1 files changed, 83 insertions, 0 deletions
diff --git a/circuitpython/supervisor/shared/micropython.c b/circuitpython/supervisor/shared/micropython.c
new file mode 100644
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+++ b/circuitpython/supervisor/shared/micropython.c
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+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 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 <string.h>
+
+#include "supervisor/serial.h"
+#include "lib/oofatfs/ff.h"
+#include "py/mpconfig.h"
+#include "py/mphal.h"
+#include "py/mpstate.h"
+#include "py/runtime.h"
+#include "py/stream.h"
+
+#include "supervisor/shared/status_leds.h"
+
+#if CIRCUITPY_WATCHDOG
+#include "shared-bindings/watchdog/__init__.h"
+#define WATCHDOG_EXCEPTION_CHECK() (MP_STATE_VM(mp_pending_exception) == &mp_watchdog_timeout_exception)
+#else
+#define WATCHDOG_EXCEPTION_CHECK() 0
+#endif
+
+int mp_hal_stdin_rx_chr(void) {
+    for (;;) {
+        #ifdef MICROPY_VM_HOOK_LOOP
+        MICROPY_VM_HOOK_LOOP
+        #endif
+        mp_handle_pending(true);
+        if (serial_bytes_available()) {
+            toggle_rx_led();
+            return serial_read();
+        }
+    }
+}
+
+void mp_hal_stdout_tx_strn(const char *str, size_t len) {
+    toggle_tx_led();
+
+    #ifdef CIRCUITPY_BOOT_OUTPUT_FILE
+    if (boot_output != NULL) {
+        // Ensure boot_out.txt is capped at 1 filesystem block and ends with a newline
+        if (len + boot_output->len > 508) {
+            vstr_add_str(boot_output, "...\n");
+            boot_output = NULL;
+        } else {
+            vstr_add_strn(boot_output, str, len);
+        }
+    }
+    #endif
+
+    serial_write_substring(str, len);
+}
+
+uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
+    uintptr_t ret = 0;
+    if ((poll_flags & MP_STREAM_POLL_RD) && serial_bytes_available()) {
+        ret |= MP_STREAM_POLL_RD;
+    }
+    return ret;
+}