadea91 | 319 | if (fl ==1 && ERROR_CHECK ==0) |
shekhar | 25:90cdfbadea91 | 320 | {BCN_FAIL_COUNT++; |
shekhar | 25:90cdfbadea91 | 321 | ERROR_CHECK=1; |
shekhar | 25:90cdfbadea91 | 322 | printf("BCN_FAIL_COUNT++\n");} |
shekhar | 25:90cdfbadea91 | 323 | else if(fl == 0) |
shekhar | 25:90cdfbadea91 | 324 | {BCN_FAIL_COUNT = 0; |
shekhar | 25:90cdfbadea91 | 325 | ERROR_CHECK=0;} |
shekhar | 17:afadd6b988a2 | 326 | } |
shekhar | 17:afadd6b988a2 | 327 | void writereg(uint8_t reg,uint8_t val) |
shekhar | 17:afadd6b988a2 | 328 | { |
shekhar | 25:90cdfbadea91 | 329 | |
shekhar | 17:afadd6b988a2 | 330 | uint8_t count = 0; |
shekhar | 17:afadd6b988a2 | 331 | for(;;count++) |
shekhar | 17:afadd6b988a2 | 332 | { |
shekhar | 17:afadd6b988a2 | 333 | int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1; |
shekhar | 17:afadd6b988a2 | 334 | if(reg != 0x7 && reg != 0x58 && reg != 0xF) |
shekhar | 17:afadd6b988a2 | 335 | { |
shekhar | 17:afadd6b988a2 | 336 | read_val = readreg(reg); |
shekhar | 17:afadd6b988a2 | 337 | if (read_val == val) |
shekhar | 17:afadd6b988a2 | 338 | { |
shekhar | 17:afadd6b988a2 | 339 | break; |
shekhar | 17:afadd6b988a2 | 340 | } |
shekhar | 17:afadd6b988a2 | 341 | else if(count == 5) |
shekhar | 17:afadd6b988a2 | 342 | { |
shekhar | 25:90cdfbadea91 | 343 | reset_rfm(1); printf("reg = 0x%X\n",reg);break; |
shekhar | 17:afadd6b988a2 | 344 | } |
shekhar | 25:90cdfbadea91 | 345 | else init_spi(); |
shekhar | 17:afadd6b988a2 | 346 | } |
shekhar | 17:afadd6b988a2 | 347 | else |
shekhar | 17:afadd6b988a2 | 348 | break; |
shekhar | 17:afadd6b988a2 | 349 | } |
shekhar | 17:afadd6b988a2 | 350 | } |
shekhar | 17:afadd6b988a2 | 351 | uint8_t readreg(uint8_t reg) |
shekhar | 17:afadd6b988a2 | 352 | { |
shekhar | 17:afadd6b988a2 | 353 | uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val; |
shekhar | 17:afadd6b988a2 | 354 | } |
shekhar | 17:afadd6b988a2 | 355 | void clearTxBuf() |
shekhar | 17:afadd6b988a2 | 356 | { |
shekhar | 17:afadd6b988a2 | 357 | writereg(RF22_REG_08_OPERATING_MODE2,0x01); |
shekhar | 17:afadd6b988a2 | 358 | writereg(RF22_REG_08_OPERATING_MODE2,0x00); |
shekhar | 17:afadd6b988a2 | 359 | } |
shekhar | 23:a864d57f10c4 | 360 | uint8_t setFrequency(double centre) |
shekhar | 17:afadd6b988a2 | 361 | { |
shekhar | 17:afadd6b988a2 | 362 | uint8_t fbsel = 0x40; |
shekhar | 17:afadd6b988a2 | 363 | if (centre >= 480.0) { |
shekhar | 17:afadd6b988a2 | 364 | centre /= 2; |
shekhar | 17:afadd6b988a2 | 365 | fbsel |= 0x20; |
shekhar | 23:a864d57f10c4 | 366 | } |
shekhar | 17:afadd6b988a2 | 367 | centre /= 10.0; |
shekhar | 17:afadd6b988a2 | 368 | double integerPart = floor(centre); |
shekhar | 17:afadd6b988a2 | 369 | double fractionalPart = centre - integerPart; |
shekhar | 17:afadd6b988a2 | 370 | |
shekhar | 17:afadd6b988a2 | 371 | uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23 |
shekhar | 17:afadd6b988a2 | 372 | fbsel |= fb; |
shekhar | 17:afadd6b988a2 | 373 | uint16_t fc = fractionalPart * 64000; |
shekhar | 17:afadd6b988a2 | 374 | writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT |
