ao-tools/lib: Deal with binary USB data in debugging output

Dump non-ascii characters in hex format.

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

diff --git a/ao-tools/lib/cc-usb.c b/ao-tools/lib/cc-usb.c
index f82752435d03c48126253541e8b5af8d5a653b63..485583f98b3897c1816547ffc4b7ae95ee32a6b1 100644 (file)
--- a/ao-tools/lib/cc-usb.c
+++ b/ao-tools/lib/cc-usb.c
@@ -140,7 +140,10 @@ cc_usb_dbg(int indent, uint8_t *bytes, int len)
                case '\n':
                        eol = 1;
                default:
-                       ccdbg_debug(CC_DEBUG_BITBANG, "%c", c);
+                       if (c < ' ' || c > '~')
+                               ccdbg_debug(CC_DEBUG_BITBANG, "\\%02x", c);
+                       else
+                               ccdbg_debug(CC_DEBUG_BITBANG, "%c", c);
                }
        }
 }
@@ -190,6 +193,7 @@ _cc_usb_sync(struct cc_usb *cc, int wait_for_input)
                        ret = read(cc->fd, cc->in_buf + cc->in_count,
                                   CC_IN_BUF - cc->in_count);
                        if (ret > 0) {
+                               int i;
                                cc_usb_dbg(24, cc->in_buf + cc->in_count, ret);
                                cc->in_count += ret;
                                if (cc->hex_count)