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
+
+int LDR_SIZE = 1; // 1 number of LDR reading to average
+int LDR_NOISE = 6; // 6 calibrate LDR noise level
+
+#define PIR_TIMEOUT 10 // s
+
+#if TOUCHPAD
#include <ps2.h>
PS2 mouse(8, 7); // PS2 synaptics clock, data
+#endif
+#define TP_LANDSCAPE 0
+
+
+int mosfet_pwm[] = { 64, 64, 64 }; // initial and current state of mosfet pwm
+
+void MOSFET_PWM(int i, int pwm) {
+ analogWrite(mosfet_pins[i], pwm);
+ Serial.print("MOSFET=");
+ Serial.print(i);
+ Serial.print(":");
+ Serial.println(pwm);
+}
+
void setup() {
Serial.begin(115200);
+ Serial.println("setup");
pinMode(led_pin, OUTPUT);
+ digitalWrite(led_pin, HIGH); // signal reset
+
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);
+ analogWrite(mosfet_pins[i], 0);
+ }
+
+ 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.read(); // blank */
mouse.write(0xf0); // remote mode -- send motion data only on $EB (read data) command
mouse.read(); // ack
mouse.read(); // ack byte
delayMicroseconds(100);
+#endif
- Serial.println("Commands: b - beep, qwe/asd/zxc - MOSFETs");
+ Serial.print("Commands: b - beep, qwe/asd/zxc - MOSFETs\nLDR = ");
+ int ldr = analogRead(ldr_pin);
+ Serial.println(ldr);
+
+ for(int i=0; i<=2; i++) {
+ analogWrite(mosfet_pins[i], 16);
+ delay(100);
+ int ldr = analogRead(ldr_pin);
+ Serial.print(ldr);
+ analogWrite(mosfet_pins[i], 0);
+ }
+
+ digitalWrite(led_pin, LOW);
}
int sleep = 1000 / abs(pwm - value);
int step = pwm < value ? 1 : -1;
for(int i=pwm; i != value; i += step) {
- analogWrite(mosfet_pins[nr], i);
- Serial.println(i);
+ MOSFET_PWM(nr, i);
delay(sleep);
}
- analogWrite(mosfet_pins[nr], value);
+ MOSFET_PWM(nr, value);
mosfet_pwm[nr] = value;
}
unsigned int last_cx = 0;
unsigned int last_cy = 0;
+int last_ldr = 0;
+static int ldr_sum = 0;
+static int ldr_count = 0;
+
+int last_pir = 0;
+long int pir_millis = millis();
+
void loop() {
+#if TOUCHPAD
byte mstat1;
byte mstat2;
byte mxy;
Serial.print("\tZ=");
Serial.print(mz, DEC);
if ( cx > 1100 && cy > 800 ) {
+#if TP_LANDSCAPE
int nr = ( cx - 1100 ) / (( 5800 - 1100 ) / 3);
int pwm = ( cy - 800 ) / (( 5000 - 800 ) / 255);
+#else
+ int pwm = ( cx - 1100 ) / (( 5800 - 1100 ) / 255);
+ int nr = ( cy - 800 ) / (( 5000 - 800 ) / 4);
+ if ( nr > 2 ) nr -= 1; // 0 [ 1 2 ] 3 -> 0 1 2
+#endif
pwm -= 1; // allow off
Serial.print("\tmosfet = ");
Serial.print(nr);
Serial.print("\tpwm = ");
Serial.print(pwm);
if ( nr >= 0 && nr <= 2 && pwm >= 0 && pwm <= 255 ) {
- analogWrite(mosfet_pins[nr], pwm);
- Serial.print("\tOK");
+ Serial.println("\tOK");
+ MOSFET_PWM(nr, pwm);
+ mosfet_pwm[nr] = pwm;
} else {
- Serial.print("\tIGNORED");
+ Serial.println("\tIGNORED");
}
}
- Serial.println();
}
-
+#endif
+
if (Serial.available()) {
digitalWrite(led_pin, HIGH);
}
digitalWrite(led_pin, LOW);
}
+
+ int ldr = analogRead(ldr_pin);
+ ldr_sum += ldr;
+ ldr_count++;
+ if ( ldr_count > LDR_SIZE ) {
+ ldr = ldr_sum / ldr_count;
+ ldr_count = 0;
+ ldr_sum = 0;
+
+ if ( abs(ldr-last_ldr) > LDR_NOISE ) {
+ Serial.print("LDR = ");
+ Serial.println(ldr);
+ last_ldr = ( last_ldr + ldr ) / 2;
+ }
+ }
+
+
+ int pir = digitalRead(pir_pin);
+ if ( pir != last_pir) {
+ last_pir = pir;
+ Serial.print("PIR = ");
+ Serial.println(pir);
+ }
+
+ long int ms = millis();
+ if ( pir == 0 ) {
+ if (pir_millis > 0 && ms - pir_millis > PIR_TIMEOUT * 1000 ) {
+ Serial.println("PIR timeout, fade-out");
+ pir_millis = -1; // mark that we are in timeout
+ for(int i=0; i<=2; i++) {
+ MOSFET_PWM(i, 0);
+ }
+ }
+ } else {
+ if (pir_millis < 0) {
+ Serial.println("PIR fade-in after timeout");
+ for(int i=0; i<=2; i++) {
+ MOSFET_PWM(i, mosfet_pwm[i]);
+ }
+ }
+ pir_millis = ms;
+ }
+
}