X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=lib%2Fccdbg-io.c;h=9c6693cdbe0ad5a0698cdcfc8b214761b877b148;hp=acd44f10ac13cbb0ea51aef051403ec16ba7ae82;hb=26095fc0511ee0d5213f038986032f7c59964cf0;hpb=543bedde83cbce5145668e72965e02d892187b59

diff --git a/lib/ccdbg-io.c b/lib/ccdbg-io.c
index acd44f10..9c6693cd 100644
--- a/lib/ccdbg-io.c
+++ b/lib/ccdbg-io.c
@@ -21,18 +21,20 @@
 #include "cc-usb.h"
 #include "cc-bitbang.h"
 
-
 struct ccdbg *
 ccdbg_open(void)
 {
 	struct ccdbg *dbg;
+	char *tty;
 
 	dbg = calloc(sizeof (struct ccdbg), 1);
 	if (!dbg) {
 		perror("calloc");
 		return NULL;
 	}
-	dbg->usb = cc_usb_open();
+	tty = getenv("CCDBG_TTY");
+	if (!tty || tty[0] == '/')
+		dbg->usb = cc_usb_open(tty);
 	if (!dbg->usb) {
 		dbg->bb = cc_bitbang_open();
 		if (!dbg->bb) {