先说说我的环境
荔枝派nano，bebian文件系统
加载esp8266-12F的模块后听歌会卡顿，apt-get update也特别特别慢
修改esp模块源码，将频率调低点。
我试过调到#define SPI_FREQ (20000000) 听歌还是卡顿
define SPI_FREQ (10000000)就不卡顿了，apt-get update我感觉会快一点，但好像也快不到哪里去
离线
这是老坑，号称天坑，可以先翻翻论坛里的帖子
离线
破案了，这是解决前的CPU占用率
127 2 root RW 0 0% 49% [kspiirqd/eagle]
71 2 root SW 0 0% 10% [spi1]
47 2 root RW 0 0% 9% [kworker/0:1-pm]
128 121 root R 1492 7% 1% top
70 2 root SW 0 0% 0% [spi0]
121 1 root S 1500 7% 0% -sh
1 0 root S 1492 7% 0% init
100 1 root S 1484 7% 0% /sbin/syslogd -n
103 1 root S 1480 7% 0% /sbin/klogd -n
73 2 root IW 0 0% 0% [kworker/0:2-pm]
75 2 root IW< 0 0% 0% [kworker/0:1H-kb]
8 2 root SW 0 0% 0% [kdevtmpfs]
5 2 root IW 0 0% 0% [kworker/u2:0-es]
7 2 root SW 0 0% 0% [ksoftirqd/0]
14 2 root IW 0 0% 0% [kworker/u2:1-es]
2 0 root SW 0 0% 0% [kthreadd]
4 2 root IW< 0 0% 0% [kworker/0:0H-kb]
64 2 root IW< 0 0% 0% [xprtiod]
3 2 root IW 0 0% 0% [kworker/0:0-pm]
62 2 root IW< 0 0% 0% [rpciod]总的占用率高达60%-70%，播放音乐非常卡顿。apt-update速度真是慢的离谱
观察到占用最大的是 127 2 root RW 0 0% 49% [kspiirqd/eagle]
百度了一下是中断问题，突然想起esp8266-f12有中断引脚我没用上ps:起因是刚开始调试的时候看到有
网友说最少三条线就可以工作，所以为了调通它，所以没接。
刚接好esp8266-f12的中断引脚后
Mem: 14904K used, 7792K free, 48K shrd, 596K buff, 6352K cached
CPU: 8% usr 8% sys 0% nic 83% idle 0% io 0% irq 0% sirq
Load average: 0.80 0.30 0.11 1/37 131
PID PPID USER STAT VSZ %VSZ %CPU COMMAND
131 121 root R 1488 7% 8% top
76 2 root IW 0 0% 8% [kworker/0:3-pm]
121 1 root S 1500 7% 0% -sh
1 0 root S 1492 7% 0% init
100 1 root S 1484 7% 0% /sbin/syslogd -n
103 1 root S 1480 7% 0% /sbin/klogd -n
73 2 root IW 0 0% 0% [kworker/0:2-pm]
70 2 root SW 0 0% 0% [spi0]
75 2 root IW< 0 0% 0% [kworker/0:1H-mm]
8 2 root SW 0 0% 0% [kdevtmpfs]
71 2 root SW 0 0% 0% [spi1]
47 2 root IW 0 0% 0% [kworker/0:1-pm]
7 2 root SW 0 0% 0% [ksoftirqd/0]
14 2 root IW 0 0% 0% [kworker/u2:1-es]
5 2 root IW 0 0% 0% [kworker/u2:0-ev]
82 2 root SW 0 0% 0% [jbd2/mmcblk0p2-]
2 0 root SW 0 0% 0% [kthreadd]
66 2 root SW 0 0% 0% [kswapd0]
127 2 root SW 0 0% 0% [kspiirqd/eagle]
4 2 root IW< 0 0% 0% [kworker/0:0H-kb] 127 2 root SW 0 0% 0% [kspiirqd/eagle]
直接干到零。总CPU在8%
播放音乐时间恢复正常ps:耳机没带，听不了..
