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PWM and ALGO updated.. PWM getting generated
Dependencies: FreescaleIAP mbed-rtos mbed
Fork of TFR_BAE_vr1_1working_finally_PWM_CTRLALGO_update by
Diff: BCN.cpp
- Revision:
- 0:7b4c00e3912f
diff -r 000000000000 -r 7b4c00e3912f BCN.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/BCN.cpp Thu Dec 24 19:15:43 2015 +0000 @@ -0,0 +1,403 @@ +#include "BCN.h" +#include <stdio.h> +#include "pin_config.h" + +Serial pc_bcn(USBTX, USBRX); //tx,rx +SPI spi(PIN16, PIN17, PIN15); // mosi, miso, sclk +DigitalOut cs(PIN6); //slave select or chip select +Timer t; +Timer t_i; +Ticker loop; + + +//GLOBAL VARIABLES +uint8_t BCN_INIT_STATUS; +uint8_t BCN_TX_MAIN_STATUS; +uint8_t BCN_TX_STATUS; +uint8_t BCN_TX_EN = 1; //hardcoding for now //check where is this variable toggled?? +uint8_t BCN_FEN = 1; //write this to non-erasable memory. +uint8_t BCN_STANDBY = 0; //hardcoding for now //check where is this variable toggled?? +uint8_t BCN_TS_BUFFER; // For Temperature + + +void P_BCN_INIT() +{ + pc_bcn.printf("P_BCN_INIT\n"); + BCN_INIT_STATUS = 1; + Init_BEACON_HW(); + if (BCN_FEN == 0) + t.start();//Start the timer for RF_Silence + BCN_INIT_STATUS = 0; +} +void P_BCN_FEN() +{ + pc_bcn.printf("P_FEN\n"); + BCN_FEN = 1;//write this value to flash +} +void P_BCN_TX_MAIN() +{ + pc_bcn.printf("P_BCN_TX_MAIN\n"); + BCN_TX_MAIN_STATUS = 1; + + if(BCN_FEN == 1) + { + if(BCN_TX_EN == 1) + { + //Measure and store BCN temperature in BCN_TS_BUFFER + BCN_TS_BUFFER = check_Temperature(); + pc_bcn.printf("\n\ntemperature = %d\n\n",BCN_TS_BUFFER); + //Get BCN_HK data from BCN HW(SPI) //Store BCN_HK data in BCN_HK_BUFFER + if(BCN_STANDBY == 1 ) + { + Set_BCN_TX_STATUS(BCN_TX_STANDBY); + BCN_TX_MAIN_STATUS = 0; + + // break; + } + else + { + //transmit short beacon and long beacon + t_i.start(); + int begin = t_i.read_us(); + SHORT_BCN_TX(); + LONG_BCN_TX(); + t_i.stop(); + int end = t_i.read_us(); + pc_bcn.printf("The time required for short and long is %d seconds\r\n", end-begin); + + if(Check_ACK_RECEIVED() == 1) + { + Set_BCN_TX_STATUS(BCN_TX_SUCCESS); + BCN_TX_MAIN_STATUS = 0; + } + else + { + Set_BCN_TX_STATUS(BCN_TX_FAILURE); + BCN_TX_MAIN_STATUS = 0; + + } + } + } + else + { + Set_BCN_TX_STATUS(BCN_TX_DISABLED); + BCN_TX_MAIN_STATUS = 0; + } + } + else + { + Set_BCN_TX_STATUS(BCN_RF_SILENCE); //Window of RF Silence: None of the Txs should be on. + BCN_TX_MAIN_STATUS = 0; + } +} + +void Set_BCN_TX_STATUS(uint8_t STATUS) +{ + BCN_TX_STATUS = STATUS; +} + +uint8_t check_Temperature() +{ + uint8_t temperature; + writereg(RF22_REG_0F_ADC_CONFIGURATION,0x80); + writereg(RF22_REG_12_Temperature_Sensor_Calibration,0x20); + wait(1); + temperature = readreg(RF22_REG_11_ADC_Value); + temperature = (float)temperature*0.5 - 64; + return temperature; +} + +void SHORT_BCN_TX() +{ + writereg(RF22_REG_6E_TX_DATA_RATE,0x01); + writereg(RF22_REG_6F_TX_DATA_RATE,0x4F);//160bps + writereg(RF22_REG_3E_PACKET_LENGTH,SHORT_TX_DATA); //short packet length + /* + init(); + //init complete + pc_bcn.printf("init complete.....press t to send\n"); + while(pc_bcn.getc()=='t') + { */ + //button.rise(&interrupt_func); //interrupt enabled ( rising edge of pin 9) + wait(0.02); // pl. update this value or even avoid it!!! + int i=0; + //extract values from short_beacon[] + struct Short_beacon + { + uint8_t Voltage[1]; + uint8_t AngularSpeed[2]; + uint8_t SubsystemStatus[1]; + uint8_t Temp[3]; + uint8_t