Seeker of Truth ,
bae wrking isr no bcn
Fork of
TV_BAE_conops1_1_1
by 
Team Fox
Diff: BCN.cpp
- Revision:
- 0:913c9e982740
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/BCN.cpp Tue Nov 03 14:46:51 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);
+
+}*/
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