Sergei G / NetworkServices

NetworkServices with NUCLEO-L476RG and W5500 by SeeedStudio stack.

Dependents:   coap-example Borsch coap-example

Fork of NetworkServices by AMETEK Powervar

HTTPD/CBuffer.h@17:c976088bf39d, 2017-07-05 (annotated)

Committer:
sgnezdov
Date:
Wed Jul 05 18:34:39 2017 +0000
Revision:
17:c976088bf39d
Parent:
15:14382459c8b7 
Changed setup interface to take MAC address, because W5500 may use software defined MAC when obtaining IP.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dgriffin65 15:14382459c8b7 1 /* Copyright (C) 2012 mbed.org, MIT License
dgriffin65 15:14382459c8b7 2 *
dgriffin65 15:14382459c8b7 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
dgriffin65 15:14382459c8b7 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
dgriffin65 15:14382459c8b7 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
dgriffin65 15:14382459c8b7 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
dgriffin65 15:14382459c8b7 7 * furnished to do so, subject to the following conditions:
dgriffin65 15:14382459c8b7 8 *
dgriffin65 15:14382459c8b7 9 * The above copyright notice and this permission notice shall be included in all copies or
dgriffin65 15:14382459c8b7 10 * substantial portions of the Software.
dgriffin65 15:14382459c8b7 11 *
dgriffin65 15:14382459c8b7 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
dgriffin65 15:14382459c8b7 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
dgriffin65 15:14382459c8b7 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
dgriffin65 15:14382459c8b7 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dgriffin65 15:14382459c8b7 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
dgriffin65 15:14382459c8b7 17 */
dgriffin65 15:14382459c8b7 18
dgriffin65 15:14382459c8b7 19 #ifndef CIRCBUFFER_H_
dgriffin65 15:14382459c8b7 20 #define CIRCBUFFER_H_
dgriffin65 15:14382459c8b7 21
dgriffin65 15:14382459c8b7 22 template <class T>
dgriffin65 15:14382459c8b7 23 class CircBuffer {
dgriffin65 15:14382459c8b7 24 public:
dgriffin65 15:14382459c8b7 25 CircBuffer(int length) {
dgriffin65 15:14382459c8b7 26 write = 0;
dgriffin65 15:14382459c8b7 27 read = 0;
dgriffin65 15:14382459c8b7 28 size = length + 1;
dgriffin65 15:14382459c8b7 29 buf = (T *)malloc(size * sizeof(T));
dgriffin65 15:14382459c8b7 30 };
dgriffin65 15:14382459c8b7 31
dgriffin65 15:14382459c8b7 32 bool isFull() {
dgriffin65 15:14382459c8b7 33 return (((write + 1) % size) == read);
dgriffin65 15:14382459c8b7 34 };
dgriffin65 15:14382459c8b7 35
dgriffin65 15:14382459c8b7 36 bool isEmpty() {
dgriffin65 15:14382459c8b7 37 return (read == write);
dgriffin65 15:14382459c8b7 38 };
dgriffin65 15:14382459c8b7 39
dgriffin65 15:14382459c8b7 40 void queue(T k) {
dgriffin65 15:14382459c8b7 41 if (isFull()) {
dgriffin65 15:14382459c8b7 42 read++;
dgriffin65 15:14382459c8b7 43 read %= size;
dgriffin65 15:14382459c8b7 44 }
dgriffin65 15:14382459c8b7 45 buf[write++] = k;
dgriffin65 15:14382459c8b7 46 write %= size;
dgriffin65 15:14382459c8b7 47 }
dgriffin65 15:14382459c8b7 48
dgriffin65 15:14382459c8b7 49 void flush() {
dgriffin65 15:14382459c8b7 50 read = 0;
dgriffin65 15:14382459c8b7 51 write = 0;
dgriffin65 15:14382459c8b7 52 }
dgriffin65 15:14382459c8b7 53
dgriffin65 15:14382459c8b7 54
dgriffin65 15:14382459c8b7 55 uint32_t available() {
dgriffin65 15:14382459c8b7 56 return (write >= read) ? write - read : size - read + write;
dgriffin65 15:14382459c8b7 57 };
dgriffin65 15:14382459c8b7 58
dgriffin65 15:14382459c8b7 59 bool dequeue(T * c) {
dgriffin65 15:14382459c8b7 60 bool empty = isEmpty();
dgriffin65 15:14382459c8b7 61 if (!empty) {
dgriffin65 15:14382459c8b7 62 *c = buf[read++];
dgriffin65 15:14382459c8b7 63 read %= size;
dgriffin65 15:14382459c8b7 64 }
dgriffin65 15:14382459c8b7 65 return(!empty);
dgriffin65 15:14382459c8b7 66 };
dgriffin65 15:14382459c8b7 67
dgriffin65 15:14382459c8b7 68 private:
dgriffin65 15:14382459c8b7 69 volatile uint32_t write;
dgriffin65 15:14382459c8b7 70 volatile uint32_t read;
dgriffin65 15:14382459c8b7 71 uint32_t size;
dgriffin65 15:14382459c8b7 72 T * buf;
dgriffin65 15:14382459c8b7 73 };
dgriffin65 15:14382459c8b7 74
dgriffin65 15:14382459c8b7 75 #endif