This example shows how to learn what udcs are available
in system and also how to find out what gadgets are
enabled on them.
Signed-off-by: Krzysztof Opasiak <k.opasiak@xxxxxxxxxxx>
---
examples/Makefile.am | 3 ++-
examples/show-udcs.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 63 insertions(+), 1 deletion(-)
create mode 100644 examples/show-udcs.c
diff --git a/examples/Makefile.am b/examples/Makefile.am
index a77d890..d7a3b48 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -1,9 +1,10 @@
-bin_PROGRAMS = show-gadgets gadget-acm-ecm gadget-vid-pid-remove gadget-ffs gadget-export gadget-import
+bin_PROGRAMS = show-gadgets gadget-acm-ecm gadget-vid-pid-remove gadget-ffs gadget-export gadget-import show-udcs
gadget_acm_ecm_SOURCES = gadget-acm-ecm.c
show_gadgets_SOURCES = show-gadgets.c
gadget_vid_pid_remove_SOURCES = gadget-vid-pid-remove.c
gadget_ffs_SOURCES = gadget-ffs.c
gadget_export_SOURCE = gadget-export.c
gadget_import_SOURCE = gadget-import.c
+show_udcs_SOURCE = show-udcs.c
AM_CPPFLAGS=-I$(top_srcdir)/include/
AM_LDFLAGS=-L../src/ -lusbg
diff --git a/examples/show-udcs.c b/examples/show-udcs.c
new file mode 100644
index 0000000..66e950f
--- /dev/null
+++ b/examples/show-udcs.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2014 Samsung Electronics
+ *
+ * Krzysztof Opasiak <k.opasiak@xxxxxxxxxxx>
+ *
+ * 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.
+ */
+
+/**
+ * @file show-udcs.c
+ * @example show-udcs.c
+ * This is an example of how to learn about UDCs available in system
+ * and find out what gadget are enabled on them.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <usbg/usbg.h>
+
+int main(void)
+{
+ int usbg_ret;
+ int ret = -EINVAL;
+ usbg_state *s;
+ usbg_gadget *g;
+ usbg_udc *u;
+ const char *udc_name, *gadget_name;
+
+ usbg_ret = usbg_init("/sys/kernel/config", &s);
+ if (usbg_ret != USBG_SUCCESS) {
+ fprintf(stderr, "Error on USB state init\n");
+ fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
+ usbg_strerror(usbg_ret));
+ goto out;
+ }
+
+ usbg_for_each_udc(u, s) {
+ udc_name = usbg_get_udc_name(u);
+ g = usbg_get_udc_gadget(u);
+ if (g)
+ /* some gadget is enabled */
+ gadget_name = usbg_get_gadget_name(g);
+ else
+ gadget_name = "";
+
+ fprintf(stdout, "%s <-> %s\n", udc_name, gadget_name);
+ }
+
+ ret = 0;
+ usbg_cleanup(s);
+out:
+ return ret;
+}
--
1.7.9.5
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