diff options
Diffstat (limited to 'protocol/lufa/midi/bytequeue/bytequeue.c')
-rwxr-xr-x | protocol/lufa/midi/bytequeue/bytequeue.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/protocol/lufa/midi/bytequeue/bytequeue.c b/protocol/lufa/midi/bytequeue/bytequeue.c deleted file mode 100755 index e434956328..0000000000 --- a/protocol/lufa/midi/bytequeue/bytequeue.c +++ /dev/null @@ -1,65 +0,0 @@ -//this is a single reader [maybe multiple writer?] byte queue -//Copyright 2008 Alex Norman -//writen by Alex Norman -// -//This file is part of avr-bytequeue. -// -//avr-bytequeue is free software: you can redistribute it and/or modify -//it under the terms of the GNU General Public License as published by -//the Free Software Foundation, either version 3 of the License, or -//(at your option) any later version. -// -//avr-bytequeue is distributed in the hope that it will be useful, -//but WITHOUT ANY WARRANTY; without even the implied warranty of -//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -//GNU General Public License for more details. -// -//You should have received a copy of the GNU General Public License -//along with avr-bytequeue. If not, see <http://www.gnu.org/licenses/>. - -#include "bytequeue.h" -#include "interrupt_setting.h" - -void bytequeue_init(byteQueue_t * queue, uint8_t * dataArray, byteQueueIndex_t arrayLen){ - queue->length = arrayLen; - queue->data = dataArray; - queue->start = queue->end = 0; -} - -bool bytequeue_enqueue(byteQueue_t * queue, uint8_t item){ - interrupt_setting_t setting = store_and_clear_interrupt(); - //full - if(((queue->end + 1) % queue->length) == queue->start){ - restore_interrupt_setting(setting); - return false; - } else { - queue->data[queue->end] = item; - queue->end = (queue->end + 1) % queue->length; - restore_interrupt_setting(setting); - return true; - } -} - -byteQueueIndex_t bytequeue_length(byteQueue_t * queue){ - byteQueueIndex_t len; - interrupt_setting_t setting = store_and_clear_interrupt(); - if(queue->end >= queue->start) - len = queue->end - queue->start; - else - len = (queue->length - queue->start) + queue->end; - restore_interrupt_setting(setting); - return len; -} - -//we don't need to avoid interrupts if there is only one reader -uint8_t bytequeue_get(byteQueue_t * queue, byteQueueIndex_t index){ - return queue->data[(queue->start + index) % queue->length]; -} - -//we just update the start index to remove elements -void bytequeue_remove(byteQueue_t * queue, byteQueueIndex_t numToRemove){ - interrupt_setting_t setting = store_and_clear_interrupt(); - queue->start = (queue->start + numToRemove) % queue->length; - restore_interrupt_setting(setting); -} - |