CONFIG_UART_ASYNC_API=y
# Enable HW RX byte counting. This especially matters at higher baud rates.
CONFIG_UART_1_NRF_HW_ASYNC=y
CONFIG_UART_1_NRF_HW_ASYNC_TIMER=1

# Align with the Serial LTE Modem (SLM) application.
CONFIG_MODEM_CELLULAR_CMUX_MAX_FRAME_SIZE=1500
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