LPC1769 supplying

lpcware — Thu, 16 Jun 2016 01:21:35 GMT

Content originally posted in LPCWare by Lumos on Sat Dec 08 08:25:17 MST 2012
Hello,
I would like to ask, how is needed to supply LPC1769 board with extracted LPClink?
There are 2 pins for powering - Vin (5V) and Vout (3V3).
According my understanding, when LPClink is connected, voltage from USB is connected to Vin, and also to voltage regulator on LPClink side. 3,3V from regulator is supplying LPC1769, and can be used from Vout pin.
But in case LPClink is extracted, connecting of 5V to Vin pin has no effect and board has to be powered by connecting of Vout pin to 3,3V.
Is my understanding correct?

And in case LPC link is extracted, how is possible to program and debug target board?

Thank you

Re: LPC1769 supplying

lpcware — Thu, 16 Jun 2016 01:21:36 GMT

Content originally posted in LPCWare by cfb on Sat Dec 08 16:33:41 MST 2012
After you have separated the LPC-Link board from the MCU board you could solder an 8-pin pinheader to each board (where they were split from each other) and reconnect them with a cable.

Alternatively you can both power and program the MCU board via UART0 using a RS232 / USB adapter board. A few months ago I posted a message on our Astrobe forum with information on how to set this up when using Astrobe to develop LPC1769 software:

http://www.astrobe.com/forum/viewtopic.php?f=7&t=200

You can use a similar approach if you are using the LPCXpresso IDE or other development tool. Just configure it to generate a HEX format file for your executable and then use FlashMagic to upload it to your MCU:

http://www.flashmagictool.com

topic LPC1769 supplying in LPCXpresso IDE

LPC1769 supplying

Re: LPC1769 supplying