LPCXpresso IDE中的主题 Link2 Debugger/Emulator Not Found

Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:42 GMT

Content originally posted in LPCWare by drnow on Sun Nov 23 16:04:49 MST 2014
I recently purchased an LPCXpresso54102 board that has an integrated Link2 debug probe. However, I have been unable to program and debug the board using the Link2 probe for some reason. Steps so far with my Windows 8.1 machine include downloading and installing the latest versions of LPCXpresso and LPCOpen, and then importing and building a simple project, 'periph_blinky'. However, when I reach the "Debug" step in the process, the following window pops up:

Connect to emulator: LPC-Link(WinUSB) or RDB-Link
LPC-Link (WinUSB) or RDB-Link not found.
This could be because it is disconnected, not powered, or already in use

As far as I can tell, the Link2 debug has been connected, and a driver for it has been installed. For example, in the computers Device Manager under Ports, there is a device "LPC-LinkII UCom Port (COM3)". This device comes and goes in the Device Manager window depending on whether the 54102 board is plugged in. I have uninstalled and reinstalled the driver for this device, as well as tried a different USB cable.

Any suggestions?

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:43 GMT

Content originally posted in LPCWare by lpcxpresso-support on Mon Nov 24 00:06:37 MST 2014
For some reason, the debugger Launch configurtion has been configured to use an LPC-Link1, not a Link2. The simplest things is to delete the launch configuration and then press the Debug button on the Quickstart panel to reacreate it and start a debug session:
http://www.lpcware.com/content/faq/lpcxpresso/launch-configuration-menu

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:44 GMT

Content originally posted in LPCWare by drnow on Mon Nov 24 07:35:59 MST 2014
Support,

Thanks for your reply. The good news is, it worked once. The bad news is, I cannot get the debugger to work a second time.

I followed your suggestion about deleting the launch configuration. After the Debug button was pressed, oddly a Windows Firewall warning came on screen. Clicking thru resulted in the debugger eventually connecting to the IDE and the target, and I was able to debug the program.

However, I then tried modifying the code (one line). I recompiled this modified program without problems, but when attempting to debug it, I ran into an error. I don't have that the details of that error. I then re-tried your suggestion of deleting the launch configuration. I got the following error messages:

Error in final launch sequence
Reason:
Error in final launch sequence

Details:
Error: Error reported by server (redlinkserv.exe)
RedlinkAPI: Invalid index
CMSIS-DAP has been terminated and will be restarted
Please restart your debug session
If the problem recurs, please power cycle your debug probe and restart LPCXpresso

I then restarted LPCXpresso, and power cycled the board, and debugged the program again. I was given the choice to Connect to emulator: NXP LPC5410x (master) and selected the only choice, named LPC-Link-II CMSIS-DAP. Clicking thru, I again got the above error messages.

Suggestions?

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:44 GMT

Content originally posted in LPCWare by lpcxpresso-support on Mon Nov 24 07:49:00 MST 2014
A couple of thoughts.

1. You have to terminate a debug session before starting another. Unfortunately, with CMSIS-DAP connections we can't detect this (like we can for the 'Redlink' version of LPC-Link2), so you have to remember to do this at the end of each debug session.
2. If you run into this problem, you can kill the Redlink server. Press the Red Link icon on the main toolbar, and in the Redlink console view that appears, press the Kill button

However, I would recommend using Redlink firmware instead of CMSIS-DAP. To do this, just remove 'Link DFU' jumper between the 2 USB connectors and unplug/replug. LPCXpresso will now boot the Redlink firmware next time you start a debug session.
http://www.lpcware.com/content/faq/lpcxpresso/lpc-link2-support

BTW: There is no need to delete the launch configuration again. I just recommended this as a quick way to reset it to pick up your LPC-Link2.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:45 GMT

Content originally posted in LPCWare by drnow on Mon Nov 24 10:00:53 MST 2014
Support,
I'm gradually making progress with the debugger in LPCXpresso IDE. Using the periph-blinky program from LPCOne, I can get the debugger to run the program. However, in the left lower corner of the IDE the phrase "Stalled on bus operation" flashes on and off.

When I change the flashing rate to 5 hz (from the 10 initially in the program) the debugger/program does not run, and the "Stalled on bus operation" in the left lower corner stays on continuously, without flashing.

Why can't the debugger work if the rate is reduced to 5 hz?

