Convert arduino autonomous.pde to new TLC59116, single-TLC configuration

arduino/ledbar.h

@@ -0,0 +1,50 @@
+/* Generic ledbar library taking care of I2C Arduino communication
+ * with TLC59116. */
+
+#include <Wire.h>
+
+enum LedbarPinMode {
+	LPM_OFF,
+	LPM_ON,
+	LPM_PWM,
+	LPM_GRPPWM,
+};
+
+class Ledbar {
+	public:
+	void begin(unsigned char address); /* 7-bit TLC address */
+	/* pin is 0 .. 15 */
+	void setPinMode(int pin, enum LedbarPinMode pinMode);
+	void setPinPWM(int pin, unsigned char dutyCycle);
+	private:
+	unsigned char address;
+	unsigned char rawPinModes[4];
+} Ledbar;
+
+void Ledbar::begin(unsigned char address_)
+{
+	address = address_;
+	memset(&rawPinModes, 0, sizeof(rawPinModes));
+
+	Wire.begin();
+	Wire.beginTransmission(address);
+	Wire.write(0x00); // reg 0
+	Wire.write(0x01); // broadcast on, [5bit]=0 turns on oscillator
+	Wire.endTransmission();
+}
+
+void Ledbar::setPinMode(int pin, enum LedbarPinMode pinMode)
+{
+	Wire.beginTransmission(address);
+	rawPinModes[pin / 4] &= ~(0x3     << (pin % 4 * 2));
+	rawPinModes[pin / 4] |=  (pinMode << (pin % 4 * 2));
+	Wire.write(0x14 + pin / 4); Wire.write(rawPinModes[pin / 4]);
+	Wire.endTransmission();
+}
+
+void Ledbar::setPinPWM(int pin, unsigned char dutyCycle)
+{
+	Wire.beginTransmission(address);
+	Wire.write(0x2 + pin); Wire.write(dutyCycle);
+	Wire.endTransmission();
+}