Lpc2000

From: "Thiago Takehara" <thiago@...>
To: <lpc2000@yahoogroups.com>
Sent: Friday, March 10, 2006 11:00 AM
Subject: [lpc2000] Problems on first board


I\ufffdm burning a blinky program on LPC2144 and can\ufffdt make it work, even if I 
can burn it on internal flash. I\ufffdve succesfully tried this code on MCB2140, 
so I thought it would work on my board.

I have made a simple board with LPC2144, 10MHz xtal, MAX232, reset source 
and a good voltage source. I\ufffdve verified all the VDD's, VSS's and verified 
my EINT1's, TRACESYNC's and others pull -up and -downs. My reset source 
maintains low level on reset pin for at least 280ms.

I don't know how to compare my burned code and the original one on my PC, 
because this function on LPC2000 Flash Utility V2.2.3 doesn't work, so I've 
uploaded and downloaded again the same code on my board and on MCB2140 and 
compared both with WinHex, and both was identical. I gave a look on the 
Interrupt Vector's checksum and confirmed it is ok.

It's the first time I burn a code on this new board, and I don't know if I 
have to do anything different at first burn, something like writing a word 
for a specific register / memory position, and haven't find any information 
regarding this issue on Philips' UM10139.

Why can\ufffdt my code run if I can burn it on flash? If someone knows anything 
that can help me, my thanks in advance.


Have you tried JTAG, if your board has the connector on it?

Leon

  ----- Original Message ----- 
  From: Leon Heller 
  To: lpc2000@yahoogroups.com 
  Sent: Friday, March 10, 2006 8:15 AM
  Subject: Re: [lpc2000] Problems on first board


  ----- Original Message ----- 
  From: "Thiago Takehara" <thiago@...>
  To: <lpc2000@yahoogroups.com>
  Sent: Friday, March 10, 2006 11:00 AM
  Subject: [lpc2000] Problems on first board


  I´m burning a blinky program on LPC2144 and can´t make it work, even if I 
  can burn it on internal flash. I´ve succesfully tried this code on MCB2140, 
  so I thought it would work on my board.

  I have made a simple board with LPC2144, 10MHz xtal, MAX232, reset source 
  and a good voltage source. I´ve verified all the VDD's, VSS's and verified 
  my EINT1's, TRACESYNC's and others pull -up and -downs. My reset source 
  maintains low level on reset pin for at least 280ms.

  I don't know how to compare my burned code and the original one on my PC, 
  because this function on LPC2000 Flash Utility V2.2.3 doesn't work, so I've 
  uploaded and downloaded again the same code on my board and on MCB2140 and 
  compared both with WinHex, and both was identical. I gave a look on the 
  Interrupt Vector's checksum and confirmed it is ok.

  It's the first time I burn a code on this new board, and I don't know if I 
  have to do anything different at first burn, something like writing a word 
  for a specific register / memory position, and haven't find any information 
  regarding this issue on Philips' UM10139.

  Why can´t my code run if I can burn it on flash? If someone knows anything 
  that can help me, my thanks in advance.


  Have you tried JTAG, if your board has the connector on it?

  Leon 



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