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3D RoboticsPermalink Reply by Chris Anderson on June 5, 2011 at 8:45pm

If your Rx puts out standard PWM it should work. Can you post the output of your radio test in the CLI?

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Permalink Reply by Nigel Conliffe on June 5, 2011 at 11:02pm

I added the following code to the CLI - which dumps each radio channel in turn.

The outputs displayed for each varied between about 1000 and 1800 as I moved the appropriate controls on the Tx. Everything is put away now, so I don't have the active log. Sorry.

Note that this never gates on the GetState() call. Indeed, every time I call GetState() here, it is zero.

My next step (which will be tomorrow night; work is the curse of the amateur helicopterist) is to add code to either the CLI to call GetState or to the mainline to see whether it ever goes non-zero.

void dumpRC() {
SerPrln("Display channels in turn. Press Enter to move to next one");
/*
* Go through channels in order:
* throttle, rudder, aileron, elevator, gear and Aux2
*/
dumpSingleRC(CH_THROTTLE, "Throttle :");
dumpSingleRC(CH_ROLL, "Roll :");
dumpSingleRC(CH_PITCH, "Pitch: ");
dumpSingleRC(CH_RUDDER, "Rudder :");
dumpSingleRC(CH_5, "Gear: ");
dumpSingleRC(CH_6, "AUX 2:");
}

void dumpSingleRC(int channel, char * prompt) {
    int setting;
    int frame;
    SerFlu();
    while (1) {
      setting = APM_RC.InputCh(channel);
      frame = APM_RC.GetState();
      SerPri(frame); SerPri(" ");
      SerPri(prompt);
      SerPrln(setting);
      delay(100);
      if(SerAva() > 0){
          break;
          }
      }
    }

 

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Permalink Reply by Russell B. Sutton on June 5, 2011 at 9:35pm

When in FLY-mode is the PPM Light on on the APM?  I just switched over to spektrum and Turnigy radios from the Jr 8303 8ch FM.  I used the  Jr 790 with my Trex 450 heli.  The 790 doesn't have a crystal right? just a little button?  I had a tough time setting mine up with my Tx radio.  Try another reciever first.    

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Permalink Reply by Nigel Conliffe on June 5, 2011 at 11:05pm

Yeah, the 790 is synthesized.  

I will check the PPM light tomorrow night.

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Permalink Reply by Russell B. Sutton on June 6, 2011 at 12:46am

Check the light on the reciever as well.

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Permalink Reply by Nigel Conliffe on June 6, 2011 at 6:44pm

In Fly mode.

 

PPM light is flashing.

Green LED is solid

Red LED is off (no GPS lock, but the LED on the GPS is solid blue)

 

Jr790 blue LED is on.

 

No response on copter to throttle inputs on transmitter.

 

 

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DeveloperPermalink Reply by Mark Colwell on June 6, 2011 at 7:40pm

I have used same JR radio & Rx for testing & flying for last 2 years, It will work fine, but I don't use ArduCopter-NG it should use same RC library files too. Check your radio setup, do you use throttle cut? It could be causing issues. I have a good setup for fixed wings with all bells a whistles, but not for ArduCopter  Is Fail Safe set up correctly?

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Permalink Reply by Nigel Conliffe on June 7, 2011 at 7:56pm

Making progress here.

 

It's not the radio.  Sorry, chaps.  I found a radio diagnostic and ran it, which worked fine.

 

By adding various print statements, I see that what happens is that the main loop starts, reads the radio, reads the GPS and loops a few times (14 to 20) before stopping printing.

 

So I think that something isn't working right (either because my hardware skills are poor -or- I've misconfigured something in the header file).  Somewhere there's a bit of code that thinks it is waiting for a device to come ready ...

 

Time to start turning off things and seeing where I am going awry.

Got it. 

if I undefine the Magnetometer, then I'm looping successfully.   Now to go figure out what's what.

 

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