I2C issue in v2.6.0 SDK

Question

Hello, 
 So I had a project for Sparkfun nRF9160 Thing plus on toolchain/SDK v2.5.2. Today I noticed that v2.6.0 is out and decided to upgrade. I used basic cellular udp sample to get the lowest Thing Plus baseline current and noticed something strange. So I needed to put any used peripheral in suspended state. Since there is an onboard accelerometer which needed some additional configuring in .overlay file naturally in main() I tried to suspend the i2c the device used. When I enabled `CONFIG_I2C=y` in .conf file project built just fine but after programming I checked the current profile which had strange pattern so I enabled serial output and noticed that application constantly resets itself. The output it gives: 
 E: ***** BUS FAULT ***** E: Precise data bus error E: BFAR Address: 0x0 E: r0/a1: 0x0001b120 r1/a2: 0x00d00000 r2/a3: 0x00000000 E: r3/a4: 0x0000000c r12/ip: 0x00000001 r14/lr: 0x000181b5 E: xpsr: 0x81000000 E: Faulting instruction address (r15/pc): 0x0000bfdc E: >>> ZEPHYR FATAL ERROR 25: Unknown error on CPU 0 E: Current thread: 0x2000ca18 (unknown) E: Resetting system 
 So I just wanted to point out, that there is something broken in v2.6.0. I reverted back to 2.5.2 and everything runs smoothly. To replicate this issue: 
 1) Upgrade toolchain and SDK version to 2.6.0 in VS code; 
 2) Create a new application based on cellular UDP sample; 
 3) Enable serial output in `proj.conf` and also arr "CONFIG_I2C=y"; 
 4) After building and programming, you should get the same output 
 
 Here is the generated support information:

Fullscreen 
 2352.support_info.txt 
 Download 
 
 For help and support, visit the Nordic DevZone at https://devzone.nordicsemi.com/.

