2 * Copyright © 2008 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20 #include "cc-bitbang.h"
23 * Manual bit-banging to debug the low level protocol
27 get_bit(char *line, int i, char on, uint8_t bit, uint8_t *bits, uint8_t *masks)
41 fprintf(stderr, "bad line %s\n", line);
46 ccdbg_manual(struct ccdbg *dbg, FILE *input)
51 if (dbg->bb == NULL) {
52 fprintf(stderr, "Must use bitbang API for manual mode\n");
55 while (fgets(line, sizeof line, input)) {
56 if (line[0] == '#' || line[0] == '\n') {
62 get_bit(line, 0, 'C', CC_CLOCK, &set, &mask);
63 get_bit(line, 2, 'D', CC_DATA, &set, &mask);
64 get_bit(line, 4, 'R', CC_RESET_N, &set, &mask);
65 if (mask != (CC_CLOCK|CC_DATA|CC_RESET_N)) {
67 cc_bitbang_read(dbg->bb, &read);
68 cc_bitbang_sync(dbg->bb);
69 cc_bitbang_print("\t%c %c %c", CC_CLOCK|CC_DATA|CC_RESET_N, read);
70 if ((set & CC_CLOCK) == 0)
71 printf ("\t%d", (read&CC_DATA) ? 1 : 0);
74 cc_bitbang_send(dbg->bb, mask, set);
75 cc_bitbang_sync(dbg->bb);