how to change uart0 when running? not at early boot stages.

RE: how to change uart0 when running? not at early boot stages.

Kenneth — Tue, 20 Jun 2023 17:47:02 GMT

You would likely need to compare api changes in the following folders between v2 and v2.4:

\modules\hal\nordic\nrfx\drivers\include\
\modules\hal\nordic\nrfx\drivers\src\

Kenneth

RE: how to change uart0 when running? not at early boot stages.

Kavy — Tue, 20 Jun 2023 14:49:30 GMT

Hey Kenn ,

I was able to build it without any errors only when i changed

status = nrfx_uarte_tx(&uarte_inst, m_tx_buffer, sizeof(m_tx_buffer0), 0); Line 133, main.c

status = nrfx_uarte_tx(&uarte_inst, m_tx_buffer, sizeof(m_tx_buffer0));

What changes would i have to do to get this working on v2.0.0

Thanks

-Kavya

RE: how to change uart0 when running? not at early boot stages.

Kenneth — Mon, 19 Jun 2023 07:28:14 GMT

Hello,

Can you try a newer nRF Connect SDK, e.g. 2.4 is the latest.

Kenneth

RE: how to change uart0 when running? not at early boot stages.

Kavy — Fri, 16 Jun 2023 16:23:09 GMT

Hey ken,,
I had build errors trying to nrfx_uarte sample.
Attached is the log file.

