diff --git a/configs/nrf52-pca10040/README.txt b/configs/nrf52-pca10040/README.txt
index 97cc24b2ff..3d2b3bc6f1 100644
--- a/configs/nrf52-pca10040/README.txt
+++ b/configs/nrf52-pca10040/README.txt
@@ -110,3 +110,9 @@ Where <subdir> is one of the following:
 
        b. Execute 'make menuconfig' in nuttx/ in order to start the
           reconfiguration process.
+
+  wdog:
+  ----
+
+    This configuration is a simple NSH-based test of the nRF52 watchdog
+    timer driver using the test at apps/examples/watchdog.
diff --git a/configs/nrf52-pca10040/wdog/defconfig b/configs/nrf52-pca10040/wdog/defconfig
new file mode 100644
index 0000000000..aa442486f6
--- /dev/null
+++ b/configs/nrf52-pca10040/wdog/defconfig
@@ -0,0 +1,45 @@
+# CONFIG_ARCH_FPU is not set
+# CONFIG_NSH_DISABLE_IFCONFIG is not set
+# CONFIG_NSH_DISABLE_PS is not set
+CONFIG_ARCH_BOARD_NRF52_PCA10040=y
+CONFIG_ARCH_BOARD="nrf52-pca10040"
+CONFIG_ARCH_CHIP_NRF52=y
+CONFIG_ARCH_CHIP_NRF52832=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_STDARG_H=y
+CONFIG_ARCH="arm"
+CONFIG_BOARD_LOOPSPERMSEC=5500
+CONFIG_BUILTIN=y
+CONFIG_EXAMPLES_NSH=y
+CONFIG_EXAMPLES_WATCHDOG=y
+CONFIG_FAT_LCNAMES=y
+CONFIG_FAT_LFN=y
+CONFIG_FS_FAT=y
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_MM_REGIONS=2
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_NRF52_UART0=y
+CONFIG_NRF52_WDT=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_RAM_SIZE=65535
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_START_DAY=26
+CONFIG_START_MONTH=3
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_WDOG_INTRESERVE=0