Diff: main.cpp

Revision:

0:7403bd322eb6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Dec 06 08:52:08 2017 +0000
@@ -0,0 +1,51 @@
+#include "mbed.h"
+#include "TextLCD.h"
+
+PinName pin_CDS = PB_0;
+PinName pin_LEDR = PB_6;
+PinName pin_LEDG = PB_5;
+PinName pin_LEDB = PB_4;
+
+AnalogIn adc_CDS(pin_CDS);
+
+// rs, rw, e, d0-d3
+TextLCD lcd(PB_12, PB_13, PB_14, PB_15, PA_9, PA_10, PA_11); 
+
+PwmOut LEDR(pin_LEDR);
+PwmOut LEDG(pin_LEDG);
+PwmOut LEDB(pin_LEDB);
+
+float LED_Ctrl(int value);
+
+int main() {
+
+    int ADC_Data;
+    float Brightness;
+    LEDR = LED_Ctrl(0);
+    LEDG = LED_Ctrl(0);
+    LEDB = LED_Ctrl(0);
+
+    lcd.printf(" ADC Data :     \n");
+    lcd.printf(""); 
+    while(1) {
+        ADC_Data = adc_CDS.read()*4095;
+        lcd.locate(12, 0);
+        lcd.printf("%4d", ADC_Data);
+        if(ADC_Data > 3000)
+            ADC_Data = 3000;
+        ADC_Data /= 30;
+        Brightness = (100.0 - ADC_Data) / 100;
+        LEDR = Brightness;
+        LEDG = Brightness;
+        LEDB = Brightness;
+        wait(0.5);
+    }
+}
+
+// brightness Control 0 ~ 100(%)
+float LED_Ctrl(int value)
+{
+    float brightness = value;
+    brightness /= 100;
+    return brightness;
+}
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