1 files changed, 60 insertions, 0 deletions
diff --git a/circuitpython/supervisor/shared/workflow.c b/circuitpython/supervisor/shared/workflow.c
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+++ b/circuitpython/supervisor/shared/workflow.c
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+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdbool.h>
+#include "py/mpconfig.h"
+#include "supervisor/workflow.h"
+#include "supervisor/shared/workflow.h"
+
+#if CIRCUITPY_USB
+#include "tusb.h"
+#endif
+
+void supervisor_workflow_reset(void) {
+}
+
+// Return true as soon as USB communication with host has started,
+// even before enumeration is done.
+// Not that some chips don't notice when USB is unplugged after first being plugged in,
+// so this is not perfect, but tud_suspended() check helps.
+bool supervisor_workflow_connecting(void) {
+    #if CIRCUITPY_USB
+    return tud_connected() && !tud_suspended();
+    #else
+    return false;
+    #endif
+}
+
+// Return true if host has completed connection to us (such as USB enumeration).
+bool supervisor_workflow_active(void) {
+    #if CIRCUITPY_USB
+    // Eventually there might be other non-USB workflows, such as BLE.
+    // tud_ready() checks for usb mounted and not suspended.
+    return tud_ready();
+    #else
+    return false;
+    #endif
+}