Unable to flash using eclipse

[Xavier]

Hi, 

I was using eclipse for the development of our board using the nRF52832 and when I launch the debug on eclipse, the program does not flash and this is the output that I get in the console

SEGGER J-Link GDB Server V6.44e Command Line Version

JLinkARM.dll V6.44e (DLL compiled Apr  5 2019 16:15:03)

Command line: -if swd -device nRF52832_xxAA -endian little -speed 1000 -port 2331 -swoport 2332 -telnetport 2333 -vd -ir -localhostonly 1 -singlerun -strict -timeout 0
-----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:               on
Target connection timeout:     0 ms
------J-Link related settings------
J-Link Host interface:         USB
J-Link script:                 none
J-Link settings file:          none
------Target related settings------
Target device:                 nRF52832_xxAA
Target interface:              SWD
Target interface speed:        1000kHz
Target endian:                 little

Connecting to J-Link...
J-Link is connected.
Firmware: J-Link EDU Mini V1 compiled Mar 15 2019 12:47:02
Hardware: V1.00
S/N: 801011244
Feature(s): FlashBP, GDB
Checking target voltage...
Target voltage: 2.28 V
Listening on TCP/IP port 2331
Connecting to target...Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x00000000 (Data = 0x20000400)
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 = 0x000008E8)
Received monitor command: regs
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
R12= 00000000, R13= 20000400, MSP= 20000400, PSP= 00000000
R14(LR) = FFFFFFFF, R15(PC) = 000008E8
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 0x000008E8 (Data = 0x47184B06)
Received monitor command: speed auto
Select auto target interface speed (2000 kHz)
Received monitor command: flash breakpoints 1
Flash breakpoints enabled
Received monitor command: semihosting enable
Semi-hosting enabled (Handle on BKPT)
Received monitor command: semihosting IOClient 1
Semihosting I/O set to TELNET Client
Read 4 bytes @ address 0x000008E8 (Data = 0x47184B06)
Downloading 4096 bytes @ address 0x00026000 - Verified OK
Downloading 4096 bytes @ address 0x00027000 - Verified OK
Downloading 4096 bytes @ address 0x00028000 - Verified OK
Downloading 4096 bytes @ address 0x00029000 - Verified OK
Downloading 4096 bytes @ address 0x0002A000 - Verified OK
Downloading 4096 bytes @ address 0x0002B000 - Verified OK
Downloading 4096 bytes @ address 0x0002C000 - Verified OK
Downloading 4096 bytes @ address 0x0002D000 - Verified OK
Downloading 4096 bytes @ address 0x0002E000 - Verified OK
Downloading 4096 bytes @ address 0x0002F000 - Verified OK
Downloading 4096 bytes @ address 0x00030000 - Verified OK
Downloading 4096 bytes @ address 0x00031000 - Verified OK
Downloading 4096 bytes @ address 0x00032000 - Verified OK
Downloading 4096 bytes @ address 0x00033000 - Verified OK
Downloading 4096 bytes @ address 0x00034000 - Verified OK
Downloading 4096 bytes @ address 0x00035000 - Verified OK
Downloading 4096 bytes @ address 0x00036000 - Verified OK
Downloading 4096 bytes @ address 0x00037000 - Verified OK
Downloading 4096 bytes @ address 0x00038000 - Verified OK
Downloading 4096 bytes @ address 0x00039000 - Verified OK
Downloading 4096 bytes @ address 0x0003A000 - Verified OK
Downloading 4096 bytes @ address 0x0003B000 - Verified OK
Downloading 4096 bytes @ address 0x0003C000 - Verified OK
Downloading 2488 bytes @ address 0x0003D000 - Verified OK
Downloading 24 bytes @ address 0x0003D9B8 - Verified OK
Downloading 104 bytes @ address 0x0003D9D0 - Verified OK
Downloading 168 bytes @ address 0x0003DA38 - Verified OK
Downloading 24 bytes @ address 0x0003DAE0 - Verified OK
Downloading 16 bytes @ address 0x0003DAF8 - Verified OK
Downloading 16 bytes @ address 0x0003DB08 - Verified OK
Downloading 8 bytes @ address 0x0003DB18 - Verified OK
Downloading 8 bytes @ address 0x0003DB20 - Verified OK
Downloading 196 bytes @ address 0x0003DB28 - Verified OK
Downloading 84 bytes @ address 0x0003DBEC - Verified OK
Downloading 20 bytes @ address 0x0003DC40 - Verified OK
ERROR: Verification of RAMCode failed @ address 0x20000000.
Write: 0xA801BE00 F0009900
Read: 0x00013C00 E0001000
Failed to prepare for programming.
Failed to download RAMCode!
Writing register (PC = 0x   262d0)
Read 4 bytes @ address 0x000262D0 (Data = 0xFFFFFFFE)
Read 2 bytes @ address 0x000359B8 (Data = 0xFFFE)
Read 2 bytes @ address 0x000359B8 (Data = 0xFFFE)
Read 2 bytes @ address 0x000359B4 (Data = 0xFFFE)
Received monitor command: clrbp
Received monitor command: reset
WARNING: T-bit of XPSR is 0 but should be 1. Changed to 1.
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0x000000C0)
Read 2 bytes @ address 0x000359B8 (Data = 0xFFFE)
Read 2 bytes @ address 0x000359B8 (Data = 0xFFFE)
Read 2 bytes @ address 0x000359B4 (Data = 0xFFFE)
Received monitor command: regs
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
R12= 00000000, R13= 00000000, MSP= 00000000, PSP= 00000000
R14(LR) = FFFFFFFE, R15(PC) = 000000C0
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 0x000000C0 (Data = 0x00000602)
Setting breakpoint @ address 0x000359B4, Size = 2, BPHandle = 0x0001
Starting target CPU...
ERROR: Communication timed out: Requested 4 bytes, received 0 bytes !
ERROR: Can not read register 15 (R15) while CPU is running
WARNING: Target connection lost.
Reading all registers
WARNING: Failed to read memory @ address 0x00C16F52
Removing breakpoint @ address 0x000359B4, Size = 2
WARNING: Could not remove breakpoint @ address 0x000359B4
ERROR: Failed to set breakpoint at 0x000359B4
WARNING: Failed to read memory @ address 0x00C16F52

