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add onlyPoolUp mode #110

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add onlyPoolUp mode #110

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10605f9
Update OneWire.h
AntonioPrevitali Mar 31, 2022
29b56c0
Update OneWire.h
AntonioPrevitali Mar 31, 2022
ac0425e
Update OneWire.cpp
AntonioPrevitali Mar 31, 2022
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19 changes: 17 additions & 2 deletions OneWire.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -205,18 +205,33 @@ void OneWire::write_bit(uint8_t v)
DIRECT_WRITE_LOW(reg, mask);
DIRECT_MODE_OUTPUT(reg, mask); // drive output low
delayMicroseconds(10);
DIRECT_WRITE_HIGH(reg, mask); // drive output high
if (onlyPoolUp)
{
DIRECT_MODE_INPUT(reg, mask); // onlyPoolUp resistor pool pin at high value.
}
else
{
DIRECT_WRITE_HIGH(reg, mask); // drive output high
}
interrupts();
delayMicroseconds(55);
} else {
noInterrupts();
DIRECT_WRITE_LOW(reg, mask);
DIRECT_MODE_OUTPUT(reg, mask); // drive output low
delayMicroseconds(65);
DIRECT_WRITE_HIGH(reg, mask); // drive output high
if (onlyPoolUp)
{
DIRECT_MODE_INPUT(reg, mask); // onlyPoolUp resistor pool pin at high value.
}
else
{
DIRECT_WRITE_HIGH(reg, mask); // drive output high
}
interrupts();
delayMicroseconds(5);
}

}

//
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5 changes: 3 additions & 2 deletions OneWire.h
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Original file line number Diff line number Diff line change
Expand Up @@ -69,8 +69,9 @@ class OneWire
#endif

public:
OneWire() { }
OneWire(uint8_t pin) { begin(pin); }
bool onlyPoolUp;
OneWire() { onlyPoolUp=false; }
OneWire(uint8_t pin) { onlyPoolUp=false; begin(pin); }
void begin(uint8_t pin);

// Perform a 1-Wire reset cycle. Returns 1 if a device responds
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