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-rw-r--r--drivers/ws2812.h40
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diff --git a/drivers/ws2812.h b/drivers/ws2812.h
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+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "quantum/color.h"
+
+/*
+ * Older WS2812s can handle a reset time (TRST) of 50us, but recent
+ * component revisions require a minimum of 280us.
+ */
+
+#if !defined(WS2812_TRST_US)
+#define WS2812_TRST_US 280
+#endif
+
+/* User Interface
+ *
+ * Input:
+ * ledarray: An array of GRB data describing the LED colors
+ * number_of_leds: The number of LEDs to write
+ *
+ * The functions will perform the following actions:
+ * - Set the data-out pin as output
+ * - Send out the LED data
+ * - Wait 50us to reset the LEDs
+ */
+void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds);