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FINAL rfm22 code for BAE
Revision 0:9c23dd0ffbeb, committed 2014-12-26
- Comitter:
- shekhar
- Date:
- Fri Dec 26 10:03:13 2014 +0000
- Commit message:
- FINAL RFM22 BEACON code for BAE
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/beacon.cpp Fri Dec 26 10:03:13 2014 +0000 @@ -0,0 +1,201 @@ +#include "beacon.h" +#include "HK.h" +Serial chavan(USBTX, USBRX); // tx, rx +SPI spi(PTD6,PTD7,PTD5); // mosi, miso, sclk +DigitalOut cs(PTC11); //slave select or chip select + +extern ShortBeacy Shortbeacon; + +void writereg(uint8_t reg,uint8_t val) +{ + cs = 0;__disable_irq();spi.write(reg | 0x80);spi.write(val);__enable_irq();cs = 1; +} +uint8_t readreg(uint8_t reg) +{ + int val;cs = 0;__disable_irq();spi.write(reg & ~0x80);val = spi.write(0);__enable_irq();cs = 1;return val; +} +void clearTxBuf() +{ + writereg(RF22_REG_08_OPERATING_MODE2,0x01); + writereg(RF22_REG_08_OPERATING_MODE2,0x00); +} +void clearRxBuf() +{ + writereg(RF22_REG_08_OPERATING_MODE2,0x02); + writereg(RF22_REG_08_OPERATING_MODE2,0x00); +} +int setFrequency(float centre,float afcPullInRange) +{ +//freq setting begins + 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; + float integerPart = floor(centre); + float 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() +{ + //reset() + writereg(RF22_REG_07_OPERATING_MODE1,0x80); //sw_reset + wait(1); //takes time to reset + + clearTxBuf(); + clearRxBuf(); + //txfifoalmostempty + writereg(RF22_REG_7D_TX_FIFO_CONTROL2,5); + //rxfifoalmostfull + writereg(RF22_REG_7E_RX_FIFO_CONTROL,20); + //Packet-engine registers + 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 + //&0x77 = diasable packet rx-tx handling + writereg(RF22_REG_32_HEADER_CONTROL1,0x88); //RF22_REG_32_HEADER_CONTROL1, RF22_BCEN_HEADER3 | RF22_HDCH_HEADER3 + writereg(RF22_REG_33_HEADER_CONTROL2,0x42); //RF22_REG_33_HEADER_CONTROL2, RF22_HDLEN_4 | RF22_SYNCLEN_2 + writereg(RF22_REG_34_PREAMBLE_LENGTH,8); //RF22_REG_34_PREAMBLE_LENGTH, nibbles); preamble length = 8; + writereg(RF22_REG_36_SYNC_WORD3,0x2D); //syncword3=2D + writereg(RF22_REG_37_SYNC_WORD2,0xD4); //syncword2=D4 + writereg(RF22_REG_3F_CHECK_HEADER3,0); //RF22_REG_3F_CHECK_HEADER3, RF22_DEFAULT_NODE_ADDRESS + writereg(RF22_REG_3A_TRANSMIT_HEADER3,0xab); //header_to + writereg(RF22_REG_3B_TRANSMIT_HEADER2,0xbc); //header_from + writereg(RF22_REG_3C_TRANSMIT_HEADER1,0xcd); //header_ids + writereg(RF22_REG_3D_TRANSMIT_HEADER0,0xde); //header_flags + writereg(RF22_REG_3F_CHECK_HEADER3,0xab); + writereg(RF22_REG_40_CHECK_HEADER2,0xbc); + writereg(RF22_REG_41_CHECK_HEADER1,0xcd); + writereg(RF22_REG_42_CHECK_HEADER0,0xde); + + //RSSI threshold for clear channel indicator + writereg(RF22_REG_27_RSSI_THRESHOLD,0xA5); //55 for -80dBm, 2D for -100dBm, 7D for -60dBm, A5 for -40dBm, CD for -20 dBm + + writereg(RF22_REG_0B_GPIO_CONFIGURATION0,0x15); // TX state ?? + writereg(RF22_REG_0C_GPIO_CONFIGURATION1,0x12); // RX state ?? + + //interrupts + // spiWrite(RF22_REG_05_INTERRUPT_ENABLE1, RF22_ENTXFFAEM |RF22_ENRXFFAFULL | RF22_ENPKSENT |RF22_ENPKVALID| RF22_ENCRCERROR); + // spiWrite(RF22_REG_06_INTERRUPT_ENABLE2, RF22_ENPREAVAL); + + setFrequency(435.0, 0.05); + + //return !