65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
|
/**
|
||
|
|
* Copyright (C) 2009 Ubixum, Inc.
|
||
|
|
*
|
||
|
|
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
**/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#include <eputils.h>
|
||
|
|
|
||
|
|
#include <fx2regs.h>
|
||
|
|
|
||
|
|
#ifdef DEBUG_EPUTILS
|
||
|
|
#include <stdio.h>
|
||
|
|
#else
|
||
|
|
#define printf(...)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void
|
||
|
|
readep0(BYTE * dst, WORD len)
|
||
|
|
{
|
||
|
|
WORD read = 0; // n bytes read
|
||
|
|
BYTE c, avail;
|
||
|
|
while (read < len) {
|
||
|
|
EP0BCH = 0;
|
||
|
|
// NOTE need syncdelay?
|
||
|
|
EP0BCL = 0; // re-arm ep so host can send more
|
||
|
|
while (EP0CS & bmEPBUSY);
|
||
|
|
avail = EP0BCL; // max size fits in one byte (64 bytes)
|
||
|
|
for (c = 0; c < avail; ++c)
|
||
|
|
dst[read + c] = EP0BUF[c];
|
||
|
|
read += avail;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void
|
||
|
|
writeep0(BYTE * src, WORD len)
|
||
|
|
{
|
||
|
|
WORD written = 0;
|
||
|
|
BYTE c;
|
||
|
|
while (written < len) {
|
||
|
|
while (EP0CS & bmEPBUSY); // wait
|
||
|
|
for (c = 0; c < 64 && written < len; ++c) {
|
||
|
|
EP0BUF[c] = src[written++];
|
||
|
|
}
|
||
|
|
EP0BCH = 0;
|
||
|
|
EP0BCL = c;
|
||
|
|
printf("Write %d bytes\n", c);
|
||
|
|
}
|
||
|
|
}
|