Diff: main.cpp

Revision:

32:a2472bbe7c92

Parent:

31:2c813f321db7

Child:

33:319cbac3b6eb

--- a/main.cpp	Tue Jul 14 14:58:23 2015 +0000
+++ b/main.cpp	Wed Jul 29 12:14:42 2015 +0000
@@ -1,75 +1,47 @@
 #include "mbed.h"
 #include "lcdadafruit.h"
-//radfta #include "keyreaderadafruit.h"
-//radfta #include "keyreadernull.h"
-// #include "RTclock.h"
-//#include "DateModule.h"
-//#include "TempModule.h"
-//#include "TimeModule.h"
-//#include "TitleModule.h"
-//#include "SyncModule.h"
-//#include "GPSModule.h"
-//#include "LatitudeModule.h"
-//#include "RadioModule.h"
-//#include "MenuManager.h"
 #include "sx1276-hal.h"
 #include "GPS.h"
 #include "main.h"
 #include "debug.h"
-//#include "vt100.h"
 #include "serial_api.h"
+#include "datetime.h"
+#include "time.h"
+#include <string>
 
 
-/* Set this flag to '1' to display debug messages on the console */
-#define DEBUG_MESSAGE   1
 #define USE_MODEM_LORA  1
-
 //#define RF_FREQUENCY                                    868000000 // Hz
 //#define RF_FREQUENCY                                    880030000 
 #define RF_FREQUENCY                                    915000000.0 // Hz
 //#define RF_FREQUENCY                                    413000000.0 // Hz
-#define TX_OUTPUT_POWER                                 20        // 14 dBm
-#define LORA_BANDWIDTH                                  2         // [0: 125 kHz,
-                                                                  //  1: 250 kHz,
-                                                                  //  2: 500 kHz,
-                                                                  //  3: Reserved]
-// #define LORA_SPREADING_FACTOR                        7         // [SF7..SF12]
-#define LORA_SPREADING_FACTOR                           12        // [SF7..SF12]
-// #define LORA_CODINGRATE                              1         // [1: 4/5,
-#define LORA_CODINGRATE                                 2         // [1: 4/5,
-                                                                  //  2: 4/6,
-                                                                  //  3: 4/7,
-                                                                  //  4: 4/8]
-#define LORA_PREAMBLE_LENGTH                            8         // Same for Tx and Rx
-#define LORA_SYMBOL_TIMEOUT                             5         // Symbols
-#define LORA_FIX_LENGTH_PAYLOAD_ON                      false
-#define LORA_FHSS_ENABLED                               false  
-#define LORA_NB_SYMB_HOP                                4     
-#define LORA_IQ_INVERSION_ON                            false
-#define LORA_CRC_ENABLED                                true
+
 
 //#define BUFFER_SIZE                                     64        // Define the payload size here
 
 #if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
-DigitalOut led(LED2);
-//DigitalOut led(LED_RED);
+//DigitalOut led(LED2);
+DigitalOut led(LED_RED);
 #else
 DigitalOut led(LED1);
 #endif
 Serial pc(USBTX, USBRX);
 
 float Frequency = RF_FREQUENCY;
+float distance = -1;
+float r_latitude = 0;
+float r_longitude = 0;
 int TxPower = TX_OUTPUT_POWER;
 int Bandwidth = LORA_BANDWIDTH;
 int SpreadingFactor = LORA_SPREADING_FACTOR;
 int CodingRate = LORA_CODINGRATE;
+struct tm Clock;
 
 /*
  *  Global variables declarations
  */
 typedef RadioState States_t;
 volatile States_t State = LOWPOWER;
-// radfta vt100 ctrl;
 
 SX1276MB1xAS Radio( OnTxDone, OnTxTimeout, OnRxDone, OnRxTimeout, OnRxError, NULL, NULL );
 // for hand wired I2C cI2C(PTC9, PTC8); 
@@ -95,6 +67,7 @@
 int max_pkts = 20;
 int pkt_data[20];
 int per = 0;
+int tx_rate_us = 100000;  // 1 second
 app_e app = APP_NONE;
 bool isMaster = true;
 bool AlwaysMaster = false;
@@ -102,243 +75,51 @@
 bool ackRcvd = true;
 bool rxTimeout = false;
 bool gpsEnabled = true;
+InterruptIn PPS(PTA1); //pps IRQ
+Ticker usec_tick;
+ 
+void tx_pkt() {
+    led = !led;
+     BufferSize=strlen((char *)BufferTx);
+  //   printf("Buffersize = %d\r\n",BufferSize);
+     Radio.Send( BufferTx, BufferSize );
+     //Radio.Rx( RX_TIMEOUT_VALUE / 1  );
+}
   
