- #ARDUINO TIMER INTERRUPT CAUSES CODE TO FAIL WITH GPS HOW TO#
- #ARDUINO TIMER INTERRUPT CAUSES CODE TO FAIL WITH GPS UPDATE#
I noticed that when I use Serial.print it delays to update the variables longitude and latitude (some times take about 30sec to update). So in my code I have a lot of Serial.print() functions. In order to see the angle, longitude, latitude etc. To do that I use a GPS and a digital Compass which gives me the angle of the next waypoint. These days I am working with kostas_koz on a project that records a few waypoints and after that it tries to find each waypoint. And have 90% of it's CPU time still available to solve chess problems It should easily be able to keep up with the GPS, read your sensors and drive a few servos. I think you're underestimating how fast the Arduino is. How did you do that? Can you please give me an example? My GPS module gives pulse every 1s (PPS), I added interrupt for that. If I connect the GPS to pins 2 and 3, and activate the external interrupt (pin 2 or 3, don’t know yet) what is going to happen? Will the CPU interrupt (when the firs pulse arrives) the main program and will jump to GPS routine and wait there till data transfer is completed? So I have no time to lose.ĭoes the buffer (serial port) generate an interrupt? I mean, when the incoming date is stored, can the buffer generate an interrupt?ĭoes the GPS send data all the time? If not, can I start a timer that will interrupt the main program and will jump to GPS routine just before the incoming data arrives? On Arduino board will be connected 4 ultrasonic sensors, one digital compass, tow servo and some leds. Int Accelerometer::update(float* data, unsigned int* times) else if (!f.The problem is that the GPS routine must be running all the time -> using the sparkfun code. * Copies accumulated data and returns the number of new data items. Timer.begin(callback, 20000) // Start callbacks // I have seen various warnings in threads about calling functions and using Serial.print though, oops!Ĭode: /******************** Accelerometer header ********************/
Never seen a crash while not recording to SD. I don't suspect this code of any wrong doing as this always runs while not recording to SD. * Respond to volatile data changes outside the interrupt.Īdjust = adjustment // Un-interrupted copy //Īdjustment = 0 // Clear volatile data //Īccel.adjust(adjust) // Adjust accelerometer timing // Serial.println("*** Synch Event! ***: " + String(ms)) * ms the millisecond adjustment required to accelerometer timing. * Volatile callback function for time synchronisation success.
Volatile int adjustment = 0 // Millisecond shift in GPS to clock timing // Volatile bool volatile_sync = false // PPS time synchronisation is complete // Int offset = time_ms_offset // Copy data: don't allow modification while copying // * the synchronisation offset in milliseconds. * Returns the current synchronisation offset from system time to UTC time. Self->callback(adjust) // Request a shift in accelerometer timing // Int adjust = self->time_ms_offset - offset Uses the latest timestamp to calculate the real time to system time offset. * Static time synchronisation interrupt function.
#ARDUINO TIMER INTERRUPT CAUSES CODE TO FAIL WITH GPS HOW TO#
PinMode(pps_pin, INPUT) // GPS time pulse //ĪttachInterrupt(digitalPinToInterrupt(pps_pin), synchTime, RISING) // Using default priority - don't know how to set to higher priority! // Synchronised = false // Interrupt not yet started - safe! //
GPSModel* GPSModel::self = NULL // Self reference to instance // Volatile bool synchronised // Set within interrupt // Volatile int GPRMC_time // Set outside interrupt // Volatile int time_ms_offset // Set within interrupt // Void (*callback)(int) // Function: synchEvent() of main.
0 kommentar(er)
