Toyomasa Watarai / type-yd-driver

Murata Type YD Wi-Fi driver

Dependents:   easy-connect-type-yd

SNICInterface/SNIC/CBuffer.h@0:35a2186cf186, 2017-07-12 (annotated)

Committer:
MACRUM
Date:
Wed Jul 12 10:49:10 2017 +0000
Revision:
0:35a2186cf186
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MACRUM 0:35a2186cf186 1 /* Copyright (C) 2012 mbed.org, MIT License
MACRUM 0:35a2186cf186 2 *
MACRUM 0:35a2186cf186 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
MACRUM 0:35a2186cf186 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
MACRUM 0:35a2186cf186 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
MACRUM 0:35a2186cf186 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
MACRUM 0:35a2186cf186 7 * furnished to do so, subject to the following conditions:
MACRUM 0:35a2186cf186 8 *
MACRUM 0:35a2186cf186 9 * The above copyright notice and this permission notice shall be included in all copies or
MACRUM 0:35a2186cf186 10 * substantial portions of the Software.
MACRUM 0:35a2186cf186 11 *
MACRUM 0:35a2186cf186 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
MACRUM 0:35a2186cf186 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
MACRUM 0:35a2186cf186 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
MACRUM 0:35a2186cf186 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
MACRUM 0:35a2186cf186 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
MACRUM 0:35a2186cf186 17 */
MACRUM 0:35a2186cf186 18
MACRUM 0:35a2186cf186 19 #ifndef CIRCBUFFER_H_
MACRUM 0:35a2186cf186 20 #define CIRCBUFFER_H_
MACRUM 0:35a2186cf186 21
MACRUM 0:35a2186cf186 22 template <class T>
MACRUM 0:35a2186cf186 23 class CircBuffer {
MACRUM 0:35a2186cf186 24 public:
MACRUM 0:35a2186cf186 25 CircBuffer(int length) {
MACRUM 0:35a2186cf186 26 write = 0;
MACRUM 0:35a2186cf186 27 read = 0;
MACRUM 0:35a2186cf186 28 size = length + 1;
MACRUM 0:35a2186cf186 29 buf = (T *)malloc(size * sizeof(T));
MACRUM 0:35a2186cf186 30 };
MACRUM 0:35a2186cf186 31
MACRUM 0:35a2186cf186 32 bool isFull() {
MACRUM 0:35a2186cf186 33 return (((write + 1) % size) == read);
MACRUM 0:35a2186cf186 34 };
MACRUM 0:35a2186cf186 35
MACRUM 0:35a2186cf186 36 bool isEmpty() {
MACRUM 0:35a2186cf186 37 return (read == write);
MACRUM 0:35a2186cf186 38 };
MACRUM 0:35a2186cf186 39
MACRUM 0:35a2186cf186 40 void queue(T k) {
MACRUM 0:35a2186cf186 41
MACRUM 0:35a2186cf186 42 if (isFull()) {
MACRUM 0:35a2186cf186 43 read++;
MACRUM 0:35a2186cf186 44 read %= size;
MACRUM 0:35a2186cf186 45 }
MACRUM 0:35a2186cf186 46 buf[write++] = k;
MACRUM 0:35a2186cf186 47 write %= size;
MACRUM 0:35a2186cf186 48 }
MACRUM 0:35a2186cf186 49
MACRUM 0:35a2186cf186 50 void flush() {
MACRUM 0:35a2186cf186 51 read = 0;
MACRUM 0:35a2186cf186 52 write = 0;
MACRUM 0:35a2186cf186 53 }
MACRUM 0:35a2186cf186 54
MACRUM 0:35a2186cf186 55
MACRUM 0:35a2186cf186 56 uint32_t available() {
MACRUM 0:35a2186cf186 57 return (write >= read) ? write - read : size - read + write;
MACRUM 0:35a2186cf186 58 };
MACRUM 0:35a2186cf186 59
MACRUM 0:35a2186cf186 60 bool dequeue(T * c) {
MACRUM 0:35a2186cf186 61 bool empty = isEmpty();
MACRUM 0:35a2186cf186 62 if (!empty) {
MACRUM 0:35a2186cf186 63 *c = buf[read++];
MACRUM 0:35a2186cf186 64 read %= size;
MACRUM 0:35a2186cf186 65 }
MACRUM 0:35a2186cf186 66 return(!empty);
MACRUM 0:35a2186cf186 67 };
MACRUM 0:35a2186cf186 68
MACRUM 0:35a2186cf186 69 private:
MACRUM 0:35a2186cf186 70 volatile uint32_t write;
MACRUM 0:35a2186cf186 71 volatile uint32_t read;
MACRUM 0:35a2186cf186 72 uint32_t size;
MACRUM 0:35a2186cf186 73 T * buf;
MACRUM 0:35a2186cf186 74 };
MACRUM 0:35a2186cf186 75
MACRUM 0:35a2186cf186 76 #endif
MACRUM 0:35a2186cf186 77