📄 usb.c
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/**************************************************************************
* H E A D E R F I L E S
*************************************************************************/
#include "stdio.h"
#include<ABSACC.H>
#include <reg51.h>
#include <intrins.h>
#include "AT89C51SND.h"
#include "typedef.h"
#include "config.h"
#include "constant.h"
#include "usb.h"
#include "global.h"
#include "gpio.h"
#include "macro.h"
#include "external.h"
/********************************************
*
*GET_DESCRIPTOR(Device Descriptor = 18 byte)
*
********************************************/
code UINT8 USB_DeviceDescriptor[] =
{
0x12, /*bLength:*/
0x01, /*bDescriptorType*/
0x10, 0x01, /*bcdUSB*/
0x00, /*bDeviceClass*/
0x00, /*bDeviceSubClass*/
0x00, /*bDeviceProtocol*/
0x08, /*bMaxPacketSize0*/
0x34, 0x22, /*idVendor*/
0x78, 0x56, /*idProduct*/
0x01, 0x00, /*bcdDevice*/
0x01, /*iManufacturer*/
0x02, /*iProduct*/
0x03, /*iSerialNumber*/
0x01, /*bNumConfigurations*/
};
/********************************************
*
*GET_DESCRIPTOR(Configuration Descriptor = 34 byte)
*
********************************************/
code UINT8 USB_ConfigurationDescriptor[] =
{
0x09, /*bLength*/
0x02, /*bDescriptorType*/
0x20, 0x00, /*wTotalLength*/
0x01, /*bNumInterfaces*/
0x01, /*bConfigurationValue*/
0x00, /*iConfiguration*/
0x80, /*bmAttributes*/
0xFA, /*bMaxPower*/
/*Interface Descriptor(0x09 byte)*/
0x09, /*bLength */
0x04, /*bDescriptorType */
0x00, /*bInterfaceNumber*/
0x00, /*bAlternateSetting*/
0x02, /*bNumEndpoints:*/
0x08, /*bInterfaceClass*/
0x06, /*bInterfaceSubClass:*/
0x50, /*bInterfaceProtocol*/
0x00, /*iInterface*/
/*Endpoint Descriptor (0x07 byte)*/
0x07, /*bLength:*/
0x05, /*bDescriptorType:*/
0x81, /*bEndpointAddress*/
0x02, /*bmAttributes*/
0x40, 0x00, /*wMaxPacketSize*/
0x00, /*bInterval: ignored*/
/*Endpoint Descriptor (0x07 byte)*/
0x07, /*bLength:*/
0x05, /*bDescriptorType:*/
0x02, /*bEndpointAddress*/
0x02, /*bmAttributes*/
0x40, 0x00, /*wMaxPacketSize*/
0x00, /*bInterval: ignored*/
};
/********************************************
*
*GET_DESCRIPTOR(STRING Descriptor = 4 byte)
*
********************************************/
code UINT8 USB_LanguageIdString[] =
{
0x04, /*bLength*/
0x03, /*bDescriptorType: STRING*/
0x09, 0x04, /*bString: English (US)*/
};
/********************************************
*
*GET_DESCRIPTOR(STRING Descriptor = 32 byte)
*
********************************************/
code UINT8 USB_ManufacturerString[] =
{
0x20, /*bLength*/
0x03, /*bDescriptorType: STRING*/
'a', 0x00,
't', 0x00,
'm', 0x00,
'e', 0x00,
'l', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
' ', 0x00,
};
/********************************************
*
*GET_DESCRIPTOR(STRING Descriptor = 48 byte)
*
********************************************/
code UINT8 USB_ProductString[] =
{
0x30, /*bLength*/
0x03, /*bDescriptorType: STRING*/
'a',0x00,
't',0x00,
'm',0x00,
'e',0x00,
'l',0x00,
'a',0x00,
't',0x00,
'8',0x00,
'9',0x00,
'c',0x00,
'5',0x00,
'1',0x00,
's',0x00,
'n',0x00,
'd',0x00,
'1',0x00,
'c',0x00,
' ',0x00,
' ',0x00,
' ',0x00,
' ',0x00,
' ',0x00,
' ',0x00,
};
/********************************************
*
*GET_DESCRIPTOR(STRING Descriptor = 18 byte)
*
********************************************/
code UINT8 USB_SerialNumberString[] =
{
0x12, /*bLength*/
0x03, /*bDescriptorType: STRING*/
'0', 0x00, /*bString: 01.00.00*/
'1', 0x00,
'.', 0x00,
'0', 0x00,
'0', 0x00,
'.', 0x00,
'0', 0x00,
'0', 0x00,
};
/**************************************************************************
*
* Function Name: usb_init
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_init(void ){
Pll_ndiv(1);
Pll_rdiv(11);
Pll_enable();
Set_Usb_clock(1);
Usb_enable(); /*Enable usb controller*/
