nRF52811 with IAR Embedded Workbench 8.42.1 s140 sd_softdevice_enable hardfault

[nahro]

Hello,

I am trying to port ble_app_hrs_rscs_relay example to nRF52811 with softdevice s140 7.2 and nRF5_SDK_17.1.0. Everything works fine and the app is running and I can debug the app. When i reset the app i get a hardfault in sd_softdevice_enable if i download and debug the app. If i just debug without downloading i get error code 8 Invalid state. I just have the app without bootloader. 

Am I missing something? I really appreciate your help.de

[Sigurd]

Hi,

I'm not seeing this behavior here.

Do you see the same with e.g. nRF52840 or nRF52832 DK, and the un-modified example? Or is this just happening with the modified example/project?

[nahro]

The example works fine with nRF52840, and it works with nrf52811 each time i erase the chip with nRFconnect  but when i reset it i get the hardfault. I use this board. 

[Sigurd]

nahro said:

but when i reset it i get the hardfault

I'm trying to reproduce it. Can you explain in detail how you reset it to trigger this?

[nahro]

Here i get the hardfault, if i download and debug:

if I reset it and run it again i still get hardfault:

But if I debug without downloading:

sd_softdevice_enable return 8.

I i erase the chip it will work just once:

if i reset it i get the same error code:

[hmolesworth]

Debug in IAR does not issue a hard reset which means the SoftDevice is not correctly initialised. Further any debug break or step requires the use of J-Link Monitor. Here are some notes:

   // Allow all interrupts higher than _PRIO_SD_LOW (ie 4, BLE SD stuff) to continue execution even during a break
   // note Two J-Link commands are required in IAR settings:
   // SetMonModeDebug = 1
   // SetMonModeVTableAddr = ADDR
   //  where ADDR is the application's vector table located in FLASH, ie the start address for the
   // application, probably either 0x1B000 or 0x1C000 or 0x26000 depending on SoftDevice
   // See https://github.com/NordicPlayground/j-link-monitoring-mode-debugging
   NVIC_SetPriority(DebugMonitor_IRQn, _PRIO_SD_LOW);

j-link-monitoring-mode-debugging

IAR comments here:

must-re-flash-softdevice-every-time-i-debug

[nahro]

Thank you for your answer. If SoftDevice is not correctly initialized, why the device is working fine? advertising and i can  connect and read/write from characteristics? I have this issue when i debugging. Now I added DEVELOP_IN_NRF52840 flag and the issue disappear which is wired because i changed the target  to nrf52811 and the target is nrf52811 and i followed this:

Updated: DEVELOP_IN_NRF52840  worked just once and i get the same issue again.

[nahro]

I fixed the problem by porting s112 nrf52811 example to s140