/*

  * Copyright (c) 2003 Bernd Walter

  * All rights reserved.

  */

 /*  Example Source Code for USB Enumeration using a PDIUSBD11 connected to a PIC16F87x

  *  Copyright 2001 Craig Peacock, Craig.Peacock@beyondlogic.org

  *  31th December 2001 http://www.beyondlogic.org            				      

  */

 typedef struct {

     uint8_t bmRequestType;

     uint8_t bRequest;

     uint16_t wValue;

     uint16_t wIndex;

     uint16_t wLength;

 }  __attribute__ ((packed)) USB_SETUP_REQUEST;

 typedef struct {

     uint8_t bLength;

     uint8_t bDescriptorType;

     uint16_t bcdUSB;

     uint8_t bDeviceClass;

     uint8_t bDeviceSubClass;

     uint8_t bDeviceProtocol;

     uint8_t bMaxPacketSize0;

     uint16_t idVendor;

     uint16_t idProduct;

     uint16_t bcdDevice;

     uint8_t iManufacturer;

     uint8_t iProduct;

     uint8_t iSerialNumber;

     uint8_t bNumConfigurations;

 } __attribute__ ((packed))  USB_DEVICE_DESCRIPTOR;

 typedef struct {

     uint8_t bLength;

     uint8_t bDescriptorType;

     uint8_t bEndpointAddress;

     uint8_t bmAttributes;

     uint16_t wMaxPacketSize;

     uint8_t bInterval;

 } __attribute__ ((packed))  USB_ENDPOINT_DESCRIPTOR;

 typedef struct {

     uint8_t bLength;

     uint8_t bDescriptorType;

     uint16_t wTotalLength;

     uint8_t bNumInterfaces;

     uint8_t bConfigurationValue;

     uint8_t iConfiguration;

     uint8_t bmAttributes;

     uint8_t MaxPower;

 } __attribute__ ((packed))  USB_CONFIGURATION_DESCRIPTOR;

 typedef struct {

     uint8_t bLength;

     uint8_t bDescriptorType;

     uint8_t bInterfaceNumber;

     uint8_t bAlternateSetting;

     uint8_t bNumEndpoints;

     uint8_t bInterfaceClass;

     uint8_t bInterfaceSubClass;

     uint8_t bInterfaceProtocol;

     uint8_t iInterface;

 } __attribute__ ((packed))  USB_INTERFACE_DESCRIPTOR;

 typedef struct {

     uint8_t bLength;

     uint8_t bDescriptorType;

     uint16_t wHIDClassSpecComp;

     uint8_t bCountry;

     uint8_t bNumDescriptors;

     uint8_t b1stDescType;

     uint16_t w1stDescLength;

 } __attribute__ ((packed))  USB_HID_DESCRIPTOR;

 typedef struct {

     USB_CONFIGURATION_DESCRIPTOR ConfigDescriptor;

     USB_INTERFACE_DESCRIPTOR InterfaceDescriptor0;

     USB_ENDPOINT_DESCRIPTOR EndpointDescriptor00;

     USB_ENDPOINT_DESCRIPTOR EndpointDescriptor01;

     USB_INTERFACE_DESCRIPTOR InterfaceDescriptor1;

     USB_ENDPOINT_DESCRIPTOR EndpointDescriptor10;

     USB_ENDPOINT_DESCRIPTOR EndpointDescriptor11;

 } __attribute__ ((packed))  USB_CONFIG_DATA;

 typedef struct {

     uint8_t bLength;

     uint8_t bDescriptorType;

     char     bString[];

 } __attribute__ ((packed))  STRING_DESCRIPTOR;

 typedef struct {

     uint8_t bLength;

     uint8_t bDescriptorType;

     uint16_t wLANGID0;

 } __attribute__ ((packed))  LANGID_DESCRIPTOR;

