nrf9160dk_nrf52840.conf

CONFIG_UART_ASYNC_API=y
CONFIG_UART_1_ASYNC=y
CONFIG_UART_1_INTERRUPT_DRIVEN=n

# Align with the Serial LTE Modem (SLM) application.
CONFIG_MODEM_CELLULAR_UART_BUFFER_SIZES=6000

# Print logs and printk() output on uart0.
CONFIG_LOG_BACKEND_UART=y

CONFIG_MODEM_LOG_LEVEL_DBG=y

# Disable AT shell as SLM application has no AT mode user pipes
CONFIG_MODEM_AT_SHELL=n