STM32F7 USB: change VBUS pin for DISCO_F746NG FS

Author: bcostm

usb/device/targets/TARGET_STM/USBPhy_STM32.cpp

@@ -216,7 +216,12 @@ void USBPhyHw::init(USBPhyEvents *events)
     __HAL_RCC_GPIOA_CLK_ENABLE();
     pin_function(PA_11, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS)); // DM
     pin_function(PA_12, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS)); // DP
+#if defined(TARGET_DISCO_F746NG_OTG_FS)
+    __HAL_RCC_GPIOJ_CLK_ENABLE();
+    pin_function(PJ_12, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_OTG_FS));  // VBUS
+#else
     pin_function(PA_9, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_OTG_FS));  // VBUS
+#endif
     pin_function(PA_10, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)); // ID
     pin_function(PA_8, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS));  // SOF
     __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
@@ -259,7 +264,7 @@ void USBPhyHw::init(USBPhyEvents *events)
     pin_function(PH_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_HS)); // NXT
 #if defined(TARGET_DISCO_F769NI)
     pin_function(PI_11, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_HS)); // DIR
-#else // TARGET_DISCO_F746NG
+#else
     pin_function(PC_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_HS)); // DIR
 #endif
     __HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE();