Junichi Katsu / SimpleIoTBoardLib

Simple IoT Board用のライブラリです。 ESP8266ライブラリの軽量化 送信のみのソフトシリアルライブラリを含んでいます。

Dependents:   SITB_HttpGetSample SITB_IFTTTSample SITB_INA226PRC AmbientExampleSITB ... more

ESP8266InterfaceTiny/ESP8266/CBuffer.h@0:890c12951e96, 2015-11-15 (annotated)

Committer:
jksoft
Date:
Sun Nov 15 13:36:44 2015 +0000
Revision:
0:890c12951e96
??

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jksoft 0:890c12951e96 1 /* Copyright (C) 2012 mbed.org, MIT License
jksoft 0:890c12951e96 2 *
jksoft 0:890c12951e96 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
jksoft 0:890c12951e96 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
jksoft 0:890c12951e96 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
jksoft 0:890c12951e96 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
jksoft 0:890c12951e96 7 * furnished to do so, subject to the following conditions:
jksoft 0:890c12951e96 8 *
jksoft 0:890c12951e96 9 * The above copyright notice and this permission notice shall be included in all copies or
jksoft 0:890c12951e96 10 * substantial portions of the Software.
jksoft 0:890c12951e96 11 *
jksoft 0:890c12951e96 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
jksoft 0:890c12951e96 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
jksoft 0:890c12951e96 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
jksoft 0:890c12951e96 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jksoft 0:890c12951e96 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
jksoft 0:890c12951e96 17 */
jksoft 0:890c12951e96 18
jksoft 0:890c12951e96 19 #ifndef CIRCBUFFER_H_
jksoft 0:890c12951e96 20 #define CIRCBUFFER_H_
jksoft 0:890c12951e96 21
jksoft 0:890c12951e96 22 template <class T>
jksoft 0:890c12951e96 23 class CircBuffer {
jksoft 0:890c12951e96 24 public:
jksoft 0:890c12951e96 25 CircBuffer(int length) {
jksoft 0:890c12951e96 26 write = 0;
jksoft 0:890c12951e96 27 read = 0;
jksoft 0:890c12951e96 28 size = length + 1;
jksoft 0:890c12951e96 29 buf = (T *)malloc(size * sizeof(T));
jksoft 0:890c12951e96 30 };
jksoft 0:890c12951e96 31
jksoft 0:890c12951e96 32 bool isFull() {
jksoft 0:890c12951e96 33 return (((write + 1) % size) == read);
jksoft 0:890c12951e96 34 };
jksoft 0:890c12951e96 35
jksoft 0:890c12951e96 36 bool isEmpty() {
jksoft 0:890c12951e96 37 return (read == write);
jksoft 0:890c12951e96 38 };
jksoft 0:890c12951e96 39
jksoft 0:890c12951e96 40 void queue(T k) {
jksoft 0:890c12951e96 41 if (isFull()) {
jksoft 0:890c12951e96 42 read++;
jksoft 0:890c12951e96 43 read %= size;
jksoft 0:890c12951e96 44 }
jksoft 0:890c12951e96 45 buf[write++] = k;
jksoft 0:890c12951e96 46 write %= size;
jksoft 0:890c12951e96 47 }
jksoft 0:890c12951e96 48
jksoft 0:890c12951e96 49 void flush() {
jksoft 0:890c12951e96 50 read = 0;
jksoft 0:890c12951e96 51 write = 0;
jksoft 0:890c12951e96 52 }
jksoft 0:890c12951e96 53
jksoft 0:890c12951e96 54
jksoft 0:890c12951e96 55 uint32_t available() {
jksoft 0:890c12951e96 56 return (write >= read) ? write - read : size - read + write;
jksoft 0:890c12951e96 57 };
jksoft 0:890c12951e96 58
jksoft 0:890c12951e96 59 bool dequeue(T * c) {
jksoft 0:890c12951e96 60 bool empty = isEmpty();
jksoft 0:890c12951e96 61 if (!empty) {
jksoft 0:890c12951e96 62 *c = buf[read++];
jksoft 0:890c12951e96 63 read %= size;
jksoft 0:890c12951e96 64 }
jksoft 0:890c12951e96 65 return(!empty);
jksoft 0:890c12951e96 66 };
jksoft 0:890c12951e96 67
jksoft 0:890c12951e96 68 private:
jksoft 0:890c12951e96 69 volatile uint32_t write;
jksoft 0:890c12951e96 70 volatile uint32_t read;
jksoft 0:890c12951e96 71 uint32_t size;
jksoft 0:890c12951e96 72 T * buf;
jksoft 0:890c12951e96 73 };
jksoft 0:890c12951e96 74
jksoft 0:890c12951e96 75 #endif