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authorJoel Challis <git@zvecr.com>2020-05-03 01:25:39 +0100
committerGitHub <noreply@github.com>2020-05-03 01:25:39 +0100
commit5f82b0782f90645eee5926691dcc0ec617d0dff4 (patch)
treea741b6b432d31c477d3781bde487b13ffb2b3d8a /tmk_core/ring_buffer.h
parent2e6959ed874f19a5db9ee2b4db08c2bc9ec815d2 (diff)
downloadqmk_firmware-5f82b0782f90645eee5926691dcc0ec617d0dff4.tar.gz
qmk_firmware-5f82b0782f90645eee5926691dcc0ec617d0dff4.zip
Initial vusb console support (#8559)
Diffstat (limited to 'tmk_core/ring_buffer.h')
-rw-r--r--tmk_core/ring_buffer.h13
1 files changed, 9 insertions, 4 deletions
diff --git a/tmk_core/ring_buffer.h b/tmk_core/ring_buffer.h
index 6bea3509b..25fab638e 100644
--- a/tmk_core/ring_buffer.h
+++ b/tmk_core/ring_buffer.h
@@ -3,21 +3,26 @@
3/*-------------------------------------------------------------------- 3/*--------------------------------------------------------------------
4 * Ring buffer to store scan codes from keyboard 4 * Ring buffer to store scan codes from keyboard
5 *------------------------------------------------------------------*/ 5 *------------------------------------------------------------------*/
6#define RBUF_SIZE 32 6#ifndef RBUF_SIZE
7# define RBUF_SIZE 32
8#endif
7#include <util/atomic.h> 9#include <util/atomic.h>
10#include <stdint.h>
11#include <stdbool.h>
8static uint8_t rbuf[RBUF_SIZE]; 12static uint8_t rbuf[RBUF_SIZE];
9static uint8_t rbuf_head = 0; 13static uint8_t rbuf_head = 0;
10static uint8_t rbuf_tail = 0; 14static uint8_t rbuf_tail = 0;
11static inline void rbuf_enqueue(uint8_t data) { 15static inline bool rbuf_enqueue(uint8_t data) {
16 bool ret = false;
12 ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { 17 ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
13 uint8_t next = (rbuf_head + 1) % RBUF_SIZE; 18 uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
14 if (next != rbuf_tail) { 19 if (next != rbuf_tail) {
15 rbuf[rbuf_head] = data; 20 rbuf[rbuf_head] = data;
16 rbuf_head = next; 21 rbuf_head = next;
17 } else { 22 ret = true;
18 print("rbuf: full\n");
19 } 23 }
20 } 24 }
25 return ret;
21} 26}
22static inline uint8_t rbuf_dequeue(void) { 27static inline uint8_t rbuf_dequeue(void) {
23 uint8_t val = 0; 28 uint8_t val = 0;