152 lines
2.8 KiB
C
152 lines
2.8 KiB
C
/* MSPDebug - debugging tool for MSP430 MCUs
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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 <ctype.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 <sys/stat.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <unistd.h>
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#include <errno.h>
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#include <signal.h>
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#include <assert.h>
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#include "util.h"
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static volatile int ctrlc_flag;
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static void sigint_handler(int signum)
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{
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ctrlc_flag = 1;
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}
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void ctrlc_init(void)
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{
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const static struct sigaction siga = {
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.sa_handler = sigint_handler,
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.sa_flags = 0
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};
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sigaction(SIGINT, &siga, NULL);
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}
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void ctrlc_reset(void)
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{
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ctrlc_flag = 0;
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}
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int ctrlc_check(void)
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{
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return ctrlc_flag;
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}
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void hexdump(int addr, const u_int8_t *data, int len)
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{
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int offset = 0;
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while (offset < len) {
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int i, j;
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/* Address label */
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printf(" %04x:", offset + addr);
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/* Hex portion */
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for (i = 0; i < 16 && offset + i < len; i++)
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printf(" %02x", data[offset + i]);
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for (j = i; j < 16; j++)
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printf(" ");
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/* Printable characters */
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printf(" |");
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for (j = 0; j < i; j++) {
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int c = data[offset + j];
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printf("%c", (c >= 32 && c <= 126) ? c : '.');
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}
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for (; j < 16; j++)
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printf(" ");
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printf("|\n");
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offset += i;
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}
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}
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int read_with_timeout(int fd, u_int8_t *data, int max_len)
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{
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int r;
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do {
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struct timeval tv = {
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.tv_sec = 5,
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.tv_usec = 0
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};
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fd_set set;
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FD_ZERO(&set);
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FD_SET(fd, &set);
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r = select(fd + 1, &set, NULL, NULL, &tv);
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if (r > 0)
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r = read(fd, data, max_len);
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if (!r)
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errno = ETIMEDOUT;
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if (r <= 0 && errno != EINTR)
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return -1;
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} while (r <= 0);
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return r;
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}
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int write_all(int fd, const u_int8_t *data, int len)
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{
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while (len) {
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int result = write(fd, data, len);
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if (result < 0) {
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if (errno == EINTR)
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continue;
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return -1;
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}
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data += result;
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len -= result;
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}
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return 0;
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}
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int open_serial(const char *device, int rate)
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{
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int fd = open(device, O_RDWR | O_NOCTTY);
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struct termios attr;
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tcgetattr(fd, &attr);
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cfmakeraw(&attr);
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cfsetspeed(&attr, rate);
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if (tcsetattr(fd, TCSAFLUSH, &attr) < 0)
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return -1;
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return fd;
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}
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