📄 usbkeyboard.c
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/***********************设置空闲***********************************************/
void set_idle(void)
{
Prints(" 设置空闲.\r\n");
while(select_endpoint(1)&0x01);
write_endpoint_buff(1,0,0);
idle=Control_Data.DeviceRequest.wValue;
usb_flags.flags.usb_endp0_in=0;
usb_flags.flags.setup_packet_out=0;
}
/******************************************************************************/
/**********************设置协议**************************************************/
void set_protocol(void)
{
Prints(" 设置协议.\r\n");
while(select_endpoint(1)&0x01);
write_endpoint_buff(1,0,0);
protocol=Control_Data.DeviceRequest.wValue;
usb_flags.flags.usb_endp0_in=0;
usb_flags.flags.setup_packet_out=0;
}
/******************************************************************************/
/****************************终端点0输入处理**************************************/
void endp0_in(void)
{
read_last_status(1);
//如果是输入请求包
if(usb_flags.flags.setup_packet_in||usb_flags.flags.not_end)
{
switch(Control_Data.DeviceRequest.bmRequestType&0x60)
{
case 0x00: //标准请求
Prints("USB标准请求.\r\n");
switch(Control_Data.DeviceRequest.bmRequestType&0x1F)
{
case 0: //到设备
switch (Control_Data.DeviceRequest.bRequest)
{
case 0: get_status(0);break;
case 6: get_descriptor();break;
case 8: get_configuration();break;
default:break;
}
break;
case 1: //到接口
switch (Control_Data.DeviceRequest.bRequest)
{
case 0: get_status(1);break;
case 6: get_descriptor_interface();break;
case 10: get_interface();break;
default: break;
}
break;
case 2: //到端点
{
if(Control_Data.DeviceRequest.bRequest==0)get_status(2);
}
default: break;
}
break;
case 0x20: //类请求
Prints("USB类请求.\r\n");
switch(Control_Data.DeviceRequest.bmRequestType&0x1F)
{
case 0: //到设备
switch (Control_Data.DeviceRequest.bRequest)
{
default:break;
}
break;
case 1: //到接口
switch (Control_Data.DeviceRequest.bRequest)
{
case GET_REPORT: get_report(); break; //获取报告
case GET_IDLE: get_idle(); break; //获取空闲状态
case GET_PROTOCOL: get_protocol(); break; //获取协议
default: break;
}
break;
case 2: //到端点
{
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
}
default: break;
}
break;
case 0x40: //用户请求
Prints("USB用户请求.\r\n");
switch(Control_Data.DeviceRequest.bmRequestType&0x1F)
{
case 0: //到设备
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
case 1: //到接口
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
case 2: //到端点
{
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
}
default: break;
}
}
return;
}
//如果是输出请求包
if(usb_flags.flags.setup_packet_out)
{
switch(Control_Data.DeviceRequest.bmRequestType&0x60)
{
case 0x00: //标准请求
Prints("USB标准请求.\r\n");
switch(Control_Data.DeviceRequest.bmRequestType&0x1F)
{
case 0: //到设备
switch (Control_Data.DeviceRequest.bRequest)
{
case CLEAR_FEATURE: clear_feature(0);break;
case SET_FEATURE: set_feature(0);break;
case SET_ADDRESS: set_usb_address();break; //set_address
case SET_DESCRIPTOR: set_descriptor();break; //set_descriptor
case SET_CONFIGURATION: set_configuration(); break; //set_configurat
default: break;
}
break;
case 1: //到接口
switch (Control_Data.DeviceRequest.bRequest)
{
case CLEAR_FEATURE: clear_feature(1);break;
case SET_FEATURE: set_feature(1); break;
case SET_INTERFACE: set_interface();break;
default: break;
}
break;
case 2: //到端点
switch (Control_Data.DeviceRequest.bRequest)
{
case CLEAR_FEATURE: clear_feature(2);break;
case SET_FEATURE: set_feature(2);break;
default: break;
}
break;
default: break;
}
break;
case 0x20: //类请求
Prints("USB类请求.\r\n");
switch(Control_Data.DeviceRequest.bmRequestType&0x1F)
{
case 0: //接收者为设备
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
case 1: //接收者为接口
switch (Control_Data.DeviceRequest.bRequest)
{
case SET_REPORT: set_report(); break; //设置报告
case SET_IDLE: set_idle(); break; //设置空闲
case SET_PROTOCOL: set_protocol(); break; //设置协议
default: break;
}
break;
case 2: //接收者为端点
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
case 3: //其它接收者
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}break;
default: break;
}
break;
case 0x40: //用户请求
Prints("USB用户请求.\r\n");
