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Re: [Paparazzi-devel] Using a serial data-link for Ar.Drone 2

From: Riccardo Paolo Bestetti
Subject: Re: [Paparazzi-devel] Using a serial data-link for Ar.Drone 2
Date: Mon, 8 Aug 2016 12:08:36 +0200

Dear Roland,
Thank you very much for your answer.

I want to use the on-board serial port. It registers as /dev/ttyO3.
I ended up reading the source code and I found the place where the UARTs are defined for the Ar.Drone 2. Apparently, the on-board UART is not defined there.
I'm going to add it and if everything works I'll submit a pull request, and possibly update the Wiki page for the board. A good chance to give back to the project. :)

Can you also confirm that the communication method defined for the telemetry subsystem is also used for the datalink subsystem?

Riccardo Paolo Bestetti

On 08 ago 2016, at 8:42 AM, Roland Meertens <address@hidden> wrote:

Dear Riccardo,

For the uart port, assuming you use a USB device that registers as ttyUSB0, the paparazzi define is UART1.

Kind regards,
Roland Meertens

On Sun, Aug 7, 2016, 20:07 Riccardo Paolo Bestetti <address@hidden> wrote:

First of all, I apologize if this was already addressed either here or on the Wiki, but I could find the information. So, if it has, please point me to it.

I'm trying to set up a communication link between the computer and the Ar.Drone2 to replace the Wi-Fi link. It consists of a wireless radio that simply bi-directionally relays serial data.
On the computer, if I understand correctly, all I have to do is use a USB-serial session (and change the defaults according to my specific hardware configuration) and I should be set for both the telemetry and the datalink.

Now, I see in the airframe configuration files the "telemetry" and "radio_control" subsystems.

For the telemetry, I should be able to set the type to "transparent" and then set the baudrate appropriately (by the way, is the UART port configured for the Ar.Drone2 board? And if it isn't, how can I do that?).
For the radio_control, I shall leave the "datalink" type. What I don't get, is how to tell the subsystem what link to listen to.

I hope you can help me, I'm really lost in the complexity of this mighty piece of software. :)

--- Riccardo Paolo Bestetti

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