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Merge remote-tracking branch 'hathach/master' into cdc_without_dtr

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This commit is contained in:
Jan Dümpelmann
2020-11-04 17:11:01 +01:00
parent b15c209805 075334af80
commit af9f0f1cd6
217 changed files with 8802 additions and 1435 deletions
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90
src/common/tusb_fifo.h
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@@ -31,6 +31,15 @@
#ifndef _TUSB_FIFO_H_
#define _TUSB_FIFO_H_
// Due to the use of unmasked pointers, this FIFO does not suffer from loosing
// one item slice. Furthermore, write and read operations are completely
// decoupled as write and read functions do not modify a common state. Henceforth,
// writing or reading from the FIFO within an ISR is safe as long as no other
// process (thread or ISR) interferes.
// Also, this FIFO is ready to be used in combination with a DMA as the write and
// read pointers can be updated from within a DMA ISR. Overflows are detectable
// within a certain number (see tu_fifo_overflow()).
// mutex is only needed for RTOS
// for OS None, we don't get preempted
#define CFG_FIFO_MUTEX (CFG_TUSB_OS != OPT_OS_NONE)
@@ -39,7 +48,7 @@
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
extern "C" {
#endif
#if CFG_FIFO_MUTEX
@@ -52,14 +61,16 @@
*/
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;
@@ -67,14 +78,16 @@ 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, \
.max_pointer_idx = 2*_depth-1, \
.non_used_index_space = 0xFFFF - 2*_depth-1, \
}
bool tu_fifo_change_mode(tu_fifo_t *f, bool overwritable);
bool tu_fifo_clear(tu_fifo_t *f);
@@ -87,46 +100,39 @@ 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);
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_overflowed (tu_fifo_t* f);
void tu_fifo_correct_read_pointer (tu_fifo_t* f);
// Pointer modifications intended to be used in combinations with DMAs.
// USE WITH CARE - NO SAFTY CHECKS CONDUCTED HERE! NOT MUTEX PROTECTED!
void tu_fifo_advance_write_pointer (tu_fifo_t *f, uint16_t n);
void tu_fifo_advance_read_pointer (tu_fifo_t *f, uint16_t n);
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;
}
#ifdef __cplusplus
}
}
#endif
#endif /* _TUSB_FIFO_H_ */