1 // Copyright 2014 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 front panel switches.
28 
29 #ifndef CLOUDS_DRIVERS_SWITCHES_H_
30 #define CLOUDS_DRIVERS_SWITCHES_H_
31 
32 #include "stmlib/stmlib.h"
33 
34 #include <stm32f4xx_conf.h>
35 
36 namespace clouds {
37 
38 const uint8_t kNumSwitches = 3;
39 
40 class Switches {
41  public:
Switches()42   Switches() { }
~Switches()43   ~Switches() { }
44 
45   void Init();
46   void Debounce();
47 
released(uint8_t index)48   inline bool released(uint8_t index) const {
49     return switch_state_[index] == 0x7f;
50   }
51 
just_pressed(uint8_t index)52   inline bool just_pressed(uint8_t index) const {
53     return switch_state_[index] == 0x80;
54   }
55 
pressed(uint8_t index)56   inline bool pressed(uint8_t index) const {
57     return switch_state_[index] == 0x00;
58   }
59 
pressed_immediate(uint8_t index)60   inline bool pressed_immediate(uint8_t index) const {
61     if (index == kNumSwitches - 1) {
62       return !GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_8);
63     } else {
64       const uint16_t pins[] = { GPIO_Pin_11, GPIO_Pin_10 };
65       return !GPIO_ReadInputDataBit(GPIOC, pins[index]);
66     }
67   }
68 
69  private:
70   uint8_t switch_state_[kNumSwitches];
71 
72   DISALLOW_COPY_AND_ASSIGN(Switches);
73 };
74 
75 }  // namespace clouds
76 
77 #endif  // CLOUDS_DRIVERS_SWITCHES_H_
78