blob: 3282f0a64eca0d080d97e527858696525a0e1f8d (
plain)
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
|
// Copyright 2022 Benjamin Barenblat
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
package main
import "time"
import (
"math"
"benjamin.barenblat.name/audiotrond/cfa635"
)
type view struct {
LCD *cfa635.LCDState
DisplayBrightness float64
Mtime time.Time
}
func updateView(lcd *cfa635.Module, old, new *view) error {
if err := cfa635.Update(lcd, old.LCD, new.LCD); err != nil {
return err
}
if new.DisplayBrightness != old.DisplayBrightness {
bright := new.DisplayBrightness
if bright < 0 {
bright = 0
}
if err := lcd.SetBacklight(int(math.Round(new.DisplayBrightness)), 0); err != nil {
return err
}
}
return nil
}
|
