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97 lines
2.1 KiB
97 lines
2.1 KiB
11 months ago
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/*
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* Demonstrates how to use LCDisplay in conjunction with SoftRS485:
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*
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* The main _loop_ of this program listens on the RS485 bus.
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* Whenever a message is received from the bus, it is displayed on the LCD.
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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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