diff --git a/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk1/hwdef-bl.dat b/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk1/hwdef-bl.dat
new file mode 100644
index 0000000000..a71c921aa7
--- /dev/null
+++ b/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk1/hwdef-bl.dat
@@ -0,0 +1,4 @@
+# hw definition file for processing by chibios_hwdef.py
+# for pixhawk1, based on fmuv3
+
+include ../fmuv3/hwdef-bl.dat
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk1/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk1/hwdef.dat
new file mode 100644
index 0000000000..c05d2e2ff1
--- /dev/null
+++ b/libraries/AP_HAL_ChibiOS/hwdef/Pixhawk1/hwdef.dat
@@ -0,0 +1,4 @@
+# hw definition file for processing by chibios_hwdef.py
+# for pixhawk1, based on fmuv3
+
+include ../fmuv3/hwdef.dat