b15f/main.cpp

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#include <avr/io.h>
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#include <avr/interrupt.h>
#include <util/delay.h>
#include "mcp23s17.h"
SPI spi;
MCP23S17 beba0(spi, SPIADR::BEBA0);
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int main() {
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spi.init();
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beba0.setDirA(0x00); // alle Ausgang
beba0.setDirB(0xFF); // alle Eingang
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while(1) {
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beba0.writePortA(beba0.readPortB());
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}
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return 0;
}