Dear,

I've recently had a problem using ozone with PLC2387 and LPC 2148. Previously everything worked fine. But now I received following error message from Ozone

Device "LPC2387" selected.
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4F1F0F0F, IRLen: 04, ARM7TDMI-S Core
Connected to target device.
Elf.GetEntryPointPC(); // returns 0x8000
Target.SetReg ("PC", 0x8000);

Failed to measure CPU clock frequency
Read memory error @ address 0x40000000, 16 bytes: Communication timeout.
000, 16 bytes: Communication timeout.
Failed to halt CPU for clock frequency detection!
Target voltage too low (1 Volt is required, Measured: 0.0 Volt).
Download failed: J-Link reports an unspecified download error

Connection to target device lost.
Disconnected from target device.
Elf.GetEntryPointPC(); // returns 0x8000
Target.SetReg ("PC", 0x8000);
Target.SetReg ("PC", 0x8000): Not connected.

The problem for device LMP2148 is equal. I can download program to flash using JFlash. But if I use J-Link, I will receive equal error message.

I use Ozone 2.70a (x64), SEGGER J-Link Commander V6.54 (Compiled Oct 28 2019 10:35:28) and SEGGER J-Link ARM V10.10 with firmware 22 Oct 2019. But, I periodically received following message in J-Link

Connecting to J-Link via USB...Updating firmware: J-Link V10 compiled Oct 22 2019 16:28:15
Replacing firmware: J-Link V10 compiled Jun 3 2015 BTL
Waiting for new firmware to boot
FAILED: Communication timed out: Requested 4 bytes, received 0 bytes !
Could not read J-Link capabilities.
Cannot connect to J-Link
J-Link>con
J-Link connection not established yet but required for command.
Connecting to J-Link via USB...

And J-Link is unavailable until rebooted. Help me, please

BR,
Andy

Dear colleagues, will anyone answer? JLinkLogOverride is in in attachment.

Hello Fabian,

When problem appeared first time I didn't updated Ozone. I updated Ozone later, I hoped to fix problem. But I could not fix problem.

I checked voltage between VCC and GND on JTAG in during download .hex file - voltage was stable and equal 3.3 V.

BR,
Andy

Fabian, I don't see any difference environment (debugger, scheme, chips and software SEGGER for debugger) between last successful experience and bad experience (when appeared problem). I updated J-Link software up to latest version, but it had fixed problem. Also, I tested my J-link PLUS with new PC with latest Ozone and J-Link software - result is equal (problem saved). I don't know, that I can do it.

I'm embarrassed by the error message Replacing firmware: J-Link V10 compiled Jun 3 2015 BTL. Early (when Ozone and J-Link PLUS worked) this message didn't appeared.

BR,
Andy

Fabian, answers is below

1) Does this replacing firmware error also appear when you are using J-Link Commander (jlink.exe)?

Message about replacing firmware does not always appears and Yes, this message also appear when I using J-Link Commander.

2) Could you send us a picture of the whole Commander output?

Picture is in attachement

Connecting to J-Link via USB...O.K.
Firmware: J-Link V10 compiled Oct 22 2019 16:28:15
Hardware version: V10.10
S/N: 600112975
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
VTref=3.303V


Type "connect" to establish a target connection, '?' for help
J-Link>con
Please specify device / core. <Default>: LPC2387
Type '?' for selection dialog
Device>
Please specify target interface:
J) JTAG (Default)
TIF>
Device position in JTAG chain (IRPre,DRPre) <Default>: -1,-1 => Auto-detect
JTAGConf>
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>500
Device "LPC2387" selected.


Connecting to target via JTAG
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4F1F0F0F, IRLen: 04, ARM7TDMI-S Core
ARM7 identified.
ETM V1.2: 1 pairs addr.comp, 0 data comp, 4 MM decs, 1 counters
J-Link>r
Reset delay: 0 ms
Reset type NORMAL: Using RESET pin, halting CPU after Reset
J-Link>loadfile c:\WORKS\EM133_12.9.28.24_24D1_test.hex
Downloading file [c:\WORKS\EM133_12.9.28.24_24D1_test.hex]...

****** Error: Failed to measure CPU clock frequency
Communication timed out: Requested 4 bytes, received 0 bytes !Read memory error @ address 0x40000000, 16 bytes: Communication timeout.
Failed to halt CPU for clock frequency detection!
Target voltage too low (1 Volt is required, Measured: 0.0 Volt).
Unspecified error -1
J-Link>

3) Is the J-Link connected to the PC directly, or via an USB-Hub?

I tried both variants - connect j-link to PC directly and via USB-Hub. Results are equal - problem has saved.

4) Could you send us a picture of your debug setup?

My debug setup from Ozone is in file "debug setup.pdf".

Hi Fabian,

Additional information. I observe switch on the red LED on the J-Link PLUS during 3-5 seconds. Red LED switches after start donloading program from Ozone

BR,
Andy

Hi Fabian,

Do you have any ideas about our problem? I still need your help...

BR,
Andy