mac-rom-simm-programmer/hal/at90usb646/usbcdc_hw.h

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/*
* usbcdc_hw.h
*
* Created on: Nov 22, 2020
* Author: Doug
*
* Copyright (C) 2011-2020 Doug Brown
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef HAL_AT90USB646_USBCDC_HW_H_
#define HAL_AT90USB646_USBCDC_HW_H_
#include "LUFA/Drivers/USB/USB.h"
#include "cdc_device_definition.h"
#include "../../util.h"
/** Sends a byte over the USB CDC serial port
*
* @param byte The byte to send
*/
static ALWAYS_INLINE void USBCDC_SendByte(uint8_t byte)
{
CDC_Device_SendByte(&VirtualSerial_CDC_Interface, byte);
}
/** Sends a block of data over the USB CDC serial port
*
* @param data The data to send
* @param len The number of bytes
* @return True on success, false on failure
*/
static ALWAYS_INLINE bool USBCDC_SendData(uint8_t const *data, uint16_t len)
{
return CDC_Device_SendData(&VirtualSerial_CDC_Interface, (char const *)data, len) == ENDPOINT_RWSTREAM_NoError;
}
/** Attempts to read a byte from the USB CDC serial port
*
* @return The byte read, or -1 if there are no bytes available
*/
static ALWAYS_INLINE int16_t USBCDC_ReadByte(void)
{
return CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
}
/** Reads a byte from the USB CDC serial port. Blocks until one is available.
*
* @return The byte read
*/
static ALWAYS_INLINE uint8_t USBCDC_ReadByteBlocking(void)
{
int16_t b;
do
{
b = USBCDC_ReadByte();
} while (b < 0);
return (uint8_t)b;
}
/** Forces any transmitted data to be sent over USB immediately
*
*/
static ALWAYS_INLINE inline void USBCDC_Flush(void)
{
CDC_Device_Flush(&VirtualSerial_CDC_Interface);
}
#endif /* HAL_AT90USB646_USBCDC_HW_H_ */