Reset_All_Ep();
Stop_Reset_All_Ep();
Usb_sel_ep(0); /*select ep0*/
UEPCONX = 0x80;
}
/**************************************************************************
*
* Function Name: usb_task
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_task (void)
{
if (Usb_reset_event())
{
Clear_Usb_reset_event();
printf("USB RESET detection\n ");
}
if (Usb_ep_int_event() == 0x01)
{
Usb_sel_ep(0);
if (Usb_setup_packet_receive())
{
usb_do_enumeration();
}
}
}
/**************************************************************************
*
* Function Name:usb_do_enumeration
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_do_enumeration (void)
{
Usb_sel_ep(0x00);
UsbCtrlCmd.bmRequestType = UEPDATX;
UsbCtrlCmd.bRequest = UEPDATX;
UsbCtrlCmd.wValue = UEPDATX;
UsbCtrlCmd.wValue |= UEPDATX<<8;
UsbCtrlCmd.wIndex =UEPDATX;
UsbCtrlCmd.wIndex |=UEPDATX<<8;
UsbCtrlCmd.wLength = UEPDATX;
UsbCtrlCmd.wLength |= UEPDATX<<8;
#if 1
printf("UsbCtrlCmd.bmRequestType = %x\n",UsbCtrlCmd.bmRequestType);
printf("UsbCtrlCmd.bRequest=%x\n",UsbCtrlCmd.bRequest);
printf("UsbCtrlCmd.wValue=%x\n",UsbCtrlCmd.wValue);
printf("UsbCtrlCmd.wIndex=%x\n",UsbCtrlCmd.wIndex);
printf("UsbCtrlCmd.wLength=%x\n",UsbCtrlCmd.wLength);
#endif
if((UsbCtrlCmd.bmRequestType&0x20) == 0x00){
usb_standard_request();
}
else if((UsbCtrlCmd.bmRequestType&0x20) == 0x20){
usb_class_request();
}
}
/**************************************************************************
*
* Function Name:usb_standard_request
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_standard_request(void)
{
switch (UsbCtrlCmd.bRequest)
{
case USB_GET_DESCRIPTOR:
usb_GetDescriptor();
break;
case USB_GET_CONFIGURATION:
usb_get_configuration();
break;
case USB_SET_ADDRESS:
usb_set_address();
break;
case USB_SET_CONFIGURATION:
usb_set_configuration();
break;
case USB_CLEAR_FEATURE:
usb_clear_feature();
break;
case USB_SET_FEATURE:
usb_set_feature();
break;
case USB_GET_STATUS:
usb_get_status();
break;
default:
break;
}
}
/**************************************************************************
*
* Function Name:usb_class_request
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_class_request(void)
{
switch (UsbCtrlCmd.bRequest)
{
case HID_SET_IDLE:
hid_set_idle();
break;
case USB_GET_MAX_LUN:
printf("USB_GET_MAX_LUN\n");
usb_get_max_lun();
break;
default:
break;
}
}
/**************************************************************************
*
* Function Name:usb_GetDescriptor
*
* Descriptions:
*
* Arguments:
*
* Returns: None
*
**************************************************************************/
void usb_GetDescriptor(void){
UINT8 data_to_send;
UINT8 des_type,i;
UINT8 desc_ptr = 0;
UINT8 zeroflag = 0;
UINT8 ret;
Usb_set_DIR_bit();
des_type = UsbCtrlCmd.wValue>>8;/*read wValue msb*/
switch (des_type)
{
case USB_DEVICE_DESC:
{
G_pucCtrlDataPointer = (UINT8 *)USB_DeviceDescriptor;
data_to_send = sizeof(USB_DeviceDescriptor);
break;
}
case USB_CONFIGURATION_DESC:
{
G_pucCtrlDataPointer = (UINT8 *)USB_ConfigurationDescriptor;
data_to_send = sizeof(USB_ConfigurationDescriptor);
break;
}
case USB_STRING_DESC:
{
des_type = UsbCtrlCmd.wValue & 0xff;
switch (des_type)
{
case USB_LANG_ID:
{
G_pucCtrlDataPointer = (UINT8 *)USB_LanguageIdString;
data_to_send = sizeof(USB_LanguageIdString);
break;
}
case USB_MAN_INDEX:
{
G_pucCtrlDataPointer = (UINT8 *)USB_ManufacturerString;
data_to_send = sizeof(USB_ManufacturerString);
break;
}
case USB_PROD_INDEX:
{
G_pucCtrlDataPointer = (UINT8 *)USB_ProductString;
data_to_send = sizeof(USB_ProductString);
break;
}
case USB_SN_INDEX:
{
G_pucCtrlDataPointer = (UINT8 *)USB_SerialNumberString;
data_to_send = sizeof(USB_SerialNumberString);
break;
}
default:
{
return;
}
}
break;
}
default:
{
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