Enabling CONFIG_UART_0_NRF_UART in nrf connect

[Ashishsult]

I want to use CONFIG_UART_0_NRF_UART instead of CONFIG_UART_0_NRF_UARTE. But I don't get any option for this because CONFIG_UART_0_NRF_UARTE is selected by default .

I want to have 

#
# Serial Drivers
#
CONFIG_UART_NRFX=y
CONFIG_UART_0_NRF_UART=y
# CONFIG_UART_0_INTERRUPT_DRIVEN is not set
CONFIG_UART_0_ASYNC=y
# CONFIG_UART_0_NRF_PARITY_BIT is not set
CONFIG_NRF_UART_PERIPHERAL=y

But always getting 

#
# Serial Drivers
#
CONFIG_UART_NRFX=y
CONFIG_UART_0_NRF_UARTE=y
CONFIG_UART_0_ENHANCED_POLL_OUT=y
# CONFIG_UART_0_INTERRUPT_DRIVEN is not set
CONFIG_UART_0_ASYNC=y
# CONFIG_UART_0_NRF_PARITY_BIT is not set
CONFIG_UART_0_NRF_TX_BUFFER_SIZE=32
# CONFIG_UART_0_NRF_HW_ASYNC is not set
# CONFIG_UART_0_NRF_ASYNC_LOW_POWER is not set
CONFIG_UART_ENHANCED_POLL_OUT=y
CONFIG_NRF_UARTE_PERIPHERAL=y

Also if I put the required configuration in the proj.config, cmake fails to compile the project.

This is what I can get.

[Susheel Nuguru]

I simply used this and in the final .config it seems that UART0 is enabled instead of UARTE0

# Enable the UART driver
CONFIG_UART_NRFX=y
CONFIG_NRFX_UART0=y
# CONFIG_UART_0_INTERRUPT_DRIVEN is not set
CONFIG_UART_0_ASYNC=y
# CONFIG_UART_0_NRF_PARITY_BIT is not set
CONFIG_SERIAL=y

If you see any other results then there must be some other dependency you might have unknowingly included that pulls in UARTE aswell.

[Ashishsult]

Hi Susheel, 

I use the chat example and copy paste your lines in that but still it doesnot work. UARTE option is bydefault enabled. 

The configuration file is as below:

#
# Copyright (c) 2020 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#
CONFIG_NCS_SAMPLES_DEFAULTS=y

CONFIG_BT_CONN_TX_MAX=16

CONFIG_BT_MESH_TX_SEG_MSG_COUNT=5
#large size require large ram
CONFIG_BT_MESH_RX_SEG_MSG_COUNT=5
CONFIG_BT_MESH_TX_SEG_RETRANS_COUNT=1
CONFIG_BT_MESH_NETWORK_TRANSMIT_COUNT=0
CONFIG_BT_MESH_RELAY_RETRANSMIT_COUNT=0
CONFIG_BT_MESH_RPL_STORE_TIMEOUT=-1
CONFIG_PRINTK=y
CONFIG_LOG=y
CONFIG_LOG_BUFFER_SIZE=2048
CONFIG_USE_SEGGER_RTT=y
CONFIG_LOG_BACKEND_RTT=y
CONFIG_LOG_BACKEND_UART=n
CONFIG_RTT_CONSOLE=y
#
# Copyright (c) 2020 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#
CONFIG_NCS_SAMPLES_DEFAULTS=y

# General configuration
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_NVS=y
CONFIG_SETTINGS=y
CONFIG_HWINFO=y
CONFIG_DK_LIBRARY=y

# Bluetooth configuration
CONFIG_BT=y
CONFIG_BT_COMPANY_ID=0x0059
CONFIG_BT_DEVICE_NAME="Mesh Chat"
CONFIG_BT_L2CAP_TX_MTU=69
CONFIG_BT_L2CAP_TX_BUF_COUNT=8
CONFIG_BT_OBSERVER=y
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_SETTINGS=y

# Disable unused Bluetooth features
CONFIG_BT_CTLR_DUP_FILTER_LEN=0
CONFIG_BT_CTLR_LE_ENC=n
CONFIG_BT_DATA_LEN_UPDATE=n
CONFIG_BT_PHY_UPDATE=n
CONFIG_BT_CTLR_CHAN_SEL_2=n
CONFIG_BT_CTLR_MIN_USED_CHAN=n
CONFIG_BT_CTLR_PRIVACY=n

