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