diff options
Diffstat (limited to 'tmk_core/ring_buffer.h')
| -rw-r--r-- | tmk_core/ring_buffer.h | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/tmk_core/ring_buffer.h b/tmk_core/ring_buffer.h deleted file mode 100644 index 8f887c8f7..000000000 --- a/tmk_core/ring_buffer.h +++ /dev/null | |||
| @@ -1,45 +0,0 @@ | |||
| 1 | #pragma once | ||
| 2 | |||
| 3 | /*-------------------------------------------------------------------- | ||
| 4 | * Ring buffer to store scan codes from keyboard | ||
| 5 | *------------------------------------------------------------------*/ | ||
| 6 | #ifndef RBUF_SIZE | ||
| 7 | # define RBUF_SIZE 32 | ||
| 8 | #endif | ||
| 9 | #include <util/atomic.h> | ||
| 10 | #include <stdint.h> | ||
| 11 | #include <stdbool.h> | ||
| 12 | static uint8_t rbuf[RBUF_SIZE]; | ||
| 13 | static uint8_t rbuf_head = 0; | ||
| 14 | static uint8_t rbuf_tail = 0; | ||
| 15 | static inline bool rbuf_enqueue(uint8_t data) { | ||
| 16 | bool ret = false; | ||
| 17 | ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { | ||
| 18 | uint8_t next = (rbuf_head + 1) % RBUF_SIZE; | ||
| 19 | if (next != rbuf_tail) { | ||
| 20 | rbuf[rbuf_head] = data; | ||
| 21 | rbuf_head = next; | ||
| 22 | ret = true; | ||
| 23 | } | ||
| 24 | } | ||
| 25 | return ret; | ||
| 26 | } | ||
| 27 | static inline uint8_t rbuf_dequeue(void) { | ||
| 28 | uint8_t val = 0; | ||
| 29 | ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { | ||
| 30 | if (rbuf_head != rbuf_tail) { | ||
| 31 | val = rbuf[rbuf_tail]; | ||
| 32 | rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE; | ||
| 33 | } | ||
| 34 | } | ||
| 35 | |||
| 36 | return val; | ||
| 37 | } | ||
| 38 | static inline bool rbuf_has_data(void) { | ||
| 39 | bool has_data; | ||
| 40 | ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { has_data = (rbuf_head != rbuf_tail); } | ||
| 41 | return has_data; | ||
| 42 | } | ||
| 43 | static inline void rbuf_clear(void) { | ||
| 44 | ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { rbuf_head = rbuf_tail = 0; } | ||
| 45 | } | ||
