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Diffstat (limited to 'quantum/serial_link/protocol/triple_buffered_object.c')
-rw-r--r--quantum/serial_link/protocol/triple_buffered_object.c77
1 files changed, 0 insertions, 77 deletions
diff --git a/quantum/serial_link/protocol/triple_buffered_object.c b/quantum/serial_link/protocol/triple_buffered_object.c
deleted file mode 100644
index e0c6d702a5..0000000000
--- a/quantum/serial_link/protocol/triple_buffered_object.c
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
-The MIT License (MIT)
-
-Copyright (c) 2016 Fred Sundvik
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-*/
-
-#include "serial_link/protocol/triple_buffered_object.h"
-#include "serial_link/system/serial_link.h"
-#include <stdbool.h>
-#include <stddef.h>
-
-#define GET_READ_INDEX() object->state & 3
-#define GET_WRITE_INDEX() (object->state >> 2) & 3
-#define GET_SHARED_INDEX() (object->state >> 4) & 3
-#define GET_DATA_AVAILABLE() (object->state >> 6) & 1
-
-#define SET_READ_INDEX(i) object->state = ((object->state & ~3) | i)
-#define SET_WRITE_INDEX(i) object->state = ((object->state & ~(3 << 2)) | (i << 2))
-#define SET_SHARED_INDEX(i) object->state = ((object->state & ~(3 << 4)) | (i << 4))
-#define SET_DATA_AVAILABLE(i) object->state = ((object->state & ~(1 << 6)) | (i << 6))
-
-void triple_buffer_init(triple_buffer_object_t* object) {
- object->state = 0;
- SET_WRITE_INDEX(0);
- SET_READ_INDEX(1);
- SET_SHARED_INDEX(2);
- SET_DATA_AVAILABLE(0);
-}
-
-void* triple_buffer_read_internal(uint16_t object_size, triple_buffer_object_t* object) {
- serial_link_lock();
- if (GET_DATA_AVAILABLE()) {
- uint8_t shared_index = GET_SHARED_INDEX();
- uint8_t read_index = GET_READ_INDEX();
- SET_READ_INDEX(shared_index);
- SET_SHARED_INDEX(read_index);
- SET_DATA_AVAILABLE(false);
- serial_link_unlock();
- return object->buffer + object_size * shared_index;
- } else {
- serial_link_unlock();
- return NULL;
- }
-}
-
-void* triple_buffer_begin_write_internal(uint16_t object_size, triple_buffer_object_t* object) {
- uint8_t write_index = GET_WRITE_INDEX();
- return object->buffer + object_size * write_index;
-}
-
-void triple_buffer_end_write_internal(triple_buffer_object_t* object) {
- serial_link_lock();
- uint8_t shared_index = GET_SHARED_INDEX();
- uint8_t write_index = GET_WRITE_INDEX();
- SET_SHARED_INDEX(write_index);
- SET_WRITE_INDEX(shared_index);
- SET_DATA_AVAILABLE(true);
- serial_link_unlock();
-}