破案了，就是没有中断导致的
离线
这是老坑，号称天坑，可以先翻翻论坛里的帖子
论坛找不到，不过我在百度找到一些线索。现在解决了
离线
🐂🐂
愿学屠龙技，很多whycan的朋友需要这个分享
离线
🐂🐂
愿学屠龙技，很多whycan的朋友需要这个分享
播放音乐没声音，在buildroot里配置alsa-utils了，但是在nano运行的时候找不到alsamixer，明明已经勾选了
离线
解决了找不到alsamixer的问题，原因是需要make clean。重新编译buildroot。
离线
还有一个是关于nona联网，执行mpg123听歌后nano崩溃重启的问题。
这是因为nano需要配置交换空间 参考 https://www.cnblogs.com/twzy/p/15160824.html
3. 增加swap分区
在使用一些软件的过程中，会遇到系统崩溃，尤其是使用 apt-get install 的时候，所以需要加入swap分区，可以简单理解为虚拟内存。
使用
free
查看当前swap大小，
使用如下命令创建你想要添加swap分区的大小
dd if=/dev/zero of=/swap1 bs=1M count=512 #改成你要设置的SWAP大小，512就是512MB
设置swap分区文件
mkswap /swap1
激活swap分区
swapon /swap1
此时使用free命令就能看到创建好的swap分区，但这只是临时性的， 重启会失效，需要配置一下，下次开机时候要开swap
vi /etc/fstab
操作，在最后一行添加
/swap1 swap swap defaults 0 0
离线
再探💪
离线
再探💪
再写一些新手教程就差不多完成我的目标了
网盘，音乐播放器
离线
首先关于nano开机跳过登陆直接进入命令行，这是自运行服务器的前提了。这里不需要重新编译buildroot，在nano里修改就行了
1 vi /etc/inittab
2在 ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 # GENERIC_SERIAL前面加#注释掉
#ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 # GENERIC_SERIAL
添加，这段意思是循环执行
ttyS0::respawn:~/bin/sh
如果你有什么自启动的程序可以写个.sh脚本，我这里有个start.sh里面是加载esp8266并且连上wifi，修改时间的脚本。
如果没有，可以不写以下代码 once的意思是执行一次
ttyS0::once:/opt/start.sh
注意原先开头是ttyS0，就填。根据自己的系统修改
保存重启，搞定!
离线
关于nano音频的除了按照 https://www.cnblogs.com/twzy/p/15356109.html 食用外。需要注意以下几点：
一： 如果你编译的时候就是冲着播放器来的，第一次的时候就要勾选asla相关配置,注意：以下操作是你配置好
buildroot的时候再配置
1 Toolchain ---> Enable WCHAR support
2 Target packages ---> Audio and video applications ---> alsa-utils --->全部勾选
2.5 Target packages ---> Audio and video applications ---> mpg123 安装播放器 ，根据自己喜好
3 Target packages --->Audio/Sound ---> alsa-lib --->全部勾选
全部完成再等待漫长的make就行了
二：buildroot文件系统tar到SD卡后
1编辑SD卡里的文件系统
vi /etc/asound.state 加入以下代码
state.Loopback {
control.1 {
iface PCM
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.2 {
iface PCM
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.3 {
iface PCM
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.4 {
iface PCM
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.5 {
iface PCM
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.6 {
iface PCM
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.7 {
iface PCM
subdevice 1
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.8 {
iface PCM
subdevice 1
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.9 {
iface PCM
subdevice 1
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.10 {
iface PCM
subdevice 1
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.11 {
iface PCM
subdevice 1
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.12 {
iface PCM
subdevice 1
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.13 {
iface PCM
subdevice 2
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.14 {
iface PCM
subdevice 2
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.15 {
iface PCM
subdevice 2
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.16 {
iface PCM
subdevice 2
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.17 {
iface PCM
subdevice 2
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.18 {
iface PCM
subdevice 2
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.19 {
iface PCM
subdevice 3
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.20 {
iface PCM
subdevice 3
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.21 {
iface PCM
subdevice 3
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.22 {
iface PCM
subdevice 3
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.23 {
iface PCM
subdevice 3
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.24 {
iface PCM
subdevice 3
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.25 {
iface PCM
subdevice 4
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.26 {
iface PCM
subdevice 4
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.27 {
iface PCM
subdevice 4
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.28 {
iface PCM
subdevice 4
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.29 {
iface PCM
subdevice 4
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.30 {
iface PCM
subdevice 4
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.31 {
iface PCM
subdevice 5
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.32 {
iface PCM
subdevice 5
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.33 {
iface PCM
subdevice 5
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.34 {
iface PCM
subdevice 5
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.35 {
iface PCM
subdevice 5
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.36 {
iface PCM
subdevice 5
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.37 {
iface PCM
subdevice 6
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.38 {
