--- /dev/null
+/*
+ * Copyright © 2008 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ccdbg.h"
+
+/*
+ * Manual bit-banging to debug the low level protocol
+ */
+
+static void
+get_bit(char *line, int i, char on, uint8_t bit, uint8_t *bits, uint8_t *masks)
+{
+ if (line[i] == on) {
+ *bits |= bit;
+ *masks |= bit;
+ return;
+ }
+ if (line[i] == '.') {
+ *masks |= bit;
+ return;
+ }
+ if (line[i] == '-') {
+ return;
+ }
+ fprintf(stderr, "bad line %s\n", line);
+ exit (1);
+}
+
+void
+ccdbg_manual(struct ccdbg *dbg, FILE *input)
+{
+ char line[80];
+ uint8_t set, mask;
+
+ while (fgets(line, sizeof line, input)) {
+ if (line[0] == '#' || line[0] == '\n') {
+ printf ("%s", line);
+ continue;
+ }
+ set = 0;
+ mask = 0;
+ get_bit(line, 0, 'C', CC_CLOCK, &set, &mask);
+ get_bit(line, 2, 'D', CC_DATA, &set, &mask);
+ get_bit(line, 4, 'R', CC_RESET_N, &set, &mask);
+ if (mask != (CC_CLOCK|CC_DATA|CC_RESET_N)) {
+ uint8_t read;
+ read = ccdbg_read(dbg);
+ ccdbg_print("\t%c %c %c", CC_CLOCK|CC_DATA|CC_RESET_N, read);
+ if ((set & CC_CLOCK) == 0)
+ printf ("\t%d", (read&CC_DATA) ? 1 : 0);
+ printf ("\n");
+ }
+ ccdbg_send(dbg, mask, set);
+ }
+}