mirror of
https://github.com/dougg3/mac-rom-simm-programmer.git
synced 2024-11-19 01:11:04 +00:00
2943b80c42
This was a suggestion from bigmessowires. Do a tight loop when reading a chunk of 1024 bytes. It's faster.
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/*
|
|
* 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_ */
|