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Implementation done, yet to be tested.

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This commit is contained in:
Reinhard Panhuber
2020-09-14 18:24:08 +02:00
parent 62a8e39c9b
commit 349c0f640e
2 changed files with 362 additions and 130 deletions
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71
src/common/tusb_fifo.h
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@@ -52,14 +52,16 @@
*/
typedef struct
{
uint8_t* buffer ; ///< buffer pointer
uint16_t depth ; ///< max items
uint16_t item_size ; ///< size of each item
bool overwritable ;
uint8_t* buffer ; ///< buffer pointer
uint16_t depth ; ///< max items
uint16_t item_size ; ///< size of each item
bool overwritable ;
volatile uint16_t count ; ///< number of items in queue
volatile uint16_t wr_idx ; ///< write pointer
volatile uint16_t rd_idx ; ///< read pointer
uint16_t non_used_index_space ; ///< required for non-power-of-two buffer length
uint16_t max_pointer_idx ; ///< maximum absolute pointer index
volatile uint16_t wr_idx ; ///< write pointer
volatile uint16_t rd_idx ; ///< read pointer
#if CFG_FIFO_MUTEX
tu_fifo_mutex_t mutex;
@@ -67,13 +69,15 @@ typedef struct
} tu_fifo_t;
#define TU_FIFO_DEF(_name, _depth, _type, _overwritable) \
uint8_t _name##_buf[_depth*sizeof(_type)]; \
tu_fifo_t _name = { \
.buffer = _name##_buf, \
.depth = _depth, \
.item_size = sizeof(_type), \
.overwritable = _overwritable, \
#define TU_FIFO_DEF(_name, _depth, _type, _overwritable) \
uint8_t _name##_buf[_depth*sizeof(_type)]; \
tu_fifo_t _name = { \
.buffer = _name##_buf, \
.depth = _depth, \
.item_size = sizeof(_type), \
.overwritable = _overwritable, \
.non_used_index_space = (2^16-1) % _depth, \
.max_pointer_idx = (2^16-1) - ((2^16-1) % _depth), \
}
bool tu_fifo_clear(tu_fifo_t *f);
@@ -86,39 +90,28 @@ static inline void tu_fifo_config_mutex(tu_fifo_t *f, tu_fifo_mutex_t mutex_hdl)
}
#endif
bool tu_fifo_write (tu_fifo_t* f, void const * p_data);
uint16_t tu_fifo_write_n (tu_fifo_t* f, void const * p_data, uint16_t count);
bool tu_fifo_write (tu_fifo_t* f, void const * p_data);
uint16_t tu_fifo_write_n (tu_fifo_t* f, void const * p_data, uint16_t count);
bool tu_fifo_read (tu_fifo_t* f, void * p_buffer);
uint16_t tu_fifo_read_n (tu_fifo_t* f, void * p_buffer, uint16_t count);
bool tu_fifo_read (tu_fifo_t* f, void * p_buffer);
uint16_t tu_fifo_read_n (tu_fifo_t* f, void * p_buffer, uint16_t count);
bool tu_fifo_peek_at (tu_fifo_t* f, uint16_t pos, void * p_buffer);
bool tu_fifo_peek_at (tu_fifo_t* f, uint16_t pos, void * p_buffer);
uint16_t tu_fifo_peek_at_n (tu_fifo_t* f, uint16_t pos, void * p_buffer, uint16_t n);
uint16_t tu_fifo_count (tu_fifo_t* f);
void tu_fifo_correct_read_pointer (tu_fifo_t* f);
bool tu_fifo_empty (tu_fifo_t* f);
bool tu_fifo_full (tu_fifo_t* f);
uint16_t tu_fifo_remaining (tu_fifo_t* f);
bool tu_fifo_overflow (tu_fifo_t* f);
void tu_fifo_correct_read_pointer (tu_fifo_t* f);
static inline bool tu_fifo_peek(tu_fifo_t* f, void * p_buffer)
{
return tu_fifo_peek_at(f, 0, p_buffer);
}
static inline bool tu_fifo_empty(tu_fifo_t* f)
{
return (f->count == 0);
}
static inline bool tu_fifo_full(tu_fifo_t* f)
{
return (f->count == f->depth);
}
static inline uint16_t tu_fifo_count(tu_fifo_t* f)
{
return f->count;
}
static inline uint16_t tu_fifo_remaining(tu_fifo_t* f)
{
return f->depth - f->count;
}
static inline uint16_t tu_fifo_depth(tu_fifo_t* f)
{
return f->depth;