topic Re: Custom LPC1343 board in LPCXpresso IDE

Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:02 GMT

Content originally posted in LPCWare by bobi-one on Fri Apr 08 13:10:36 MST 2011
Hi, my custom lpc1343 which I've designed ,just arived , and after the assembly i started testing it. Every thing like comunicating with lpc link and uploading examples like blinky was OK. After that i noticed that the same blinky project blinks a little faster than the separated lpc1343 lpcxpresso.

Now I am wondering if I've put not the wright quartz. I am using this 16MHz
http://home.comet.bg/datasheets/Quartz&ceramic%20resonators/XG(6x3.5).pdf
with two 18p Caps.
I don't have oscilloscope, and need a way to verify that my board is working like the original lpcxpresso.
Please don't judge me that I'm so MCU incompetent :)

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:02 GMT

Content originally posted in LPCWare by Luis Digital on Fri Apr 08 13:27:47 MST 2011
Hi,

The LPCXpresso crystal is 12 MHz, that explains the "problem ".

I like to see some photos of your PCBs, if possible, just to feed the eyes. :)

Thank you.

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:03 GMT

Content originally posted in LPCWare by larryvc on Fri Apr 08 13:33:20 MST 2011
I would like to see your design as well.

Larry

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:04 GMT

Content originally posted in LPCWare by bobi-one on Fri Apr 08 14:28:26 MST 2011
hmm, so what kind of change i need to do to my code in order to run with the speeds of the lpcxpresso( because i dont have another quartz at the moment)

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:04 GMT

Content originally posted in LPCWare by Luis Digital on Fri Apr 08 15:01:20 MST 2011
See:
[B]LPC1114 changing crystal frequencies

[/B]What about photos? :p

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:05 GMT

Content originally posted in LPCWare by Ex-Zero on Fri Apr 08 15:22:11 MST 2011

Quote: bobi-one
hmm, so what kind of change i need to do to my code in order to run with the speeds of the lpcxpresso( because i dont have another quartz at the moment)

As far as I remember 3*16 is nearly the same as 4*12 :eek:

It's not forbidden to use another crystal :)

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:05 GMT

Content originally posted in LPCWare by Luis Digital on Fri Apr 08 15:31:24 MST 2011
@Zero, He is using an LPC1343, I just put the link above for reference.

@bobi-one, See also "system_LPC13xx.c" file to change some constants, such as: "__XTAL".

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:06 GMT

Content originally posted in LPCWare by bobi-one on Sat Apr 09 04:50:01 MST 2011
Here are some photos of my board,it's messy .. ugly wires and kapton, but is working fine :D, the extra pull down is for the SWO, I've soldered this temporary solution till finding out why my touch screen controller doesn't work without it.
If somebody is interested I can send you my board files

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:07 GMT

Content originally posted in LPCWare by larryvc on Sat Apr 09 11:28:38 MST 2011

Quote: bobi-one
Here are some photos of my board,it's messy .. ugly wires and kapton, but is working fine :D

That's not messy .. ugly, you are an artista bobi-one.:D

I could not quite make out the part number of the chip in the bottom right corner of the board. What is it for? :confused:

Larry

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:07 GMT

Content originally posted in LPCWare by OXO on Sat Apr 09 12:40:38 MST 2011

Quote: larryvc
That's not messy .. ugly, you are an artista bobi-one.:D

I could not quite make out the part number of the chip in the bottom right corner of the board. What is it for? :confused:

Larry

p.s. I edited post # 3

You need new spectacles.. :D

It's an ADS7843 touch screen controller !

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:08 GMT

Content originally posted in LPCWare by larryvc on Sat Apr 09 12:46:43 MST 2011

Quote: OXO
You need new spectacles.. :D

It's an ADS7843 touch screen controller !

Thank you very much OXO.:o:D

Actually I have a pair on order, they will be ready for pickup on Monday.:)

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:08 GMT

Content originally posted in LPCWare by larryvc on Sat Apr 09 14:03:58 MST 2011

Quote: Luis Digital
...
I like to see some photos of your PCBs, if possible,[B] [I]just to feed the eyes[/I][/B]. :)

Maybe this is how Luis keeps his eyesight from failing.:)

It's the weekend again!

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:09 GMT

Content originally posted in LPCWare by Luis Digital on Sat Apr 09 15:25:12 MST 2011

Quote: larryvc
Thank you very much OXO.:o:D

Actually I have a pair on order, they will be ready for pickup on Monday.:)

I thought for a moment that you had PCBs for Monday. :)

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:09 GMT

Content originally posted in LPCWare by larryvc on Sat Apr 09 16:36:18 MST 2011

Quote: Luis Digital
I thought for a moment that you had PCBs for Monday. :)

Pair of glasses, spectacles, etc...:)

Quote: bobi-one
If somebody is interested I can send you my board files

I'm interested. larryvcnxp at hotmail dot com or attach them here.

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:10 GMT

Content originally posted in LPCWare by Luis Digital on Sat Apr 09 20:15:26 MST 2011
http://http://www.youtube.com/watch?v=tW6P3xxuIMQ&NR=1Bobi-one gotcha: SURPRISE!:D

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:11 GMT

Content originally posted in LPCWare by larryvc on Sat Apr 09 23:27:17 MST 2011
I want to know what the second picture in this video is:;)

bobi-one is an artist take 10

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:11 GMT

Content originally posted in LPCWare by bobi-one on Sun Apr 10 00:29:12 MST 2011
soon I'll post updated paint demo , it will be more clear what i was trying to paint :D

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:12 GMT

Content originally posted in LPCWare by larryvc on Sun Apr 10 00:37:39 MST 2011

Quote: bobi-one
soon I'll post updated paint demo , it will be more clear what i was trying to paint :D

The first picture looked like a birthday cake, the second picture looked like someone bending over to blow out the candles!:D

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:12 GMT

Content originally posted in LPCWare by bobi-one on Sun Apr 10 02:27:32 MST 2011

Quote: larryvc

Take a look at the second half of post #14 please.

I've just find out about couple of mistakes in the design which I need to take care before sharing it all :D

Re: Custom LPC1343 board

lpcware — Wed, 15 Jun 2016 22:43:13 GMT

Content originally posted in LPCWare by OXO on Sun Apr 10 13:24:38 MST 2011
Will this one do for you? ;)

[IMG]http://imgs.xkcd.com/comics/circuit_diagram.png[/IMG]