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cubesat kit MHX demo not working

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cubesat kit MHX demo not working

Postby sorcereral » Mon Mar 16, 2009 6:16 am

I'm trying to run the cubesat kit demo program with the MHX 2400. It seems that it gets into the command mode, but none of the other commands works. If I try to read the MHX responses, I'm getting the first "OK" (the one after typing "mhx"). After that, the echoed commands are wrong characters. I receive correctly the "ERROR" message. The MHX works ok on its development board.
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Re: cubesat kit MHX demo not working

Postby aek » Mon Mar 16, 2009 8:25 am

A 2400? or a 2420?

There is no "ERROR" response when running the Test1 demo program with an MHX2400.

I would suggest reducing (via a non-valitile write to the MHX's configuration options) the transmit power to its minimum value -- that will ensure that the MHX is not resetting when you attempt to transmit with it.

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Re: cubesat kit MHX demo not working

Postby sorcereral » Tue Mar 17, 2009 12:37 am

I am using the MHX 2400. I receive the ERROR message from the MHX as an answer for the configuration command. I added the code for reading these answers.

I followed your advice reducing the transmission power of the MHX. With this setup and with an unmodified version of the Test1 demo it still doesn't work. If I use a breakpoint on the ISRTx1 interrupt and manually continue execution each time it reaches this breakpoint, the MHX works as expected.

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Re: cubesat kit MHX demo not working

Postby sorcereral » Mon Mar 30, 2009 2:51 am

I changed the MHX 2400 with a MHX 2420 and everything worked as supposed.
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