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yoyo959 / er9x

Automatically exported from code.google.com/p/er9x
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Garbage PPM on start-up #752

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1.just power up
2./
3./

What is the expected output? What do you see instead?
PPM pin go HI then LOW, 1 sec delay, then send 1 frame reversed and then go 
normal

What version of the product are you using? On what operating system?
all

Please provide any additional information below.
LOGIC that i see 
Red mark at start up do not fit on screen

Original issue reported on code.google.com by redso...@mail.ru on 29 Aug 2014 at 9:43

Attachments:

GoogleCodeExporter commented 9 years ago 
I can't see the initial (red) pulse on my 'scope, it doesn't trigger on it.
Currently, er9x sends the first frame with NEG polarity, then corrects to the 
polarity set in the model setup.
I'll change to sending the first frame with the required polarity, but until 
the model data has been loaded from the EEPROM, I don't know which state (high 
or low) the PPM output should be in.
I'm testing witout any module plugged in, just the 'scope on the PPM signal.

Original comment by michael....@mypostoffice.co.uk on 29 Aug 2014 at 10:36

GoogleCodeExporter commented 9 years ago 
yes it is no module connected
i post initial pulse
also i see that first frame have all chennal = 1500us

Original comment by redso...@mail.ru on 29 Aug 2014 at 4:52

Attachments:

GoogleCodeExporter commented 9 years ago 
first pulse width is 0.2sec

Original comment by redso...@mail.ru on 29 Aug 2014 at 4:55