ErrorFlag[1]; + }Shortbeacon = { {0x88}, {0x99, 0xAA} , {0xAA},{0xAA,0xDD,0xEE}, {0x00} }; + + //filling hk data + //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]}; + 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]}; + + //uint8_t short_beacon[15]; +// for(int i = 0;i<15;i++) +// { +// short_beacon[i] = 0xAA; +// } + + //writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode ?? + clearTxBuf(); + //writing data first time + int byte = 0; + cs = 0; + spi.write(0xFF); + pc_bcn.printf("line 151"); + for (int byte_counter = 0; byte_counter <15 ; byte_counter++) + { + for(int j = 3; j >= 0 ; j--) + { + if((short_beacon[byte_counter] & (uint8_t) pow(2.0,(j*2+1)))!= pow(2.0,(j*2+1))) + { + byte=0x00; + } + else + { + byte=0xF0; + } + if((short_beacon[byte_counter] & (uint8_t) pow(2.0,j*2))!= pow(2.0,j*2)) + { + byte=byte | 0x00; + } + else + { + byte=byte | 0x0F; + } + spi.write(byte); + } + } + + cs = 1; + pc_bcn.printf("line 177\n"); + //Set to Tx mode + writereg(RF22_REG_07_OPERATING_MODE1,0x09); + + //Check for fifoThresh + while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20); + //pc_bcn.printf("fifothresh1?\n"); + pc_bcn.printf("line 184\n"); + //rf22.waitPacketSent(); + while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04); + //pc_bcn.printf(" chk pkt sent!\r\n"); + pc_bcn.printf("Short packet sent\r\n"); + + writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode + +} +void LONG_BCN_TX() +{ + writereg(RF22_REG_6E_TX_DATA_RATE,0x04); + writereg(RF22_REG_6F_TX_DATA_RATE,0xEA);//600 bps + writereg(RF22_REG_3E_PACKET_LENGTH,LONG_TX_DATA); //long packet length + wait(0.02); + + + //get long_beacon array + + uint8_t Long_beacon[75]; + for(int i = 0;i<75;i++) + { + Long_beacon[i] = 0xA0; + } + + + + + //setModeIdle(); + writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode + clearTxBuf(); + //writing data first time + cs = 0; + spi.write(0xFF); + for(int i=0; i<60;i++) + { + spi.write(Long_beacon[i]); + } + cs = 1; + + //Set to Tx mode + writereg(RF22_REG_07_OPERATING_MODE1,0x09); + + //Check for fifoThresh + while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20); + + cs = 0; + spi.write(0xFF); + for(int i=60; i<75;i++) + { + spi.write(Long_beacon[i]); + } + cs = 1; + wait(0.01); + //Check for fifoThresh + while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20); + + //Check for packetsent interrupt + while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04); + + pc_bcn.printf("Long packet sent\r\n"); + + writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode +} +void reset_uC() +{ + P_BCN_INIT(); +} +void writereg(uint8_t reg,uint8_t val) +{ + uint8_t count = 0; + for(;;count++) + { + int read_val =0; cs = 0;spi.write(reg | 0x80);spi.write(val);cs = 1; + if(reg != 0x7 && reg != 0x58 && reg != 0xF) + { + read_val = readreg(reg); + if (read_val == val) + { + break; + } + else if(count == 5) + { + reset_uC(), printf("reg = 0x%X\n",reg);break; + } + } + else + break; + } +} +uint8_t readreg(uint8_t reg) +{ + uint8_t val;cs = 0;spi.write(reg & ~0x80);val = spi.write(0);cs = 1;return val; +} +void clearTxBuf() +{ + writereg(RF22_REG_08_OPERATING_MODE2,0x01); + writereg(RF22_REG_08_OPERATING_MODE2,0x00); +} +uint8_t setFrequency(double centre,float afcPullInRange) +{ + uint8_t fbsel = 0x40; + uint8_t afclimiter; + if (centre >= 480.0) { + centre /= 2; + fbsel |= 0x20; + afclimiter = afcPullInRange * 1000000.0 / 1250.0; + } else { + if (afcPullInRange < 0.0 || afcPullInRange > 0.159375) + return false; + afclimiter = afcPullInRange * 1000000.0 / 625.0; + } + centre /= 10.0; + double integerPart = floor(centre); + double fractionalPart = centre - integerPart; + + uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23 + fbsel |= fb; + uint16_t fc = fractionalPart * 64000; + writereg(RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT + writereg(RF22_REG_74_FREQUENCY_OFFSET2, 0); + writereg(RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel); + writereg(RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8); + writereg(RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff); + writereg(RF22_REG_2A_AFC_LIMITER, afclimiter); + return 0; +} + + +void Init_BEACON_HW() +{ + cs=1; // chip must be deselected + spi.format(8,0); + spi.frequency(10000000); //10MHz SCLK + + //should either have a flag for invalid SPI or discard this for actual case or add reset + if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08) + pc_bcn.printf("spi connection valid\r\n"); + else + {pc_bcn.printf("error in spi connection\r\n"); + reset_uC(); + } + + writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset + wait(1); //takes time to reset + + clearTxBuf(); + + writereg(RF22_REG_07_OPERATING_MODE1,0x00); //standby mode + + //txfifoalmostempty + writereg(RF22_REG_7D_TX_FIFO_CONTROL2,30); + + //Packet-engine registers + writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x00); + + writereg(RF22_REG_33_HEADER_CONTROL2,0x08); + writereg(RF22_REG_34_PREAMBLE_LENGTH,0x00); + + writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state + writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state + + setFrequency(435.0,05); + + if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00) + { + //pc_bcn.printf("frequency not set properly\r\n"); + reset_uC(); + } + + //set Modem Configuration + writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0xdf); + writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03); + writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x39); + writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x20); + writereg(RF22_REG_22_CLOCK_RECOVERY_OFFSET1,0x68); //updated 20 to 25 reg values from excel sheet for 1.2 Khz freq. deviation,fsk + writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0xdc); + writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00); + writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x6B); + writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2C); + writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x11); //not required for fsk (OOK counter value) + writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x2A); //?? + writereg(RF22_REG_58,0x80); + writereg(RF22_REG_69_AGC_OVERRIDE1,0x60); + + //Data rate set later + + writereg(RF22_REG_70_MODULATION_CONTROL1,0x20); + writereg(RF22_REG_71_MODULATION_CONTROL2,0x21);//ook = 0x21 + + //set tx power + writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm + + //TX_packet_length written later +} +bool Check_ACK_RECEIVED() +{ + if((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) == 0x04) + { + printf("Packet sent: ACK received\r\n"); + return 1; + } + else + { + pc_bcn.printf("Packet not sent\r\n"); + return 0; + } +} +/*int main() +{ + P_BCN_INIT(); + + loop.attach(&P_BCN_TX_MAIN, 10.0); + + while(t.read() < RF_SILENCE_TIME); + + P_BCN_FEN(); + + while(1); + +}*/ \ No newline at end of file