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add helper tu_desc_find/find2/find3

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This commit is contained in:
hathach
2023-01-20 15:30:24 +07:00
parent 3fd075b48b
commit 074289caa3
2 changed files with 48 additions and 0 deletions
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13
src/common/tusb_types.h
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@@ -543,22 +543,35 @@ TU_ATTR_ALWAYS_INLINE static inline const char *tu_edpt_type_str(tusb_xfer_type_
//--------------------------------------------------------------------+
// Descriptor helper
//--------------------------------------------------------------------+
// return next descriptor
TU_ATTR_ALWAYS_INLINE static inline uint8_t const * tu_desc_next(void const* desc)
{
uint8_t const* desc8 = (uint8_t const*) desc;
return desc8 + desc8[DESC_OFFSET_LEN];
}
// get descriptor type
TU_ATTR_ALWAYS_INLINE static inline uint8_t tu_desc_type(void const* desc)
{
return ((uint8_t const*) desc)[DESC_OFFSET_TYPE];
}
// get descriptor length
TU_ATTR_ALWAYS_INLINE static inline uint8_t tu_desc_len(void const* desc)
{
return ((uint8_t const*) desc)[DESC_OFFSET_LEN];
}
// find descriptor that match byte1 (type)
uint8_t const * tu_desc_find(uint8_t const* desc, uint8_t const* end, uint8_t byte1);
// find descriptor that match byte1 (type) and byte2
uint8_t const * tu_desc_find2(uint8_t const* desc, uint8_t const* end, uint8_t byte1, uint8_t byte2);
// find descriptor that match byte1 (type) and byte2
uint8_t const * tu_desc_find3(uint8_t const* desc, uint8_t const* end, uint8_t byte1, uint8_t byte2, uint8_t byte3);
#ifdef __cplusplus
}
#endif