iface PCM
subdevice 6
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.39 {
iface PCM
subdevice 6
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.40 {
iface PCM
subdevice 6
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.41 {
iface PCM
subdevice 6
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.42 {
iface PCM
subdevice 6
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.43 {
iface PCM
subdevice 7
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.44 {
iface PCM
subdevice 7
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.45 {
iface PCM
subdevice 7
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.46 {
iface PCM
subdevice 7
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.47 {
iface PCM
subdevice 7
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.48 {
iface PCM
subdevice 7
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.49 {
iface PCM
device 1
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.50 {
iface PCM
device 1
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.51 {
iface PCM
device 1
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.52 {
iface PCM
device 1
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.53 {
iface PCM
device 1
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.54 {
iface PCM
device 1
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.55 {
iface PCM
device 1
subdevice 1
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.56 {
iface PCM
device 1
subdevice 1
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.57 {
iface PCM
device 1
subdevice 1
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.58 {
iface PCM
device 1
subdevice 1
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.59 {
iface PCM
device 1
subdevice 1
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.60 {
iface PCM
device 1
subdevice 1
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.61 {
iface PCM
device 1
subdevice 2
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.62 {
iface PCM
device 1
subdevice 2
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.63 {
iface PCM
device 1
subdevice 2
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.64 {
iface PCM
device 1
subdevice 2
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.65 {
iface PCM
device 1
subdevice 2
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.66 {
iface PCM
device 1
subdevice 2
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.67 {
iface PCM
device 1
subdevice 3
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.68 {
iface PCM
device 1
subdevice 3
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.69 {
iface PCM
device 1
subdevice 3
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.70 {
iface PCM
device 1
subdevice 3
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.71 {
iface PCM
device 1
subdevice 3
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.72 {
iface PCM
device 1
subdevice 3
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.73 {
iface PCM
device 1
subdevice 4
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.74 {
iface PCM
device 1
subdevice 4
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.75 {
iface PCM
device 1
subdevice 4
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.76 {
iface PCM
device 1
subdevice 4
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.77 {
iface PCM
device 1
subdevice 4
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.78 {
iface PCM
device 1
subdevice 4
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.79 {
iface PCM
device 1
subdevice 5
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.80 {
iface PCM
device 1
subdevice 5
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.81 {
iface PCM
device 1
subdevice 5
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.82 {
iface PCM
device 1
subdevice 5
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.83 {
iface PCM
device 1
subdevice 5
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.84 {
iface PCM
device 1
subdevice 5
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.85 {
iface PCM
device 1
subdevice 6
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.86 {
iface PCM
device 1
subdevice 6
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.87 {
iface PCM
device 1
subdevice 6
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.88 {
iface PCM
device 1
subdevice 6
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.89 {
iface PCM
device 1
subdevice 6
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.90 {
iface PCM
device 1
subdevice 6
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
control.91 {
