stdalone beacon without flowchart

Dependencies:   mbed

Files at this revision

API Documentation at this revision

Comitter:
shekhar
Date:
Tue Jun 16 06:48:18 2015 +0000
Commit message:
Basic Standalone Beacon code: without flowchart implementation.

Changed in this revision

beacon.h Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r 6ee885353677 beacon.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/beacon.h	Tue Jun 16 06:48:18 2015 +0000
@@ -0,0 +1,105 @@
+#include "mbed.h"
+ 
+#define TIMES 20
+#define RX_DATA 364      //in bytes
+#define TX_DATA 49      //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();
+
+#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
diff -r 000000000000 -r 6ee885353677 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Jun 16 06:48:18 2015 +0000
@@ -0,0 +1,240 @@
+#include "beacon.h"
+Serial pc(USBTX, USBRX);          // tx, rx
+SPI spi(D11, D12, D13);              // mosi, miso, sclk
+DigitalOut cs(D10);                //slave select or chip select
+
+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);        //switch_reset
+    wait(1);                    //takes time to reset                                  
+
+    clearTxBuf();                                                             
+    clearRxBuf();                                                             
+    //txfifoalmostempty
+    writereg(RF22_REG_7D_TX_FIFO_CONTROL2,10);
+    //rxfifoalmostfull
+    writereg(RF22_REG_7E_RX_FIFO_CONTROL,20);
+    //Packet-engine registers
+    writereg(RF22_REG_30_DATA_ACCESS_CONTROL,0x06);    //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,4);       //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,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);
+    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_CONTROL2,0x21);//ook = 0x21 //fsk = 0x22
+    writereg(RF22_REG_72_FREQUENCY_DEVIATION,0x50);
+    //set tx power
+    writereg(RF22_REG_6D_TX_POWER,0x07);    //20dbm
+}
+int main()
+{
+    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();
+
+    
+    //init complete
+    pc.printf("init complete.....press t to send\n");
+    
+    
+    //********
+
+while(1)//pc.getc()=='t')
+{ 
+   /*uint8_t data[] = "Hello World!";
+    pc.printf("%d %d %d %d %d %d %d %d %d %d %d %d",data[0],data[1],data[2],data[3],data[4],data[5],data[6],data[7],data[8],data[9],data[10],data[11],data[12]);*/
+    
+    uint8_t data[500];              //starts from 0,1,2,3,4!!!;   
+    int i = 0;                           //for loops
+    int u = 0;                           //universal count for hk array
+    int n=0,bar = 0; 
+    //filling hk data
+/* 1   for(int n=0; n<4; n++)
+        data[n] = 0x55;
+        data[4] = 0x2D;   
+        data[5] = 0xD4; 
+        data[6] = 0xab;
+        data[7] = 0xbc;                
+        data[8] = 0xcd;        
+        data[9] = 0xde;
+        data[10]= 0xa9;        
+    for(int n=11; n<50; n++) 
+        data[n] = 0x5A; 
+    for(int n=50; n<60; n++)
+        data[n] = 0x5A;  
+    for(int n=60; n<75; n++)
+        data[n] = 0xCC;    
+    for(int n=75; n<97; n++)
+        data[n] = 0xBC;
+    for(int n=97; n<110; n++)
+        data[n] = 0xEC;
+    for(int n=110; n<TX_DATA; n++)
+        data[n] = n; */
+    for(int i=0; i<7; i++){
+        data[n++] = 0x49;
+        data[n++] = 0x49;
+        data[n++] = 0x54;
+        data[n++] = 0x4D;
+        data[n++] = 0x53;
+        data[n++] = 0x41;
+        data[n++] = 0x54;
+        }
+    /*for(int n=150; n<180; n++)
+        data[n] = 0xBC; 
+    for(int n=180; n<210; n++)
+        data[n] = 0x6B;
+    for(int n=210; n<330; n++)
+        data[n] = 0x7D; 
+    for(int n=330; n<TX_DATA; n++)
+        data[n] = 0xFF;*/
+
+    //tx settings begin
+
+    //setModeIdle();
+    writereg(RF22_REG_07_OPERATING_MODE1,0x01);        //ready mode
+    //fillTxBuf(data, len);
+    clearTxBuf();          
+    //Filling Data into FIFO for the first time
+    cs = 0;
+        spi.write(0xFF);               //fifo write access
+        for(i=0; i< 20; i++) {                                 //datalen; i++){
+            spi.write(data[i]);
+            //pc.printf("0x%X \n",data[u+i]);
+            }
+        u=i;//check its 64
+        cs = 1; 
+    //Set to Tx mode
+    writereg(RF22_REG_07_OPERATING_MODE1,0x09);
+    uint8_t reg=0x07;
+    pc.printf("reg07 : 0x%X",readreg(reg));
+    //Check for fifoempty Thresh
+    while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20) pc.printf("fifothresh1?\n");
+
+    while(u!=TX_DATA) {
+        if((TX_DATA - u) >= TIMES)
+            bar = TIMES;
+        else
+            bar = (TX_DATA - u);
+
+    //writing again
+        cs = 0;
+        spi.write(0xFF);                   //FIFO write access
+        for(i=0; i<bar; i++){
+            spi.write(data[u + i]);
+            //pc.printf("0x%X \n",data[u+i]);
+            }
+        u = u + i;
+        cs = 1;
+        wait(0.01);
+        //Check for fifoThresh
+        while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x20) != 0x20) pc.printf("fifothresh2?\n");
+    }    
+    //rf22.waitPacketSent();
+    while((readreg(RF22_REG_03_INTERRUPT_STATUS1) & 0x04) != 0x04)pc.printf(" chck pkt sent!\n");     
+    pc.printf(" packet sent ");
+    
+}
+}
\ No newline at end of file
diff -r 000000000000 -r 6ee885353677 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Jun 16 06:48:18 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5
\ No newline at end of file