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pc-stlinkv2: Wait for device attach.

This commit is contained in:
Uwe Bonnes 2019-08-31 12:32:23 +02:00
parent 86d0be9708
commit 6f1cae9203
1 changed files with 60 additions and 7 deletions
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67
src/platforms/pc-stlinkv2/stlinkv2.c
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@ -245,6 +245,19 @@ struct trans_ctx {
};
int debug_level = 0;
bool has_attached = false;
static int LIBUSB_CALL hotplug_callback_attach(
libusb_context *ctx, libusb_device *dev, libusb_hotplug_event event,
void *user_data)
{
(void)ctx;
(void)dev;
(void)event;
(void)user_data;
has_attached = true;
return 0;
}
static void LIBUSB_CALL on_trans_done(struct libusb_transfer * trans)
{
@ -645,6 +658,7 @@ void stlink_help(char **argv)
DEBUG("\t-v[1|2]\t\t: Increasing verbosity\n");
DEBUG("\t-s \"string\"\t: Use Stlink with (partial) "
"serial number \"string\"\n");
DEBUG("\t-n\t\t: Exit immediate if no device found\n");
DEBUG("\t-h\t\t: This help.\n");
exit(0);
}
@ -659,8 +673,12 @@ void stlink_init(int argc, char **argv)
libusb_init(&Stlink.libusb_ctx);
char *serial = NULL;
int c;
while((c = getopt(argc, argv, "s:v:h")) != -1) {
bool wait_for_attach = true;
while((c = getopt(argc, argv, "ns:v:h")) != -1) {
switch(c) {
case 'n':
wait_for_attach = false;
break;
case 's':
serial = optarg;
break;
@ -676,9 +694,17 @@ void stlink_init(int argc, char **argv)
r = libusb_init(NULL);
if (r < 0)
DEBUG("Failed: %s", libusb_strerror(r));
ssize_t cnt = libusb_get_device_list(NULL, &devs);
bool hotplug = true;
if (!libusb_has_capability (LIBUSB_CAP_HAS_HOTPLUG)) {
printf("Hotplug capabilites are not supported on this platform\n");
hotplug = false;
}
ssize_t cnt;
rescan:
has_attached = 0;
memset(&Stlink, 0, sizeof(Stlink));
cnt = libusb_get_device_list(NULL, &devs);
if (cnt < 0) {
libusb_exit(NULL);
DEBUG("Failed: %s", libusb_strerror(r));
goto error;
}
@ -769,13 +795,40 @@ void stlink_init(int argc, char **argv)
}
}
}
libusb_free_device_list(devs, 1);
if (!Stlink.handle) {
if (nr_stlinks && serial)
if (nr_stlinks && serial) {
DEBUG("No Stlink with given serial number %s\n", serial);
else if (nr_stlinks > 1)
} else if (nr_stlinks > 1) {
DEBUG("Multiple Stlinks. Please specify serial number\n");
else
goto error;
} else {
DEBUG("No Stlink device found!\n");
}
if (hotplug && wait_for_attach) {
libusb_hotplug_callback_handle hp;
int rc = libusb_hotplug_register_callback
(NULL, LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED, 0,
VENDOR_ID_STLINK, LIBUSB_HOTPLUG_MATCH_ANY,
LIBUSB_HOTPLUG_MATCH_ANY,
hotplug_callback_attach, NULL, &hp);
if (LIBUSB_SUCCESS != rc) {
DEBUG("Error registering attach callback\n");
goto error;
}
DEBUG("Waiting for %sST device%s%s to attach\n",
(serial)? "" : "some ",
(serial)? " with serial ": "",
(serial)? serial: "");
DEBUG("Terminate with ^C\n");
while (has_attached == 0) {
rc = libusb_handle_events (NULL);
if (rc < 0)
printf("libusb_handle_events() failed: %s\n",
libusb_error_name(rc));
}
goto rescan;
}
goto error;
}
int config;
@ -829,7 +882,7 @@ void stlink_init(int argc, char **argv)
error_1:
libusb_close(Stlink.handle);
error:
libusb_free_device_list(devs, 1);
libusb_exit(Stlink.libusb_ctx);
exit(-1);
}