Everything was working fine some days ago and it just stopped working. 

I am pretty sure most of my settings are good. I tried re cloning the project, starting a fresh new work space and even reinstalling eclipse.

Note that I followed this guide for the setup of eclipse:
 https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/development-with-gcc-and-eclipse

Any help is appreciated

[Mojo]

The log said it flashed correctly.  It is more likely your firmware crashed on start before reaching main.  One possible reason is because Softdevice was not present.  Reflash softdevice see if it helps. 

[Xavier]

I tried erasing all and re flashing the soft device multiple time. And if an app is already on the device, it will restart de device and relaunch the old app instead of the updated one. I find this issue very odd

[Mojo]

It is odd indeed.  By any chance, there is one more jlink connected to the same pc ? Or a DevKit along with your board ? Or that you are using the DevKit to flash your board but instead it flashes the DevKit ?  The log said verify success which means flashing works.

[Xavier]

I have only one jlink and one  ̶D̶e̶v̶k̶i̶t̶ custom board connected on the PC. I tried a fresh install of my IDE and recloning the repo but I can't seem to make it work. It's such a frustrating issue though.

[Mojo]

ah! ha! There you go.  You have 2 Jlink connected.  It must have picked up the DevKit instead of your.  There is a Jlink built onto the DevKit.  You need to select the correct one by giving the serial number as parameter in the debug config.  Otherwise it will pick first found.

[Xavier]

Sorry, I was confused, it is not a devkit actually, it's a custom board with only the nrf52 chip on it so I need the external jlink to programm it. So there isn't multiple jlink connected. I have fixed my answer, sorry about that. I still cannot flash to the device using eclipse and debug ( though nrfGo and by command line works as mentioned)

[Mojo]

Well, in that case, no ideas.  I use Eclipse full time but with openOCD and a CMSIS-DAP JTAG.  Never has this issue.  Check to see if you are using the same version of jlink driver for both eclipse and nrfjprog.  May be eclipse could point to the wrong version.