shekhar | 17:afadd6b988a2 | 375 | writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0); |
shekhar | 17:afadd6b988a2 | 376 | writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel); |
shekhar | 17:afadd6b988a2 | 377 | writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8); |
shekhar | 17:afadd6b988a2 | 378 | writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff); |
shekhar | 17:afadd6b988a2 | 379 | return 0; |
shekhar | 17:afadd6b988a2 | 380 | } |
shekhar | 25:90cdfbadea91 | 381 | void init_spi() |
shekhar | 17:afadd6b988a2 | 382 | { |
shekhar | 17:afadd6b988a2 | 383 | cs=1; // chip must be deselected |
shekhar | 17:afadd6b988a2 | 384 | wait(0.1); |
shekhar | 17:afadd6b988a2 | 385 | spi.format(8,0); |
shekhar | 17:afadd6b988a2 | 386 | spi.frequency(10000000); //10MHz SCLK |
shekhar | 25:90cdfbadea91 | 387 | } |
shekhar | 25:90cdfbadea91 | 388 | void Init_BEACON_HW() |
shekhar | 25:90cdfbadea91 | 389 | { |
shekhar | 25:90cdfbadea91 | 390 | ERROR_CHECK=0; |
shekhar | 25:90cdfbadea91 | 391 | wait(0.1); |
shekhar | 25:90cdfbadea91 | 392 | int i = 5; |
shekhar | 25:90cdfbadea91 | 393 | while(i--) |
shekhar | 25:90cdfbadea91 | 394 | { |
shekhar | 25:90cdfbadea91 | 395 | init_spi(); |
shekhar | 17:afadd6b988a2 | 396 | |
shekhar | 17:afadd6b988a2 | 397 | //should either have a flag for invalid SPI or discard this for actual case or add reset |
shekhar | 17:afadd6b988a2 | 398 | if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08) |
shekhar | 25:90cdfbadea91 | 399 | {pc_bcn.printf("spi connection valid\r\n"); |
shekhar | 25:90cdfbadea91 | 400 | reset_rfm(0);break;} |
shekhar | 25:90cdfbadea91 | 401 | else if (i == 1) |
shekhar | 24:ca96cddf25d0 | 402 | {pc_bcn.printf("error in spi connection\r\n"); |
shekhar | 25:90cdfbadea91 | 403 | reset_rfm(1); |
shekhar | 25:90cdfbadea91 | 404 | return; |
shekhar | 17:afadd6b988a2 | 405 | } |
shekhar | 25:90cdfbadea91 | 406 | } |
shekhar | 17:afadd6b988a2 | 407 | |
shekhar | 17:afadd6b988a2 | 408 | writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset |
shekhar | 17:afadd6b988a2 | 409 | wait(0.1); //takes time to reset |
shekhar | 17:afadd6b988a2 | 410 | |
shekhar | 17:afadd6b988a2 | 411 | clearTxBuf(); |
shekhar | 17:afadd6b988a2 | 412 | |
shekhar | 17:afadd6b988a2 | 413 | writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode |
shekhar | 17:afadd6b988a2 | 414 | |
shekhar | 17:afadd6b988a2 | 415 | //txfifoalmostempty |
shekhar | 17:afadd6b988a2 | 416 | writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30); |
shekhar | 17:afadd6b988a2 | 417 | |
shekhar | 17:afadd6b988a2 | 418 | //Packet-engine registers |
shekhar | 17:afadd6b988a2 | 419 | writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00); |
shekhar | 17:afadd6b988a2 | 420 | |
shekhar | 17:afadd6b988a2 | 421 | writereg(RF22_REG_33_HEADER_CONTROL2,0x08); |
shekhar | 17:afadd6b988a2 | 422 | writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00); |
shekhar | 17:afadd6b988a2 | 423 | |
