2 files changed, 112 insertions, 0 deletions
diff --git a/shared-bindings/neopixel_write/__init__.c b/shared-bindings/neopixel_write/__init__.c
new file mode 100644
index 000000000..73fd803c5
--- /dev/null
+++ b/shared-bindings/neopixel_write/__init__.c
@@ -0,0 +1,75 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 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 "py/obj.h"
+#include "py/mphal.h"
+#include "py/runtime.h"
+
+#include "common-hal/nativeio/types.h"
+
+#include "shared-bindings/neopixel_write/__init__.h"
+
+//| :mod:`neopixel_write` --- Low-level neopixel implementation
+//| ===========================================================
+//|
+//| .. module:: neopixel_write
+//|   :synopsis: Low-level neopixel implementation
+//|   :platform: SAMD21
+//|
+//| The `neopixel_write` module contains a helper method to write out bytes in
+//| the neopixel protocol.
+
+//| .. method:: neopixel_write.neopixel_write(digitalinout, buf, is800KHz)
+//|
+//|   Write buf out on the given DigitalInOut.
+//|
+//|   :param ~nativeio.DigitalInOut gpio: the DigitalInOut to output with
+//|   :param bytearray buf: The bytes to clock out. No assumption is made about color order
+//|   :param bool is800KHz: True if the pixels are 800KHz, otherwise 400KHz is assumed.
+//|
+STATIC mp_obj_t neopixel_write_neopixel_write_(mp_obj_t digitalinout_obj, mp_obj_t buf, mp_obj_t is800k) {
+    // Convert parameters into expected types.
+    const nativeio_digitalinout_obj_t *digitalinout = MP_OBJ_TO_PTR(digitalinout_obj);
+    mp_buffer_info_t bufinfo;
+    mp_get_buffer_raise(buf, &bufinfo, MP_BUFFER_READ);
+    // Call platform's neopixel write function with provided buffer and options.
+    common_hal_neopixel_write(digitalinout, (uint8_t*)bufinfo.buf, bufinfo.len,
+        mp_obj_is_true(is800k));
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_3(neopixel_write_neopixel_write_obj, neopixel_write_neopixel_write_);
+
+STATIC const mp_rom_map_elem_t neopixel_write_module_globals_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_neopixel_write) },
+    { MP_OBJ_NEW_QSTR(MP_QSTR_neopixel_write), (mp_obj_t)&neopixel_write_neopixel_write_obj },
+};
+
+STATIC MP_DEFINE_CONST_DICT(neopixel_write_module_globals, neopixel_write_module_globals_table);
+
+const mp_obj_module_t neopixel_write_module = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t*)&neopixel_write_module_globals,
+};
diff --git a/shared-bindings/neopixel_write/__init__.h b/shared-bindings/neopixel_write/__init__.h
new file mode 100644
index 000000000..fdf3c38f6
--- /dev/null
+++ b/shared-bindings/neopixel_write/__init__.h
@@ -0,0 +1,37 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 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.
+ */
+
+#ifndef SAMD_NEOPIXEL_WRITE_H
+#define SAMD_NEOPIXEL_WRITE_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "common-hal/nativeio/types.h"
+
+extern void common_hal_neopixel_write(const nativeio_digitalinout_obj_t* gpio, uint8_t *pixels, uint32_t numBytes, bool is800KHz);
+
+#endif