Content originally posted in LPCWare by R2D2 on Thu Apr 11 09:30:15 MST 2013
Quote: Gustavo
Is there any consideration to take advice for the first time you power a brand new processor ?
I mean, I just bought the LPC1769 and solder on the PCB.
For instance, does the oscillator may work the first time ?
Could I program the device via SWD for the first time or I should use ISP ?
Other Question:
The chip has 3 points over its surface (Labeled A-B-C in the photo). One of them indicates PIN 1. which one is ? (Information in the datasheet it is not precise...)
Pin 1 mark is the little one, your LPC is soldered in correctly :)
A new LPC is empty, so it's starting in ISP anyway. Then it's working with IRC, so SWD and ISP are both possible. But of course using ISP via FlashMagic is a safer way to start. Just connect a Serial to USB converter and you know if your basic hardware (power supply, pullups...) is working.
If that's not working, your have a hardware problem (or used a wrong schematic):eek: