Implementing UARTE on a Bluetooth Enabled DK (ncs v1.9.1)

[Kriki]

Hello,
im trying to implement the UARTE Driver for simultaneous Use of Bluetooth and asynchrounos Uart TX/RX on a nRF52840 and nrf9160.
The Problem is that neither RX or TX works.

While Debugging i realised it Crashes while trying to create the TXEND Event.
Im getting this Error Message.

00> [00:01:08.938,568] <err> os >>> ZEPHYR FATAL ERROR 1: Unhandled interrupt on CPU 0
00> [00:00:16.987,701] <err> os: Current thread: 0x2000c7a0 (unknown)
00> [00:00:16.993,194] [1;31m<err> fatal_error: Resetting system

relevant proj.conf snippet:

#Logging
CONFIG_LOG=y
CONFIG_LOG_MODE_IMMEDIATE=y

CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=n
CONFIG_RTT_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y

### Peripheral-UART
CONFIG_SERIAL=y
CONFIG_NRFX_UARTE=y
CONFIG_NRFX_UARTE1=y
CONFIG_UART_ASYNC_API=y
CONFIG_UART_1_NRF_HW_ASYNC=y
CONFIG_UART_1_NRF_HW_ASYNC_TIMER=1

### Enable k_malloc/k_free
CONFIG_HEAP_MEM_POOL_SIZE=2048
CONFIG_MAIN_STACK_SIZE=8192

I think it might have something to do with missing KConfig Options

Any possible Solutions or Ideas would be greatly appreceated

[Kriki]

Hello,
Do you by chance know which Header to include ?
VS Code tells me that it cant find "UARTE1_IRQn" and the file you linked to isnt in the 1.9.1 version of the ncs

Regards,

Nick

[Jared]

Is this when you build for the nRF52840 or the nRF9160? Could you share the entire error log?

[Kriki]

I accidentally built it for the nrF9160 which explains why it didnt Compile.

I since changed it to use "UARTE1_SPIM1_SPIS1_TWIM1_TWIS1_IRQn" as it seemed to be the only UARTE related Interrupt but using this crashes the 9160 with this Errorlog

00> [00:01:08.228,729] <err> os: Exception occurred in Secure State
00> [00:01:08.229,095] <err> os: ***** HARD FAULT *****
00> [00:01:08.229,431] <err> os:   Fault escalation (see below)
00> [00:01:08.229,797] <err> os: ***** BUS FAULT *****
00> [00:01:08.230,133] <err> os:   Precise data bus error
00> [00:01:08.230,468] <err> os:   BFAR Address: 0x50008158
00> [00:01:08.230,834] <err> os: r0/a1:  0x00000000  r1/a2:  0x2000d7f4  r2/a3:  0x00000000
00> [00:01:08.231,323] <err> os: r3/a4:  0x2000c8fc r12/ip:  0x0000000a r14/lr:  0x000106cf
00> [00:01:08.231,842] <err> os:  xpsr:  0x61000000
00> [00:01:08.232,177] <err> os: Faulting instruction address (r15/pc): 0x000106ce
00> [00:01:08.232,635] <err> os: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0
00> [00:01:08.233,093] <err> os: Current thread: 0x2000c7a0 (unknown)

I then tried using the Zephyr Uart Driver on the nRF9160 an the UARTE Driver on the nRF52840.

The Tx from 52->91 works but the Tx from 91->52 doesnt.

Also when Tx from 52->91 the Uarte Eventhandler gets called repedeatly with the Eventtype 31.

[Jared]

Hi,

Are you building it from non-secure for the nRF9160? 

regards

Jared

[Kriki]

I build using the nrf9160dk_nrfn9160_ns build target.
Also i accidentally misclicked and verified your last reply

[Jared]

You're building it in non secure mode. The error log specified register 0x50008158 which points to the UARTE0 Secure peripheral not the non secure peripheral which lies at 0x40008000. Can you double check that you're using the correct instance?