1 // Copyright 2016 Emilie Gillet.
2 //
3 // Author: Emilie Gillet (emilie.o.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 2 switches.
28 
29 #ifndef PLAITS_DRIVERS_SWITCHES_H_
30 #define PLAITS_DRIVERS_SWITCHES_H_
31 
32 #include "stmlib/stmlib.h"
33 
34 #include <stm32f37x_conf.h>
35 
36 namespace plaits {
37 
38 enum Switch {
39   SWITCH_ROW_1,
40   SWITCH_ROW_2,
41   SWITCH_LAST
42 };
43 
44 class Switches {
45  public:
Switches()46   Switches() { }
~Switches()47   ~Switches() { }
48 
49   void Init();
50   void Debounce();
51 
released(Switch s)52   inline bool released(Switch s) const {
53     return switch_state_[s] == 0x7f;
54   }
55 
just_pressed(Switch s)56   inline bool just_pressed(Switch s) const {
57     return switch_state_[s] == 0x80;
58   }
59 
pressed(Switch s)60   inline bool pressed(Switch s) const {
61     return switch_state_[s] == 0x00;
62   }
63 
pressed_immediate(Switch s)64   inline bool pressed_immediate(Switch s) const {
65     if (s == SWITCH_ROW_1) {
66       return !GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_7);
67     } else if (s == SWITCH_ROW_2) {
68       return !GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_6);
69     } else {
70       return false;
71     }
72   }
73 
74  private:
75   uint8_t switch_state_[SWITCH_LAST];
76 
77   DISALLOW_COPY_AND_ASSIGN(Switches);
78 };
79 
80 }  // namespace plaits
81 
82 #endif  // PLAITS_DRIVERS_SWITCHES_H_
83