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:46 GMT

Content originally posted in LPCWare by lpcxpresso-support on Mon Nov 24 11:11:00 MST 2014
"Stalled on bus operation" means that the debugger has spotted that the target has gone to sleep (WFI). If the message is on constantly, it means the target is permanently asleep. The debugger continue to work perfectly. Why do you think it does not work?

The reason why this application does not produce the expected results when trying to reduce the tick rate to 5Hz is because it overflows the Systick Timer reload Mask (24bits). 100Mhz/10 does not overflow, but 100Mhz/5 does.There is a check for this in the SystickConfig call, which returns an error code (which is not being checked for in this simple example), so the Systick is never setup and so the application sits in the while(1) WFI ; loop...

Please try to use the debugger and step through the code, and you will then get a better understanding of what is going on.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:46 GMT

Content originally posted in LPCWare by drnow on Mon Nov 24 19:39:06 MST 2014
Support,
Thanks for your help and your patience getting me over several hurdles. I've used lots of software before, including several IDE's, and I must say yours presents special challenges.

I understand your comment about stepping thru code, and why the debugger was permanently asleep. Now though, I have a different problem, possibly brought on by starting up another program from the LPC Open set, where I tried periph_rtc and got it to run successfully. That works fine, and I am able to receive text via the USB port without problems.

However, I am now unable to connect to the target using the debugger. Returning to the periph_blinky program, when attempting to debug it I get the following message:

Target reported errors
Reason:
02: Failed to connect
Could not connect to core
31: No connection to emulator device

Could the 54102 be in a state that does not allow the debugger to connect to it?

Thanks,
Drnow
Atlanta, GA, USA

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:47 GMT

Content originally posted in LPCWare by lpcxpresso-support on Tue Nov 25 01:03:34 MST 2014
The rtc example is (amongst other things) showing how to put the chip into power down mode. When in this state, the debugger cannot gain access as the debug (SWD) is switched off too (to save power).

This FAQ explains how to recover pretty much any LPC family chip that gets into a mode that prevents debug access.
http://www.lpcware.com/content/faq/lpcxpresso/regaining-debug-access
[On the LPC54102 LPCXpresso board, hold down the 'ISP' button, press and release 'RESET' and then release 'ISP']

Note: this is not a fault of the debugger - it physically cannot gain control of the chip

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:47 GMT

Content originally posted in LPCWare by drnow on Tue Nov 25 02:56:28 MST 2014
Thanks. The ISP and RESET combo worked to allow the IDE/debugger to gain control of the target. I can now resume my exploration of the IDE, debugger and M4/M0.

Drnow
Atlanta, GA, USA

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:48 GMT

Content originally posted in LPCWare by davidrojas on Thu Dec 18 04:33:23 MST 2014
My LPCxpresso54102 is acting the same way, just out of the box, installed driver, plug it in (without the J5 jumper), and only the "LPC-Link UCom Port (COM)" is showing in the device list. I tried to start the debugger with lpcxpresso, clicked on search for every emulator available, an nothing is coming up. If I put the jumper, then it is recognized as an LPC device and debugging using Redlink server works like a charm.
It looks like, contrary to the documentation, these boards are not coming with CMSIS-DAP burned by default. It doesn't matter to me, because Redlink works better and allows it to debug both cores at once, but please update the documentation or fix the coming boards.

Another thing that I don't see clear is that it doesn't seem possible to debug and use only the Cortex-M0+, it always needs a proper image for the Cortex-M4 that at least wakes up the Cortex-M0+ before putting himself to sleep. In the app notes it looks that way, but then when you create a new project in lpcxpresso, it gives you 4 options: Cortex-M4, Cortex-M0+, Cortex-M4-master and Cortex-M0+-slave. From this it seems that a stand-alone Cortex-M0+ image burned in flash would boot properly, but it is not.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:48 GMT

Content originally posted in LPCWare by lpcxpresso-support on Thu Dec 18 07:27:34 MST 2014
You can recover the CMSIS-DAP image by running the LPC-Link Configuration tool:
http://www.lpcware.com/lpclink2-config-tool

However, if you are seeing the LPC-Link UCom Port, then that strongly hints that the CMSIS-DAP image is there.

Are you using LPCXpresso v7.5.0? That is *required* for complete support for this part (do no use any earlier beta).