{
 "platform": {
 "os": "win32",
 "osVersion": "Windows 10 Enterprise",
 "osKernel": "10.0.19045",
 "vscode": "1.87.2",
 "electron": "27.3.2",
 "node": "v18.17.1"
 },
 "system": {
 "date": "2024-03-14T10:21:25.812Z",
 "vscodeRoot": "c:\Users\andrisku\AppData\Local\Programs\Microsoft VS Code\resources\app",
 "nrfConnectForDesktopInstalled": true,
 "vscodeUptime": "00:09:56",
 "osUptime": "03:32:53",
 "cpu": "13th Gen Intel(R) Core(TM) i7-1355U"
 },
 "workspace": {
 "name": "udp",
 "workspaceFile": null,
 "folders": [
 "c:\Users\andrisku\Desktop\nrf_workspace\udp"
 ]
 },
 "sdks": [
 {
 "version": "v2.6.0",
 "path": "c:\ncs\v2.6.0"
 },
 {
 "version": "v2.5.2",
 "path": "c:\ncs\v2.5.2"
 },
 {
 "version": "v2.5.0",
 "path": "c:\Users\andrisku\Desktop\west-workspace\chester-sdk"
 }
 ],
 "activeBuild": "c:\Users\andrisku\Desktop\nrf_workspace\udp\build",
 "apps": [
 {
 "workspace": "c:\Users\andrisku\Desktop\nrf_workspace\udp",
 "uri": "c:\Users\andrisku\Desktop\nrf_workspace\udp",
 "buildConfigurations": [
 {
 "id": "c:\Users\andrisku\Desktop\nrf_workspace\udp\build",
 "name": "build",
 "boardId": "sparkfun_thing_plus_nrf9160_ns",
 "type": "Zephyr",
 "isChild": false,
 "isStale": false,
 "taskBindings": {
 "build": [],
 "pristineBuild": [],
 "flash": [],
 "eraseAndFlash": []
 }
 }
 ]
 }
 ],
 "topdir": "c:\ncs\v2.6.0",
 "workspaceState": "freestanding-ready",
 "toolchains": [
 {
 "version": "2.6.0",
 "path": "c:\ncs\toolchains\cf2149caf2"
 },
 {
 "version": "2.5.2",
 "path": "c:\ncs\toolchains\c57af46cb7"
 }
 ],
 "connectedDevices": [
 {
 "serialNumber": "000960065539"
 }
 ],
 "deviceProvider": "nrfutil",
 "tools": {
 "C:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gcc.exe": "0.16.5",
 "C:\Program Files\SEGGER\JLink_V794e\JLink.exe": "7.94e",
 "C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\nrfjprog.exe": "10.24.0",
 "nrfutil": "Not found",
 "C:\ncs\toolchains\cf2149caf2\opt\bin\cmake.exe": "3.21.0",
 "C:\ncs\toolchains\cf2149caf2\opt\bin\Scripts\west.exe": "1.2.0",
 "C:\ncs\toolchains\cf2149caf2\opt\bin\python.exe": "3.9.13",
 "C:\ncs\toolchains\cf2149caf2\opt\bin\ninja.exe": "1.10.2",
 "C:\ncs\toolchains\cf2149caf2\opt\bin\gperf.exe": "3.1",
 "C:\ncs\toolchains\cf2149caf2\opt\bin\dtc.exe": "1.4.7",
 "C:\ncs\toolchains\cf2149caf2\opt\bin\gn.exe": "2154",
 "C:\ncs\toolchains\cf2149caf2\mingw64\bin\git.exe": "2.37.3.windows.1",
 "gdbPath": "c:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gdb.exe"
 },
 "nrfutil": {
 "nrfutil-device": {
 "version": "2.0.0",
 "binPath": "c:\Users\andrisku\.vscode\extensions\nordic-semiconductor.nrf-connect-2024.2.214-win32-x64\platform\nrfutil\bin\nrfutil-device"
 },
 "nrfutil-toolchain-manager": {
 "version": "0.14.1",
 "binPath": "c:\Users\andrisku\.vscode\extensions\nordic-semiconductor.nrf-connect-2024.2.214-win32-x64\platform\nrfutil\bin\nrfutil-toolchain-manager"
 }
 },
 "environment": {
 "westEnv": {
 "ELECTRON_RUN_AS_NODE": "1",
 "HOME": "C:\Users\andrisku",
 "HOMEDRIVE": "V:",
 "HOMEPATH": "\",
 "PATH": "C:\ncs\toolchains\cf2149caf2;C:\ncs\toolchains\cf2149caf2\mingw64\bin;C:\ncs\toolchains\cf2149caf2\bin;C:\ncs\toolchains\cf2149caf2\opt\bin;C:\ncs\toolchains\cf2149caf2\opt\bin\Scripts;C:\ncs\toolchains\cf2149caf2\opt\nanopb\generator-bin;C:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk\aarch64-zephyr-elf\bin;C:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk\x86_64-zephyr-elf\bin;C:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk\arm-zephyr-eabi\bin;C:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk\riscv64-zephyr-elf\bin;c:\Users\andrisku\.vscode\extensions\nordic-semiconductor.nrf-connect-2024.2.214-win32-x64\platform\nrfutil\lib\nrfutil-toolchain-manager;C:\WINDOWS\CCM\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\WINDOWS\system32\config\systemprofile\AppData\Local\Microsoft\WindowsApps;C:\Program Files (x86)\Adaptiva\AdaptivaClient\bin\x32;C:\Program Files (x86)\Adaptiva\AdaptivaClient\bin\x64;C:\Program Files (x86)\IDEMIA\AWP\Dlls;C:\Program Files\IDEMIA\AWP\Dlls;C:\Program Files (x86)\eParaksts Token Signing\;C:\Program Files\Gemalto\Classic Client\BIN;C:\Program Files (x86)\Gemalto\Classic Client\BIN;C:\Program Files\PuTTY\;C:\ncs\v2.5.2\toolchain\bin;C:\Program Files\SEGGER\JLink;C:\Users\andrisku\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\Scripts;C:\Program Files\CMake\bin;C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\;C:\Program Files (x86)\GNU Arm Embedded Toolchain\10 2021.10\bin;C:\Program Files\Git\cmd;C:\Users\andrisku\AppData\Local\Microsoft\WindowsApps;C:\Users\andrisku\AppData\Local\Programs\Microsoft VS Code\bin",
 "ZEPHYR_BASE": "c:\ncs\v2.6.0\zephyr",
 "ZEPHYR_TOOLCHAIN_VARIANT": "zephyr",
 "ZEPHYR_SDK_INSTALL_DIR": "C:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk",
