USBDevice for STM support
Dependents: Nucleo_Usb_JoyMouse Nucleo_usbmouse ELEC350_1-referral-2018-usb-hid USBJoystick_HelloWorld2_wip ... more
This library contains all mbed usb device library (mbed-os\features\unsupported\USBDevice).
USBSerial/CircBuffer.h@4:50ec00aa4515, 2017-03-28 (annotated)
- Committer:
- frq08711@LMECWL0871.LME.ST.COM
- Date:
- Tue Mar 28 11:00:57 2017 +0200
- Branch:
- master
- Revision:
- 4:50ec00aa4515
- Parent:
- 1:2a3ae13b45ef
update for 5.4.2
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 1 | /* Copyright (c) 2010-2011 mbed.org, MIT License |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 2 | * |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 4 | * and associated documentation files (the "Software"), to deal in the Software without |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 5 | * restriction, including without limitation the rights to use, copy, modify, merge, publish, |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 6 | * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 7 | * Software is furnished to do so, subject to the following conditions: |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 8 | * |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 10 | * substantial portions of the Software. |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 11 | * |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 17 | */ |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 18 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 19 | #ifndef CIRCBUFFER_H |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 20 | #define CIRCBUFFER_H |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 21 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 22 | template <class T, int Size> |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 23 | class CircBuffer { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 24 | public: |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 25 | CircBuffer():write(0), read(0){} |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 26 | bool isFull() { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 27 | return ((write + 1) % size == read); |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 28 | }; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 29 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 30 | bool isEmpty() { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 31 | return (read == write); |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 32 | }; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 33 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 34 | void queue(T k) { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 35 | if (isFull()) { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 36 | read++; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 37 | read %= size; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 38 | } |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 39 | buf[write++] = k; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 40 | write %= size; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 41 | } |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 42 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 43 | uint16_t available() { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 44 | return (write >= read) ? write - read : size - read + write; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 45 | }; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 46 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 47 | bool dequeue(T * c) { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 48 | bool empty = isEmpty(); |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 49 | if (!empty) { |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 50 | *c = buf[read++]; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 51 | read %= size; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 52 | } |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 53 | return(!empty); |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 54 | }; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 55 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 56 | private: |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 57 | volatile uint16_t write; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 58 | volatile uint16_t read; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 59 | static const int size = Size+1; //a modern optimizer should be able to remove this so it uses no ram. |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 60 | T buf[Size+1]; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 61 | }; |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 62 | |
frq08711@LMECWL0871.LME.ST.COM | 1:2a3ae13b45ef | 63 | #endif |