Michael Wesemann
38 lines
1.1 KiB
Arduino
38 lines
1.1 KiB
Arduino
// ==================================================== interlock, second arduino, returns only inputs over wire
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#include <Wire.h>
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#define IMIN 22
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#define IMAX 46
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int byte_return_arr[4];
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void setup() { // ---------------------------------------------------------------------------------------- setup
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Wire.begin(0x55);
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Wire.onReceive(calculate_bytes);
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Wire.onRequest(send_bytes);
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for (int pinnr = IMIN; pinnr <= IMAX; pinnr++){
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pinMode(pinnr, INPUT_PULLUP);
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}
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Serial.begin(9600);
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}
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void calculate_bytes(int numBytes) { // ------------------------------------------ command from controller event
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while (Wire.available()) Wire.read();
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for (int i = 0; i < 4; i++) byte_return_arr[i] = 0;
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for (int j=IMIN;j<=IMAX;j++) byte_return_arr[(j-IMIN)/8]+=(!digitalRead(j)*1<<((j-IMIN)%8));
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}
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void send_bytes(){
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for (int i = 0; i < 4; i++){
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Wire.write(byte_return_arr[i]);
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}
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}
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void loop() { // ------------------------------------------------------------------------------------------ loop
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}
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// ========================================================================================================= END
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