 "PYTHONPATH": "C:\ncs\toolchains\cf2149caf2\opt\bin;C:\ncs\toolchains\cf2149caf2\opt\bin\Lib;C:\ncs\toolchains\cf2149caf2\opt\bin\Lib\site-packages"
 },
 "inherited": {
 "ELECTRON_RUN_AS_NODE": "1",
 "HOME": "C:\Users\andrisku",
 "HOMEDRIVE": "V:",
 "HOMEPATH": "\",
 "Path": "C:\WINDOWS\CCM\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\WINDOWS\system32\config\systemprofile\AppData\Local\Microsoft\WindowsApps;C:\Program Files (x86)\Adaptiva\AdaptivaClient\bin\x32;C:\Program Files (x86)\Adaptiva\AdaptivaClient\bin\x64;C:\Program Files (x86)\IDEMIA\AWP\Dlls;C:\Program Files\IDEMIA\AWP\Dlls;C:\Program Files (x86)\eParaksts Token Signing\;C:\Program Files\Gemalto\Classic Client\BIN;C:\Program Files (x86)\Gemalto\Classic Client\BIN;C:\Program Files\PuTTY\;C:\ncs\v2.5.2\toolchain\bin;C:\Program Files\SEGGER\JLink;C:\Users\andrisku\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\Scripts;C:\Program Files\CMake\bin;C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\;C:\Program Files (x86)\GNU Arm Embedded Toolchain\10 2021.10\bin;C:\Program Files\Git\cmd;C:\Users\andrisku\AppData\Local\Microsoft\WindowsApps;C:\Users\andrisku\AppData\Local\Programs\Microsoft VS Code\bin",
 "PATH": "C:\WINDOWS\CCM\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\WINDOWS\system32\config\systemprofile\AppData\Local\Microsoft\WindowsApps;C:\Program Files (x86)\Adaptiva\AdaptivaClient\bin\x32;C:\Program Files (x86)\Adaptiva\AdaptivaClient\bin\x64;C:\Program Files (x86)\IDEMIA\AWP\Dlls;C:\Program Files\IDEMIA\AWP\Dlls;C:\Program Files (x86)\eParaksts Token Signing\;C:\Program Files\Gemalto\Classic Client\BIN;C:\Program Files (x86)\Gemalto\Classic Client\BIN;C:\Program Files\PuTTY\;C:\ncs\v2.5.2\toolchain\bin;C:\Program Files\SEGGER\JLink;C:\Users\andrisku\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\Scripts;C:\Program Files\CMake\bin;C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\;C:\Program Files (x86)\GNU Arm Embedded Toolchain\10 2021.10\bin;C:\Program Files\Git\cmd;C:\Users\andrisku\AppData\Local\Microsoft\WindowsApps;C:\Users\andrisku\AppData\Local\Programs\Microsoft VS Code\bin"
 },
 "toolchainPath": "c:\ncs\toolchains\cf2149caf2",
 "toolchainBinPath": "c:\ncs\toolchains\cf2149caf2\opt\zephyr-sdk\arm-zephyr-eabi\bin",
 "toolchainVersion": "2.6.0"
 },
 "terminal": {
 "defaultProfile": null
 },
 "config": {
 "nordic-semiconductor.nrf-connect": {
 "topdir": "C:\ncs\v2.6.0",
 "toolchain": {
 "path": "C:\ncs\toolchains"
 },
 "ozonePath": "C:\Program Files\SEGGER\Ozone\Ozone.exe",
 "applications": [],
 "applicationOptions": {},
 "kconfig": {
 "interface": "kconfig"
 },
 "west": {
 "env": {
 "$base": "terminal"
 }
 },
 "boardRoots": [
 "C:\ncs\v2.6.0\zephyr\boards\arm"
 ],
 "taskBindings": {},
 "buildTerminal": {
 "condensedProgress": true
 },
 "debugging": {
 "flash": true,
 "bindings": {},
 "justMyCode": true
 },
 "activeAppFollowActiveEditor": true,
 "deviceProvider": "",
 "flash": {
 "softreset": false,
 "erase": true,
 "recover": false
 },
 "enableTelemetry": false,
 "thirdpartyIntegration": {},
 "toolchainManager": {
 "indexURL": null,
 "installDirectory": ""
 },
 "nrfutil": {
 "home": "C:\Users\andrisku\.nrfutil"
 },
 "defaultOpenAction": "ask"
 },
 "nordic-semiconductor.nrf-terminal": {
 "terminalMode": "character"
 }
 },
 "extensions": {
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 "nordic-semiconductor.nrf-connect": {
 "version": "2024.2.214",
 "path": "c:\Users\andrisku\.vscode\extensions\nordic-semiconductor.nrf-connect-2024.2.214-win32-x64",
 "isActive": true
 },
 "nordic-semiconductor.nrf-terminal": {
 "version": "2024.2.78",
 "path": "c:\Users\andrisku\.vscode\extensions\nordic-semiconductor.nrf-terminal-2024.2.78",
 "isActive": true
 },
 "nordic-semiconductor.nrf-devicetree": {
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 "path": "c:\Users\andrisku\.vscode\extensions\nordic-semiconductor.nrf-devicetree-2024.2.418",
 "isActive": true
 },
 "nordic-semiconductor.nrf-kconfig": {
 "version": "2024.2.71",
 "path": "c:\Users\andrisku\.vscode\extensions\nordic-semiconductor.nrf-kconfig-2024.2.71",
 "isActive": true
 }
 },
 "external": {
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 "ms-vscode.js-debug": "1.87.0",
 "ms-vscode.js-debug-companion": "1.1.2",
 "ms-vscode.vscode-js-profile-table": "1.0.8",
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}

Hope this helps you to solve the issue! Regards, 
 Andris

Elfving · Accepted Answer

Ah, I see. 
 Then it is best to notify Circuit dojo about this, and thanks for doing so 
 Well done guys, hopefully circuit dojo can contact us and we'll find a solution. 
 Regards, 
 Elfving

I2C issue in v2.6.0 SDK

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