topic Re: Cant program LPC1769 in LPCXpresso IDE

Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:49 GMT

Content originally posted in LPCWare by nkarakotas on Fri May 13 02:20:52 MST 2011
Hi,

I accidently programmed the flash with CRP1 and now I cant debug. I tried to go into ISP mode but I still cant flash erase it via LPC link. Do I have to erase it via flash magic?
The problem is im using embedded artists board and it doesnt have a rs232 connected to uart#0! I thought to use embeded artists rs232 converter by unlinking the j51 connector and connecting to rxd,txd of uart#0.

Does anyone know how to hook it up via an external adaptor?

Regards,
Nick

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:50 GMT

Content originally posted in LPCWare by Ex-Zero on Fri May 13 02:28:52 MST 2011

Quote: nkarakotas
Hi,

I accidently programmed the flash with CRP1 and now I cant debug. I tried to go into ISP mode but I still cant flash erase it via LPC link. Do I have to erase it via flash magic?
The problem is im using embedded artists board and it doesnt have a rs232 connected to uart#0! I thought to use embeded artists rs232 converter by unlinking the j51 connector and connecting to rxd,txd of uart#0.

Does anyone know how to hook it up via an external adaptor?

Regards,
Nick

With CRP1 you should be able to switch to ISP and use LPC-Link again. However, sometimes this doesn't work.
If you are sure that this fails, you have to use FlashMagic.

See:

http://support.code-red-tech.com/CodeRedWiki/DebugAccessChip

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:51 GMT

Content originally posted in LPCWare by nkarakotas on Fri May 13 02:47:38 MST 2011
Is there any led indication on the xpresso board that it has gone into ISP? When I try to go into ISP I see the two ethernet leds flashing does this always happen because they are connected to the physical layer?

Regards,
Nick

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:51 GMT

Content originally posted in LPCWare by Ex-Zero on Fri May 13 02:55:11 MST 2011

Quote: nkarakotas
When I try to go into ISP I see the two ethernet leds flashing does this always happen because they are connected to the physical layer?
Regards,
Nick

Right, they just show you connect & traffic (=ethernet).
There's no LED for ISP, but LED2 is glowing. Grounding P2.10 and reset (or power cycle) is switching to ISP very reliable.

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:52 GMT

Content originally posted in LPCWare by nkarakotas on Fri May 13 03:04:11 MST 2011
I dont see led2 glowing. When I press the button SW3 on EA board P2.10 goes low. Im wondering if its not going into ISP? :confused:

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:52 GMT

Content originally posted in LPCWare by Ex-Zero on Fri May 13 03:35:13 MST 2011

Quote: nkarakotas
I dont see led2 glowing. When I press the button SW3 on EA board P2.10 goes low. Im wondering if its not going into ISP? :confused:

Sorry, i don't use an EA BaseBoard and don't know what SW3 is doing.

But you can use LPCXpresso without BaseBoard: just disconnect USB, connect P2.10 with Ground and reconnect USB again to start ISP.

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:53 GMT

Content originally posted in LPCWare by nkarakotas on Fri May 13 03:45:20 MST 2011
I got it led2 to glow the way you told me, there has to a wrong pin configuration pin on my EA board. I will try to hook an external adaptor to flash it with flashmagic as it cannot be done via eclipse it reports: Failed on connect: Em(02) MEM-AP not selected.

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:53 GMT

Content originally posted in LPCWare by nkarakotas on Fri May 13 04:06:55 MST 2011
Are RXD0 and TXD0 enough for ISP through RS232? So all I need to do is connect PO.2 /TXD0 and PO.3/RXDO to the adaptor?

Thanks for your time.

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:54 GMT

Content originally posted in LPCWare by Ex-Zero on Fri May 13 04:12:15 MST 2011
Yes, that's enough (and GND, of course) :)

Re: Cant program LPC1769

lpcware — Wed, 15 Jun 2016 23:43:55 GMT

Content originally posted in LPCWare by nkarakotas on Fri May 13 05:57:15 MST 2011
Hooray,

I erased all the flash via ISP. Back to development again. :)
I appreciate your help.

Regards,
Nick