1 /* Copyright (c) 2010-2011 mbed.org, MIT License
3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
4 * and associated documentation files (the "Software"), to deal in the Software without
5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
7 * Software is furnished to do so, subject to the following conditions:
9 * The above copyright notice and this permission notice shall be included in all copies or
10 * substantial portions of the Software.
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 #include "platform_memory.h"
29 CircBuffer(int length
) {
33 buf
= (uint8_t*) AHB0
.alloc(size
* sizeof(T
));
37 return ((write
+ 1) % size
== read
);
41 return (read
== write
);
55 // pop last entered character
63 uint16_t available() {
65 uint16_t i
= (write
>= read
) ? write
- read
: (size
- read
) + write
;
70 return size
- available() - 1;
74 iprintf("[RingBuffer Sz:%2d Rd:%2d Wr:%2d Av:%2d Fr:%2d]\n", size
, read
, write
, available(), free());
78 bool empty
= isEmpty();
86 void peek(T
* c
, int offset
) {
87 int h
= (read
+ offset
) % size
;
96 volatile uint16_t write
;
97 volatile uint16_t read
;