Guido Ottaviani
A porting of a GPS decoding and presenting program within the mbos RTOS. It is not a definitive application but a study program to test NMEA full decoding library and a first approach to an RTOS. Many thanks to Andrew Levido for his support and his patience on teaching me the RTOS principles from the other side of the Earth. It uses NMEA library by Tim (xtimor@gmail.com) ported by Ken Todotani (http://mbed.org/users/todotani/) on public mbed library (http://mbed.org/users/todotani/programs/GPS_nmeaLib/5yo4h) also available, as original universal C library, on http://nmea.sourceforge.net
Dependencies: mbos Watchdog TextLCD mbed ConfigFile
Diff: Task4LedBlink.cpp
- Revision:
- 2:8917036cbf69
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Task4LedBlink.cpp Tue Jan 31 00:22:58 2012 +0000
@@ -0,0 +1,101 @@
+#include "Task4LedBlink.h"
+
+void LedBlinkTask(void)
+{/**
+ *\brief TASK 4
+ LED 1: Quick blink=NOT fix, Slow blink=fix OK
+ LED 2: blinks proportionally to HDOP
+ LED 3: blinks proportionally to VDOP
+ */
+
+ static int LedCnt1=0;
+ // static int LedCnt2=0;
+ int OnH=0;
+ int OnV=0;
+
+ #define MAX 20
+
+ os.SetTimer(LED_BLINK_TMR, 100, 100);
+
+ while(1)
+ {
+ os.WaitEvent(LED_BLINK_EVT);
+
+ if((info.HDOP>0)&&(info.HDOP<=2))
+ {
+ OnH=2;
+ }
+ else if((info.HDOP>2)&&(info.HDOP<=4))
+ {
+ OnH=4;
+ }
+ else if((info.HDOP>4)&&(info.HDOP<=6))
+ {
+ OnH=6;
+ }
+ else if((info.HDOP>6))
+ {
+ OnH=MAX/2;
+ }
+
+ if((info.VDOP>0)&&(info.VDOP<=2))
+ {
+ OnV=2;
+ }
+ else if((info.VDOP>2)&&(info.VDOP<=4))
+ {
+ OnV=4;
+ }
+ else if((info.VDOP>4)&&(info.VDOP<=6))
+ {
+ OnV=6;
+ }
+ else if((info.VDOP>6))
+ {
+ OnV=MAX/2;
+ }
+
+ if(info.sig == 0)
+ {
+ led1=!led1;
+ led2=0;
+ led3=0;
+ }
+ else
+ {
+ if(LedCnt1<=MAX/2)
+ {
+ LedCnt1++;
+ led1=0;
+ if(LedCnt1<OnH)
+ {
+ led2=!led2;
+ }
+ else
+ {
+ led2=0;
+ }
+
+ if(LedCnt1<OnV)
+ {
+ led3=!led3;
+ }
+ else
+ {
+ led3=0;
+ }
+ }
+ else if((LedCnt1>MAX/2)&&(LedCnt1<=MAX))
+ {
+ LedCnt1++;
+ led1=1;
+ led2=0;
+ led3=0;
+ }
+ else if(LedCnt1>MAX)
+ {
+ LedCnt1=0;
+ }
+ }
+ }
+}
\ No newline at end of file