cliff Hong / WizFi310Interface

ThingPlug Test

Dependents:   WizFi310_ThingPlug_Test WizFi310_ThingPlug_Test_P

Fork of WizFi310Interface by WIZnet

WizFi310/CBuffer.h@12:77cd2133312c, 2017-11-15 (annotated)

Committer:
cliff1
Date:
Wed Nov 15 06:28:23 2017 +0000
Revision:
12:77cd2133312c
Parent:
0:df571f8f8c03 
20171115_2;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jehoon 0:df571f8f8c03 1 /* Copyright (C) 2012 mbed.org, MIT License
jehoon 0:df571f8f8c03 2 *
jehoon 0:df571f8f8c03 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
jehoon 0:df571f8f8c03 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
jehoon 0:df571f8f8c03 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
jehoon 0:df571f8f8c03 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
jehoon 0:df571f8f8c03 7 * furnished to do so, subject to the following conditions:
jehoon 0:df571f8f8c03 8 *
jehoon 0:df571f8f8c03 9 * The above copyright notice and this permission notice shall be included in all copies or
jehoon 0:df571f8f8c03 10 * substantial portions of the Software.
jehoon 0:df571f8f8c03 11 *
jehoon 0:df571f8f8c03 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
jehoon 0:df571f8f8c03 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
jehoon 0:df571f8f8c03 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
jehoon 0:df571f8f8c03 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jehoon 0:df571f8f8c03 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
jehoon 0:df571f8f8c03 17 */
jehoon 0:df571f8f8c03 18
jehoon 0:df571f8f8c03 19 #ifndef CIRCBUFFER_H_
jehoon 0:df571f8f8c03 20 #define CIRCBUFFER_H_
jehoon 0:df571f8f8c03 21
jehoon 0:df571f8f8c03 22 template <class T>
jehoon 0:df571f8f8c03 23 class CircBuffer {
jehoon 0:df571f8f8c03 24 public:
jehoon 0:df571f8f8c03 25 CircBuffer(int length) {
jehoon 0:df571f8f8c03 26 write = 0;
jehoon 0:df571f8f8c03 27 read = 0;
jehoon 0:df571f8f8c03 28 size = length + 1;
jehoon 0:df571f8f8c03 29 buf = (T *)malloc(size * sizeof(T));
jehoon 0:df571f8f8c03 30 if (buf == NULL)
jehoon 0:df571f8f8c03 31 error("Can't allocate memory");
jehoon 0:df571f8f8c03 32 };
jehoon 0:df571f8f8c03 33
jehoon 0:df571f8f8c03 34 bool isFull() {
jehoon 0:df571f8f8c03 35 return (((write + 1) % size) == read);
jehoon 0:df571f8f8c03 36 };
jehoon 0:df571f8f8c03 37
jehoon 0:df571f8f8c03 38 bool isEmpty() {
jehoon 0:df571f8f8c03 39 return (read == write);
jehoon 0:df571f8f8c03 40 };
jehoon 0:df571f8f8c03 41
jehoon 0:df571f8f8c03 42 void queue(T k) {
jehoon 0:df571f8f8c03 43 if (isFull()) {
jehoon 0:df571f8f8c03 44 // read++;
jehoon 0:df571f8f8c03 45 // read %= size;
jehoon 0:df571f8f8c03 46 return;
jehoon 0:df571f8f8c03 47 }
jehoon 0:df571f8f8c03 48 buf[write++] = k;
jehoon 0:df571f8f8c03 49 write %= size;
jehoon 0:df571f8f8c03 50 }
jehoon 0:df571f8f8c03 51
jehoon 0:df571f8f8c03 52 void flush() {
jehoon 0:df571f8f8c03 53 read = 0;
jehoon 0:df571f8f8c03 54 write = 0;
jehoon 0:df571f8f8c03 55 }
jehoon 0:df571f8f8c03 56
jehoon 0:df571f8f8c03 57
jehoon 0:df571f8f8c03 58 uint32_t available() {
jehoon 0:df571f8f8c03 59 return (write >= read) ? write - read : size - read + write;
jehoon 0:df571f8f8c03 60 };
jehoon 0:df571f8f8c03 61
jehoon 0:df571f8f8c03 62 bool dequeue(T * c) {
jehoon 0:df571f8f8c03 63 bool empty = isEmpty();
jehoon 0:df571f8f8c03 64 if (!empty) {
jehoon 0:df571f8f8c03 65 *c = buf[read++];
jehoon 0:df571f8f8c03 66 read %= size;
jehoon 0:df571f8f8c03 67 }
jehoon 0:df571f8f8c03 68 return(!empty);
jehoon 0:df571f8f8c03 69 };
jehoon 0:df571f8f8c03 70
jehoon 0:df571f8f8c03 71 private:
jehoon 0:df571f8f8c03 72 volatile uint32_t write;
jehoon 0:df571f8f8c03 73 volatile uint32_t read;
jehoon 0:df571f8f8c03 74 uint32_t size;
jehoon 0:df571f8f8c03 75 T * buf;
jehoon 0:df571f8f8c03 76 };
jehoon 0:df571f8f8c03 77
jehoon 0:df571f8f8c03 78 #endif