Hello,
I have an MR-CANHUBK3 board with an S32K344.
I uploaded a Zephyr code with clock settings I was testing with changes in the zephyrproject/modules/hal/nxp/s32/soc/s32k344/src/Clock_Ip_Cfg.c file:
{
I also tried deleting the flashed code through J-Link and I got the following:
JLinkExe
SEGGER J-Link Commander V8.10f (Compiled Nov 6 2024 16:11:03)
DLL version V8.10f, compiled Nov 6 2024 16:09:58
Connecting to J-Link via USB...O.K.
Firmware: J-Link V10 compiled Jan 30 2023 11:28:07
Hardware version: V10.10
J-Link uptime (since boot): N/A (Not supported by this model)
S/N: 600109715
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
VTref=3.328V
Type "connect" to establish a target connection, '?' for help
J-Link>connect
Please specify device / core. <Default>: S32K344
Type '?' for selection dialog
Device>connect S32K344
Please specify target interface:
J) JTAG (Default)
S) SWD
F) FINE
I) ICSP
C) C2
T) cJTAG
TIF>SWD
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>4000
The selected device "connect" is unknown to this software version.
Device "S32K344" selected.
Connecting to target via SWD
ConfigTargetSettings() start
ConfigTargetSettings() end - Took 30us
InitTarget() start
SDA_AP detected
Unlocking device if necessary...
Device is not locked. Proceeding without the unlock procedure.
Checking if debug access is already enabled...
Debug access is not enabled yet. Performing enable debug access sequence...
Debug access enabled
Checking if HSE firmware is installed...
HSE firmware detected (SWAP enabled)
Checking if Cortex-M7_0 and Cortex-M7_1 are operating in lockstep mode
Lock step mode enabled
InitTarget() end - Took 104ms
Found SW-DP with ID 0x6BA02477
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
AP map detection skipped. Manually configured AP map found.
AP[0]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[1]: APB-AP (IDR: Not set, ADDR: 0x00000000)
AP[2]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[3]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[4]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[5]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[6]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[7]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[4]: Skipped ROMBASE read. CoreBaseAddr manually set by user
AP[4]: Skipped. Could not read CPUID register
Attach to CPU failed. Executing connect under reset.
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
AP map detection skipped. Manually configured AP map found.
AP[0]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[1]: APB-AP (IDR: Not set, ADDR: 0x00000000)
AP[2]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[3]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[4]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[5]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[6]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[7]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[4]: Skipped ROMBASE read. CoreBaseAddr manually set by user
AP[4]: Skipped. Could not read CPUID register
Could not find core in Coresight setup
ConfigTargetSettings() start
ConfigTargetSettings() end - Took 40us
InitTarget() start
SDA_AP detected
Unlocking device if necessary...
Device is not locked. Proceeding without the unlock procedure.
Checking if debug access is already enabled...
Debug access is not enabled yet. Performing enable debug access sequence...
Debug access enabled
Checking if HSE firmware is installed...
HSE firmware not installed
Checking if Cortex-M7_0 and Cortex-M7_1 are operating in lockstep mode
Lock step mode enabled
InitTarget() end - Took 15.1ms
Found SW-DP with ID 0x6BA02477
DPIDR: 0x6BA02477
CoreSight SoC-400 or earlier
AP map detection skipped. Manually configured AP map found.
AP[0]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[1]: APB-AP (IDR: Not set, ADDR: 0x00000000)
AP[2]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[3]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[4]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[5]: AHB-AP (IDR: Not set, ADDR: 0x00000000)
AP[6]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[7]: MEM-AP (IDR: Not set, ADDR: 0x00000000)
AP[4]: Skipped ROMBASE read. CoreBaseAddr manually set by user
AP[4]: Core found
****** Error: DAP error while reading AIRCR.
Error occurred: Could not connect to the target device.
For troubleshooting steps visit: https://wiki.segger.com/J-Link_Troubleshooting
J-Link>10
Unknown command. '?' for help.
I see that the board's reset light is blinking every second. I suppose the FS26 is resetting the S32K344, so that is why I can't do anything to the board.
I saw there are reset options in the hardware manual:
But that doesn't work for me. I use a 12V power supply, I removed the pin, turned on the power supply and inserted it again and nothing.
How can I upload a new code which fixes the clock and stops the resetting process? Are there any other potions to stop the resetting process so I can upload code?
