1 // Copyright 2015 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 ADC. ADC1 is used for the 8 pots ; ADC2 for the 8 CV inputs.
28 
29 #ifndef MARBLES_DRIVERS_ADC_H_
30 #define MARBLES_DRIVERS_ADC_H_
31 
32 #include "stmlib/stmlib.h"
33 
34 namespace marbles {
35 
36 enum AdcParameter {
37   ADC_CHANNEL_DEJA_VU_AMOUNT,
38   ADC_CHANNEL_DEJA_VU_LENGTH,
39   ADC_CHANNEL_X_SPREAD_2 = ADC_CHANNEL_DEJA_VU_LENGTH,
40   ADC_CHANNEL_T_RATE,
41   ADC_CHANNEL_T_BIAS,
42   ADC_CHANNEL_T_JITTER,
43   ADC_CHANNEL_X_SPREAD,
44   ADC_CHANNEL_X_BIAS,
45   ADC_CHANNEL_X_STEPS,
46   ADC_CHANNEL_LAST
47 };
48 
49 enum AdcGroup {
50   ADC_GROUP_POT = 0,
51   ADC_GROUP_CV = ADC_CHANNEL_LAST
52 };
53 
54 class Adc {
55  public:
Adc()56   Adc() { }
~Adc()57   ~Adc() { }
58 
59   void Init(bool single_channel);
60   void DeInit();
61   void Convert();
62 
float_value(int channel)63   inline float float_value(int channel) const {
64     return static_cast<float>(values_[channel]) / 65536.0f;
65   }
value(int channel)66   inline uint16_t value(int channel) const {
67     return values_[channel];
68   }
values()69   inline const uint16_t* values() const {
70     return &values_[0];
71   }
72 
73  private:
74   uint16_t values_[ADC_CHANNEL_LAST * 2];
75 
76   DISALLOW_COPY_AND_ASSIGN(Adc);
77 };
78 
79 }  // namespace marbles
80 
81 #endif  // MARBLES_DRIVERS_ADC_H_
82