[1/13] Building C object CMakeFiles/app.dir/main.c.obj
FAILED: CMakeFiles/app.dir/main.c.obj 
C:\ncs\toolchains\v2.0.0\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gcc.exe -DKERNEL -DNRF52840_XXAA -DUSE_PARTITION_MANAGER=0 -D_FORTIFY_SOURCE=2 -D__PROGRAM_START -D__ZEPHYR__=1 -I../../../../common -IC:/ncs/v2.0.0/zephyr/include/zephyr -IC:/ncs/v2.0.0/zephyr/include -Izephyr/include/generated -IC:/ncs/v2.0.0/zephyr/soc/arm/nordic_nrf/nrf52 -IC:/ncs/v2.0.0/zephyr/soc/arm/nordic_nrf/common/. -IC:/ncs/v2.0.0/nrf/include -IC:/ncs/v2.0.0/modules/hal/cmsis/CMSIS/Core/Include -IC:/ncs/v2.0.0/modules/hal/nordic/nrfx -IC:/ncs/v2.0.0/modules/hal/nordic/nrfx/drivers/include -IC:/ncs/v2.0.0/modules/hal/nordic/nrfx/mdk -IC:/ncs/v2.0.0/zephyr/modules/hal_nordic/nrfx/. -IC:/ncs/v2.0.0/modules/debug/segger/SEGGER -IC:/ncs/v2.0.0/modules/debug/segger/Config -IC:/ncs/v2.0.0/zephyr/modules/segger/. -isystem C:/ncs/v2.0.0/zephyr/lib/libc/minimal/include -isystem c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/include -isystem c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/include-fixed -isystem C:/ncs/v2.0.0/nrfxlib/crypto/nrf_cc310_platform/include -Os -imacros C:/Users/kxj0816/Downloads/hal_nordic-master/hal_nordic-master/nrfx/samples/src/nrfx_uarte/tx_rx_non_blocking/build/zephyr/include/generated/autoconf.h -ffreestanding -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mcpu=cortex-m4 -mthumb -mabi=aapcs -mfp16-format=ieee -imacros C:/ncs/v2.0.0/zephyr/include/zephyr/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-reorder-functions -fno-defer-pop -fmacro-prefix-map=C:/Users/kxj0816/Downloads/hal_nordic-master/hal_nordic-master/nrfx/samples/src/nrfx_uarte/tx_rx_non_blocking=CMAKE_SOURCE_DIR -fmacro-prefix-map=C:/ncs/v2.0.0/zephyr=ZEPHYR_BASE -fmacro-prefix-map=C:/ncs/v2.0.0=WEST_TOPDIR -ffunction-sections -fdata-sections -std=c99 -nostdinc -MD -MT CMakeFiles/app.dir/main.c.obj -MF CMakeFiles\app.dir\main.c.obj.d -o CMakeFiles/app.dir/main.c.obj -c ../main.c
In file included from C:\ncs\v2.0.0\zephyr\include\zephyr\arch\arm\aarch32\irq.h:20,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\arch\arm\aarch32\arch.h:27,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\arch\cpu.h:19,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\kernel_includes.h:33,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\kernel.h:17,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\logging\log_ctrl.h:9,
                 from c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\common\nrfx_example.h:38,
                 from c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:34:
../main.c: In function 'main':
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:59:24: error: expected declaration specifiers or '...' before numeric constant
   59 | #define UARTE_INST_IDX 1
      |                        ^
C:\ncs\v2.0.0\zephyr\include\zephyr\sw_isr_table.h:62:39: note: in definition of macro '__MK_ISR_NAME'
   62 | #define __MK_ISR_NAME(x, y) __isr_ ## x ## _irq_ ## y
      |                                       ^
C:\ncs\v2.0.0\zephyr\include\zephyr\sw_isr_table.h:70:10: note: in expansion of macro '_MK_ISR_NAME'
   70 |   __used _MK_ISR_NAME(func, __COUNTER__) = \
      |          ^~~~~~~~~~~~
C:\ncs\v2.0.0\zephyr\include\zephyr\arch\arm\aarch32\irq.h:128:2: note: in expansion of macro 'Z_ISR_DECLARE'
  128 |  Z_ISR_DECLARE(irq_p, ISR_FLAG_DIRECT, isr_p, NULL); \
      |  ^~~~~~~~~~~~~
C:\ncs\v2.0.0\zephyr\include\zephyr\irq.h:112:2: note: in expansion of macro 'ARCH_IRQ_DIRECT_CONNECT'
  112 |  ARCH_IRQ_DIRECT_CONNECT(irq_p, priority_p, isr_p, flags_p)
      |  ^~~~~~~~~~~~~~~~~~~~~~~
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:122:5: note: in expansion of macro 'IRQ_DIRECT_CONNECT'
  122 |     IRQ_DIRECT_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_UARTE_INST_GET(UARTE_INST_IDX)), IRQ_PRIO_LOWEST,
      |     ^~~~~~~~~~~~~~~~~~
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:123:52: note: in expansion of macro 'UARTE_INST_IDX'
  123 |                        NRFX_UARTE_INST_HANDLER_GET(UARTE_INST_IDX), 0);
      |                                                    ^~~~~~~~~~~~~~
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:123:66: error: pasting ")" and "_irq_" does not give a valid preprocessing token
  123 |                        NRFX_UARTE_INST_HANDLER_GET(UARTE_INST_IDX), 0);
      |                                                                  ^
C:\ncs\v2.0.0\zephyr\include\zephyr\sw_isr_table.h:62:39: note: in definition of macro '__MK_ISR_NAME'
   62 | #define __MK_ISR_NAME(x, y) __isr_ ## x ## _irq_ ## y
      |                                       ^
C:\ncs\v2.0.0\zephyr\include\zephyr\sw_isr_table.h:70:10: note: in expansion of macro '_MK_ISR_NAME'
   70 |   __used _MK_ISR_NAME(func, __COUNTER__) = \
      |          ^~~~~~~~~~~~
C:\ncs\v2.0.0\zephyr\include\zephyr\arch\arm\aarch32\irq.h:128:2: note: in expansion of macro 'Z_ISR_DECLARE'
  128 |  Z_ISR_DECLARE(irq_p, ISR_FLAG_DIRECT, isr_p, NULL); \
      |  ^~~~~~~~~~~~~
C:\ncs\v2.0.0\zephyr\include\zephyr\irq.h:112:2: note: in expansion of macro 'ARCH_IRQ_DIRECT_CONNECT'
  112 |  ARCH_IRQ_DIRECT_CONNECT(irq_p, priority_p, isr_p, flags_p)
      |  ^~~~~~~~~~~~~~~~~~~~~~~
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:122:5: note: in expansion of macro 'IRQ_DIRECT_CONNECT'
  122 |     IRQ_DIRECT_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_UARTE_INST_GET(UARTE_INST_IDX)), IRQ_PRIO_LOWEST,
      |     ^~~~~~~~~~~~~~~~~~
In file included from C:\ncs\v2.0.0\zephyr\include\zephyr\arch\arm\aarch32\arch.h:27,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\arch\cpu.h:19,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\kernel_includes.h:33,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\kernel.h:17,
                 from C:\ncs\v2.0.0\zephyr\include\zephyr\logging\log_ctrl.h:9,
                 from c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\common\nrfx_example.h:38,
                 from c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:34:
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:122:44: warning: implicit declaration of function 'NRF_UARTE_INST_GET'; did you mean 'NRFX_UARTE_INSTANCE'? [-Wimplicit-function-declaration]
  122 |     IRQ_DIRECT_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_UARTE_INST_GET(UARTE_INST_IDX)), IRQ_PRIO_LOWEST,
      |                                            ^~~~~~~~~~~~~~~~~~
C:\ncs\v2.0.0\zephyr\include\zephyr\arch\arm\aarch32\irq.h:129:25: note: in definition of macro 'ARCH_IRQ_DIRECT_CONNECT'
  129 |  z_arm_irq_priority_set(irq_p, priority_p, flags_p); \
      |                         ^~~~~
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:122:5: note: in expansion of macro 'IRQ_DIRECT_CONNECT'
  122 |     IRQ_DIRECT_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_UARTE_INST_GET(UARTE_INST_IDX)), IRQ_PRIO_LOWEST,
      |     ^~~~~~~~~~~~~~~~~~
C:\ncs\v2.0.0\modules\hal\nordic\nrfx\drivers\nrfx_common.h:248:41: note: in expansion of macro 'NRFX_PERIPHERAL_ID_GET'
  248 | #define NRFX_IRQ_NUMBER_GET(base_addr)  NRFX_PERIPHERAL_ID_GET(base_addr)
      |                                         ^~~~~~~~~~~~~~~~~~~~~~
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:122:24: note: in expansion of macro 'NRFX_IRQ_NUMBER_GET'
  122 |     IRQ_DIRECT_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_UARTE_INST_GET(UARTE_INST_IDX)), IRQ_PRIO_LOWEST,
      |                        ^~~~~~~~~~~~~~~~~~~
c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:133:14: error: too many arguments to function 'nrfx_uarte_tx'
  133 |     status = nrfx_uarte_tx(&uarte_inst, m_tx_buffer, sizeof(m_tx_buffer), 0);
      |              ^~~~~~~~~~~~~
In file included from c:\Users\kxj0816\Downloads\hal_nordic-master\hal_nordic-master\nrfx\samples\src\nrfx_uarte\tx_rx_non_blocking\main.c:35:
C:\ncs\v2.0.0\modules\hal\nordic\nrfx\drivers\include\nrfx_uarte.h:274:12: note: declared here
  274 | nrfx_err_t nrfx_uarte_tx(nrfx_uarte_t const * p_instance,
      |            ^~~~~~~~~~~~~
ninja: build stopped: subcommand failed.