iface PCM
device 1
subdevice 7
name 'PCM Rate Shift 100000'
value 100000
comment {
access 'read write'
type INTEGER
count 1
range '80000 - 120000 (step 1)'
}
}
control.92 {
iface PCM
device 1
subdevice 7
name 'PCM Notify'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.93 {
iface PCM
device 1
subdevice 7
name 'PCM Slave Active'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.94 {
iface PCM
device 1
subdevice 7
name 'PCM Slave Format'
value 2
comment {
access read
type INTEGER
count 1
range '0 - 52 (step 1)'
}
}
control.95 {
iface PCM
device 1
subdevice 7
name 'PCM Slave Rate'
value 48000
comment {
access read
type INTEGER
count 1
range '0 - 192000 (step 1)'
}
}
control.96 {
iface PCM
device 1
subdevice 7
name 'PCM Slave Channels'
value 2
comment {
access read
type INTEGER
count 1
range '1 - 1024 (step 1)'
}
}
}
state.Codec {
control.1 {
iface MIXER
name 'DAC Playback Volume'
value 55
comment {
access 'read write'
type INTEGER
count 1
range '0 - 63'
dbmin -7308
dbmax 0
dbvalue.0 -928
}
}
control.2 {
iface MIXER
name 'Headphone Playback Volume'
value 54
comment {
access 'read write'
type INTEGER
count 1
range '0 - 63'
dbmin -9999999
dbmax 0
dbvalue.0 -900
}
}
control.3 {
iface MIXER
name 'Headphone Playback Switch'
value.0 true
value.1 true
comment {
access 'read write'
type BOOLEAN
count 2
}
}
control.4 {
iface MIXER
name 'Line In Playback Volume'
value 0
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 -450
}
}
control.5 {
iface MIXER
name 'FM In Playback Volume'
value 0
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 -450
}
}
control.6 {
iface MIXER
name 'Mic In Playback Volume'
value 7
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 600
}
}
control.7 {
iface MIXER
name 'Mic Boost Volume'
value 7
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin 0
dbmax 4200
dbvalue.0 4200
}
}
control.8 {
iface MIXER
name 'ADC Capture Volume'
value 3
comment {
access 'read write'
type INTEGER
count 1
range '0 - 7'
dbmin -450
dbmax 600
dbvalue.0 0
}
}
control.9 {
iface MIXER
name 'ADC Mixer Right Out Capture Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.10 {
iface MIXER
name 'ADC Mixer Left Out Capture Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.11 {
iface MIXER
name 'ADC Mixer Line In Capture Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.12 {
iface MIXER
name 'ADC Mixer Right FM In Capture Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.13 {
iface MIXER
name 'ADC Mixer Left FM In Capture Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.14 {
iface MIXER
name 'ADC Mixer Mic Capture Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.15 {
iface MIXER
name 'Left Mixer Right DAC Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.16 {
iface MIXER
name 'Left Mixer Left DAC Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.17 {
iface MIXER
name 'Left Mixer FM In Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.18 {
iface MIXER
name 'Left Mixer Line In Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.19 {
iface MIXER
name 'Left Mixer Mic In Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.20 {
iface MIXER
name 'Right Mixer Left DAC Playback Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.21 {
iface MIXER
name 'Right Mixer Right DAC Playback Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.22 {
iface MIXER
name 'Right Mixer FM In Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.23 {
iface MIXER
name 'Right Mixer Line In Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.24 {
iface MIXER
name 'Right Mixer Mic In Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.25 {
iface MIXER
name 'Headphone Source Playback Route'
value.0 Mixer
value.1 Mixer
comment {
access 'read write'
type ENUMERATED
count 2
item.0 DAC
item.1 Mixer
}
}
}保存退出，输入
alsamixer 将第二条HeadPhone Source从Mixer改为ADC 原因是ADC是双通道的，左右耳机
除了第一个HeadPone和最后一个ADC，只要没有麦克风都可以关掉
如果发现没有HeadPhone怎么办？
vi /etc/asound.conf
defaults.ctl.card 1
defaults.pcm.card 1
defaults.timer.card 1保存退出再尝试以下，有声音后。输入
alsactl store
保存配置，需要恢复的时候
alsactl restore
每次开机播放音乐都没有声音怎么办？
尝试打开alsamixer，再退出。播放音乐，还是没声音
alsactl restore
alsamixer
应该就有了
离线
能发布个完整的固件上来吗❓
离线
能发布个完整的固件上来吗❓
我是SD卡的，没有固件...
离线
那就制作一个img出来🤭
离线
如果是参考 小白自制Linux开发板 七. USB驱动配置：https://www.cnblogs.com/twzy/p/15243838.html
在插入移动硬盘的时候也许会出现
[ 56.707180] usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
[ 56.723018] usb usb1-port1: unable to enumerate USB device 插入USB扩展坞，再将移动硬盘插入USB扩展坞。这时候就能成功识别移动硬盘了
其实不排除是内核配置问题。有兴趣的小伙伴可以修改一下
离线
那就制作一个img出来🤭
我小白，不太会弄...我传dtb和zImage文件吧....
我用的是ili9341屏幕，串口输出测试就好了
离线
linux-5.7.1-kernel.tar.xz
我传dtb和zImage文件
我用的是ili9341屏幕，串口输出测试就好了
离线