topic Re: LPC11C14 CAN-Example ? in LPCXpresso IDE

LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:10 GMT

Content originally posted in LPCWare by Ex-Zero on Tue Sep 28 22:45:06 MST 2010
Just working with my first LPC11C14 board and looking for a simple CAN example (Init / RX / TX) with ROM functions. Found a Keil sample, but I'm not sure if it's working without Keil Compiler.
Can anyone confirm that LPCXpresso is working with LPC11C14 and give me a hint where to start?

Thanks,
Zero

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:10 GMT

Content originally posted in LPCWare by CodeRedSupport on Wed Sep 29 05:24:32 MST 2010
The LPCXpresso IDE does contain support for creating projects for and debugging on LPC11C14.

With regards to example code, generally where this is provided for another toolchain it will normally port across to LPCXpresso fairly easily. Simply create a new project within LPCXpresso IDE, then copy the required source files across.

A few things to watch:

[LIST]
[*]Sometimes, depending upon the original project, you may need to produce your own linker script, rather than use the default, managed linker script created automatically by LPCXpresso. Details of how to go about doing this can be found at:
[/LIST]
[INDENT]http://support.code-red-tech.com/CodeRedWiki/OwnLinkScripts
[/INDENT]
[LIST]
[*]There are sometimes slight changes required to sources due to "extensions to the C language" used by source code. A typical example is how packed structures are written. More details at:
[/LIST]
[INDENT]http://support.code-red-tech.com/CodeRedWiki/PackedStructs
[/INDENT]
[LIST]
[*]Some NXP example code targeted at other toolchains (in the past at least) has used an older version of CMSIS than the LPCXpresso CMSIS library projects make use of. This can occasionally mean that slight code changes are required (or you can simply use the older sources provided by the example rather than the LPCXpresso CMSIS library projects). More information on CMSIS in LPCXpresso at:
[/LIST]
[INDENT]http://support.code-red-tech.com/CodeRedWiki/Support4CMSIS
[/INDENT]Regards,
CodeRedSupport

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:11 GMT

Content originally posted in LPCWare by Ex-Zero on Mon Oct 04 05:03:43 MST 2010
First of all thanks for the reply. Although my ported CAN sample is working, I'm not able to debug .
So I decided to switch back to a simple example without CAN to find the problem.

Used LPCXpresso1114_blinky to start with and made just a few changes:

-MCU settings: LPC11C14/301

-Added SysTick and Uart

-Renamed a copy of all .ld scripts

-MCU Linker-Target: "Manage linker script" off, linker script: "LPCXpresso1114_blinky.ld"

-Changed includes in LPCXpresso1114_blinky.ld to new .ld files

-Changed "Memory" of "RamLoc8" (to exclude CAN Ram) in new lpcxpresso1114_blinky_mem.ld:
from

RamLoc8 (rwx) : ORIGIN = 0x10000000, LENGTH = 0x2000 //8k

RamLoc8 (rwx) : ORIGIN = 0x100000B9, LENGTH = 0x1F47 //8k -CAN

Result:
After starting a debug session, LPC-Link is downloading and but doesn't
"Stop on startup at: main" like usual (and enabled in Debug Configurations).
After "Suspend" Debugger stops somewhere in while(1) loop, but obviously parts like Uart and SysTick are not working.

After power cycle everything is working (without debugger), so I think it's a problem with something in Debugger or Debug configuration.

[ATTACH]199[/ATTACH]

Thanks,
Zero

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:12 GMT

Content originally posted in LPCWare by whitecoe on Mon Oct 04 05:20:52 MST 2010
Not tested this out, but I can well imagine that having ORIGIN ad LENGTH for your RamLoc8 region that are not multiples of 4-bytes could well cause problems.

HTH!

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:12 GMT

Content originally posted in LPCWare by Ex-Zero on Mon Oct 04 05:34:25 MST 2010
Good idea, tested this earlier:

RamLoc8 (rwx) : ORIGIN = 0x10000100, LENGTH = 0x1F00 /* 8k */

Same result.

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:13 GMT

Content originally posted in LPCWare by CodeRedSupport on Mon Oct 04 06:01:58 MST 2010
Hi

Can you set the initial breakpoint to stop at ResetISR and then single step from there, to see where it is going wrong?

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:13 GMT

Content originally posted in LPCWare by Ex-Zero on Mon Oct 04 06:23:19 MST 2010
That's my problem, breakpoints don't break. Even if I change to:

Stop on startup at: ResetISR,

no break.

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:14 GMT

Content originally posted in LPCWare by Ex-Zero on Mon Oct 04 06:46:30 MST 2010
Just made a test with LPC1343 and

RamLoc8 (rwx) : ORIGIN = 0x10000100, LENGTH = 0x1F00 /* 8k */

No problems at all. So I think it's a LPC11Cxx ISR Debugger problem.

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:14 GMT

Content originally posted in LPCWare by CodeRedSupport on Mon Oct 04 07:03:48 MST 2010
Can you confirm that it works if you DON'T change the Ram definition.

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:15 GMT

Content originally posted in LPCWare by Ex-Zero on Mon Oct 04 07:20:11 MST 2010
No, whatever I tried, debugging isn't working for LPC11C14 although downloading and running after power cycle is working even with managed linker script.

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:16 GMT

Content originally posted in LPCWare by CodeRedSupport on Mon Oct 04 07:33:53 MST 2010
We haven't heard of any other reports of debugging problem with an LPC11Cxx.

Do you have a custom board? Is the debug correctly configured?