-char* itoa(int val, int base){
-    
-    static char buf[32] = {0};
-    
-    int i = 30;
-    
-    for(; val && i ; --i, val /= base)
-    
-        buf[i] = "0123456789abcdef"[val % base];
-    
-    return &buf[i+1];
-    
-}    
-
-unsigned int randomSeed(){
-    AnalogIn randIn(A0);  // analog input for random number seed
-    unsigned int rnum = 0;  // int = 4 bytes - 32 bits
-    // build 32 bit random number from the 2 lower bits from 16 analog reads
-    for (int i = 0; i<4;i++){
-        rnum = rnum | ((randIn.read_u16() & 15) << i*4);
-        wait_ms(5);
-    }
-    return rnum;
-}
-
-void configRxTx() {
-
-
-    Radio.SetTxConfig( MODEM_LORA, TxPower, 0, Bandwidth,
-                         SpreadingFactor, CodingRate,
-                         LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
-                         LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP, 
-                         LORA_IQ_INVERSION_ON, 2000000 );
-    
-    Radio.SetRxConfig( MODEM_LORA, Bandwidth, SpreadingFactor,
-                         CodingRate, 0, LORA_PREAMBLE_LENGTH,
-                         LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0,
-                         LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP, 
-                         LORA_IQ_INVERSION_ON, true );
-}
-
-void print_bandwidth()
+void ppsSync()
 {
-    printf("bandwidth: ");
-    switch (((Radio.Read(REG_LR_MODEMCONFIG1) & 0xf0) >> 4)) {
-        case 0: printf("7.8KHz "); break;
-        case 1: printf("10.4KHz "); break;
-        case 2: printf("15.6KHz "); break;
-        case 3: printf("20.8KHz "); break;
-        case 4: printf("31.25KHz "); break;
-        case 5: printf("41.7KHz "); break;
-        case 6: printf("62.5KHz "); break;
-        case 7: printf("125KHz "); break;
-        case 8: printf("250KHz "); break;
-        case 9: printf("500KHz "); break;
-        default: printf("%x ", Radio.Read(REG_LR_MODEMCONFIG1)); break;
-    }
-    //printf("\r\n");     
-}
-
-void print_cr()
-{
-    int cr = (Radio.Read(REG_LR_MODEMCONFIG1) & 0x0f)>>1;
-    printf("coding rate: ");
-    switch (cr)
+    static int pps_count=0;
+ 
+    ++pps_count;
+    if (pps_count == 1)
     {
-        case 1:
-            printf("4/5");
-            break;
-        case 2:
-            printf("4/6");
-            break;
-        case 3:
-            printf("4/7");
-            break;     
-        case 4:
-            printf("4/8");
-            break;                   
-        default:
-            printf("unknown");
-            break;
-    
-    }
-    printf(" ");
-}
-
-void print_power()
-{
-    uint8_t paConfig = 0;
-    uint8_t paDac = 0;
-     
-    paConfig = Radio.Read( REG_PACONFIG );
-    paDac = Radio.Read( REG_PADAC );
-
-    paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | Radio.GetPaSelect( Radio.GetChannel()*1000000);
-    paConfig = ( paConfig & RF_PACONFIG_MAX_POWER_MASK ) | 0x70;
-    printf("channel = %f getpa = %x, paConfig =%x \r\n",Radio.GetChannel(), Radio.GetPaSelect((uint32_t)Radio.GetChannel()*1000000), paConfig );
-    if( ( paConfig & RF_PACONFIG_PASELECT_PABOOST ) == RF_PACONFIG_PASELECT_PABOOST )
-    {
-        if( ( paDac & RF_PADAC_20DBM_ON ) == RF_PADAC_20DBM_ON )
-        {
-            printf("Power: %d dBm ", ( uint8_t )( ( uint16_t )( paConfig) & 0x0f  ) + 5 );
-        }
-        else
-            printf("Power: %d dBm ", ( uint8_t )( ( uint16_t )( paConfig) &0x0f) + 2 );
+        // detach the timer
+        usec_tick.detach();
+        printf("call attach\r\n");
+        //wait_ms(500);
+        usec_tick.attach_us(&tx_pkt, tx_rate_us);
     }
     else
     {
-        printf("Power: %d dBm ", ( uint8_t )( ( uint16_t )( paConfig) & 0x0f ) - 1 );
+        if (pps_count > 10)
+        {
+            pps_count = 1;
+        }
     }
-  
-}
-
-void print_errata()
-{
-    
-        int seqconfig1 = (Radio.Read(REG_SEQCONFIG1));
-        int timer2 = (Radio.Read(REG_TIMER2COEF));
-        printf("seqconfig1 = 0x%02x\r\n", seqconfig1);
-        printf("timer2coef = 0x%02x\r\n", timer2);
-
-}
-void print_status()
-{
-
-    printf("Radio version: 0x%02x Channel: %.1f MHz ", \
-            Radio.Read(REG_VERSION),\
-            Radio.GetChannel()\
-            );
-    print_power();        
-    print_bandwidth(); printf("\r\n");
-    printf("Spreading Factor: %d ",SpreadingFactor);
-    print_cr();
-    if (isMaster)
-        printf("Mode: master ");
-    else
-        printf("Mode: slave ");
-        
- 
-     printf("\r\n");
-     print_errata();
-     printf("\r\n");
- 
-}
-
-
-void OnTxDone( void )
-{
-    Radio.Sleep( );
-    State = TX;
-    pkt_count++;
-
-   
-    //debug_if( DEBUG_MESSAGE, "> OnTxDone\r\n" );
-}
-
-void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
-{
-    Radio.Sleep( );
-    if (pkt_count >= max_pkts)
-    {
-        pkt_count=0;
-    } 
     
