Hello!
I have a board working with LPC2368 uC, I talked to some NXP representative and he told me that LPC1769 were pin compatible.
The problem is, the board works fine with LPC2368, but when I change to LPC1769 I upload the code with success using Flash Magic, but anything works..even a simple blink LED test, the pins state go crazy.. Nothing works..
Does anybody know if I have to do some extra configuration in uVision4 to work with LPC1769? Or another configuration in Flash Magic?
Waiting for your help!!
After reset, if you have cleared chip or held the pin to force the boot loader, then all GPIO pins should have a weak pull-up.
So you have created a new project for LPC1769, so far so good. Have you added the C:\Keil\ARM\Startup\NXP\LPC17xx\system_LPC17xx.c file in the project (better copy it)? You also need to use the wizard of this file to set your clocks and dividers.
Did you also change the register names since the header of the LPC17xx uses structures to access the registers, I assume you have done that since the code compiles.
The pins of the mcu have an internal pullup that enabled by default and this is probably why you see the led turn on.
Alex