const int trigPin = 5; const int echoPin = 4; //const int ledPin = 7; int flag = 0; int brightness = 256; // how bright the LED is int fadeAmount = 4; // how many points to fade the LED by int led = 9; #define RTS_pin 2 // RTS line for C17A - DB9 pin 7 #define DTR_pin 3 // DTR line for C17A - DB9 pin 4 #define BIT_DELAY 1 // ms delay between bits (0.5ms min.) #define ON 0 // command for ON #define OFF 1 // command for OFF #define BRIGHT 2 // command for 20% brighten #define DIM 3 // command for 20% dim unsigned int houseCode[16] = { 0x6000, // A 0x7000, // B 0x4000, // C 0x5000, // D 0x8000, // E 0x9000, // F 0xA000, // G 0xB000, // H 0xE000, // I 0xF000, // J 0xC000, // K 0xD000, // L 0x0000, // M 0x1000, // N 0x2000, // O 0x3000, // P }; unsigned int deviceCode[16] = { 0x0000, // 1 0x0010, // 2 0x0008, // 3 0x0018, // 4 0x0040, // 5 0x0050, // 6 0x0048, // 7 0x0058, // 8 0x0400, // 9 0x0410, // 10 0x0408, // 11 0x0418, // 12 0x0440, // 13 0x0450, // 14 0x0448, // 15 0x0458, // 16 }; unsigned int cmndCode[] = { 0x0000, // ON 0x0020, // OFF 0x0088, // 20% BRIGHT (0x00A8=5%) 0x0098, // 20% DIM (0x00B8=5%) }; void setup() { // initialize serial communication: Serial.begin(9600); pinMode(RTS_pin,OUTPUT); // onboard LED pinMode(DTR_pin,OUTPUT); // output pin of touch sensor //pinMode(ledPin,OUTPUT); pinMode(led,OUTPUT); } void loop() { //delay(2000); //xmitCM17A('M',7,ON); //xmitCM17A('M',7,OFF); //xmitCM17A('M',7,ON); //xmitCM17A('M',7,DIM); //xmitCM17A('D',5,DIM); //xmitCM17A('D',5,DIM); //xmitCM17A('D',5,DIM); //xmitCM17A('D',5,DIM); //xmitCM17A('D',5,OFF); //xmitCM17A('D',4,ON); // establish variables for duration of the ping, // and the distance result in inches and centimeters: long duration, inches, cm; pinMode(trigPin, OUTPUT); digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); pinMode(echoPin, INPUT); duration = pulseIn(echoPin, HIGH); inches = microsecondsToInches(duration); cm = microsecondsToCentimeters(duration); if (cm < 10 && flag == 0) { brightness = 256; Serial.print(brightness); Serial.println(); xmitCM17A('M',7,ON); flag = 1; do { brightness = brightness - fadeAmount; analogWrite(led, brightness); Serial.print(brightness); Serial.println(); delay(40); } while(brightness > 0); } else { if (cm < 10 && flag == 1) { brightness = 256; Serial.print(brightness); Serial.println(); xmitCM17A('M',7,OFF); flag = 0; do { analogWrite(led, brightness); brightness = brightness - fadeAmount; Serial.print(brightness); Serial.println(); delay(40); } while(brightness > -1); } } delay(100); } long microsecondsToInches(long microseconds) { return microseconds / 74 / 2; } long microsecondsToCentimeters(long microseconds) { return microseconds / 29 / 2; } void xmitCM17A(char house, byte device, byte cmnd){ unsigned int dataBuff = 0; byte messageBuff[5]; if(cmnd == ON | cmnd == OFF){ dataBuff = (houseCode[house-'A'] | deviceCode[device-1] | cmndCode[cmnd]); } else dataBuff = houseCode[house-'A'] | cmndCode[cmnd]; // Build a string for the whole message . . . messageBuff[0] = 0xD5; // Header byte 0 11010101 = 0xD5 messageBuff[1] = 0xAA; // Header byte 1 10101010 = 0xAA messageBuff[2] = dataBuff >> 8; // MSB of dataBuff messageBuff[3] = dataBuff & 0xFF; // LSB of dataBuff messageBuff[4] = 0xAD; // Footer byte 10101101 = 0xAD // Now send it out to CM17A . . . digitalWrite(DTR_pin,LOW); // reset device - both low is power off digitalWrite(RTS_pin,LOW); delay(BIT_DELAY); digitalWrite(DTR_pin,HIGH); // standby mode - supply power digitalWrite(RTS_pin,HIGH); delay(35); // need extra time for it to settle for (byte i=0;i<5;i++){ for( byte mask = 0x80; mask; mask >>=1){ if( mask & messageBuff[i]) digitalWrite(DTR_pin,LOW); // 1 = RTS HIGH/DTR-LOW else digitalWrite(RTS_pin,LOW); // 0 = DTR-HIGH/RTS-LOW delay(BIT_DELAY); // delay between bits digitalWrite(DTR_pin,HIGH); // wait state between bits digitalWrite(RTS_pin,HIGH); delay(BIT_DELAY); } } delay(1000); // wait required before next xmit }