diff options
author | tmk <nobody@nowhere> | 2012-06-08 00:37:46 +0900 |
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committer | tmk <nobody@nowhere> | 2012-06-08 13:32:38 +0900 |
commit | afb08462085132acf7a1962522952f7dbf064519 (patch) | |
tree | bc60f28142bc36d882f5930191ba8da98a27c47c /x68k_usb/x68k.c | |
parent | 63d82fcaeb78d0764f39667b937262ed4a692c17 (diff) |
Made directories for keyboard and converter projects.
Diffstat (limited to 'x68k_usb/x68k.c')
-rw-r--r-- | x68k_usb/x68k.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/x68k_usb/x68k.c b/x68k_usb/x68k.c deleted file mode 100644 index d17af51cc2..0000000000 --- a/x68k_usb/x68k.c +++ /dev/null @@ -1,75 +0,0 @@ -/* -Copyright 2012 Jun WAKO <wakojun@gmail.com> - -This software is licensed with a Modified BSD License. -All of this is supposed to be Free Software, Open Source, DFSG-free, -GPL-compatible, and OK to use in both free and proprietary applications. -Additions and corrections to this file are welcome. - - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: - -* Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - -* Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - -* Neither the name of the copyright holders nor the names of - contributors may be used to endorse or promote products derived - from this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. -*/ - -#include <stdbool.h> -#include <avr/io.h> -#include <avr/interrupt.h> -#include "x68k.h" - - -void x68k_init(void) -{ - KBD_RX_INIT(); -} - -// RX ring buffer -#define RBUF_SIZE 8 -static uint8_t rbuf[RBUF_SIZE]; -static uint8_t rbuf_head = 0; -static uint8_t rbuf_tail = 0; - -uint8_t x68k_recv(void) -{ - uint8_t data = 0; - if (rbuf_head == rbuf_tail) { - return 0; - } - - data = rbuf[rbuf_tail]; - rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE; - return data; -} - -// USART RX complete interrupt -ISR(KBD_RX_VECT) -{ - uint8_t next = (rbuf_head + 1) % RBUF_SIZE; - if (next != rbuf_tail) { - rbuf[rbuf_head] = KBD_RX_DATA; - rbuf_head = next; - } -} |