shell/shell_module/prj_minimal.conf

CONFIG_PRINTK=y
CONFIG_SHELL=y
CONFIG_SHELL_MINIMAL=y
CONFIG_SHELL_STACK_SIZE=1024
CONFIG_SHELL_BACKEND_SERIAL=y

CONFIG_THREAD_MONITOR=y
CONFIG_INIT_STACKS=y
CONFIG_BOOT_BANNER=n
CONFIG_THREAD_NAME=y
CONFIG_LOG=n
CONFIG_CBPRINTF_NANO=y