Merge pull request #234 from hathach/stm32f4-blackpill

move VBUS sense out of dcd_synosys to bsp

hw/bsp/pyboardv11/pyboardv11.c

@@ -38,6 +38,14 @@
 #define BUTTON_PIN            GPIO_PIN_3
 #define BUTTON_STATE_ACTIVE   1
 
+
+// enable all LED, Button, Uart, USB clock
+static void all_rcc_clk_enable(void)
+{
+  __HAL_RCC_GPIOA_CLK_ENABLE();  // USB D+, D-
+  __HAL_RCC_GPIOB_CLK_ENABLE();  // LED, Button
+}
+
 /**
   * @brief  System Clock Configuration
   *         The system Clock is configured as follow :
@@ -107,14 +115,11 @@ void board_init(void)
   // Notify runtime of frequency change.
   SystemCoreClockUpdate();
 
-  __HAL_RCC_GPIOA_CLK_ENABLE(); // USB D+/D-
-  __HAL_RCC_GPIOB_CLK_ENABLE(); // button, LED
+  all_rcc_clk_enable();
 
   GPIO_InitTypeDef  GPIO_InitStruct;
 
   // LED
-  __HAL_RCC_GPIOD_CLK_ENABLE();
-
   GPIO_InitStruct.Pin = LED_PIN;
   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
   GPIO_InitStruct.Pull = GPIO_PULLUP;
@@ -130,12 +135,8 @@ void board_init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
   HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
 
-  // Enable USB OTG clock
-  __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
-
   // USB Pin Init
   // PA9- VUSB, PA10- ID, PA11- DM, PA12- DP
-  __HAL_RCC_GPIOA_CLK_ENABLE();
 
   /* Configure DM DP Pins */
   GPIO_InitStruct.Pin = GPIO_PIN_11 | GPIO_PIN_12;
@@ -158,6 +159,13 @@ void board_init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
   GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  // Enable USB OTG clock
+  __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
+
+  // Enable VBUS sense (B device) via pin PA9
+  USB_OTG_FS->GCCFG &= ~USB_OTG_GCCFG_NOVBUSSENS;
+  USB_OTG_FS->GCCFG |= USB_OTG_GCCFG_VBUSBSEN;
 }
 
 //--------------------------------------------------------------------+