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Re: [Paparazzi-devel] Problems with Serial Communication

From: Jorge Pantoja
Subject: Re: [Paparazzi-devel] Problems with Serial Communication
Date: Thu, 18 Oct 2012 16:10:45 -0500


Thank you for your reply. Here is the diagram that shows how we are connecting the Yapa to the PC. We will make sure that the voltages we are using are the ones you specify. I will get back to you when we have news about this.


On Thu, Oct 18, 2012 at 1:31 AM, Christophe De Wagter <address@hidden> wrote:

It should be easy to connect directly to a computer. Yapa can even connect directly to real rs232 ports. How did you connect? I can not find the attached picture. If you use the Rs232 port that is called UART0. Is R1 mounted? If you use UART1 under the xbee it MUST go to a 3.3v serial port like ftdi cable.

On Oct 18, 2012 12:06 AM, "Jorge Pantoja" <address@hidden> wrote:
Hello everyone,

Has anyone tried to connect the Yapa2 directly to the computer (without the use of Xbees) using the serial port of the computer? We are trying to connect the Yapa2 to the computer through the serial port that is marked on the attached picture. 

On the other hand, I think we have configured the "transparent serial" protocol. Basically all we did is the following on the airframe file:

  <firmware name="fixedwing">
    <subsystem name="telemetry"     type="transparent">
      <configure name="MODEM_BAUD"  value="B57600"/>
      <configure name="MODEM_PORT"  value="UART1"/>

We are not sure if we have configured the "transparent serial" protocol correctly. The problem we are having is that the ground stays black. However, we don't get any errors from the Data Link on the Paparazzi Center.

Best Regards,
Jorge Pantoja
Program Manager/Liaison

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Jorge Pantoja
Program Manager/Liaison
Phone: +593-989458127
e-mail: address@hidden

Attachment: Yapa2 pinout-Serial.png
Description: PNG image

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