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81 lines
1.1 KiB
C++
81 lines
1.1 KiB
C++
//
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// FILE: PCF8575_test.ino
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// AUTHOR: Rob Tillaart
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// DATE: 2020-07-20
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// PUPROSE: test PCF8575 library
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// URL: https://github.com/RobTillaart/PCF8575
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#include "PCF8575.h"
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PCF8575 PCF(0x38);
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void setup()
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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.print("PCF8575_test version: ");
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Serial.println(PCF8575_LIB_VERSION);
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PCF.begin();
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uint16_t x = PCF.read16();
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Serial.print("Read ");
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printHex(x);
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delay(1000);
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}
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void loop()
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{
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Serial.println("HLT");
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while (Serial.available() == 0);
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switch(Serial.read())
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{
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case 'H': doHigh(); break;
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case 'L': doLow(); break;
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case 'T': doToggle(); break;
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}
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}
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void doHigh()
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{
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PCF.write(4, HIGH);
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int x = PCF.read16();
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Serial.print("Read ");
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printHex(x);
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}
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void doLow()
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{
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PCF.write(4, LOW);
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int x = PCF.read16();
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Serial.print("Read ");
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printHex(x);
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}
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void doToggle()
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{
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PCF.toggle(4);
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int x = PCF.read16();
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Serial.print("Read ");
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printHex(x);
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}
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void printHex(uint16_t x)
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{
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if (x < 0x1000) Serial.print('0');
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if (x < 0x100) Serial.print('0');
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if (x < 0x10) Serial.print('0');
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Serial.println(x, HEX);
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}
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// -- END OF FILE --
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