Diff: beacon.cpp

Revision:

0:8b0d43fe6c05

diff -r 000000000000 -r 8b0d43fe6c05 beacon.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/beacon.cpp	Wed Sep 10 06:41:21 2014 +0000
@@ -0,0 +1,200 @@
+//switch off the sync!!!!!!!
+//switch off the preamble!!!!!!!
+/*for crc in tx:
+regIrq2(0x28) :
+
+regpacketconfig 1(0x37) :
+set crc detection/calc. on : | 0x10
+crcautoclearoff : | 0x08  
+
+for data whitening : regpacketconfig 1(0x37) :| 0x40
+for 
+
+
+
+*/
+// 6CC000 for 435 MHz
+//set all values as FF for checking on spectrum analyzer
+#include "beacon.h"
+#include "HK.h"
+Serial chavan(USBTX, USBRX);           // tx, rx
+SPI spi(PTD6,PTD7,PTD5);               // mosi, miso, sclk
+DigitalOut cs_bar(D5);                 //slave select or chip select
+//InterruptIn button(p9);
+//#define TIMES 16      
+//Timer t;
+
+/*void interrupt_func()
+{
+    chavan.printf("INTERRUPT_FUNC TRIGGERED\n  wait for 3 secs\n"); 
+    wait(3);
+    
+}*/
+
+extern  ShortBeacy Shortbeacon;
+void writereg(uint8_t reg,uint8_t val)
+{
+    cs_bar = 0;
+    spi.write(reg | 0x80);      
+    spi.write(val);
+    cs_bar = 1;
+}
+uint8_t readreg(uint8_t reg)
+{
+    uint8_t val;
+    cs_bar = 0;
+    spi.write(reg & ~0x80);        
+    val = spi.write(0);
+    cs_bar = 1;
+    return val;
+}
+        
+void FUNC_BEA() {
+    
+    //button.rise(&interrupt_func);         //interrupt enabled ( rising edge of pin 9)
+    printf("\nBeacon function entered\n");
+    wait(0.02);                             //takes 10 ms for POR event + 10ms for safety                 
+    
+    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 = { {0x22}, {0x22, 0x33} , {0x00},{0x00,0x00,0x00}, {0xFE} };
+    */
+    //filling hk data
+    //ShortBeacon Shortbeacon;
+    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]};
+    
+    //mask
+    //uint8_t mask[] = {0x80, 0x40, 0x20,0x10,0x8,0x4,0x2,0x1};
+        
+    for(int i = 0; i < 15 ; i++)
+    {
+        chavan.printf("0x%X\n",(short_beacon[i]));    
+    }
+    
+    spi.format(8,0);                    
+    spi.frequency(10000000);             //10MHz SCLK frequency(its max for rfm69hcw)
+    cs_bar = 1;                              // Chip must be deselected
+    
+    //initialization
+    //Common configuration registers
+    writereg(0x01,0x04);       //sequencer on,standby mode
+    writereg(0x02,0x08);       //packet-mode used  , ook modultion , no dc-shaping
+    writereg(0x03,0x68);       //1200bps datarate
+    writereg(0x04,0x2B);       //1200bps datarate
+    writereg(0x07,0x6C);       //Frequency MSB
+    writereg(0x08,0xC0);       //Frequency MID
+    writereg(0x09,0x00);       //Frequency LSB        ....6C C0 00 for 435 MHZ   
+    
+    //Transmitter registers
+    // RegPaLevel(default +13 dBm)
+    
+    //IRQ and Pin Mapping Registers
+    //no DIO mapped yet
+    //regirq1(0x27): modeready (8th bit) will be checked for interrupts
+    //regIrq2(0x28): fifothresh (5th bit) ,packetsent(3rd bit) will be checked for interrupts
+    
+    //Packet Engine Registers
+    writereg(0x2C,0x00);        //set preamble
+    writereg(0x2D,0x0A);        //set preamble
+    writereg(0x2E,0x80);        //sync off        
+    writereg(0x2F,0x5E);        //sync word 1               
+    writereg(0x37,0x08 | 0x40);// | 0x10);        //packetconfig1, 0x40 for data whitening (only for testing)                
+    writereg(0x38,0x00);        //payload length = 0 ... unlimited payload mode
+    writereg(0x3C,0xB0);         //fifothresh = 48      because we want it cleared once its 40!!!!
+    //Initialization complete
+    
+    //while(chavan.getc() == 't'){
+    //t.start();  
+    //Filling Data into FIFO 64 BYTES : eff.32 bits = 4bytes                  //fread
+    cs_bar = 0; 
+    spi.write(0x80);//fifo write access
+    for(byte_counter=0 ; byte_counter<4; byte_counter++)
+    {    
+        for(int i=7; i>=0  ; i--)
+        {
+            if((short_beacon[byte_counter] & (uint8_t) pow(2.0,i))!=0)
+            //if((short_beacon[byte_counter] & mask[i]) != 0)
+            {
+                spi.write(0xFF);
+                spi.write(0xFF);
+            }
+    else
+            {
+                spi.write(0x00);
+                spi.write(0x00);
+            }
+        }
+    }
+    cs_bar = 1; //cs_bar
+                
+    //Check for fifoThresh
+    printf("\nfor loop executed\n");
+    while((readreg(0x28) & 0x20) != 0x20);                         
+    printf("\nwhile loop executed\n");
+    //Highpower settings
+    writereg(0x11,0x7F);    //RegPalevel (20db)                //~
+    writereg(0x13,0x0F);    //RegOCP
+    writereg(0x5A,0x5D);    //RegTestPa1
+    writereg(0x5C,0x7C);    //RegTestPa2
+        
+    //Set to Tx mode
+    writereg(0x01,0x0C);
+    
+        printf("\npre 2nd while loop\n");
+        //Check for fifoThresh
+        while((readreg(0x28) & 0x20) != 0x00);  
+        printf("\n2nd while loop executed\n");        
+        while(byte_counter!=15){
+            
+        //writing again
+        cs_bar = 0;
+        spi.write(0x80);   
+        for(int i=7; i>=0 ;i--)
+        {
+            if((short_beacon[byte_counter] & (uint8_t) pow(2.0,i))!=0)
+            //if((short_beacon[byte_counter] & mask[i]) != 0)
+        {
+            spi.write(0xFF);
+            spi.write(0xFF);
+        }
+        else
+        {
+            spi.write(0x00);
+            spi.write(0x00);
+        }
+        }
+        cs_bar = 1;
+        byte_counter++;
+                       
+        //Check for fifoThresh
+        while((readreg(0x28) & 0x20) != 0x00);
+    }
+    printf("\n3rd big while loop executed\n");
+    //wait for packet sent bit to fire
+    while((readreg(0x28) & 0x08) != 0x08);
+    printf("\n4th while loop executed\n");
+    //chavan.printf("packet sent!!! \n");    
+    
+    //Switch back to Standby Mode
+    writereg(0x01,0x04);
+    
+    //Lowpowermode
+    writereg(0x11,0x9F);    //RegPalevel (13db)
+    writereg(0x13,0x1A);    //RegOCP
+    writereg(0x5A,0x55);    //RegTestPa1(setting PA_BOOST on RFIO)
+    writereg(0x5C,0x70);    //RegTestPa2(setting PA_BOOST on RFIO)
+    
+    //wait for modeready
+    while((readreg(0x27)&0x80)!=0x80);
+    
+    //t.stop();
+    //chavan.printf(" time taken to init + transmit = %f \n", t.read()) ;
+    //}
+printf("\nBeacon function exiting\n");
+}