DongEun Koak / WizFi250Interface

This is library for using WizFi250

Dependents:   WebSocket_WizFi250_HelloWorld IFTTT_WizFi250 AxedaGo-WizFi250 FANARM_AP_udp_server ... more

WizFi250/CBuffer.h@22:f29dd1d06e89, 2015-11-18 (annotated)

Committer:
kaizen
Date:
Wed Nov 18 23:11:22 2015 +0000
Revision:
22:f29dd1d06e89
Parent:
0:f2039204c8f6 
Changed Antenna value

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kaizen 0:f2039204c8f6 1 /* Copyright (C) 2012 mbed.org, MIT License
kaizen 0:f2039204c8f6 2 *
kaizen 0:f2039204c8f6 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
kaizen 0:f2039204c8f6 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
kaizen 0:f2039204c8f6 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
kaizen 0:f2039204c8f6 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
kaizen 0:f2039204c8f6 7 * furnished to do so, subject to the following conditions:
kaizen 0:f2039204c8f6 8 *
kaizen 0:f2039204c8f6 9 * The above copyright notice and this permission notice shall be included in all copies or
kaizen 0:f2039204c8f6 10 * substantial portions of the Software.
kaizen 0:f2039204c8f6 11 *
kaizen 0:f2039204c8f6 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
kaizen 0:f2039204c8f6 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
kaizen 0:f2039204c8f6 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
kaizen 0:f2039204c8f6 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
kaizen 0:f2039204c8f6 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
kaizen 0:f2039204c8f6 17 */
kaizen 0:f2039204c8f6 18
kaizen 0:f2039204c8f6 19 #ifndef CIRCBUFFER_H_
kaizen 0:f2039204c8f6 20 #define CIRCBUFFER_H_
kaizen 0:f2039204c8f6 21
kaizen 0:f2039204c8f6 22 template <class T>
kaizen 0:f2039204c8f6 23 class CircBuffer {
kaizen 0:f2039204c8f6 24 public:
kaizen 0:f2039204c8f6 25 CircBuffer(int length) {
kaizen 0:f2039204c8f6 26 write = 0;
kaizen 0:f2039204c8f6 27 read = 0;
kaizen 0:f2039204c8f6 28 size = length + 1;
kaizen 0:f2039204c8f6 29 buf = (T *)malloc(size * sizeof(T));
kaizen 0:f2039204c8f6 30 if (buf == NULL)
kaizen 0:f2039204c8f6 31 error("Can't allocate memory");
kaizen 0:f2039204c8f6 32 };
kaizen 0:f2039204c8f6 33
kaizen 0:f2039204c8f6 34 bool isFull() {
kaizen 0:f2039204c8f6 35 return (((write + 1) % size) == read);
kaizen 0:f2039204c8f6 36 };
kaizen 0:f2039204c8f6 37
kaizen 0:f2039204c8f6 38 bool isEmpty() {
kaizen 0:f2039204c8f6 39 return (read == write);
kaizen 0:f2039204c8f6 40 };
kaizen 0:f2039204c8f6 41
kaizen 0:f2039204c8f6 42 void queue(T k) {
kaizen 0:f2039204c8f6 43 if (isFull()) {
kaizen 0:f2039204c8f6 44 // read++;
kaizen 0:f2039204c8f6 45 // read %= size;
kaizen 0:f2039204c8f6 46 return;
kaizen 0:f2039204c8f6 47 }
kaizen 0:f2039204c8f6 48 buf[write++] = k;
kaizen 0:f2039204c8f6 49 write %= size;
kaizen 0:f2039204c8f6 50 }
kaizen 0:f2039204c8f6 51
kaizen 0:f2039204c8f6 52 void flush() {
kaizen 0:f2039204c8f6 53 read = 0;
kaizen 0:f2039204c8f6 54 write = 0;
kaizen 0:f2039204c8f6 55 }
kaizen 0:f2039204c8f6 56
kaizen 0:f2039204c8f6 57
kaizen 0:f2039204c8f6 58 uint32_t available() {
kaizen 0:f2039204c8f6 59 return (write >= read) ? write - read : size - read + write;
kaizen 0:f2039204c8f6 60 };
kaizen 0:f2039204c8f6 61
kaizen 0:f2039204c8f6 62 bool dequeue(T * c) {
kaizen 0:f2039204c8f6 63 bool empty = isEmpty();
kaizen 0:f2039204c8f6 64 if (!empty) {
kaizen 0:f2039204c8f6 65 *c = buf[read++];
kaizen 0:f2039204c8f6 66 read %= size;
kaizen 0:f2039204c8f6 67 }
kaizen 0:f2039204c8f6 68 return(!empty);
kaizen 0:f2039204c8f6 69 };
kaizen 0:f2039204c8f6 70
kaizen 0:f2039204c8f6 71 private:
kaizen 0:f2039204c8f6 72 volatile uint32_t write;
kaizen 0:f2039204c8f6 73 volatile uint32_t read;
kaizen 0:f2039204c8f6 74 uint32_t size;
kaizen 0:f2039204c8f6 75 T * buf;
kaizen 0:f2039204c8f6 76 };
kaizen 0:f2039204c8f6 77
kaizen 0:f2039204c8f6 78 #endif