1 // Copyright 2013 Olivier Gillet.
2 //
3 // Author: Olivier Gillet (ol.gillet@gmail.com)
4 //
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
11 //
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
14 //
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21 // THE SOFTWARE.
22 //
23 // See http://creativecommons.org/licenses/MIT/ for more information.
24 //
25 // -----------------------------------------------------------------------------
26 //
27 // Driver for the ADD/DEL switches.
28 
29 #ifndef FRAMES_DRIVERS_SWITCHES_H_
30 #define FRAMES_DRIVERS_SWITCHES_H_
31 
32 #include <stm32f10x_conf.h>
33 #include "stmlib/stmlib.h"
34 
35 namespace frames {
36 
37 const uint8_t kNumSwitches = 2;
38 
39 class Switches {
40  public:
Switches()41   Switches() { }
~Switches()42   ~Switches() { }
43 
44   void Init();
45   void Debounce();
46 
released(uint8_t index)47   inline bool released(uint8_t index) const {
48     return switch_state_[index] == 0x7f;
49   }
50 
just_pressed(uint8_t index)51   inline bool just_pressed(uint8_t index) const {
52     return switch_state_[index] == 0x80;
53   }
54 
pressed(uint8_t index)55   inline bool pressed(uint8_t index) const {
56     return switch_state_[index] == 0x00;
57   }
58 
pressed_immediate(uint8_t index)59   inline bool pressed_immediate(uint8_t index) const {
60     return !GPIO_ReadInputDataBit(GPIOB, index ? GPIO_Pin_11 : GPIO_Pin_10);
61   }
62 
63  private:
64   uint8_t switch_state_[kNumSwitches];
65 
66   DISALLOW_COPY_AND_ASSIGN(Switches);
67 };
68 
69 }  // namespace frames
70 
71 #endif  // FRAMES_DRIVERS_SWITCHES_H_
72