# Bluetooth Mesh configuration
CONFIG_BT_MESH=y
CONFIG_BT_MESH_RELAY=y
CONFIG_BT_MESH_FRIEND=y
CONFIG_BT_MESH_ADV_BUF_COUNT=13
CONFIG_BT_MESH_RX_SEG_MAX=10
CONFIG_BT_MESH_TX_SEG_MAX=10
CONFIG_BT_MESH_PB_GATT=y
CONFIG_BT_MESH_GATT_PROXY=y
CONFIG_BT_MESH_DK_PROV=y

# Enable Bluetooth mesh models debug logs
CONFIG_BT_DEBUG_LOG=y
CONFIG_BT_MESH_DEBUG=y
CONFIG_BT_MESH_DEBUG_MODEL=y

# Enable Shell module and use UART as a backend
CONFIG_SHELL=y
CONFIG_SHELL_BACKEND_SERIAL=y

CONFIG_PRINTK=y
CONFIG_UART_CONSOLE=n
CONFIG_LOG=y
CONFIG_LOG_BUFFER_SIZE=2048
CONFIG_USE_SEGGER_RTT=y
CONFIG_LOG_BACKEND_RTT=y
CONFIG_LOG_BACKEND_UART=n
CONFIG_RTT_CONSOLE=y
CONFIG_LOG_DEFAULT_LEVEL=4

# Enable the UART driver
CONFIG_UART_NRFX=y
CONFIG_NRFX_UART0=y
# CONFIG_UART_0_INTERRUPT_DRIVEN is not set
CONFIG_UART_0_ASYNC=y
# CONFIG_UART_0_NRF_PARITY_BIT is not set
CONFIG_SERIAL=y

Can you please let me know which example have you use?

[Susheel Nuguru]

I used a simple bluetooth sample and not the Mesh sample. Can you please attach your project so that i can do some tests here and not spend too much time on configuring stuff attempting to match yours.

[Ashishsult]

I have uploaded here: https://televicgroupnv-my.sharepoint.com/:u:/r/personal/a_sultania_televic_com/Documents/Documents/chat.zip?csf=1&web=1&e=43fetb 

However its just the Nordic Chat example by adding your configuration lines in prj.conf

[Susheel Nuguru]

Sorry for late response, it seems like the attachment needs authentication to download which I can't get pass through. Note that you can attach the zip files here in this thread.

[Ashishsult]

chat.zip

Here is the file

[Susheel Nuguru]

Not sure why it worked for me earlier, but it seems like you need to edit the dts fie for that.

in the file zephyr\drivers\serial\Kconfig.nrfx there seems to be a check before enabling the UART legacy module

config UART_0_NRF_UART
	def_bool $(dt_nodelabel_has_compat,uart0,$(DT_COMPAT_NORDIC_NRF_UART))
	select NRF_UART_PERIPHERAL
	help
	  Enable nRF UART without EasyDMA on port 0.

config UART_0_NRF_UARTE
	def_bool $(dt_nodelabel_has_compat,uart0,$(DT_COMPAT_NORDIC_NRF_UARTE))
	select NRF_UARTE_PERIPHERAL
	help
	  Enable nRF UART with EasyDMA on port 0.

when I edit v1.8.0\zephyr\boards\arm\nrf52dk_nrf52832\nrf52dk_nrf52832.dts

to remove compatibility  nrf-uarte and replace it wiath nrf-uart

arduino_serial: &uart0 {
	status = "okay";
	compatible = "nordic,nrf-uart";
	current-speed = <115200>;
	tx-pin = <6>;
	rx-pin = <8>;
	rts-pin = <5>;
	cts-pin = <7>;
};

Then the config in your project seems to look the way you want

#
# Serial Drivers
#
CONFIG_UART_NRFX=y
CONFIG_UART_0_NRF_UART=y
# CONFIG_UART_0_INTERRUPT_DRIVEN is not set
# CONFIG_UART_0_NRF_PARITY_BIT is not set
CONFIG_NRF_UART_PERIPHERAL=y
# CONFIG_UART_ALTERA_JTAG is not set
# CONFIG_UART_RTT is not set
# CONFIG_UART_XLNX_UARTLITE is not set