Lpc2000

----- Original Message ----- 
From: <jstamos111@...>
To: <lpc2000@yahoogroups.com>
Sent: Thursday, April 20, 2006 8:09 PM
Subject: [lpc2000] ISP Problems


> Hey All,
>
> I\'m having trouble getting the ISP to work with the Philips Flash Utility 
> for a board I made that uses the LPC2106 processor.  I\'ve also tried 
> using hyperterminal and sending \'?\', but get no response.
>
> I\'ve connected the UART0 send and recv to an inverter and then to a 
> max233.  Anyone know if this is right?  Originally I did not have the 
> inverter, but I noticed that the max233 inverts its outputs.
>

You don't need the inverter, just connect the MAX233 to the LPC2106.


> I\'m also wondering if perhaps I\'m not holding the proper buttons down. 
> I have two buttons that when pressed pull their respective pins low on the 
> LPC processor.  The buttons are on the ~RST and P0.14 pins.  When I go to 
> use the flash utility or a terminal I know I hit the reset button, do I 
> also need to hit the P0.14 button.  Do I hold these down when I go to read 
> the device ID or when I start sending the question marks?

I just used a jumper for P0.14 on my board connecting it to ground, and a 
pullup resistor.

Leon 

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