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Lpc2000

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Message

Re: [lpc2000] Re: Strange ISP Problem

2005-01-26 by Aalt Lokhorst

Hello Reggie,


> The level translator i'm using is a prebuilt unit.  It gets it's power
> from the serial port (RTS & DTS) lines I think.  

I think the Philips utility uses DTR to reset the processor and RTS for 
forcing the procssor in 'boot-loader' mode. (You need some extra 
interfacing if you want to use these features) Probably your interface 
cannot work if these lines are toggling their levels.

I have LPC2000 Flash utility V2.20 and it has a checkbox in the lower 
right corner to enable this feature. I don't know what levels it will 
use for the DTR/RTS if you disable it.

I hope this will help you to get into the right direction.


-- 
==============================
Aalt Lokhorst
Schut Geometrische Meettechniek bv
Duinkerkenstraat 21
9723 BN Groningen
P.O. Box 5225
9700 GE Groningen
The Netherlands
Tel: +31-50-5877877
Fax: +31-50-5877899
E-mail: Lokhorst@...
==============================

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