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97 lines
2.2 KiB
97 lines
2.2 KiB
/* |
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* Demonstrates how to use Read Buttons in conjunction with SoftRS485: |
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* |
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* If a button is pressed, a corresponding flag is set. |
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* The main loop checks for the state of those flags and |
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* sends a message on the RS485 bus whenever a flag is set. |
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*/ |
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// include the library code: |
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#include <SoftRS485.h> |
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#define PROGRAM "RS485-Nano 2.0 / Sender 1.0" |
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#define BTN_INT 2 // button interrupt pin |
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#define Max485_RO 3 // read-output of Max485 |
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#define Max485_RE 5 // not-read-enable of Max485 |
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#define Max485_DE 9 // data enable of Max485 |
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#define Max485_DI 8 // data input of Max485 |
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#define TRESHOLD 100000 // 100ms |
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#define ID 0 |
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// 0=Test |
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// 1=Arbeitszimmer |
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// 2=Küche |
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// 3=Bad |
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//#define LOG_TO_SERIAL |
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#define SEND_485 |
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boolean states[8]; |
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unsigned long times[8]; |
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void setup(){ |
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Serial.begin(115200); |
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init485(Max485_RO,Max485_RE,Max485_DE,Max485_DI); // library initialization: |
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pinMode(BTN_INT,INPUT_PULLUP); |
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pinMode(14,INPUT_PULLUP); |
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pinMode(15,INPUT_PULLUP); |
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pinMode(16,INPUT_PULLUP); |
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pinMode(17,INPUT_PULLUP); |
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pinMode(18,INPUT_PULLUP); |
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pinMode(19,INPUT_PULLUP); |
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pinMode(20,INPUT_PULLUP); |
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pinMode(21,INPUT_PULLUP); |
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attachInterrupt(digitalPinToInterrupt(2),isr,CHANGE); |
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// Print a message to the LCD. |
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Serial.println(PROGRAM); |
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#ifdef LOG_TO_SERIAL |
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Serial.println("14 15 16 17 18 19 20 21"); |
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#endif |
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} |
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void isr(){ |
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states[0] = !digitalRead(14); |
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states[1] = !digitalRead(15); |
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states[2] = !digitalRead(16); |
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states[3] = !digitalRead(17); |
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states[4] = !digitalRead(18); |
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states[5] = !digitalRead(19); |
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states[6] = !(analogRead(20)>200); |
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states[7] = !(analogRead(21)>200); |
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#ifdef LOG_TO_SERIAL |
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for (int i=0;i<8;i++){ |
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Serial.print(" "); Serial.print(states[i]); Serial.print(" "); |
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} |
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Serial.println(); |
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#endif |
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} |
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#ifdef SEND_485 |
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void send(int btn){ |
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String s = "{nano:"+String(ID)+",btn:"+String(btn)+"}"; |
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for (int i = 0; i<10; i++){ |
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if (send485(s.c_str())) break; |
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Serial.println("collision detected, trying again:"); |
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} |
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} |
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#endif |
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void loop(){ |
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unsigned long now = micros(); |
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for (int i=0;i<8;i++){ |
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if (states[i]){ |
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if (now - times[i] > TRESHOLD){ |
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#ifdef SEND_485 |
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send(i+1); |
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#endif |
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times[i] = now; |
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} |
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states[i] = 0; |
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} |
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} |
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}
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