diff options
| -rw-r--r-- | ports/stm32/usbd_conf.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/ports/stm32/usbd_conf.c b/ports/stm32/usbd_conf.c index 18f350d4a..76142789d 100644 --- a/ports/stm32/usbd_conf.c +++ b/ports/stm32/usbd_conf.c @@ -177,6 +177,22 @@ void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd) HAL_NVIC_EnableIRQ(OTG_FS_IRQn); #endif + #if MICROPY_HW_TINYUSB_STACK + // Configure VBUS sensing for TinyUSB on STM32F4/F7 which have separate GCCFG register + // The DWC2 PHY init only sets PWRDWN bit, but doesn't configure VBUS sensing + #if defined(STM32F4) || defined(STM32F7) + #if defined(MICROPY_HW_USB_VBUS_DETECT_PIN) + // Enable VBUS sensing in "B device" mode (using PA9) + USB_OTG_FS->GCCFG &= ~USB_OTG_GCCFG_NOVBUSSENS; + USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_VBUSBSEN; + #else + // Force VBUS valid (no VBUS detect pin configured) + USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_NOVBUSSENS; + USB_OTG_FS->GCCFG &= ~(USB_OTG_GCCFG_VBUSBSEN | USB_OTG_GCCFG_VBUSASEN); + #endif + #endif + #endif + #if MICROPY_HW_STM_USB_STACK return; #endif |