stmhal: Replace magic number 3 with CDC_IN_EP define.

stmhal/usbd_cdc_interface.c

@@ -265,10 +265,11 @@ void USBD_CDC_HAL_TIM_PeriodElapsedCallback(void) {
     if (UserTxBufPtrOut != UserTxBufPtrOutShadow) {
         // We have sent data and are waiting for the low-level USB driver to
         // finish sending it over the USB in-endpoint.
-        if (UserTxBufPtrWaitCount < 10) {
+        // We have a 15 * 10ms = 150ms timeout
+        if (UserTxBufPtrWaitCount < 15) {
             PCD_HandleTypeDef *hpcd = hUSBDDevice.pData;
             USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
-            if (USBx_INEP(3)->DIEPTSIZ & USB_OTG_DIEPTSIZ_XFRSIZ) {
+            if (USBx_INEP(CDC_IN_EP & 0x7f)->DIEPTSIZ & USB_OTG_DIEPTSIZ_XFRSIZ) {
                 // USB in-endpoint is still reading the data
                 UserTxBufPtrWaitCount++;
                 return;

stmhal/usbdev/class/cdc_msc_hid/inc/usbd_cdc_msc_hid.h

@@ -13,6 +13,11 @@
 #define MSC_IN_EP     (0x81)
 #define MSC_OUT_EP    (0x01)
 
+// Need to define here for usbd_cdc_interface.c (it needs CDC_IN_EP)
+#define CDC_IN_EP     (0x83)
+#define CDC_OUT_EP    (0x03)
+#define CDC_CMD_EP    (0x82)
+
 // only CDC_MSC and CDC_HID are available
 #define USBD_MODE_CDC (0x01)
 #define USBD_MODE_MSC (0x02)

stmhal/usbdev/class/cdc_msc_hid/src/usbd_cdc_msc_hid.c

@@ -4,9 +4,6 @@
 #define USB_CDC_MSC_CONFIG_DESC_SIZ (98)
 #define USB_CDC_HID_CONFIG_DESC_SIZ (100)
 #define CDC_IFACE_NUM (1)
-#define CDC_IN_EP     (0x83)
-#define CDC_OUT_EP    (0x03)
-#define CDC_CMD_EP    (0x82)
 #define MSC_IFACE_NUM (0)
 #define HID_IFACE_NUM_WITH_CDC (0)
 #define HID_IFACE_NUM_WITH_MSC (1)