 #define D12_SET_ADDRESS_ENABLE		0xd0

 #define D12_SET_ENDPOINT_ENABLE  	0xd8

 #define D12_SET_MODE			0xf3

 #define D12_SET_DMA			0xfb

 #define D12_READ_INTERRUPT_REGISTER 	0xf4

 #define D12_READ_BUFFER			0xf0

 #define D12_WRITE_BUFFER		0xf0

 #define D12_ACK_SETUP			0xf2

 #define D12_CLEAR_BUFFER		0xf2

 #define D12_VALIDATE_BUFFER		0xfa

 #define D12_READ_LAST_TRANSACTION	0x40

 #define D12_SET_ENDPOINT_STATUS		0x40

 #define D12_READ_ENDPOINT_STATUS	0x80

 #define D12_READ_CHIP_ID		0xfd

 #define D12_ENDPOINT_EP0_OUT 		0x00

 #define D12_ENDPOINT_EP0_IN 		0x01

 #define D12_ENDPOINT_EP1_OUT 		0x02

 #define D12_ENDPOINT_EP1_IN 		0x03

 #define D12_ENDPOINT_EP2_OUT 		0x04

 #define D12_ENDPOINT_EP2_IN 		0x05

 #define D12_INT_EP0_OUT			0x01

 #define D12_INT_EP0_IN			0x02

 #define D12_INT_EP1_OUT			0x04

 #define D12_INT_EP1_IN			0x08

 #define D12_INT_EP2_OUT			0x10

 #define D12_INT_EP2_IN			0x20

 #define D12_INT_BUS_RESET		0x40

 #define D12_INT_SUSPEND			0x80

 #define D12_LAST_TRAN_OK		0x01

 #define D12_LAST_TRAN_ERRMSK		0x1e

 #define D12_LAST_TRAN_SETUP		0x20

 #define D12_LAST_TRAN_DATA		0x40

 #define D12_LAST_TRAN_OFLOW		0x80

 #define STANDARD_DEVICE_REQUEST		0x00

 #define STANDARD_INTERFACE_REQUEST	0x01

 #define STANDARD_ENDPOINT_REQUEST	0x02

 #define VENDOR_DEVICE_REQUEST		0x40

 #define VENDOR_INTERFACE_REQUEST	0x41

 #define VENDOR_ENDPOINT_REQUEST		0x42

 #define GET_STATUS  			0

 #define CLEAR_FEATURE     		1

 #define SET_FEATURE                 	3

 #define SET_ADDRESS                 	5

 #define GET_DESCRIPTOR              	6

 #define SET_DESCRIPTOR              	7

 #define GET_CONFIGURATION           	8

 #define SET_CONFIGURATION           	9

 #define GET_INTERFACE               	10

 #define SET_INTERFACE               	11

 #define SYNCH_FRAME                 	12

 #define VENDOR_DOTEMP			125

 #define VENDOR_UPDATE			126

 #define VENDOR_RESET			127

 #define	ENDPOINT_HALT			0

 #define TYPE_DEVICE_DESCRIPTOR          1

 #define TYPE_CONFIGURATION_DESCRIPTOR   2

 #define TYPE_STRING_DESCRIPTOR          3

 #define TYPE_INTERFACE_DESCRIPTOR       4

 #define TYPE_ENDPOINT_DESCRIPTOR        5

 #define TYPE_HID_DESCRIPTOR		0x21

 #define USB_ENDPOINT_TYPE_CONTROL	0x00

 #define USB_ENDPOINT_TYPE_ISOCHRONOUS	0x01

 #define USB_ENDPOINT_TYPE_BULK		0x02

 #define USB_ENDPOINT_TYPE_INTERRUPT	0x03

 /* Function prototypes */

 uint8_t		d12_get_data(void);

 void		d12_set_data(uint8_t data);

 void		d12_set_cmd(uint8_t cmd);

 void		d12_write_cmd(uint8_t command, const uint8_t *buffer, uint8_t count);

 void		d12_read_cmd(uint8_t command, uint8_t *buffer, uint8_t count);

 uint8_t		d12_read_endpt(uint8_t endpt, uint8_t *buffer);

 void		d12_ep0_irq(void);

 void		d12_handle_setup(void);

 void		d12_getdescriptor(USB_SETUP_REQUEST *setuppkt);

 void		d12_stallendpt(uint8_t ep);

 uint8_t		d12_read_endpt(uint8_t endpt, uint8_t *buffer);

 void		d12_write_endpt(uint8_t endpt, const uint8_t *buffer, uint8_t bytes);

 void		d12_send_data_ep0(void);

 void		d12_receive_data_ep1(void);

 void		d12_send_data_ep2(void);

 void		d12_receive_data_ep2(void);

 void 		reset(void);

 void		usb_init(void);

 void		usb_intr(void);

 void		usb_gendata(void);

 /*

  * The PDIUSBD12 is wired up like so

  *

  *  PDI		     AVR	

  * ======================

  * D7:0     <=>     PA7:0	   

  * RD_N     <=      PB0

  * INT_N     =>     PB1

  * WR_N     <=      PB2

  * A0       <=      PB3 (0 = data, 1 = cmd)

  * SUSPEND  <=>     PB4

  */

 #define PDIPORT	PORTA

 #define PDIDDR	PORTA

 #define PDICTL	PORTB

 #define PDIRD	PB0

 #define PDIINT	PB1

 #define PDIWR	PB2

 #define PDIA0	PB3

 #define PDISUSP	PB4