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/*
USBAPI.h
Copyright (c) 2005-2014 Arduino. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __USBAPI__
#define __USBAPI__
#include <inttypes.h>
#include <avr/pgmspace.h>
#include <avr/eeprom.h>
#include <avr/interrupt.h>
#include <util/delay.h>
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned long u32;
#include "Arduino.h"
// This definitions is usefull if you want to reduce the EP_SIZE to 16
// at the moment only 64 and 16 as EP_SIZE for all EPs are supported except the control endpoint
#ifndef USB_EP_SIZE
#define USB_EP_SIZE 64
#endif
#if defined(USBCON)
#include "USBDesc.h"
#include "USBCore.h"
//================================================================================
//================================================================================
// USB
#define EP_TYPE_CONTROL (0x00)
#define EP_TYPE_BULK_IN ((1<<EPTYPE1) | (1<<EPDIR))
#define EP_TYPE_BULK_OUT (1<<EPTYPE1)
#define EP_TYPE_INTERRUPT_IN ((1<<EPTYPE1) | (1<<EPTYPE0) | (1<<EPDIR))
#define EP_TYPE_INTERRUPT_OUT ((1<<EPTYPE1) | (1<<EPTYPE0))
#define EP_TYPE_ISOCHRONOUS_IN ((1<<EPTYPE0) | (1<<EPDIR))
#define EP_TYPE_ISOCHRONOUS_OUT (1<<EPTYPE0)
class USBDevice_
{
public:
USBDevice_();
bool configured();
void attach();
void detach(); // Serial port goes down too...
void poll();
bool wakeupHost(); // returns false, when wakeup cannot be processed
};
extern USBDevice_ USBDevice;
//================================================================================
//================================================================================
// Serial over CDC (Serial1 is the physical port)
struct ring_buffer;
#ifndef SERIAL_BUFFER_SIZE
#if ((RAMEND - RAMSTART) < 1023)
#define SERIAL_BUFFER_SIZE 16
#else
#define SERIAL_BUFFER_SIZE 64
#endif
#endif
#if (SERIAL_BUFFER_SIZE>256)
#error Please lower the CDC Buffer size
#endif
class Serial_ : public Stream
{
public:
Serial_() {};
void begin(unsigned long) {}
void begin(unsigned long, uint8_t) {}
void end(void) {}
virtual int available(void) { return -1; }
virtual int peek(void) { return -1; }
virtual int read(void) { return -1; }
virtual int availableForWrite(void) { return 0; }
virtual void flush(void) {}
virtual size_t write(uint8_t) { return 1; }
virtual size_t write(const uint8_t*, size_t n) { return n; }
using Print::write; // pull in write(str) and write(buf, size) from Print
operator bool() { return true; }
// This method allows processing "SEND_BREAK" requests sent by
// the USB host. Those requests indicate that the host wants to
// send a BREAK signal and are accompanied by a single uint16_t
// value, specifying the duration of the break. The value 0
// means to end any current break, while the value 0xffff means
// to start an indefinite break.
// readBreak() will return the value of the most recent break
// request, but will return it at most once, returning -1 when
// readBreak() is called again (until another break request is
// received, which is again returned once).
// This also mean that if two break requests are received
// without readBreak() being called in between, the value of the
// first request is lost.
// Note that the value returned is a long, so it can return
// 0-0xffff as well as -1.
int32_t readBreak() { return -1; };
// These return the settings specified by the USB host for the
// serial port. These aren't really used, but are offered here
// in case a sketch wants to act on these settings.
uint32_t baud() { return 0; }
uint8_t stopbits() { return 1; }
uint8_t paritytype() { return 0; }
uint8_t numbits() { return 8; }
bool dtr() { return true; }
bool rts() { return true; }
enum {
ONE_STOP_BIT = 0,
ONE_AND_HALF_STOP_BIT = 1,
TWO_STOP_BITS = 2,
};
enum {
NO_PARITY = 0,
ODD_PARITY = 1,
EVEN_PARITY = 2,
MARK_PARITY = 3,
SPACE_PARITY = 4,
};
};
extern Serial_ Serial;
#define HAVE_CDCSERIAL
//================================================================================
//================================================================================
// Low level API
typedef struct
{
uint8_t bmRequestType;
uint8_t bRequest;
uint8_t wValueL;
uint8_t wValueH;
uint16_t wIndex;
uint16_t wLength;
} USBSetup;
//================================================================================
//================================================================================
// MSC 'Driver'
int MSC_GetInterface(uint8_t* interfaceNum);
int MSC_GetDescriptor(int i);
bool MSC_Setup(USBSetup& setup);
bool MSC_Data(uint8_t rx,uint8_t tx);
//================================================================================
//================================================================================
// CSC 'Driver'
int CDC_GetInterface(uint8_t* interfaceNum);
int CDC_GetDescriptor(int i);
bool CDC_Setup(USBSetup& setup);
//================================================================================
//================================================================================
#define TRANSFER_PGM 0x80
#define TRANSFER_RELEASE 0x40
#define TRANSFER_ZERO 0x20
int USB_SendControl(uint8_t flags, const void* d, int len);
int USB_RecvControl(void* d, int len);
int USB_RecvControlLong(void* d, int len);
uint8_t USB_Available(uint8_t ep);
uint8_t USB_SendSpace(uint8_t ep);
int USB_Send(uint8_t ep, const void* data, int len); // blocking
int USB_Recv(uint8_t ep, void* data, int len); // non-blocking
int USB_Recv(uint8_t ep); // non-blocking
void USB_Flush(uint8_t ep);
#endif
#endif /* if defined(USBCON) */
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