add & pass a first few test for cdc host

implement cdch_open_subtask

1 files changed, 13 insertions, 0 deletions

diff --git a/tinyusb/common/common.h b/tinyusb/common/common.h
index 63ba26d56..ed543de00 100644
--- a/tinyusb/common/common.h
+++ b/tinyusb/common/common.h
@@ -101,6 +101,19 @@
 //--------------------------------------------------------------------+
 #define memclr_(buffer, size)  memset(buffer, 0, size)
 
+
+static inline uint8_t const * descriptor_next(uint8_t const * p_desc) ATTR_ALWAYS_INLINE ATTR_PURE;
+static inline uint8_t const * descriptor_next(uint8_t const * p_desc)
+{
+  return p_desc + p_desc[DESCRIPTOR_OFFSET_LENGTH];
+}
+
+static inline uint8_t descriptor_typeof(uint8_t const * p_desc) ATTR_ALWAYS_INLINE ATTR_PURE;
+static inline uint8_t descriptor_typeof(uint8_t const * p_desc)
+{
+  return p_desc[DESCRIPTOR_OFFSET_TYPE];
+}
+
 //------------- Conversion -------------//
 /// form an uint32_t from 4 x uint8_t
 static inline uint32_t u32_from_u8(uint8_t b1, uint8_t b2, uint8_t b3, uint8_t b4) ATTR_ALWAYS_INLINE ATTR_CONST;