@@ -75,12 +75,13 @@
#define CFG_TUD_CDC 1
#define CFG_TUD_MSC 1
-#if CFG_TUSB_MCU == OPT_MCU_STM32F4
-// STM32F4 does not have enough endpoints (4, including hardcoded control
+// Some STM32 MCUs does not have enough endpoints (4, including control
// endpoint) to enable CDC, MSC, and HID simultaneously, so disable HID as a compromise.
-#define CFG_TUD_HID 0
+#if CFG_TUSB_MCU == OPT_MCU_STM32F4
+ #include "stm32f4xx.h"
+ #define CFG_TUD_HID ((USB_OTG_FS_MAX_IN_ENDPOINTS > 4) ? 1 : 0)
#else
-#define CFG_TUD_HID 1
+ #define CFG_TUD_HID 1
#endif
#define CFG_TUD_MIDI 0
hathach