tiny200播放音频失败

秦皇岛岛主 · 2020-09-16 20:57:37

amixer做的相关配置

# amixer contents
numid=25,iface=MIXER,name='Headphone Source Playback Route'
  ; type=ENUMERATED,access=rw------,values=2,items=2
  ; Item #0 'DAC'
  ; Item #1 'Mixer'
  : values=0,0
numid=3,iface=MIXER,name='Headphone Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=2,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=63,step=0
  : values=0
  | dBscale-min=-63.00dB,step=1.00dB,mute=1
numid=5,iface=MIXER,name='FM In Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=4,iface=MIXER,name='Line In Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=7,iface=MIXER,name='Mic Boost Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=4
  | dBrange-
    rangemin=0,,rangemax=0
      | dBscale-min=0.00dB,step=0.00dB,mute=0
    rangemin=1,,rangemax=7
      | dBscale-min=24.00dB,step=3.00dB,mute=0

numid=6,iface=MIXER,name='Mic In Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=3
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=13,iface=MIXER,name='ADC Mixer Left FM In Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=10,iface=MIXER,name='ADC Mixer Left Out Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=11,iface=MIXER,name='ADC Mixer Line In Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=14,iface=MIXER,name='ADC Mixer Mic Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=12,iface=MIXER,name='ADC Mixer Right FM In Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=9,iface=MIXER,name='ADC Mixer Right Out Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=8,iface=MIXER,name='ADC Capture Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=3
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=1,iface=MIXER,name='DAC Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=63,step=0
  : values=62
  | dBscale-min=-73.08dB,step=1.16dB,mute=0
numid=17,iface=MIXER,name='Left Mixer FM In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=16,iface=MIXER,name='Left Mixer Left DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=18,iface=MIXER,name='Left Mixer Line In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=19,iface=MIXER,name='Left Mixer Mic In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=15,iface=MIXER,name='Left Mixer Right DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=22,iface=MIXER,name='Right Mixer FM In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=20,iface=MIXER,name='Right Mixer Left DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=23,iface=MIXER,name='Right Mixer Line In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=24,iface=MIXER,name='Right Mixer Mic In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=21,iface=MIXER,name='Right Mixer Right DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on

使用播放命名播放音乐

# aplay on_phone.wav
Playing WAVE 'on_phone.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono
#

我在OUT+和OUT-两端接了一个4W喇叭
这是一首5秒的音乐，播放时间是正常的，但是没有声音

最近编辑记录秦皇岛岛主 (2020-09-16 20:57:58)

秦皇岛岛主 · 2020-09-16 21:27:02

改成这样，可以播放了

# amixer contents
numid=25,iface=MIXER,name='Headphone Source Playback Route'
  ; type=ENUMERATED,access=rw------,values=2,items=2
  ; Item #0 'DAC'
  ; Item #1 'Mixer'
  : values=0,0
numid=3,iface=MIXER,name='Headphone Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=2,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=63,step=0
  : values=63
  | dBscale-min=-63.00dB,step=1.00dB,mute=1
numid=5,iface=MIXER,name='FM In Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=4,iface=MIXER,name='Line In Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=7,iface=MIXER,name='Mic Boost Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=4
  | dBrange-
    rangemin=0,,rangemax=0
      | dBscale-min=0.00dB,step=0.00dB,mute=0
    rangemin=1,,rangemax=7
      | dBscale-min=24.00dB,step=3.00dB,mute=0

numid=6,iface=MIXER,name='Mic In Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=3
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=13,iface=MIXER,name='ADC Mixer Left FM In Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=10,iface=MIXER,name='ADC Mixer Left Out Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=11,iface=MIXER,name='ADC Mixer Line In Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=14,iface=MIXER,name='ADC Mixer Mic Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=12,iface=MIXER,name='ADC Mixer Right FM In Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=9,iface=MIXER,name='ADC Mixer Right Out Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=8,iface=MIXER,name='ADC Capture Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=3
  | dBscale-min=-4.50dB,step=1.50dB,mute=0
numid=1,iface=MIXER,name='DAC Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=63,step=0
  : values=63
  | dBscale-min=-73.08dB,step=1.16dB,mute=0
numid=17,iface=MIXER,name='Left Mixer FM In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=16,iface=MIXER,name='Left Mixer Left DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=18,iface=MIXER,name='Left Mixer Line In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=19,iface=MIXER,name='Left Mixer Mic In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=15,iface=MIXER,name='Left Mixer Right DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=22,iface=MIXER,name='Right Mixer FM In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=20,iface=MIXER,name='Right Mixer Left DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=23,iface=MIXER,name='Right Mixer Line In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=24,iface=MIXER,name='Right Mixer Mic In Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=21,iface=MIXER,name='Right Mixer Right DAC Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off

秦皇岛岛主 · 2020-09-16 22:32:04

如何使用tiny200 录音和放音（内容虽然简单，献给向我一样的小白）
0. 在OUT+和OUT-两端接一个小喇叭
1. 在buildroot中打开tinyalsa（aodzip大佬推荐tinyalsa，tinyalsa用起来确实比较简单）
2. 使用tinyalsa的tinymix配置输入输出通道和音量,效果如下

# tinymix contents
Number of controls: 25
ctl     type    num     name                                    value
0       INT     1       DAC Playback Volume                     63 (range 0->63)
1       INT     1       Headphone Playback Volume               63 (range 0->63)
2       BOOL    2       Headphone Playback Switch               On, On
3       INT     1       Line In Playback Volume                 0 (range 0->7)
4       INT     1       FM In Playback Volume                   0 (range 0->7)
5       INT     1       Mic In Playback Volume                  3 (range 0->7)
6       INT     1       Mic Boost Volume                        4 (range 0->7)
7       INT     1       ADC Capture Volume                      3 (range 0->7)
8       BOOL    1       ADC Mixer Right Out Capture Switch      Off
9       BOOL    1       ADC Mixer Left Out Capture Switch       Off
10      BOOL    1       ADC Mixer Line In Capture Switch        Off
11      BOOL    1       ADC Mixer Right FM In Capture Switch    Off
12      BOOL    1       ADC Mixer Left FM In Capture Switch     Off
13      BOOL    1       ADC Mixer Mic Capture Switch            On
14      BOOL    1       Left Mixer Right DAC Playback Switch    Off
15      BOOL    1       Left Mixer Left DAC Playback Switch     Off
16      BOOL    1       Left Mixer FM In Playback Switch        Off
17      BOOL    1       Left Mixer Line In Playback Switch      Off
18      BOOL    1       Left Mixer Mic In Playback Switch       Off
19      BOOL    1       Right Mixer Left DAC Playback Switch    Off
20      BOOL    1       Right Mixer Right DAC Playback Switch   Off
21      BOOL    1       Right Mixer FM In Playback Switch       Off
22      BOOL    1       Right Mixer Line In Playback Switch     Off
23      BOOL    1       Right Mixer Mic In Playback Switch      Off
24      ENUM    2       Headphone Source Playback Route         , DACMixer, , DACMixer

3. 测试播放成功

# tinyplay on_phone.wav
playing 'on_phone.wav': 2 ch, 48000 hz, 16 bit
#

测试录音成功

#tinycap 1.wav -d 0 -c 1 -r 44100 -b 16

WhyCan Forum(哇酷开发者社区)

楼主 #1 2020-09-16 20:57:37 分享评论

tiny200播放音频失败

楼主 #2 2020-09-16 21:27:02 分享评论

Re: tiny200播放音频失败

楼主 #3 2020-09-16 22:32:04 分享评论

Re: tiny200播放音频失败

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