108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/* MSPDebug - debugging tool for the eZ430
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* Copyright (C) 2009, 2010 Daniel Beer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <termios.h>
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#include "uif.h"
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#include "util.h"
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#ifdef __APPLE__
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#define B460800 460800
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#define B500000 500000
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#endif
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struct uif_transport {
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struct transport base;
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int serial_fd;
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};
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static int serial_send(transport_t tr_base, const uint8_t *data, int len)
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{
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struct uif_transport *tr = (struct uif_transport *)tr_base;
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#ifdef DEBUG_SERIAL
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debug_hexdump("Serial transfer out:", data, len);
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#endif
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if (write_all(tr->serial_fd, data, len) < 0) {
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perror("uif: write error");
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return -1;
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}
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return 0;
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}
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static int serial_recv(transport_t tr_base, uint8_t *data, int max_len)
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{
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struct uif_transport *tr = (struct uif_transport *)tr_base;
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int r;
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r = read_with_timeout(tr->serial_fd, data, max_len);
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if (r < 0) {
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perror("uif: read error");
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return -1;
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}
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#ifdef DEBUG_SERIAL
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debug_hexdump("Serial transfer in", data, r);
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#endif
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return r;
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}
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static void serial_destroy(transport_t tr_base)
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{
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struct uif_transport *tr = (struct uif_transport *)tr_base;
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close(tr->serial_fd);
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free(tr);
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}
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transport_t uif_open(const char *device, int is_olimex)
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{
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struct uif_transport *tr = malloc(sizeof(*tr));
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if (!tr) {
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perror("uif: couldn't allocate memory");
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return NULL;
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}
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tr->base.send = serial_send;
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tr->base.recv = serial_recv;
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tr->base.destroy = serial_destroy;
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printf("Trying to open UIF on %s...\n", device);
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tr->serial_fd = open_serial(device, is_olimex ? B500000 : B460800);
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if (tr->serial_fd < 0) {
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fprintf(stderr, "uif: can't open serial device: %s: %s\n",
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device, strerror(errno));
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free(tr);
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return NULL;
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}
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return (transport_t)tr;
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}
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