Re: [Paparazzi-devel] TWOG and gps_ubx

On Tue, Jul 31, 2012 at 12:47 PM, Jeremy Reinertsen <address@hidden> wrote:

I would very much appreciate that David.

For the TWOG I have tried the twinjet.xml airframe file from the examples folder and added the gps_ubx_ucenter module and configured GPS_LED and SYS_TIME_LED.

For Umarim I have tried the umarim_lite_v2.xml airframe file and added the gps_ubx_ucenter module.

Cheers

Jeremy

----- Original Message -----

From: David Conger

To: address@hidden

Cc: address@hidden

Sent: Tuesday, July 31, 2012 7:30 AM

Subject: Re: [Paparazzi-devel] TWOG and gps_ubx_ucenter module

I have one of those GPS and a UmarimLite + TWOG. I can test.

Regards,
David

On Jul 30, 2012, at 1:58 PM, Christophe De Wagter <address@hidden> wrote:

Very weird. We had a MAX5 connected to a TWOG before.

Can you look at the telemetry. The ucenter module reports some data in the debug message on startup. The baud rate it found the GPS reply, the firmware and hardware versions etc. Do you receive that message?

If possible, next would be looking at the rx and tx with the scope. Is anything being sent to your gps?

Can you pastebin your airframe files?

There should be no reason for twog and umarin to behave differently here...

On Jul 30, 2012 1:04 PM, "Jeremy Reinertsen" <address@hidden> wrote:

Thanks Christophe,

Working through your suggestions as follows:

1) Rx-Tx pins swapped = definitely not

2) Uart0 <-> Uart1 swapped = I am using the default "DownLoad GPS" Uart0 connector on the TWOG.

3) Non correct voltage supply to GPS (5v gps or 3.3v ?) = this GPS module has a 3.3V regulator and I am powering with 5V from the TWOG and Umarim.

4) ROTORCRAFT <-> FIXEDWING firmware (configures rate of NAV_SOL to 1Hz on fixedwing that use LLH for position and 4Hz for rotorcraft with ECEF->LTP position)= definitely fixedwing in aircraft file.

5) most UBlox have 2 or more ttl ports, a usb port and even an i2c port. Depending on the GPS board it can be ublox_port1 or ublox_port2 that is routed to the pins (not to confuse with paparazzi_lpc_port0 and port1) The ubx_module can configure the GPS to give its messages on another port with the GPS_PORT_ID define. If not provided, the module assumes GPS_PORT_UART1. But you can define more options: https://github.com/paparazzi/paparazzi/blob/v4.0/sw/airborne/modules/gps/gps_ubx_ucenter.c LINE 267 ->= the MAX-6Q has a single ttl port which is GPS_PORT_UART1 (the default).

6) Other airframe file related problem: e.g. trying to run umarin itg3200 imu code in a twog that has not have it... (imu does stops the boot if not configured correctly)= airframe files are identical other then their board and IMU settings.

I have a Paparazzi GPS and CSGShop GPS for testing and I can connect either to the Umarim and both will work. The Paparazzi GPS (LEA-5H) works on the TWOG but the CSGShop (MAX-6Q) GPS refuses to work on the TWOG. Of course the Paparazzi GPS does not need the gps_ubx_ucenter module and this is why I am suspecting a software error.

Also worth noting that I can fit a backup battery to this GPS module and configure it via ucenter and it will work on the TWOG. But the MAX-6Q will return to its default settings when the battery is removed or goes flat. So I am trying to get it to work without the backup battery.

Has anyone else tried a TWOG and CSGShop (MAX-6Q) GPS?

Cheers

Jeremy

----- Original Message -----

From: Christophe De Wagter

To: address@hidden

Sent: Monday, July 30, 2012 5:18 AM

Subject: Re: [Paparazzi-devel] TWOG and gps_ubx_ucenter module

Dear Jeremy,

The gps_ubx_ucenter module does exactly the same on all LPC21 variants of autopilots, actually even on the STM32's. The only possible differences can be:

1) Rx-Tx pins swapped

2) Uart0 <-> Uart1 swapped

3) Non correct voltage supply to GPS (5v gps or 3.3v ?)

4) ROTORCRAFT <-> FIXEDWING firmware (configures rate of NAV_SOL to 1Hz on fixedwing that use LLH for position and 4Hz for rotorcraft with ECEF->LTP position)

5) most UBlox have 2 or more ttl ports, a usb port and even an i2c port. Depending on the GPS board it can be ublox_port1 or ublox_port2 that is routed to the pins (not to confuse with paparazzi_lpc_port0 and port1) The ubx_module can configure the GPS to give its messages on another port with the GPS_PORT_ID define. If not provided, the module assumes GPS_PORT_UART1. But you can define more options: https://github.com/paparazzi/paparazzi/blob/v4.0/sw/airborne/modules/gps/gps_ubx_ucenter.c LINE 267 ->

6) Other airframe file related problem: e.g. trying to run umarin itg3200 imu code in a twog that has not have it... (imu does stops the boot if not configured correctly)

-Christophe

On Sun, Jul 29, 2012 at 7:41 AM, Jeremy Reinertsen <address@hidden> wrote:

Hi folks,

I am testing a UBLOX MAX-6Q GPS (www.csgshop.com/category.php?id_category=16) and trying to configure it at startup using the gps_ubx_ucenter module. This is working fine on a Umarim Lite V2 autopilot but will not work on a TWOG using exactly the same settings. I have double checked all connections etc and it appears to be a problem with the Paparazzi software.

Any ideas?

Cheers

Jeremy

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From:	limaiem imed
Subject:	Re: [Paparazzi-devel] TWOG and gps_ubx_ucenter module
Date:	Sun, 4 Nov 2012 08:49:08 +0100