I the api IRQ_DIRECT_CONNECT()

, NRF_UARTE_INST_GET() and NRFX_UARTE_INST_ANDLER_GET() have no reference in nrfx_uarte.h file.

Thanks,

Kavya

RE: how to change uart0 when running? not at early boot stages.

steveqin — Thu, 15 Jun 2023 20:51:30 GMT

Ken,

could you please give a sample code how to change from uart to adc with zephyr drivers?

thanks,

Steve

RE: how to change uart0 when running? not at early boot stages.

Kenneth — Thu, 15 Jun 2023 14:42:24 GMT

So in short start with:
https://github.com/zephyrproject-rtos/hal_nordic/tree/master/nrfx/samples/src/nrfx_uarte/tx_rx_non_blocking

Then disable UART and switch to ADC:
https://github.com/zephyrproject-rtos/hal_nordic/tree/master/nrfx/samples/src/nrfx_saadc/simple_non_blocking

Kenneth

RE: how to change uart0 when running? not at early boot stages.

steveqin — Thu, 15 Jun 2023 14:31:19 GMT

my goal is to use the same 2 pins at the beginning for uart, then after 20ms the same 2 pins are set as ADC pins.

RE: how to change uart0 when running? not at early boot stages.

Kenneth — Thu, 15 Jun 2023 14:16:59 GMT

Hello,

Are you planning to use any zephyr drivers, or can you use the low level nrfx api layer directly in your application, ref for instance:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/boards/nrf/nrfx/README.html

I can find there are quite a lot of examples that show usage of nrfx here:
https://github.com/zephyrproject-rtos/hal_nordic/tree/master/nrfx/samples/src

So, it's very simple to solve what you want to do if you can use nrfx directly.

Kenneth

RE: how to change uart0 when running? not at early boot stages.

steveqin — Thu, 15 Jun 2023 13:33:49 GMT

Thank you Kenneth,

my final goal is that I want to set 2 pins as uart at beginning, waiting for 20ms there to expect receiving "B", if not received 'B' in 20ms then change to ADC, do you think it is possible?

thanks again,

Steve

RE: how to change uart0 when running? not at early boot stages.

Kenneth — Thu, 15 Jun 2023 13:24:42 GMT

Hello,

This is not straight forward, but I have some suggestions.

The main problem here is that it's not possible to dynamically update the pin configuration, this is not directly supported in software, and it's also not possible in hardware while a peripheral is enabled.

But there might be a way around this, at least for uart.

If you use CONFIG_PM_DEVICE=y, then you have the option to call for instance pm_device_action_run(uart_dev, PM_DEVICE_ACTION_RESUME) and pm_device_action_run(uart_dev, PM_DEVICE_ACTION_SUSPEND).
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/services/pm/api/index.html#c.pm_device_action_run

So the above you can enable and disable the UART.

Next step is to update the pins while it's disabled (SUSPEND), it looks like you can use the pinctrl_apply_state() to do this:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/hardware/pinctrl/index.html#dynamic-pin-control

So the above will update the pins.

There is now one final problem, when you now switch to RESUME the driver will automatically apply the default state, ref:
https://github.com/nrfconnect/sdk-zephyr/blob/main/drivers/serial/uart_nrfx_uarte.c#LL1853C7-L1853C30

However I can see from the above that it's possible to avoid this by a kconfig option, for instance set:
CONFIG_UART_0_GPIO_MANAGEMENT=n
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/index.html#CONFIG_UART_0_GPIO_MANAGEMENT

Kenneth