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Re: [Paparazzi-devel] Arduimu basic airstart enabled or not?

From: Leandro Chelini
Subject: Re: [Paparazzi-devel] Arduimu basic airstart enabled or not?
Date: Fri, 20 May 2011 14:41:38 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110424 Thunderbird/3.1.10

Hi Chris

We fly with ENABLE_AIR_START 1
A quick look at the code. My assumption:
If it is on, ArduIMU will take only the
to offset the values.
Otherwise it will take the average of the firs 400 values to generate an offeset.

I'm not sure about this, but we had many successfully flights with it enabled.


On 20.05.2011 14:14, Chris wrote:
I tried to use the "ins_arduimu_basic" files but after loading the arduimu firmware to the board itself there was no led flashing indicating initialization, only the yellow light was steadily on. Then i compared the older files with the new ones and i found that "Airstart" was enabled where in the older ones it was disabled :

#define ENABLE_AIR_START 1 // 1 if using airstart/groundstart signaling, 0 if not

After disabling it the initialization was performed as usual and the imu was working. I can't say if the IMU was working with airstart set to 1 despite the fact that there was no
evidence of initialization since i forgot to check.
The IMU could be operational and just the leds did not flash, that's why i am asking.
Is  this the correct behavior when Airstart is enabled?
Should airstart be enabled to start with?

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