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Diffstat (limited to 'tmk_core/protocol/usb_util.c')
-rw-r--r--tmk_core/protocol/usb_util.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/tmk_core/protocol/usb_util.c b/tmk_core/protocol/usb_util.c
new file mode 100644
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+++ b/tmk_core/protocol/usb_util.c
@@ -0,0 +1,29 @@
+/* Copyright 2021 QMK
+ *
+ * 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 3 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "quantum.h"
+#include "usb_util.h"
+
+__attribute__((weak)) void usb_disconnect(void) {}
+__attribute__((weak)) bool usb_connected_state(void) { return true; }
+__attribute__((weak)) bool usb_vbus_state(void) {
+#ifdef USB_VBUS_PIN
+ setPinInput(USB_VBUS_PIN);
+ wait_us(5);
+ return readPin(USB_VBUS_PIN);
+#else
+ return true;
+#endif
+}