利用F1C200S从零制作掌机之debian文件体系完善NES - IT评测·应用市场-qidao123.com技术社区

#/bin/bash
cd rootfs
sudo mount --bind /dev dev/
sudo mount --bind /sys sys/
sudo mount --bind /proc proc/
sudo mount --bind /dev/pts dev/pts/
sudo cp /usr/bin/qemu-arm-static usr/bin/
cd ..
sudo LC_ALL=C LANGUAGE=C LANG=C chroot rootfs

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cd /home/arm-NES-linux/linux && make

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sudo rm rootfs/usr/bin/qemu-arm-static #删除之前拷贝的文件
cd rootfs
sudo umount dev/pts/ # 一定要在/dev前面umount
sudo umount dev/
sudo umount sys/
sudo umount proc/

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int InitJoypadInput(void)
{
int iErr = 0;
//iErr = RegisterJoypadInput(&joypadInput);
iErr = RegisterJoypadInput(&usbJoypadInput); // 只注册这个输入
return iErr;
}

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static int USBjoypadGet(void)
{
/**
* FC手柄 bit 键位对应关系真实手柄中有一个定时器，处理连A 连B
* 0 1 2 3 4 5 6 7
* A B Select Start Up Down Left Right
*/
//因为 USB 手柄每次只能读到一位键值所以要有静态变量保存上一次的值
static unsigned char joypad = 0;
struct input_event e;
if(0 < read (USBjoypad_fd, &e, sizeof(e)))
{
if(0x3 == e.type)
{
/*
上：
value:0x8001 type:0x2 number:0x5
value:0x0 type:0x2 number:0x5
*/
if(17 == e.code && -1 == e.value)
{
joypad |= 1<<4;
}
/*下：
value:0x7fff type:0x2 number:0x5
value:0x0 type:0x2 number:0x5
*/
if(17 == e.code && 1 == e.value)
{
joypad |= 1<<5;
}
//松开
if(17 == e.code && 0 == e.value)
{
joypad &= ~(1<<4 | 1<<5);
}
/*左：
value:0x8001 type:0x2 number:0x4
value:0x0 type:0x2 number:0x4
*/
if(16 == e.code && -1 == e.value)
{
joypad |= 1<<6;
}
/*右：
value:0x7fff type:0x2 number:0x4
value:0x0 type:0x2 number:0x4
*/
if(16 == e.code && 1 == e.value)
{
joypad |= 1<<7;
}
//松开
if(16 == e.code && 0 == e.value)
{
joypad &= ~(1<<6 | 1<<7);
}
}
if(0x1 == e.type)
{
/*选择：
value:0x1 type:0x1 number:0xa
value:0x0 type:0x1 number:0xa
*/
if(314 == e.code && 1 == e.value)
{
joypad |= 1<<2;
}
if(314 == e.code && 0 == e.value)
{
joypad &= ~(1<<2);
}
/*开始
value:0x1 type:0x1 number:0xb
value:0x0 type:0x1 number:0xb
*/
if(315 == e.code && 1 == e.value)
{
joypad |= 1<<3;
}
if(315 == e.code && 0 == e.value)
{
joypad &= ~(1<<3);
}
/*A
value:0x1 type:0x1 number:0x0
value:0x0 type:0x1 number:0x0
*/
if(304 == e.code && 1 == e.value)
{
joypad |= 1<<0;
}
if(304 == e.code && 0 == e.value)
{
joypad &= ~(1<<0);
}
/*B
value:0x1 type:0x1 number:0x1
value:0x0 type:0x1 number:0x1
*/
if(305 == e.code && 1 == e.value)
{
joypad |= 1<<1;
}
if(305 == e.code && 0 == e.value)
{
joypad &= ~(1<<1);
}
/*X
value:0x1 type:0x1 number:0x3
value:0x0 type:0x1 number:0x3
*/
if(307 == e.code && 1 == e.value)
{
joypad |= 1<<0;
}
if(307 == e.code && 0 == e.value)
{
joypad &= ~(1<<0);
}
/*Y
value:0x1 type:0x1 number:0x4
value:0x0 type:0x1 number:0x4
*/
if(308 == e.code && 1 == e.value)
{
joypad |= 1<<1;
}
if(308 == e.code && 0 == e.value)
{
joypad &= ~(1<<1);
}
}
return joypad;
}
return -1;
}

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static void *InputEventTreadFunction(void *pVoid)
{
/* 定义函数指针 */
int (*GetJoypad)(void);
GetJoypad = (int (*)(void))pVoid;
while (1)
{
//因为有阻塞所以没有输入时是休眠
//g_InputEvent = GetJoypad();
int data = GetJoypad();
if (data == -1)
{
continue;
}
else
{
g_InputEvent = data;
}
//有数据时唤醒
pthread_mutex_lock(&g_tMutex);
//因为有阻塞所以没有输入时是休眠
pthread_cond_signal(&g_tConVar);
pthread_mutex_unlock(&g_tMutex);
}
}

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cat /proc/asound/cards

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defaults.ctl.card 0
defaults.pcm.card 0
defaults.timer.card 0

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amixer controls 用于查看音频系统提供的操作接口
amixer contents 用于查看接口配置参数
amixer cget + 接口函数
amixer cset + 接口函数 + 设置值
amixer cget numid=14,iface=MIXER,name='ADC Mixer Mic Capture Switch'
amixer cset numid=14,iface=MIXER,name='ADC Mixer Mic Capture Switch' on
打开之后才可以录音
arecord out.wav

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root@wang-virtual-machine:~# arecord out.wav
Recording WAVE 'out.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
^CAborted by signal Interrupt...
root@wang-virtual-machine:~#
root@wang-virtual-machine:~#
root@wang-virtual-machine:~# aplay out.wav
Playing WAVE 'out.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
^CAborted by signal Interrupt...

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root@wang-virtual-machine:/home# mplayer -ao alsa test.mp3
MPlayer 1.4 (Debian), built with gcc-10 (C) 2000-2019 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing test.mp3.
libavformat version 58.45.100 (external)
Audio only file format detected.
Load subtitles in ./
==========================================================================
Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
AUDIO: 16000 Hz, 2 ch, s16le, 16.0 kbit/3.12% (ratio: 2000->64000)
Selected audio codec: [mpg123] afm: mpg123 (MPEG 1.0/2.0/2.5 layers I, II, III)
==========================================================================
AO: [alsa] 16000Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 3.1 (03.0) of 3.0 (03.0) 12.7%
Exiting... (End of file)

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vi /etc/mplayer/mplayer.conf
lirc=no

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