hwdef: add CoreWingF405WMiniV2

The CoreWing F405 Wing Mini V2 is a compact variant of the
CoreWingF405WingV2. The hwdef inherits from the base target and only
overrides the Mini-specific hardware differences.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

libraries/AP_HAL_ChibiOS/hwdef/CoreWingF405WMiniV2/defaults.parm

@@ -0,0 +1,4 @@
+# The VTX/CAM supply is high-side switched, so relay 1 is inverted: "relay on"
+# drives the pin low, which applies power. RELAY1_INVERTED has no hwdef
+# equivalent, so it has to be set here.
+RELAY1_INVERTED 1

libraries/AP_HAL_ChibiOS/hwdef/CoreWingF405WMiniV2/hwdef-bl.dat

@@ -0,0 +1,8 @@
+# hw definition file for processing by chibios_pins.py
+# for CoreWing F405 Wing Mini V2 bootloader
+
+include ../CoreWingF405WingV2/hwdef-bl.dat
+
+# board ID for firmware load
+undef APJ_BOARD_ID
+APJ_BOARD_ID  AP_HW_CoreWingF405WMiniV2

libraries/AP_HAL_ChibiOS/hwdef/CoreWingF405WMiniV2/hwdef.dat

@@ -0,0 +1,29 @@
+# hw definition file for CoreWing F405 Wing Mini V2
+# Derived from CoreWingF405WingV2. Keep the common F405 Wing-family
+# definitions in the base target and only override Mini-specific hardware
+# differences here.
+
+include ../CoreWingF405WingV2/hwdef.dat
+
+# board ID for firmware load
+undef APJ_BOARD_ID
+APJ_BOARD_ID  AP_HW_CoreWingF405WMiniV2
+
+# Mini V2 uses PC4 as the IMU data-ready input instead of analog RSSI.
+undef PC4
+PC4 MPU_DRDY INPUT
+
+# Analog RSSI is not available on Mini V2 because PC4 is used by IMU DRDY.
+undef BOARD_RSSI_ANA_PIN
+
+# The Mini V2 PDB current-sense scaling differs from the full Wing V2 board.
+undef HAL_BATT_CURR_SCALE
+define HAL_BATT_CURR_SCALE 51    # matched to Mini V2 PDB board
+
+# PWM output differences from the base Wing V2 target.
+# Mini V2 does not enable bidirectional DShot on M1/M3.
+undef PB7 PB6 PB0 PB1
+PB7  TIM4_CH2  TIM4 PWM(1) GPIO(50)
+PB6  TIM4_CH1  TIM4 PWM(2) GPIO(51)
+PB0  TIM3_CH3  TIM3 PWM(3) GPIO(52)
+PB1  TIM3_CH4  TIM3 PWM(4) GPIO(53)