Hello,

I'm trying to debug an application on the Cortex-M4 of my iMX7D using the Segger JLink-Base debugger.
The debugging works correctly using Ozone.

But unfortunately I can't do it using eclipse.
The debugger configuration and the result screen shots from eclipse are attached.
I'm using the Eclipse IDE for C/C++ Developers Version: 2019-03 (4.11.0)
I used the NXP linker from Segger



If I don't run a firmware on M4, the J-Link GDB server fails even to run with a message:
Could not connect to target. Please check if target is powered and if ribbon cable is plugged properly.

After running a firmware using the u-boot. The debugger stucks at: "starting target CPU".


The console log: ---------------------------------------------------------------------------------------------------

SEGGER J-Link GDB Server V6.46a Command Line Version

JLinkARM.dll V6.46a (DLL compiled May 27 2019 16:35:08)

Command line: -if jtag -device MCIMX7D7_M4 -endian little -speed auto -port 2331 -swoport 2332 -telnetport 2333 -vd -ir -localhostonly 1 -jlinkscriptfile /home/majd/NXP_iMX7D_Connect_CortexM4.JLinkScript
-----GDB Server start settings-----
GDBInit file: none
GDB Server Listening port: 2331
SWO raw output listening port: 2332
Terminal I/O port: 2333
Accept remote connection: localhost only
Generate logfile: off
Verify download: on
Init regs on start: on
Silent mode: off
Single run mode: off
Target connection timeout: 0 ms
------J-Link related settings------
J-Link Host interface: USB
J-Link script: /home/majd/NXP_iMX7D_Connect_CortexM4.JLinkScript
J-Link settings file: none
------Target related settings------
Target device: MCIMX7D7_M4
Target interface: JTAG
Target interface speed: auto
Target endian: little

Connecting to J-Link...
J-Link is connected.
Firmware: J-Link V10 compiled May 27 2019 15:48:59
Hardware: V10.10
S/N: 50124514
Feature(s): GDB
Checking target voltage...
Target voltage: 3.35 V
Listening on TCP/IP port 2331
Connecting to target...
J-Link found 1 JTAG device, Total IRLen = 4
JTAG ID: 0x4BA00477 (Cortex-M4)
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x00000000 (Data = 0x20008000)
Received monitor command: speed 1000
Target interface speed set to 1000 kHz
Received monitor command: clrbp
Received monitor command: reset
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0x1FFFA73E)
Received monitor command: regs
R0 = 30610000, R1 = 00000000, R2 = A30007E0, R3 = 30610000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 20007FE8
R8 = 00000000, R9 = 00000000, R10= 1FFF8000, R11= 00000000
R12= 00000000, R13= 20007FE8, MSP= 20007FE8, PSP= 00000000
R14(LR) = 1FFFA73F, R15(PC) = 1FFFA73E
XPSR 01000000, APSR 00000000, EPSR 01000000, IPSR 00000000
CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
Reading all registers
Read 4 bytes @ address 0x1FFFA73E (Data = 0xD768E7FE)
Received monitor command: speed 4000
Target interface speed set to 4000 kHz
Received monitor command: flash breakpoints 0
Flash breakpoints disabled
Received monitor command: semihosting enable
Semi-hosting enabled (Handle on BKPT)
Received monitor command: semihosting IOClient 1
Semihosting I/O set to TELNET Client
Received monitor command: reset 0
Resets core & peripherals via SYSRESETREQ & VECTRESET bit.
Read 4 bytes @ address 0x1FFFA73E (Data = 0xD768E7FE)
Downloading 576 bytes @ address 0x00000000 - Verified OK
Downloading 4096 bytes @ address 0x1FFF8000 - Verified OK
Downloading 4096 bytes @ address 0x1FFF9000 - Verified OK
Downloading 4096 bytes @ address 0x1FFFA000 - Verified OK
Downloading 4096 bytes @ address 0x1FFFB000 - Verified OK
Downloading 4096 bytes @ address 0x1FFFC000 - Verified OK
Downloading 3128 bytes @ address 0x1FFFD000 - Verified OK
Downloading 8 bytes @ address 0x1FFFDC38 - Verified OK
Downloading 4 bytes @ address 0x1FFFDC40 - Verified OK
Downloading 4 bytes @ address 0x1FFFDC44 - Verified OK
Downloading 464 bytes @ address 0x20000000 - Verified OK
Writing register (PC = 0x1fff80b4)
Read 4 bytes @ address 0x1FFF80B4 (Data = 0xF8DFB672)
Read 2 bytes @ address 0x1FFFA6C6 (Data = 0x4A1E)
Read 2 bytes @ address 0x1FFFA6C6 (Data = 0x4A1E)
Read 2 bytes @ address 0x1FFFA6C6 (Data = 0x4A1E)
Received monitor command: clrbp
Received monitor command: reset
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0x1FFFA73E)
Read 2 bytes @ address 0x1FFFA6C6 (Data = 0x4A1E)
Read 2 bytes @ address 0x1FFFA6C6 (Data = 0x4A1E)
Read 2 bytes @ address 0x1FFFA6C6 (Data = 0x4A1E)
Received monitor command: regs
R0 = 30610000, R1 = 00000000, R2 = A30007E0, R3 = 30610000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 20007FE8
R8 = 00000000, R9 = 00000000, R10= 1FFF8000, R11= 00000000
R12= 00000000, R13= 20007FE8, MSP= 20007FE8, PSP= 00000000
R14(LR) = 1FFFA73F, R15(PC) = 1FFFA73E
XPSR 01000000, APSR 00000000, EPSR 01000000, IPSR 00000000
CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
Reading all registers
Read 4 bytes @ address 0x1FFFA73E (Data = 0xD768E7FE)
Setting breakpoint @ address 0x1FFFA6C6, Size = 2, BPHandle = 0x0001
Starting target CPU...

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Thanks for your help in advance.


Best regards,
Majd