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:49 GMT

Content originally posted in LPCWare by davidrojas on Thu Dec 18 08:12:06 MST 2014
Yes, I'm running LPCXpresso 7.5.0 in windows 7, clean version recently installed in this laptop. I didn't bother to try to recover the CMSIS-DAP with the configuration tool, because I'm better off using Redlink, but still I don't think the image that comes off-the-shelf with board is correct. The LPC-Link UCom Port is the only thing that is showing in the device list in windows, not the rest of the devices, and LPCXpresso can't find any debugger.

Now I just flashed the LPC-Link with the configuration tool, followed the instructions, no errors, but still LPCXpresso can't find the CMSIS-DAP debugger.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:50 GMT

Content originally posted in LPCWare by lpcxpresso-support on Thu Dec 18 08:22:28 MST 2014
It is possible that this is a Windows driver issue. Are there any missing drivers reported by Device Manager?

Note that the debugger uses the HID interface to CMSIS-DAP which does not show in Device Manager (will, it does, but only as a HID-compliant device.

You can use the listusb script in the Scripts directory to see what is actually there.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:50 GMT

Content originally posted in LPCWare by davidrojas on Thu Dec 18 08:42:05 MST 2014
No missing drivers, I have reinstalled the LPC-Link drivers, and still nothing. I tried the listusb, and the only HID device I have is the mouse. The LPC-LinkII UCom Port is still showing up, and it is in fact working correctly as a UART bridge.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:51 GMT

Content originally posted in LPCWare by lpcxpresso-support on Thu Dec 18 09:15:13 MST 2014
These are the devices listed by listusb with the CMSIS-DAP firmware:

VID: 1FC9 PID: 0090 (HID-compliant device)
VID: 1FC9 PID: 0090 (HID-compliant device)
VID: 1FC9 PID: 0090 (LPC-LinkII UCom Port)
VID: 1FC9 PID: 0090 (USB Composite Device)
VID: 1FC9 PID: 0090 (USB Input Device)
VID: 1FC9 PID: 0090 (USB Input Device)

As I said, I suspect a Windows driver issue.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:51 GMT

Content originally posted in LPCWare by davidrojas on Thu Dec 18 11:23:30 MST 2014
Yes, it was a Windows driver issue. I removed completely the driver, files and everything, plugged it again and it detected and installed all the drivers. The problem is it has different devices on the same physical port, so if windows screws up after installing the first one, it keeps thinking it is working because it found a device (the virtual port in this case) already.

Thanks for the help!

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:52 GMT

Content originally posted in LPCWare by pumpi on Thu Feb 19 16:45:48 MST 2015
I have exactly the same issue: COM port is visible but no CMSIS-DAP etc - and no debug access to the LPC54102 board.
Could you please explain in more detail how you solved the issue?
I reinstalled the drivers several times already. So far no success...
I even tried a different PC -> same problem.
Any hint is welcome!

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:53 GMT

Content originally posted in LPCWare by davidrojas on Fri Feb 20 00:42:44 MST 2015
You have to go to the Control Panel -> Device manager in windows, when it is pluged-in, and completely remove the drivers (uninstall), so when you plugin it in again it starts searching again like it is a new device.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:53 GMT

Content originally posted in LPCWare by pumpi on Fri Feb 20 03:02:01 MST 2015
Thank you for the immediate reply.
Unfiortunately, that's what I already did - with no success:
The only driver I see in the Device Manager is the UCOM-Port Driver. (Did you remove more than this one?)

After removing this driver and plugging the board again, Windows searches for a LPC-Link-II CMSIS DAP driver...
But finally I end up with only the UCOM Driver installed - and, of course, no debug connection from LPCXpresso.

BTW: "listusb" does also not show any othe devices than the UCOM.

I am Using LPCXpresso 7.6.2 and have also run the "lpc_driver_setup.exe" which is required for driver setup according to the 54102-board user manual.

Re: Link2 Debugger/Emulator Not Found

lpcware — Thu, 16 Jun 2016 00:44:54 GMT

Content originally posted in LPCWare by davidrojas on Fri Feb 20 03:20:06 MST 2015
Yes, it is that one, but if I remember correctly (I don't have the board on my table right know, so I cannot plug it in to check), when you remove the driver there was a checkbox that said "Remove driver software" that you need to check. If you don't find this option, another thing you can do is poke around the file system until you find the .inf file from this driver and manually delete it.