From 25c01719f17be8da73a859867c14df0fc29b5441 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Thu, 11 Apr 2013 22:16:03 -0700 Subject: [PATCH] libaltos: Retry Windows serial port open five times Maybe this helps? Signed-off-by: Keith Packard --- libaltos/libaltos.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/libaltos/libaltos.c b/libaltos/libaltos.c index 2a41ef80..ad03e638 100644 --- a/libaltos/libaltos.c +++ b/libaltos/libaltos.c @@ -1319,6 +1319,7 @@ altos_open(struct altos_device *device) struct altos_file *file = calloc (1, sizeof (struct altos_file)); char full_name[64]; COMMTIMEOUTS timeouts; + int i; if (!file) return NULL; @@ -1326,7 +1327,15 @@ altos_open(struct altos_device *device) strcpy(full_name, "\\\\.\\"); strcat(full_name, device->path); - file->handle = open_serial(full_name); + file->handle = INVALID_HANDLE_VALUE; + + for (i = 0; i < 5; i++) { + file->handle = open_serial(full_name); + if (file->handle != INVALID_HANDLE_VALUE) + break; + Sleep(100); + } + if (file->handle == INVALID_HANDLE_VALUE) { free(file); return NULL; -- 2.30.2