shekhar | 17:afadd6b988a2 | 424 | writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state |
shekhar | 17:afadd6b988a2 | 425 | writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state |
shekhar | 17:afadd6b988a2 | 426 | |
shekhar | 23:a864d57f10c4 | 427 | setFrequency(435.0); |
shekhar | 25:90cdfbadea91 | 428 | |
shekhar | 25:90cdfbadea91 | 429 | i=3; |
shekhar | 25:90cdfbadea91 | 430 | while(i--) |
shekhar | 17:afadd6b988a2 | 431 | if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00) |
shekhar | 17:afadd6b988a2 | 432 | { |
shekhar | 25:90cdfbadea91 | 433 | setFrequency(435.0); |
shekhar | 25:90cdfbadea91 | 434 | if (i==1) |
shekhar | 25:90cdfbadea91 | 435 | {pc_bcn.printf("frequency not set properly\r\n"); |
shekhar | 25:90cdfbadea91 | 436 | reset_rfm(1);} |
shekhar | 17:afadd6b988a2 | 437 | } |
shekhar | 17:afadd6b988a2 | 438 | |
shekhar | 17:afadd6b988a2 | 439 | //set Modem Configuration |
shekhar | 17:afadd6b988a2 | 440 | writereg(RF22_REG_58,0x80); |
shekhar | 17:afadd6b988a2 | 441 | |
azaddevarm | 26:e5d6c0cffa82 | 442 | //Set Data rate - same for both long and short beacon |
azaddevarm | 26:e5d6c0cffa82 | 443 | |
azaddevarm | 26:e5d6c0cffa82 | 444 | writereg(RF22_REG_6E_TX_DATA_RATE,0x0A); |
azaddevarm | 26:e5d6c0cffa82 | 445 | writereg(RF22_REG_6F_TX_DATA_RATE,0x7D);//1280bps |
azaddevarm | 26:e5d6c0cffa82 | 446 | |
shekhar | 17:afadd6b988a2 | 447 | |
shekhar | 17:afadd6b988a2 | 448 | writereg(RF22_REG_70_MODULATION_CONTROL1,0x20); |
shekhar | 17:afadd6b988a2 | 449 | writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21 |
shekhar | 17:afadd6b988a2 | 450 | |
shekhar | 17:afadd6b988a2 | 451 | //set tx power |
shekhar | 17:afadd6b988a2 | 452 | writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm |
shekhar | 17:afadd6b988a2 | 453 | |
shekhar | 17:afadd6b988a2 | 454 | //TX_packet_length written later |
shekhar | 25:90cdfbadea91 | 455 | ERROR_CHECK = 0; |
shekhar | 17:afadd6b988a2 | 456 | } |
shekhar | 17:afadd6b988a2 | 457 | bool Check_ACK_RECEIVED() |
shekhar | 17:afadd6b988a2 | 458 | { |
shekhar | 17:afadd6b988a2 | 459 | if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04) |
shekhar | 17:afadd6b988a2 | 460 | { |
shekhar | 17:afadd6b988a2 | 461 | printf("Packet sent: ACK received\r\n"); |
shekhar | 17:afadd6b988a2 | 462 | return 1; |
shekhar | 17:afadd6b988a2 | 463 | } |
shekhar | 17:afadd6b988a2 | 464 | else |
shekhar | 17:afadd6b988a2 | 465 | { |
shekhar | 24:ca96cddf25d0 | 466 | pc_bcn.printf("Packet not sent\r\n"); |
shekhar | 17:afadd6b988a2 | 467 | return 0; |
shekhar | 17:afadd6b988a2 | 468 | } |
shekhar | 17:afadd6b988a2 | 469 | } |
shekhar | 25:90cdfbadea91 | 470 | int main() |
shekhar | 17:afadd6b988a2 | 471 | { |
shekhar | 17:afadd6b988a2 | 472 | FCTN_BCN_INIT(); |
shekhar | 17:afadd6b988a2 | 473 | |
shekhar | 17:afadd6b988a2 | 474 | loop.attach(&FCTN_BCN_TX_MAIN, 10.0);//in actual case its 30.0 |
shekhar | 17:afadd6b988a2 | 475 | |
shekhar | 17:afadd6b988a2 | 476 | while(1); |
shekhar | 17:afadd6b988a2 | 477 | |
shekhar | 25:90cdfbadea91 | 478 | } |