Move receiving to double buffering on STM32F10x

Author: makarenya

cores/arduino/stm32/usb/cdc/usbd_cdc.h

@@ -41,9 +41,9 @@ extern "C" {
 /** @defgroup usbd_cdc_Exported_Defines
   * @{
   */
-#define CDC_IN_EP                                   0x81U  /* EP1 for data IN */
+#define CDC_IN_EP                                   0x82U  /* EP1 for data IN */
 #define CDC_OUT_EP                                  0x01U  /* EP1 for data OUT */
-#define CDC_CMD_EP                                  0x82U  /* EP2 for CDC commands */
+#define CDC_CMD_EP                                  0x83U  /* EP2 for CDC commands */
 
 #ifndef CDC_HS_BINTERVAL
 #define CDC_HS_BINTERVAL                          0x10U

cores/arduino/stm32/usb/usbd_conf.c

@@ -28,10 +28,12 @@
 /* Private typedef -----------------------------------------------------------*/
 /* Private define ------------------------------------------------------------*/
 /* Size in words, byte size divided by 2 */
-#define PMA_EP0_OUT_ADDR (8 * 3)
+#define PMA_EP0_OUT_ADDR (8 * 4)
 #define PMA_EP0_IN_ADDR (PMA_EP0_OUT_ADDR + USB_MAX_EP0_SIZE)
-#define PMA_CDC_OUT_ADDR (PMA_EP0_IN_ADDR + USB_MAX_EP0_SIZE)
-#define PMA_CDC_IN_ADDR (PMA_CDC_OUT_ADDR + USB_FS_MAX_PACKET_SIZE)
+#define PMA_CDC_OUT_BASE (PMA_EP0_IN_ADDR + USB_MAX_EP0_SIZE)
+#define PMA_CDC_OUT_ADDR ((PMA_CDC_OUT_BASE + USB_FS_MAX_PACKET_SIZE) | \
+                         (PMA_CDC_OUT_BASE << 16U))
+#define PMA_CDC_IN_ADDR (PMA_CDC_OUT_BASE + USB_FS_MAX_PACKET_SIZE)
 #define PMA_CDC_CMD_ADDR (PMA_CDC_IN_ADDR + USB_FS_MAX_PACKET_SIZE)
 /* Private macro -------------------------------------------------------------*/
 /* Private variables ---------------------------------------------------------*/
@@ -376,6 +378,9 @@ void OTG_FS_IRQHandler(void)
 void USB_IRQHandler(void)
 #endif
 {
+  CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
+  DWT->CYCCNT = 0;
+  DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
   HAL_PCD_IRQHandler(&g_hpcd);
 }
 
@@ -489,9 +494,9 @@ USBD_StatusTypeDef USBD_LL_Init(USBD_HandleTypeDef *pdev)
 #else
   HAL_PCDEx_PMAConfig(&g_hpcd, 0x00, PCD_SNG_BUF, PMA_EP0_OUT_ADDR);
   HAL_PCDEx_PMAConfig(&g_hpcd, 0x80, PCD_SNG_BUF, PMA_EP0_IN_ADDR);
-  HAL_PCDEx_PMAConfig(&g_hpcd, 0x01, PCD_SNG_BUF, PMA_CDC_OUT_ADDR);
-  HAL_PCDEx_PMAConfig(&g_hpcd, 0x81, PCD_SNG_BUF, PMA_CDC_IN_ADDR);
-  HAL_PCDEx_PMAConfig(&g_hpcd, 0x82, PCD_SNG_BUF, PMA_CDC_CMD_ADDR);
+  HAL_PCDEx_PMAConfig(&g_hpcd, 0x01, PCD_DBL_BUF, PMA_CDC_OUT_ADDR);
+  HAL_PCDEx_PMAConfig(&g_hpcd, 0x82, PCD_SNG_BUF, PMA_CDC_IN_ADDR);
+  HAL_PCDEx_PMAConfig(&g_hpcd, 0x83, PCD_SNG_BUF, PMA_CDC_CMD_ADDR);
 #endif
 #endif /* USE_USB_HS */
   return USBD_OK;