(statusRead() & RF22_FREQERR); + if((readreg(RF22_REG_02_DEVICE_STATUS)& 0x08)!= 0x00) + pc.printf("frequency not set properly\n"); + //frequency set + + //setModemConfig(FSK_Rb2_4Fd36); FSK_Rb2_4Fd36, ///< FSK, No Manchester, Rb = 2.4kbs, Fd = 36kHz + //setmodemregisters + //0x1b, 0x03, 0x41, 0x60, 0x27, 0x52, 0x00, 0x07, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x22, 0x3a = FSK_RB2_4FD36 + //0xc8, 0x03, 0x39, 0x20, 0x68, 0xdc, 0x00, 0x6b, 0x2a, 0x08, 0x2a, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x21, 0x08 = OOK,2.4, 335 + writereg(RF22_REG_1C_IF_FILTER_BANDWIDTH,0x2B); + writereg(RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE,0x03); + writereg(RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE,0x41); + writereg(RF22_REG_21_CLOCK_RECOVERY_OFFSET2,0x60); + writereg(RF22_REG_22_CLOCK_RECOVERY_OFFSET1,0x27); //updated 20 to 25 reg values from excel sheet for 1.2 Khz freq. deviation,fsk + writereg(RF22_REG_23_CLOCK_RECOVERY_OFFSET0,0x52); + writereg(RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1,0x00); + writereg(RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0,0x51); + /*writereg(RF22_REG_2C_OOK_COUNTER_VALUE_1,0x2a); + writereg(RF22_REG_2D_OOK_COUNTER_VALUE_2,0x08);*/ //not required for fsk (OOK counter value) + writereg(RF22_REG_2E_SLICER_PEAK_HOLD,0x1e); //?? + writereg(RF22_REG_58,0x80); + writereg(RF22_REG_69_AGC_OVERRIDE1,0x60); + writereg(RF22_REG_6E_TX_DATA_RATE1,0x09); + writereg(RF22_REG_6F_TX_DATA_RATE0,0xd5); + writereg(RF22_REG_70_MODULATION_CONTROL1,0x2c); + writereg(RF22_REG_71_MODULATION_CONTROL2,0x22);//ook = 0x21 //fsk = 0x22 + writereg(RF22_REG_72_FREQUENCY_DEVIATION,0x02); + //set tx power + writereg(RF22_REG_6D_TX_POWER,0x07); //20dbm + writereg(RF22_REG_3E_PACKET_LENGTH,TX_DATA); //packet length +} +void FUNC_BEA() +{ + printf("\nBeacon function entered\n"); + wait(1); // wait for POR to complete //change the timing later + cs=1; // chip must be deselected + wait(1); //change the time later + spi.format(8,0); + spi.frequency(10000000); //10MHz SCLK + if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08) pc.printf("spi connection valid\n"); + else pc.printf("error in spi connection\n"); + + init(); + + //******** + //button.rise(&interrupt_func); //interrupt enabled ( rising edge of pin 9) + wait(0.02); // pl. update this value or even avoid it!!! + //extract values from short_beacon[] + uint8_t byte_counter = 0; + /*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]}; + + for(int i = 0; i < 15 ; i++) + { + chavan.printf("0x%X\n",(short_beacon[i])); + } + //tx settings begin + //setModeIdle(); + writereg(RF22_REG_07_OPERATING_MODE1,0x01); //ready mode + //fillTxBuf(data, len); + clearTxBuf(); + + //Set to Tx mode + writereg(RF22_REG_07_OPERATING_MODE1,0x09); + + while(byte_counter!