AP_SerialLED: added library API to access WS2812 LEDs

used by Lua scripting

libraries/AP_SerialLED/AP_SerialLED.cpp

@@ -0,0 +1,48 @@
+/*
+   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/>.
+ */
+/*
+  AP_SerialLED for controlling serial connected LEDs using WS2812B protocol
+ */
+
+#include "AP_SerialLED.h"
+#include <AP_Math/AP_Math.h>
+
+extern const AP_HAL::HAL& hal;
+
+AP_SerialLED AP_SerialLED::singleton;
+
+AP_SerialLED::AP_SerialLED()
+{
+}
+
+// set number of LEDs per pin
+bool AP_SerialLED::set_num_LEDs(uint8_t chan, uint8_t num_leds)
+{
+    return hal.rcout->set_neopixel_num_LEDs(chan-1, num_leds);
+}
+
+// set RGB value on mask of LEDs. chan is PWM output, 1..16
+void AP_SerialLED::set_RGB(uint8_t chan, uint32_t ledmask, uint8_t red, uint8_t green, uint8_t blue)
+{
+    if (chan >= 1 && chan <= 16) {
+        hal.rcout->set_neopixel_rgb_data(chan-1, ledmask, red, green, blue);
+    }
+}
+
+// trigger sending of LED changes to LEDs
+void AP_SerialLED::send(void)
+{
+    hal.rcout->neopixel_send();
+}

libraries/AP_SerialLED/AP_SerialLED.h

@@ -0,0 +1,42 @@
+/*
+   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/>.
+ */
+/*
+  AP_SerialLED for controlling serial connected LEDs using WS2812B protocol
+ */
+#pragma once
+
+#include <AP_HAL/AP_HAL.h>
+
+class AP_SerialLED {
+public:
+    AP_SerialLED();
+
+    // set number of LEDs per pin
+    bool set_num_LEDs(uint8_t chan, uint8_t num_leds);
+
+    // set RGB value on mask of LEDs. chan is PWM output, 1..16
+    void set_RGB(uint8_t chan, uint32_t ledmask, uint8_t red, uint8_t green, uint8_t blue);
+
+    // trigger sending of LED changes to LEDs
+    void send(void);
+
+    // singleton support
+    static AP_SerialLED *get_singleton(void) {
+        return &singleton;
+    }
+
+private:
+    static AP_SerialLED singleton;
+};