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:16 GMT

Content originally posted in LPCWare by Ex-Zero on Mon Oct 04 09:32:00 MST 2010
Yes, it's a custom board. I've copied nearly everything from one of my 3 different LPC1343 boards (all working).
Of course I've checked everthing obvious like pullups, supply voltage, reset pin, crystal and ISP pin.
Since there are no other problems except debugging I'm quite sure that it's no hardware problem.
My debug connection is done via simple GND / SWDIO /SWCLK connection (also working with several 1768 / 1343 boards).
Didn't change debug configuration from imported sample (attached project).

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:17 GMT

Content originally posted in LPCWare by CodeRedSupport on Mon Oct 04 23:55:19 MST 2010
I have built and downloaded your application to the LPC11C14 board we have here (an IAR board). The application downloads and breaks on main() as expected. I can run/break/single step and view memory/peripherals/registers etc etc. i.e. the debugger works and is fully functional when connected to an LPC11C14.

NXP have also confirmed to us that they have had no problems when debugging an LPC11Cxx part.

Therefore, I can only conclude that you have a problem with your custom board.

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:18 GMT

Content originally posted in LPCWare by Ex-Zero on Tue Oct 05 00:34:54 MST 2010
Thanks for your support, so it's time to throw this board away and redraw / make a new board tomorrow and report the result.

Thanks,
Zero

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:18 GMT

Content originally posted in LPCWare by Ex-Zero on Tue Oct 05 03:18:18 MST 2010
Sorry to say: You're wrong :). My board is working.
And even more sorry to say: I'm wrong, too :mad:.

The winner is:

http://www.flickr.com/photos/58892165@N08/5406195518/

RESET :eek:!!!

As mentioned before my SWD-connector just uses SWCLK, SWDIO and GND. That's not enough for LPC11C14 (and so I think it's the same for all LPC11xx) .
It's necessary to connect Reset (LPCXpresso J4/11) :o. After downloading this 1/4 second reset is important to start debugging.
I've thought a simple 3-wire SWD connection is enough (and it was enough for LPC1343 & LPC1768), but for LPC11C14 a SWD-Reset is indispensable.

Thanks for your help,
Zero

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:19 GMT

Content originally posted in LPCWare by Ex-Zero on Tue Oct 05 22:59:28 MST 2010
Now back to the initial question:

This sample uses LPC11Cxx on-Chip drivers to transmit & echo CAN messages.

Just add a CAN-transceiver & LED and this sample should work.
I've tested it with 11-bit CAN messages from 83 kbit/s to 1000 kbit/s.

[ATTACH]206[/ATTACH]

Note: This sample does not exclude CAN On-Chip RAM address 0x1000 0050 to 0x1000 008B to avoid disabling "Managed Linker Script".

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:19 GMT

Content originally posted in LPCWare by NXP_USA on Wed Oct 06 08:32:46 MST 2010

Quote: Zero
Just working with my first LPC11C14 board and looking for a simple CAN example (Init / RX / TX) with ROM functions. Found a Keil sample, but I'm not sure if it's working without Keil Compiler.
Can anyone confirm that LPCXpresso is working with LPC11C14 and give me a hint where to start?

Thanks,
Zero

Although there is no LPC11C1x LPCXpresso board today, LPCXpresso has been tested with the LPC11C1x products and the LPC-Link debugger works well with other vendors' boards.

I have attached three CAN samples- a very basic one using the CAN peripheral directly, a version using the LPC11C1x on-chip CAN drivers, and an openCAN sample using the on-chip openCAN drivers.

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:20 GMT

Content originally posted in LPCWare by Ex-Zero on Wed Oct 06 19:04:17 MST 2010
Thanks for the reply.Obviously these projects base an the same source I've used (Sample Code Bundle for LPC11Cxx Peripherals using Keil's MDK-ARM):

http://ics.nxp.com/support/documents/microcontrollers/?scope=LPC11C14&sort=date

Note: There's a little typo in canopen_onchip project, so it's not compiling:

Properties -> C/C++ Build -> Tool Settings -> Settings -> MCU C Compiler -> Directories -> Include paths

Quote:
D:/projects/lpcxpresso/samples/lpc11xx/canopen_onchip/cmsis
D:/projects/lpcxpresso/samples/lpc11xx/canopen_onchip/config
D:/projects/lpcxpresso/samples/lpc11xx/canopen_onchip/driver

of course should be relative:

Quote:
../cmsis
../config
../driver

I've also noticed that CAN On-Chip RAM address 0x1000 0050 to 0x1000 008B isn't excluded (still not sure if that could cause problems).

Quote:
Although there is no LPC11C1x LPCXpresso board today...

Does that mean there will be something like that ... tomorrow?
If so, is it to late to add a wish-list?

Thanks,
Zero

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:20 GMT

Content originally posted in LPCWare by DaveNadler on Sun Nov 14 11:21:56 MST 2010

Quote: NXP_USA
Although there is no LPC11C1x LPCXpresso board today, LPCXpresso has been tested with the LPC11C1x products and the LPC-Link debugger works well with other vendors' boards.

Can you provide instructions for using the LPClink
with the "IAR KickStart Kit for LPC11C14" board ?
Hopefully this is pretty straight-forward ?

Thanks in advance,
Best Regards, Dave

Re: LPC11C14 CAN-Example ?

lpcware — Wed, 15 Jun 2016 23:11:21 GMT

Content originally posted in LPCWare by Ex-Zero on Sun Nov 14 11:33:29 MST 2010
Just connect SWCLK, SWDIO, RESET & GND from LPC-Link (J4) :).