=15){ + //Check for fifoThresh + while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20); + //writing again + cs = 0; + spi.write(0xFF); + for(int i=7; i>=0 ;i--) + { + //pc.printf("%d\n",byte_counter); + if((short_beacon[byte_counter] & (uint8_t) pow(2.0,i))!=0) + { + spi.write(0xFF); + spi.write(0xFF); + } + else + { + spi.write(0x00); + spi.write(0x00); + + } + } + cs = 1; + byte_counter++; + + } + //rf22.waitPacketSent(); + while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04);//pc.printf(" chck pkt sent!\n"); + printf("\nBeacon function exiting\n"); + +} \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/beacon.h Fri Dec 26 10:03:13 2014 +0000 @@ -0,0 +1,106 @@ +#include "mbed.h" + +#define TIMES 20 +#define RX_DATA 240 //in bytes +#define TX_DATA 240 //in bytes + +void writereg(uint8_t reg,uint8_t val); +uint8_t readreg(uint8_t reg); +void clearTxBuf(); +void clearRxBuf(); +int setFrequency(float,float); +void init(); +void FUNC_BEA(); + +#define RF22_MAX_MESSAGE_LEN 255 +// These values we set for FIFO thresholds +#define RF22_TXFFAEM_THRESHOLD 4 +#define RF22_RXFFAFULL_THRESHOLD 55 + +// Register names +#define RF22_REG_00_DEVICE_TYPE 0x00 +#define RF22_REG_02_DEVICE_STATUS 0x02 +#define RF22_REG_03_INTERRUPT_STATUS1 0x03 +#define RF22_REG_04_INTERRUPT_STATUS2 0x04 +#define RF22_REG_07_OPERATING_MODE1 0x07 +#define RF22_REG_08_OPERATING_MODE2 0x08 +#define RF22_REG_09_OSCILLATOR_LOAD_CAPACITANCE 0x09 +#define RF22_REG_0B_GPIO_CONFIGURATION0 0x0b +#define RF22_REG_0C_GPIO_CONFIGURATION1 0x0c +#define RF22_REG_0D_GPIO_CONFIGURATION2 0x0d +#define RF22_REG_1C_IF_FILTER_BANDWIDTH 0x1c +#define RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE 0x1f +#define RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE 0x20 +#define RF22_REG_21_CLOCK_RECOVERY_OFFSET2 0x21 +#define RF22_REG_22_CLOCK_RECOVERY_OFFSET1 0x22 +#define RF22_REG_23_CLOCK_RECOVERY_OFFSET0 0x23 +#define RF22_REG_24_CLOCK_RECOVERY_TIMING_LOOP_GAIN1 0x24 +#define RF22_REG_25_CLOCK_RECOVERY_TIMING_LOOP_GAIN0 0x25 +#define RF22_REG_26_RSSI 0x26 +#define RF22_REG_27_RSSI_THRESHOLD 0x27 +#define RF22_REG_28_ANTENNA_DIVERSITY1 0x28 +#define RF22_REG_29_ANTENNA_DIVERSITY2 0x29 +#define RF22_REG_2A_AFC_LIMITER 0x2a +#define RF22_REG_2B_AFC_CORRECTION_READ 0x2b +#define RF22_REG_2C_OOK_COUNTER_VALUE_1 0x2c +#define RF22_REG_2D_OOK_COUNTER_VALUE_2 0x2d +#define RF22_REG_2E_SLICER_PEAK_HOLD 0x2e +#define RF22_REG_30_DATA_ACCESS_CONTROL 0x30 +#define RF22_REG_31_EZMAC_STATUS 0x31 +#define RF22_REG_32_HEADER_CONTROL1 0x32 +#define RF22_REG_33_HEADER_CONTROL2 0x33 +#define RF22_REG_34_PREAMBLE_LENGTH 0x34 +#define RF22_REG_35_PREAMBLE_DETECTION_CONTROL1 0x35 +#define RF22_REG_36_SYNC_WORD3 0x36 +#define RF22_REG_37_SYNC_WORD2 0x37 +#define RF22_REG_38_SYNC_WORD1 0x38 +#define RF22_REG_39_SYNC_WORD0 0x39 +#define RF22_REG_3A_TRANSMIT_HEADER3 0x3a +#define RF22_REG_3B_TRANSMIT_HEADER2 0x3b +#define RF22_REG_3C_TRANSMIT_HEADER1 0x3c +#define RF22_REG_3D_TRANSMIT_HEADER0 0x3d +#define RF22_REG_3E_PACKET_LENGTH 0x3e +#define RF22_REG_3F_CHECK_HEADER3 0x3f +#define RF22_REG_40_CHECK_HEADER2 0x40 +#define RF22_REG_41_CHECK_HEADER1 0x41 +#define RF22_REG_42_CHECK_HEADER0 0x42 +#define RF22_REG_43_HEADER_ENABLE3 0x43 +#define RF22_REG_44_HEADER_ENABLE2 0x44 +#define RF22_REG_45_HEADER_ENABLE1 0x45 +#define RF22_REG_46_HEADER_ENABLE0 0x46 +#define RF22_REG_47_RECEIVED_HEADER3 0x47 +#define RF22_REG_48_RECEIVED_HEADER2 0x48 +#define RF22_REG_49_RECEIVED_HEADER1 0x49 +#define RF22_REG_4A_RECEIVED_HEADER0 0x4a +#define RF22_REG_4B_RECEIVED_PACKET_LENGTH 0x4b +#define RF22_REG_58 0x58 +#define RF22_REG_60_CHANNEL_FILTER_COEFFICIENT_ADDRESS 0x60 +#define RF22_REG_61_CHANNEL_FILTER_COEFFICIENT_VALUE 0x61 +#define RF22_REG_62_CRYSTAL_OSCILLATOR_POR_CONTROL 0x62 +#define RF22_REG_63_RC_OSCILLATOR_COARSE_CALIBRATION 0x63 +#define RF22_REG_64_RC_OSCILLATOR_FINE_CALIBRATION 0x64 +#define RF22_REG_65_LDO_CONTROL_OVERRIDE 0x65 +#define RF22_REG_66_LDO_LEVEL_SETTINGS 0x66 +#define RF22_REG_67_DELTA_SIGMA_ADC_TUNING1 0x67 +#define RF22_REG_68_DELTA_SIGMA_ADC_TUNING2 0x68 +#define RF22_REG_69_AGC_OVERRIDE1 0x69 +#define RF22_REG_6A_AGC_OVERRIDE2 0x6a +#define RF22_REG_6B_GFSK_FIR_FILTER_COEFFICIENT_ADDRESS 0x6b +#define RF22_REG_6C_GFSK_FIR_FILTER_COEFFICIENT_VALUE 0x6c +#define RF22_REG_6D_TX_POWER 0x6d +#define RF22_REG_6E_TX_DATA_RATE1 0x6e +#define RF22_REG_6F_TX_DATA_RATE0 0x6f +#define RF22_REG_70_MODULATION_CONTROL1 0x70 +#define RF22_REG_71_MODULATION_CONTROL2 0x71 +#define RF22_REG_72_FREQUENCY_DEVIATION 0x72 +#define RF22_REG_73_FREQUENCY_OFFSET1 0x73 +#define RF22_REG_74_FREQUENCY_OFFSET2 0x74 +#define RF22_REG_75_FREQUENCY_BAND_SELECT 0x75 +#define RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1 0x76 +#define RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0 0x77 +#define RF22_REG_79_FREQUENCY_HOPPING_CHANNEL_SELECT 0x79 +#define RF22_REG_7A_FREQUENCY_HOPPING_STEP_SIZE 0x7a +#define RF22_REG_7C_TX_FIFO_CONTROL1 0x7c +#define RF22_REG_7D_TX_FIFO_CONTROL2 0x7d +#define RF22_REG_7E_RX_FIFO_CONTROL 0x7e +#define RF22_REG_7F_FIFO_ACCESS 0x7f \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Dec 26 10:03:13 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file