switch(Control_Data.DeviceRequest.bmRequestType&0x1F)
{
case 0: //接收者为设备
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
case 1: //接收者为接口
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
case 2: //接收者为端点
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
case 3: //其它接收者
switch (Control_Data.DeviceRequest.bRequest)
{
default: break;
}
break;
default: break;
}
}
}
}
/******************************************************************************/
/**********************端点1输出***********************************************/
/*void endp1_out(void)
{
Prints("端点1输出.\r\n");
}*/
/******************************************************************************/
/*************************端点1输入*****************************************/
/*void endp1_in(void)
{
Prints("端点1输入.\r\n");
}*/
/******************************************************************************/
/***************************端点2输出****************************************/
void endp2_out(void)
{
uint8 i,j;
j=read_endpoint_buff(4,64,buffer);
LEDs=~buffer[0];
Prints("端点2输出.\r\n");
Prints(" 端点2的数据是 ");
for(i=0;i<j;i++)
{
PrintHex(buffer[i]);
if(i==16)Prints("\r\n");
}
Prints("\r\n");
}
/******************************************************************************/
//用来返回数据的缓冲
uint8 idata InBuffer[64];
/****************************主端点输入处理************************************/
void endp2_in(void)
{
uint8 i;
// Prints("端点2输入.\r\n");
KeyCanChange=0; //禁止修改按键值
if(KeyPress) //如果有按键按下
{
if(KeyPress&(KEY1)) //左Ctrl键
{
InBuffer[0] |=1;
}
else
{
InBuffer[0]&=~1;
}
if(KeyPress&(KEY2)) //左shift键
{
InBuffer[0]|=1<<1;
}
else
{
InBuffer[0]&=~(1<<1);
}
if(KeyPress&(KEY3)) //左ALT键
{
InBuffer[0]|=1<<2;
}
else
{
InBuffer[0]&=~(1<<2);
}
i=2;
if(KeyPress&(KEY4))
{
InBuffer[i++]=0x62; //0键
}
if(KeyPress&(KEY5))
{
InBuffer[i++]=0x59; //1键
}
if(KeyPress&(KEY6))
{
InBuffer[i++]=0x5A; //2键
}
if(KeyPress&(KEY7))
{
InBuffer[i++]=0x39; //Caps Lock键
}
if(KeyPress&(KEY8))
{
InBuffer[i++]=0x53; //Num Lock键
}
for(;i<8;i++)
{
InBuffer[i]=0; //多余的清0
}
}
else //如果无按键按下，则返回0
{
for(i=0;i<8;i++)
{
InBuffer[i]=0;
}
}
if(KeyUp||KeyDown)
{
//返回8个字节数据
KeyUp=0;
KeyDown=0;
write_endpoint_buff(5,8,InBuffer);
}
KeyCanChange=1; //允许修改按键值
}
/******************************************************************************/
code uint8 HeadTable[][74]={
"********************************************************************\r\n",
"****** EDN USB学习板键盘程序 ******\r\n",
"****** AT89S52 CPU ******\r\n",
"****** 建立日期：",__DATE__," ******\r\n",
"****** 建立时间：",__TIME__," ******\r\n",
"****** 作者：电脑圈圈 ******\r\n",
"****** 欢迎访问作者的 ******\r\n",
"****** USB专区：http://group.ednchina.com/93/ ******\r\n",
"****** BLOG1：http://www.ednchina.com/blog/computer00 ******\r\n",
"****** BLOG2：http://computer00.21ic.org ******\r\n",
"****** 请按K1-K8分别进行测试 ******\r\n",
"****** K1:左Ctrl键 K2:左Shift键 K3:左Alt键 K4:0键 ******\r\n",
"****** K5:1键 K6:2键 K7:Caps Lock键 K8:Num Lock键 ******\r\n",
"********************************************************************\r\n",
};
/***************************主函数**********************************************/
void main(void)
{
uint8 i;
InitUART(); //串口初始化
Printc(0x0c); //清屏
Printc(0x0c);
Prints("系统启动.\r\n");
for(i=0;i<18;i++) //显示信息
{
Prints(HeadTable[i]);
}
disconnect_usb(); //断开USB连接
delay(1000); //延迟
init_usb(); //初始化USB芯片
connect_usb(); //连接USB
InitKeyboard(); //
while(1)
{
if(!USB_INT) //中断产生
{
read_interrupt_register();
if(Interrupt_Register.Interrupt.bus_reset){usb_bus_reset();continue;}
if(Interrupt_Register.Interrupt.suspend_change){usb_bus_suspend();continue;}
if(Interrupt_Register.Interrupt.control_out_port){endp0_out();continue;}
if(Interrupt_Register.Interrupt.control_in_port&&usb_flags.flags.usb_endp0_in){endp0_in();continue;}
// if(Interrupt_Register.Interrupt.port_out_1)endp1_out();
// if(Interrupt_Register.Interrupt.port_in_1)endp1_in();
if(Interrupt_Register.Interrupt.main_out_port){endp2_out();}
if(Interrupt_Register.Interrupt.main_in_port){endp2_in();}
}
}
}
/******************************************************************************/
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