added brightness control

Adafruit_TLC59711.cpp

@@ -33,7 +33,7 @@ Adafruit_TLC59711::Adafruit_TLC59711(uint8_t n, uint8_t c, uint8_t d) {
   _clk = c;
   _dat = d;
 
-  BCr = BCg = BCb = 0x7F;
+  BCr = BCg = BCb = 0x7F; // default 100% brigthness
 
   pwmbuffer = (uint16_t *)calloc(2, 12 * n);
 }
@@ -51,7 +51,7 @@ Adafruit_TLC59711::Adafruit_TLC59711(uint8_t n, SPIClass *theSPI) {
   _dat = -1;
   _spi = theSPI;
 
-  BCr = BCg = BCb = 0x7F;
+  BCr = BCg = BCb = 0x7F; // default 100% brigthness
 
   pwmbuffer = (uint16_t *)calloc(2, 12 * n);
 }
@@ -157,6 +157,56 @@ void Adafruit_TLC59711::setLED(uint8_t lednum, uint16_t r, uint16_t g,
   setPWM(lednum * 3 + 2, b);
 }
 
+/*!
+ *  @brief  Set the brightness of LED channels to same value
+ *  @param  BC
+ *          Brightness Control value
+ */
+void Adafruit_TLC59711::simpleSetBrightness(uint8_t BC) {
+  if (BC > 127) {
+    BC = 127; // maximum possible value since BC can only be 7 bit
+  } else if (BC < 0) {
+    BC = 0;
+  }
+
+  BCr = BCg = BCb = BC;
+}
+
+/*!
+ *  @brief  Set the brightness of LED channels to specific value
+ *  @param  bcr
+ *          Brightness Control Red value
+ *  @param  bcg
+ *          Brightness Control Green value
+ *  @param  bcb
+ *          Brightness Control Blue value
+ */
+void Adafruit_TLC59711::setBrightness(uint8_t bcr, uint8_t bcg, uint8_t bcb) {
+  if (bcr > 127) {
+    bcr = 127; // maximum possible value since BC can only be 7 bit
+  } else if (bcr < 0) {
+    bcr = 0;
+  }
+
+  BCr = bcr;
+
+  if (bcg > 127) {
+    bcg = 127; // maximum possible value since BC can only be 7 bit
+  } else if (bcg < 0) {
+    bcg = 0;
+  }
+
+  BCg = bcg;
+
+  if (bcb > 127) {
+    bcb = 127; // maximum possible value since BC can only be 7 bit
+  } else if (bcb < 0) {
+    bcb = 0;
+  }
+
+  BCb = bcb;
+}
+
 /*!
  *  @brief  Begins SPI connection if there is not empty PWM buffer
  *  @return If successful returns true, otherwise false

Adafruit_TLC59711.h

@@ -30,7 +30,7 @@
  *          TLC59711 Senor
  */
 class Adafruit_TLC59711 {
- public:
+public:
   Adafruit_TLC59711(uint8_t n, uint8_t c, uint8_t d);
   Adafruit_TLC59711(uint8_t n, SPIClass *theSPI = &SPI);
 
@@ -40,15 +40,15 @@ class Adafruit_TLC59711 {
   void setLED(uint8_t lednum, uint16_t r, uint16_t g, uint16_t b);
   void write();
   void spiwriteMSB(uint8_t d);
+  void setBrightness(uint8_t bcr, uint8_t bcg, uint8_t bcb);
+  void simpleSetBrightness(uint8_t BC);
 
- private:
+private:
   uint16_t *pwmbuffer;
 
   uint8_t BCr, BCg, BCb;
   int8_t numdrivers, _clk, _dat;
   SPIClass *_spi;
-
 };
 
-
 #endif

examples/tlc59711test/tlc59711test.ino

@@ -44,7 +44,7 @@ void loop() {
   colorWipe(0, 0, 65535, 100); // "Blue" (depending on your LED wiring)
   delay(200);
 
-  rainbowCycle(5);
+  increaseBrightness();
 }
 
 
@@ -83,3 +83,16 @@ void Wheel(uint8_t ledn, uint16_t WheelPos) {
     tlc.setLED(ledn, 0, 3*WheelPos, 65535 - 3*WheelPos);
   }
 }
+
+//All RGB Channels on full colour
+//Cycles trough all brightness settings from 0 up to 127
+void increaseBrightness(){
+  for(uint16_t i=0; i<8*NUM_TLC59711; i++) {
+      tlc.setLED(i, 65535, 65535, 65535);
+  }
+  for(int i = 0; i < 128; i++){
+    tlc.simpleSetBrightness(i);
+    tlc.write();
+    delay(1000);
+  }
+}