Milosch Meriac / rgb_sensor

Discrete RGB colour sensor using a colour LED flashing at high speed and a monochrome LDR (light dependent resistor) for detecting the colour via ADC conversion. The library implements interrupt driven ADC conversion at high speed (370 RGB readings per second, 128 times oversampling per channelfor noise reduction). The detection can optionally run in background.

Dependents:   rgb_sensor_buffer discrete_rgb_color_sensor_example

Diff: rgb_sensor.cpp

Revision:
2:4545984e62b6
Parent:
0:576e43bd193d
Child:
3:50e1ac3c56db
--- a/rgb_sensor.cpp	Wed Jun 25 14:59:12 2014 +0000
+++ b/rgb_sensor.cpp	Fri Jun 27 07:21:51 2014 +0000
@@ -55,9 +55,9 @@
     }
 
     /* disable LED's */
-    m_red   = 1;
-    m_green = 1;
-    m_blue  = 1;
+    m_red   = !RGB_LED_ON;
+    m_green = !RGB_LED_ON;
+    m_blue  = !RGB_LED_ON;
 
     // enable ADC power
     LPC_SC->PCONP |= (1<<12);
@@ -130,21 +130,21 @@
                 switch(m_rgb_channel)
                 {
                     case 1:
-                        m_red = 0;
+                        m_red = RGB_LED_ON;
                         break;
 
                     case 2:
-                        m_red = 1;
-                        m_green = 0;
+                        m_red = !RGB_LED_ON;
+                        m_green = RGB_LED_ON;
                         break;
 
                     case 3:
-                        m_green = 1;
-                        m_blue= 0;
+                        m_green = !RGB_LED_ON;
+                        m_blue= RGB_LED_ON;
                         break;
 
                     default:
-                        m_blue= 1;
+                        m_blue= !RGB_LED_ON;
                         m_done = true;
                         /* stop data aquisition */
                         LPC_ADC->ADCR &= ~(1UL<<16);