Add frontlight logic

Author: JosipKuci

src/features/frontlight/Frontlight.cpp

@@ -0,0 +1,71 @@
+/**
+ **************************************************
+ * @file        Frontlight.cpp
+ * @brief       Basic funtions for controling inkplate frontlight
+ *
+ *              https://github.com/e-radionicacom/Inkplate-Arduino-library
+ *              For support, please reach over forums: forum.e-radionica.com/en
+ *              For more info about the product, please check: www.inkplate.io
+ *
+ *              This code is released under the GNU Lesser General Public
+ *License v3.0: https://www.gnu.org/licenses/lgpl-3.0.en.html Please review the
+ *LICENSE file included with this example. If you have any questions about
+ *licensing, please contact [email protected] Distributed as-is; no
+ *warranty is given.
+ *
+ * @authors     Soldered
+ ***************************************************/
+
+#include "Frontlight.h"
+#include "Inkplate.h"
+
+#if defined(ARDUINO_INKPLATE6PLUS) || defined(ARDUINO_INKPLATE6PLUSV2) || defined(ARDUINO_INKPLATE4TEMPERA) ||         \
+    defined(ARDUINO_INKPLATE6FLICK)
+
+/**
+ * @brief       setFrontlight function sets frontlight intensity for inkplate
+ *
+ * @param       uint8_t _v
+ *              value to set frontlight to
+ *
+ * @note        can only be used in inkplate 6PLUS and 4TEMPERA, others don't suport
+ * frontlight
+ */
+void Frontlight::setBrightness(uint8_t _v)
+{
+    Wire.beginTransmission(0x2E);
+    Wire.write(0);
+    Wire.write(63 - (_v & 0b00111111));
+    Wire.endTransmission();
+}
+
+/**
+ * @brief       setState function turns frontlight on/off
+ *
+ * @param       bool _e
+ *              enable value, 1 turns on, 0 off
+ */
+void Frontlight::setState(bool _e)
+{
+    if (_e)
+    {
+        _inkplate->internalIO.digitalWrite(FRONTLIGHT_EN, HIGH);
+    }
+    else
+    {
+        _inkplate->internalIO.digitalWrite(FRONTLIGHT_EN, LOW);
+    }
+}
+
+/**
+ * @brief       begin function forwards the current inkplate instance to be used inside the class
+ *
+ * @param       Inkplate* inkplatePtr
+ *              pointer to the instance of the current Inkplate display object
+ */
+void Frontlight::begin(Inkplate* inkplatePtr)
+{
+    _inkplate = inkplatePtr;
+}
+
+#endif