Forums

Can not reset DSP board

Started by cyan...@liv.ac.uk March 18, 2009
Hi All,

My DSP C6424 EVM board can not reset by pressing RESET or POR( momentary switches) after it was connected to a hardware module in Daughter card port 1 (DC_P1). The hardware module uses some of GPIO pins for data transferring purpose. The GPIO pins I used were all configured to work as GPIO functionality.

However before connected it can reset properly.

Please give some ideas and thanks a lot to you in advance!

C. Yang

_____________________________________
Hello C. Yang,

are any signals from the "Boot and Configuration Pins Group" used as
GPIO on your add-on board? The add-on board probably overwrites the
internal pullup and pulldown resistors on these pins.

Regards,
Adolf Klemenz, D.SignT

At 12:08 17.03.2009 -0400, c...@liv.ac.uk wrote:

>Hi All,
>
>My DSP C6424 EVM board can not reset by pressing RESET or POR( momentary
>switches) after it was connected to a hardware module in Daughter card
>port 1 (DC_P1). The hardware module uses some of GPIO pins for data
>transferring purpose. The GPIO pins I used were all configured to work as
>GPIO functionality.
>
>However before connected it can reset properly.
>
>Please give some ideas and thanks a lot to you in advance!
>
>C. Yang
-------------------------------
D.SignT - Digital Signalprocessing Technology GmbH & Co. KG

Adolf Klemenz

Marktstr. 10
D-47647 Kerken

phone (+49)(0)2833/570-976
fax (+49)(0)2833/3328
email mailto:a...@dsignt.de
web http://www.dsignt.de
-------------------------------

_____________________________________
Hello Adolf,

I don't know if there are any signals from the "Boot and Configuration Pins Group" used as GPIO on add-on board. Actually, I used the following pins on the add-on board:

EM_CS4n_GP[32]
EM_CS5n_GP[32]
RNW_GP[35]
several EM_A_GP and several EM_D_GP pins
(the above all configured as GPIOs)

GROUND and VCC_3V3

No ideas to link these GPIO pins to the boot and configuration pins. Actually I avoided to use pins such as AEAW and AEM, etc.

Is there any other ideas? Thanks!

C. Yang
_______________________
From: Adolf Klemenz [a...@dsignt.de]
Sent: 18 March 2009 08:34
To: Yang, Chunhua; c...
Subject: Re: [c6x] Can not reset DSP board

Hello C. Yang,

are any signals from the "Boot and Configuration Pins Group" used as
GPIO on your add-on board? The add-on board probably overwrites the
internal pullup and pulldown resistors on these pins.

Regards,
Adolf Klemenz, D.SignT

At 12:08 17.03.2009 -0400, c...@liv.ac.uk wrote:

>Hi All,
>
>My DSP C6424 EVM board can not reset by pressing RESET or POR( momentary
>switches) after it was connected to a hardware module in Daughter card
>port 1 (DC_P1). The hardware module uses some of GPIO pins for data
>transferring purpose. The GPIO pins I used were all configured to work as
>GPIO functionality.
>
>However before connected it can reset properly.
>
>Please give some ideas and thanks a lot to you in advance!
>
>C. Yang
-------------------------------
D.SignT - Digital Signalprocessing Technology GmbH & Co. KG

Adolf Klemenz

Marktstr. 10
D-47647 Kerken

phone (+49)(0)2833/570-976
fax (+49)(0)2833/3328
email mailto:a...@dsignt.de
web http://www.dsignt.de
-------------------------------

_____________________________________