-    // mark the rolling avg that a pkt has been received
-    pkt_data[pkt_count]=1;
-    //printf("rx done, pkt_count = %d\r\n", pkt_count);
- 
-    BufferSize = size;
-    int i;
-    for (i=0; i< BUFFER_SIZE; i++)
-        BufferRx[ i ] = '\0';  // clear the buffer
- 
-    memcpy( BufferRx, payload, BufferSize );
-    if (rssi > 100)
-    {
-     rssi *= -1;
-    }
-    RssiValue = rssi;
-    SnrValue = snr;
-    State = RX;
-    rxTimeout = false;
-    if (app == APP_PING)  
-        debug_if( DEBUG_MESSAGE, "> OnRxDone size=%d rssi=%d snr=%d  \r\n", size, rssi, snr );
-  
-}
-
-void OnTxTimeout( void )
-{
-    Radio.Sleep( );
-    State = TX_TIMEOUT;
-    //debug_if( DEBUG_MESSAGE, "> OnTxTimeout\r\n" );
+    //printf("got a pps\r\n");
+    //ShowDateTime();
+   
 }
-
-void OnRxTimeout( void )
-{
-    Radio.Sleep( );
-    int i;
-    if (pkt_count >= max_pkts)
-    {
-        pkt_count=0;
-    } 
-    
-    // mark the rolling avg that a pkt has not been received
-    pkt_data[pkt_count]=2;
- 
-    for (i=0; i< BUFFER_SIZE; i++)
-        BufferRx[ i ] = '\0';  // clear the buffer
-    BufferSize = 0;
-    State = RX_TIMEOUT;
-    rxTimeout = false;
-    // debug_if( DEBUG_MESSAGE, "> OnRxTimeout\r\n" );
-}
-
-void OnRxError( void )
-{
-    Radio.Sleep( );
-    if (pkt_count >= max_pkts)
-    {
-        pkt_count=0;
-    } 
-    
-    // mark the rolling avg that a pkt has not been received
-    pkt_data[pkt_count]=2;
-    State = RX_ERROR;
-    debug_if( DEBUG_MESSAGE, "> OnRxError\r\n" );
-}
-
-
 int main()
 {
   
     int i;
-    // radfta gpsd.setBaud57600();
+    Timer refresh_Timer; //sets up a timer for use in loop; how often do we print GPS info?
+    const int refresh_Time = 1000; //refresh time in ms
+    bool gpsFix=false;
+    gps_setup();
     pc.baud(9600);
-    //pc.baud(57600);
     cI2C.frequency(400000);    // I2C can handle two different frequencies - switch to high speed if asked
     cLCD.clear();
     cLCD.home();
@@ -397,10 +178,55 @@
         pc.printf("Starting GPS App\r\n");
     }
     
- 
+    refresh_Timer.start();  //starts the clock on the timer
+    usec_tick.attach_us(&tx_pkt, tx_rate_us);  // attach a timer to periodically call tx.  this timer will be restarted in ppsSync to synronize timer accross systems
+    PPS.rise(&ppsSync);  // call ppsSync when the PPS irq is detected
+            
     while( 1 )
     {
-        // wait_ms( 50 ); 
+        check_gps();
+        if (refresh_Timer.read_ms() >= refresh_Time) 
+        {
+            // printf("reset timer popped\r\n");
+            if (gpsd.fix) {
+                // got a gps fix
+                if (gpsFix == false)
+                {
+                    // first time fix obtained
+                    gpsFix = true;
+                    // set the rtc with the latest gps time
+
+                    pc.printf("GPS fix obtained on %02d/%02d/20%02d_%02d:%02d:%02d (UTC)\r\n",gpsd.month,gpsd.day,gpsd.year,gpsd.hour,gpsd.minute,gpsd.seconds);
+                    // update rtc with the latest gps time stamp
+                    SetDateTime(gpsd.year+2000,
+                        gpsd.month,
+                        gpsd.day,
+                        gpsd.hour,
+                        gpsd.minute,
+                        gpsd.seconds);
+                }
+#if 0                
+                else
+                {
+                    printf("radfta - ");
+                    ShowDateTime();
+              //    pc.printf("GPS %02d/%02d/20%02d_%02d:%02d:%02d (UTC)\r\n",gpsd.month,gpsd.day,gpsd.year,gpsd.hour,gpsd.minute,gpsd.seconds);
+                }
+#endif
+  
+            }
+            else
+            {
+                gpsFix = false;
+                cLCD.setCursor(0,1);
+                cLCD.printf("No GPS. per:%d      ",per);
+                //pc.printf("Waiting for GPS FIX\r\n");
+              
+            }
+          
+            refresh_Timer.reset();    
+        }
+      
         switch (app) {
             case APP_PING:
                 start_ping_pong();
@@ -413,7 +239,6 @@
                 break;    
             case APP_HELLO:
                 start_hello();
-                wait(0.11);
                 break;
             case APP_CONSOLE:
                 // printf("-chat-> x");