1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
The MIT License (MIT)
Copyright (c) 2020 Matthias P. Braendli
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
use stm32f1xx_hal::{
prelude::*,
adc,
rcc::{APB2, Clocks},
stm32::ADC1,
gpio::gpiob::*,
gpio::gpioc::*,
gpio::{Analog, Input, PullUp},
};
use embedded_hal::digital::v2::InputPin;
#[derive(PartialEq, Eq, Clone, Copy)]
pub enum ButtonPress {
A,
B,
C,
D,
E,
F,
G,
ENC,
}
pub struct UI {
btn0_hist : [u16; 3],
btn1_hist : [u16; 3],
btn0_ch : PB1<Analog>,
btn1_ch : PB0<Analog>,
btn2 : PB12<Input<PullUp>>,
btn3 : PB13<Input<PullUp>>,
btn_enc : PC15<Input<PullUp>>,
adc : adc::Adc<ADC1>,
}
impl UI {
pub fn new(pb0: PB0<Analog>, pb1: PB1<Analog>, adc1: ADC1, mut apb2: &mut APB2, clocks: &Clocks, pb12: PB12<Input<PullUp>>, pb13: PB13<Input<PullUp>>, pc15 : PC15<Input<PullUp>>) -> UI {
let adc1 = adc::Adc::adc1(adc1, &mut apb2, *clocks);
UI {
btn0_hist : [4095; 3],
btn1_hist : [4095; 3],
btn0_ch : pb1,
btn1_ch : pb0,
btn2 : pb12,
btn3 : pb13,
btn_enc : pc15,
adc : adc1,
}
}
pub fn read_buttons(&mut self) -> Option<ButtonPress> {
// Debounce BTN0
let btn0_value: u16 = self.adc.read(&mut self.btn0_ch).unwrap();
self.btn0_hist[2] = self.btn0_hist[1];
self.btn0_hist[1] = self.btn0_hist[0];
self.btn0_hist[0] = btn0_value;
let mut btn0 = [None; 3];
for (i, &v) in self.btn0_hist.iter().enumerate() {
btn0[i] =
if v > 3050 {
None
}
else if v > 1650 {
Some(ButtonPress::B)
}
else if v > 675 {
Some(ButtonPress::C)
}
else {
Some(ButtonPress::D)
};
}
if btn0.iter().all(|&v| v != None && v == btn0[0]) {
return btn0[0];
}
// Debounce BTN1
let btn1_value: u16 = self.adc.read(&mut self.btn1_ch).unwrap();
self.btn1_hist[2] = self.btn1_hist[1];
self.btn1_hist[1] = self.btn1_hist[0];
self.btn1_hist[0] = btn1_value;
let mut btn1 = [None; 3];
for (i, &v) in self.btn1_hist.iter().enumerate() {
btn1[i] =
if v > 3050 {
None
}
else if v > 675 {
Some(ButtonPress::F)
}
else {
Some(ButtonPress::A)
};
}
if btn1.iter().all(|&v| v != None && v == btn1[0]) {
return btn1[0];
}
if self.btn2.is_low().unwrap() {
return Some(ButtonPress::E)
}
if self.btn3.is_low().unwrap() {
return Some(ButtonPress::G)
}
if self.btn_enc.is_low().unwrap() {
return Some(ButtonPress::ENC)
}
None
}
}
|
