Hi,

I used to be able to connect to my Altera Cyclone SBC using the following JLink Commander command using V6.20:
"C:\Program Files (x86)\SEGGER\JLink\JLink.exe" -device "CYCLONE V" -if JTAG -speed 4000 -AutoConnect 1 -JTAGConf -1,-1

Command output for 6.20i:

SEGGER J-Link Commander V6.20i (Compiled Nov 17 2017 17:47:07)
DLL version V6.20i, compiled Nov 17 2017 17:46:22

Connecting to J-Link via USB...O.K.
Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
Hardware version: V8.00
S/N: 268000935
License(s): FlashBP, GDB
OEM: SEGGER-EDU
VTref = 3.034V
Device "CYCLONE V" selected.


Connecting to target via JTAG
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP
CoreSight AP[0]: 0x04770001, AHB-AP
CoreSight AP[1]: 0x04770002, APB-AP
Found Cortex-A9 r3p0
6 code breakpoints, 4 data breakpoints
Debug architecture ARMv7.0
Data endian: little
Main ID register: 0x413FC090
I-Cache L1: 32 KB, 256 Sets, 32 Bytes/Line, 4-Way
D-Cache L1: 32 KB, 256 Sets, 32 Bytes/Line, 4-Way
System control register:
Instruction endian: little
Level-1 instruction cache enabled
Level-1 data cache enabled
MMU enabled
Branch prediction enabled
Cortex-A9 identified.
J-Link>

I recently upgraded to 6.22g, and got error messages and a connection failure:

SEGGER J-Link Commander V6.22g (Compiled Jan 17 2018 16:40:20)
DLL version V6.22g, compiled Jan 17 2018 16:39:42

Connecting to J-Link via USB...O.K.
Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
Hardware version: V8.00
S/N: 268000935
License(s): FlashBP, GDB
OEM: SEGGER-EDU
VTref = 3.021V
Device "CYCLONE V" selected.


Connecting to target via JTAG
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP
AP map detection skipped. Manually configured AP map found.
AP[0]: AHB-AP (IDR: Not set)
AP[1]: APB-AP (IDR: Not set)
Iterating through AP map to find AHB-AP to use
AP[0]: Skipped. Not an APB-AP
AP[1]: APB-AP found
Settings mismatch... core selected: unknown core, core identified: Cortex-A9

**************************
WARNING: Identified core does not match configuration. (Found: None, Configured: Cortex-A9)
**************************

TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP

****** Error: Cortex-A/R-JTAG (connect): Could not identify core via peripheral ID registers.
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP
Cannot connect to target.
J-Link>

I am getting the same error with latest 6.30:

SEGGER J-Link Commander V6.30 (Compiled Jan 30 2018 18:44:50)
DLL version V6.30, compiled Jan 30 2018 18:44:37

Connecting to J-Link via USB...O.K.
Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
Hardware version: V8.00
S/N: 268000935
License(s): FlashBP, GDB
OEM: SEGGER-EDU
VTref = 2.976V
Device "CYCLONE V" selected.


Connecting to target via JTAG
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP
AP map detection skipped. Manually configured AP map found.
AP[0]: AHB-AP (IDR: Not set)
AP[1]: APB-AP (IDR: Not set)
Iterating through AP map to find AHB-AP to use
AP[0]: Skipped. Not an APB-AP
AP[1]: APB-AP found
Settings mismatch... core selected: unknown core, core identified: Cortex-A9

**************************
WARNING: Identified core does not match configuration. (Found: None, Configured: Cortex-A9)
**************************

TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP

****** Error: Cortex-A/R-JTAG (connect): Could not identify core via peripheral ID registers.
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP
TotalIRLen = 4, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x4BA00477, IRLen: 04, CoreSight JTAG-DP
Cannot connect to target.
J-Link>

Any clue on why the Altera Cyclone V is not recognized anymore ? Thanks.

Hello,

Thank you for your fast answer.

You fix worked fine.
One remark though: this was not obvious than to find the exact option in the documentation to use with the Altera_Cyclone_V.JLinkScript file :
My current understanding is that there are two types of scripts, JLink Commander scripts containing commands JLink commands, to be used with the -CommanderScript option, and DLL configuration scripts to be used with the -JLinlScriptFile option. Since both types of files seems to share the same .jlinkscript extension in your documentation, this was somewhat confusing to me.

Using, say, the .CommanderScript extension for JLink Commander scripts would help clarifying this point - my two cents.

For the record, the complete command now working with 6.30 is:

"D:\Program Files (x86)\SEGGER\JLink\JLink.exe" -if JTAG -device "CYCLONE V" -speed 4000 -JTAGConf -1,-1 -AutoConnect 1 -JLinkScriptFile "D:\Program Files (x86)\SEGGER\JLink\Devices\Altera\CycloneV\Altera_Cyclone_V.JLinkScript"

(Having the reference to the -JlinkScriptFile option in your answer, or better, the updated command above, would have been even more helpful.)

Thanks again for the great support.

Mit freundlichen Grüßen,
Éric Périé