added LDR and PIR sensor

diff --git a/Desk_LED_dimmer/Desk_LED_dimmer.ino b/Desk_LED_dimmer/Desk_LED_dimmer.ino
index c90a39f..880048c 100644 (file)
--- a/Desk_LED_dimmer/Desk_LED_dimmer.ino
+++ b/Desk_LED_dimmer/Desk_LED_dimmer.ino
@@ -6,23 +6,39 @@
 const int led_pin = 13;
 const int buzzer_pin = 4;
 const int mosfet_pins[] = { 9, 10, 6 }; // PWM pins: 3,5,6,9,10,11
 const int led_pin = 13;
 const int buzzer_pin = 4;
 const int mosfet_pins[] = { 9, 10, 6 }; // PWM pins: 3,5,6,9,10,11

-int mosfet_pwm[] = { 0, 0, 0 }; // current state of mosfet pwm
+const int ldr_pin = A3; // LDR +5 -- A3 -[10K]- GND
+const int pir_pin = A2;
+
+#define TOUCHPAD 1 // set this to 0 if debugging without touchpad

 
 

+#if TOUCHPAD

 #include <ps2.h>
 PS2 mouse(8, 7); // PS2 synaptics clock, data
 #include <ps2.h>
 PS2 mouse(8, 7); // PS2 synaptics clock, data

+#endif
+
+int mosfet_pwm[] = { 0, 0, 0 }; // current state of mosfet pwm

 
 void setup() {
   Serial.begin(115200);
 
 void setup() {
   Serial.begin(115200);

+  Serial.println("setup");

 
   pinMode(led_pin, OUTPUT);
 
   pinMode(led_pin, OUTPUT);

+  digitalWrite(led_pin, HIGH); // signal reset
+

   pinMode(buzzer_pin, OUTPUT);
 
   pinMode(buzzer_pin, OUTPUT);
 

-  for(int i=0; i<sizeof(mosfet_pins); i++) pinMode(mosfet_pins[i], OUTPUT);
+  for(int i=0; i<=2; i++) pinMode(mosfet_pins[i], OUTPUT);

 
 

+  pinMode(ldr_pin, INPUT);
+  pinMode(pir_pin, INPUT);
+
+#if TOUCHPAD
+  Serial.println("Synaptics touchpad init");

 
   mouse.write(0xff);  // reset
   mouse.read();  // ack byte
   mouse.read();  // blank */
 
   mouse.write(0xff);  // reset
   mouse.read();  // ack byte
   mouse.read();  // blank */

+

   mouse.read();  // blank */
   mouse.write(0xf0);  // remote mode -- send motion data only on $EB (read data) command
   mouse.read();  // ack
   mouse.read();  // blank */
   mouse.write(0xf0);  // remote mode -- send motion data only on $EB (read data) command
   mouse.read();  // ack


@@ -49,9 +65,12 @@ void setup() {
   mouse.read();  // ack byte
   delayMicroseconds(100); 
 
   mouse.read();  // ack byte
   delayMicroseconds(100); 
 

+#endif

 
   Serial.println("Commands: b - beep, qwe/asd/zxc - MOSFETs");
 
 
   Serial.println("Commands: b - beep, qwe/asd/zxc - MOSFETs");
 

+  digitalWrite(led_pin, LOW);
+

 }
 
 void mosfet(int nr, int value) {
 }
 
 void mosfet(int nr, int value) {


@@ -79,9 +98,16 @@ void mosfet(int nr, int value) {
 unsigned int last_cx = 0;
 unsigned int last_cy = 0;         
 
 unsigned int last_cx = 0;
 unsigned int last_cy = 0;         
 

+int last_ldr = 0;
+// number of LDR reading to average
+#define LDR_SIZE 100
+static int ldr_sum = 0;
+static int ldr_count = 0;

 
 

+int last_pir = 0;

 void loop() {
 
 void loop() {
 

+#if TOUCHPAD

   byte mstat1;
   byte mstat2;
   byte mxy;
   byte mstat1;
   byte mstat2;
   byte mxy;


@@ -132,7 +158,8 @@ void loop() {
     }
     Serial.println();
   }
     }
     Serial.println();
   }

-  
+#endif
+

 
   if (Serial.available()) {
     digitalWrite(led_pin, HIGH);
 
   if (Serial.available()) {
     digitalWrite(led_pin, HIGH);


@@ -173,4 +200,28 @@ void loop() {
     }
     digitalWrite(led_pin, LOW);
   }
     }
     digitalWrite(led_pin, LOW);
   }

+
+  int ldr = analogRead(ldr_pin);
+  ldr_sum += ldr >> 2;
+  ldr_count++;
+  if ( ldr_count > LDR_SIZE ) {
+    ldr = ldr_sum / ldr_count;
+    ldr_count = 0;
+    ldr_sum = 0;
+
+    if ( abs(ldr - last_ldr) > 5 ) {  
+      Serial.print("LDR = ");
+      Serial.println(ldr);
+    }
+    last_ldr = ldr;
+  }
+
+
+  int pir = digitalRead(pir_pin);
+  if ( pir != last_pir) {
+    last_pir = pir;
+    Serial.print("PIR = ");
+    Serial.println(pir);
+  }
+

 }
 }