Interplan IM920 library, 920MHz module
Dependents: IM920_sample IM920_SDlog IM920_sample IM920_sample3 ... more
IM920 ライブラリ
データモード、低速、長距離 の設定で通信するライブラリです。
920MHz無線モジュール
- mbedとモジュールとは、シリアル(TX,RX)、BUSY、RESET端子を接続します。
- モジュールはあらかじめ、コマンドでノード番号などを設定しておきます。
CBuffer.h@5:2fd9b1725283, 2015-04-24 (annotated)
- Committer:
- idealtechlab
- Date:
- Fri Apr 24 03:59:13 2015 +0000
- Revision:
- 5:2fd9b1725283
- Parent:
- 1:81b2fd407327
fix buffer over run
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
okini3939 | 0:d3ab05ed8142 | 1 | /* Copyright (C) 2012 mbed.org, MIT License |
okini3939 | 0:d3ab05ed8142 | 2 | * |
okini3939 | 0:d3ab05ed8142 | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
okini3939 | 0:d3ab05ed8142 | 4 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
okini3939 | 0:d3ab05ed8142 | 5 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
okini3939 | 0:d3ab05ed8142 | 6 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
okini3939 | 0:d3ab05ed8142 | 7 | * furnished to do so, subject to the following conditions: |
okini3939 | 0:d3ab05ed8142 | 8 | * |
okini3939 | 0:d3ab05ed8142 | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
okini3939 | 0:d3ab05ed8142 | 10 | * substantial portions of the Software. |
okini3939 | 0:d3ab05ed8142 | 11 | * |
okini3939 | 0:d3ab05ed8142 | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
okini3939 | 0:d3ab05ed8142 | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
okini3939 | 0:d3ab05ed8142 | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
okini3939 | 0:d3ab05ed8142 | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
okini3939 | 0:d3ab05ed8142 | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
okini3939 | 0:d3ab05ed8142 | 17 | */ |
okini3939 | 1:81b2fd407327 | 18 | /* |
okini3939 | 1:81b2fd407327 | 19 | * Modifyed by Suga |
okini3939 | 1:81b2fd407327 | 20 | */ |
okini3939 | 0:d3ab05ed8142 | 21 | |
okini3939 | 0:d3ab05ed8142 | 22 | #ifndef CIRCBUFFER_H_ |
okini3939 | 0:d3ab05ed8142 | 23 | #define CIRCBUFFER_H_ |
okini3939 | 0:d3ab05ed8142 | 24 | |
okini3939 | 0:d3ab05ed8142 | 25 | template <class T> |
okini3939 | 0:d3ab05ed8142 | 26 | class CircBuffer { |
okini3939 | 0:d3ab05ed8142 | 27 | public: |
okini3939 | 0:d3ab05ed8142 | 28 | CircBuffer(int length, void *addr = NULL) { |
okini3939 | 0:d3ab05ed8142 | 29 | write = 0; |
okini3939 | 0:d3ab05ed8142 | 30 | read = 0; |
okini3939 | 0:d3ab05ed8142 | 31 | size = length + 1; |
okini3939 | 0:d3ab05ed8142 | 32 | if (addr) { |
okini3939 | 0:d3ab05ed8142 | 33 | buf = (T *)addr; |
okini3939 | 0:d3ab05ed8142 | 34 | } else { |
okini3939 | 0:d3ab05ed8142 | 35 | buf = (T *)malloc(size * sizeof(T)); |
okini3939 | 0:d3ab05ed8142 | 36 | } |
okini3939 | 0:d3ab05ed8142 | 37 | if (buf == NULL) |
okini3939 | 0:d3ab05ed8142 | 38 | error("Can't allocate memory"); |
okini3939 | 0:d3ab05ed8142 | 39 | }; |
okini3939 | 0:d3ab05ed8142 | 40 | |
okini3939 | 0:d3ab05ed8142 | 41 | bool isFull() { |
okini3939 | 0:d3ab05ed8142 | 42 | return (((write + 1) % size) == read); |
okini3939 | 0:d3ab05ed8142 | 43 | }; |
okini3939 | 0:d3ab05ed8142 | 44 | |
okini3939 | 0:d3ab05ed8142 | 45 | bool isEmpty() { |
okini3939 | 0:d3ab05ed8142 | 46 | return (read == write); |
okini3939 | 0:d3ab05ed8142 | 47 | }; |
okini3939 | 0:d3ab05ed8142 | 48 | |
okini3939 | 0:d3ab05ed8142 | 49 | void queue(T k) { |
okini3939 | 0:d3ab05ed8142 | 50 | if (isFull()) { |
okini3939 | 0:d3ab05ed8142 | 51 | // read++; |
okini3939 | 0:d3ab05ed8142 | 52 | // read %= size; |
okini3939 | 0:d3ab05ed8142 | 53 | return; |
okini3939 | 0:d3ab05ed8142 | 54 | } |
okini3939 | 0:d3ab05ed8142 | 55 | buf[write++] = k; |
okini3939 | 0:d3ab05ed8142 | 56 | write %= size; |
okini3939 | 0:d3ab05ed8142 | 57 | } |
okini3939 | 0:d3ab05ed8142 | 58 | |
okini3939 | 0:d3ab05ed8142 | 59 | void flush() { |
okini3939 | 0:d3ab05ed8142 | 60 | read = 0; |
okini3939 | 0:d3ab05ed8142 | 61 | write = 0; |
okini3939 | 0:d3ab05ed8142 | 62 | } |
okini3939 | 0:d3ab05ed8142 | 63 | |
okini3939 | 0:d3ab05ed8142 | 64 | |
okini3939 | 0:d3ab05ed8142 | 65 | uint32_t available() { |
okini3939 | 0:d3ab05ed8142 | 66 | return (write >= read) ? write - read : size - read + write; |
okini3939 | 0:d3ab05ed8142 | 67 | }; |
okini3939 | 0:d3ab05ed8142 | 68 | |
okini3939 | 0:d3ab05ed8142 | 69 | bool dequeue(T * c) { |
okini3939 | 0:d3ab05ed8142 | 70 | bool empty = isEmpty(); |
okini3939 | 0:d3ab05ed8142 | 71 | if (!empty) { |
okini3939 | 0:d3ab05ed8142 | 72 | *c = buf[read++]; |
okini3939 | 0:d3ab05ed8142 | 73 | read %= size; |
okini3939 | 0:d3ab05ed8142 | 74 | } |
okini3939 | 0:d3ab05ed8142 | 75 | return(!empty); |
okini3939 | 0:d3ab05ed8142 | 76 | }; |
okini3939 | 0:d3ab05ed8142 | 77 | |
okini3939 | 0:d3ab05ed8142 | 78 | private: |
okini3939 | 0:d3ab05ed8142 | 79 | volatile uint32_t write; |
okini3939 | 0:d3ab05ed8142 | 80 | volatile uint32_t read; |
okini3939 | 0:d3ab05ed8142 | 81 | uint32_t size; |
okini3939 | 0:d3ab05ed8142 | 82 | T * buf; |
okini3939 | 0:d3ab05ed8142 | 83 | }; |
okini3939 | 0:d3ab05ed8142 | 84 | |
okini3939 | 0:d3ab05ed8142 | 85 | #endif |