MultiWii 2.1 on ATMEGA2560 (HK board.. wrong pins?)

[skoubri]

Hi to all... first, a BIG THANKS to all developers out there who provide us their work!...

Trying my first multiwii system i bought the HK board (red one) and have spent many hours by reading and reading!


I want to enable BUZZER option and later some other extra features... BUT after many tries i figured out that the code should have problem with pin assignment on ATmega2560...

I really don't have ANY programming knowledge for this chip and i ask for HELP from anyone that can program this thing!!... I found in def.h section that the BUZZER pin assignment goes to pin 32 (if i understood well) which pin on ATmega2560 is GND!... Tried to change to pin 17 and port H but i am not sure...

Any help on how to map right the pins on this chip? Is there any tweaked version for 2560 that matches "perfectly" ?


Thanks in advance!!!

[thebgrian]

I have my buzzer working on pin 32, labeled "Cam Roll", you may have to build a buzzer driver as described here:
viewtopic.php?f=15&t=1491#p20252

Also below is the mapping between the pin names and the actual pin on the chip:

http://arduino.cc/en/Hacking/PinMapping2560

Acoording to it, Digital pin 32 matches chip pin 58.

[skoubri]

Hi thanks for your answer.. real pin 32 on 2560 is GND actually!... Do you have the same board? (HK)

After many searching i managed to make it beep!!!! D8 output on HK Red board goes to 17 actual pin of 2560 so in def.h file the original part is this:

Code: Select all

  #define BUZZERPIN_PINMODE          pinMode (32, OUTPUT);
  #define BUZZERPIN_ON               PORTC |= 1<<5;
  #define BUZZERPIN_OFF              PORTC &= ~(1<<5);

Which i changed to this:

Code: Select all

  #define BUZZERPIN_PINMODE      DDRH |= (1<<5)    ;
  #define BUZZERPIN_ON               PORTH |= (1<<5);
  #define BUZZERPIN_OFF              PORTH &= ~(1<<5);

Pin 17 is in PORTH section and H5 specific port.. by using pinMode and using 17 didn't produce sound... had to use DDRx command... really don't know why as i have no programming skills on this!

Anyone could help if this code is ok except that it is working?!! I think that many functions missing from 2560 HK board due to pin assignments...

[thebgrian]

I checked your board and it has different pins for camera pitch roll and trigger than mine. I have the blue board that HK doesn't sell any more, copy of Crius AIO v1, the pins are different and my previous post doesn't really help in your case
I'm glad that you have it working, unfortunately I'm not familiar with the programming to help with the code. Hopefully someone with experiences will advise...