From 3f9e79ae9b5e6522507e50b208f7ec9b0b1317db Mon Sep 17 00:00:00 2001
From: "William D. Jones" <thor0505@comcast.net>
Date: Sun, 11 Aug 2019 17:42:22 -0400
Subject: [PATCH] cdc_msc_hid: Limit number of endpoints used by STM32F4 for
 demo.

---
 examples/device/cdc_msc_hid/src/tusb_config.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/examples/device/cdc_msc_hid/src/tusb_config.h b/examples/device/cdc_msc_hid/src/tusb_config.h
index 1c0ee349..92cc2bbd 100644
--- a/examples/device/cdc_msc_hid/src/tusb_config.h
+++ b/examples/device/cdc_msc_hid/src/tusb_config.h
@@ -74,7 +74,14 @@
 //------------- CLASS -------------//
 #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
+// endpoint) to enable CDC, MSC, and HID simultaneously, so disable HID as a
+// compromise.
+#define CFG_TUD_HID              0
+#else
 #define CFG_TUD_HID              1
+#endif
 
 #define CFG_TUD_MIDI             0
 #define CFG_TUD_VENDOR           0