Move manual bit-banging debug code to separate file

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/ccdbg-manual.c b/ccdbg-manual.c
new file mode 100644 (file)
index 0000000..b83dc45
--- /dev/null
+++ b/ccdbg-manual.c
@@ -0,0 +1,70 @@
+/*
+ * 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);
+       }
+}