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add pull up option to OneWire

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see #447
This commit is contained in:
Markus Sattler 2015-06-21 22:19:23 +02:00
parent 3d71bec59a
commit 8559c8bbb1
2 changed files with 7 additions and 3 deletions
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8
libraries/OneWire/OneWire.cpp
View File

@ -117,9 +117,13 @@ sample code bearing this copyright.
#include "OneWire.h" #include "OneWire.h"
OneWire::OneWire(uint8_t pin) OneWire::OneWire(uint8_t pin, bool pullup)
{ {
pinMode(pin, INPUT_PULLUP); if(pullup) {
pinMode(pin, INPUT_PULLUP);
} else {
pinMode(pin, INPUT);
}
bitmask = PIN_TO_BITMASK(pin); bitmask = PIN_TO_BITMASK(pin);
baseReg = PIN_TO_BASEREG(pin); baseReg = PIN_TO_BASEREG(pin);
#if ONEWIRE_SEARCH #if ONEWIRE_SEARCH

2
libraries/OneWire/OneWire.h
View File

@ -135,7 +135,7 @@ class OneWire
#endif #endif
public: public:
OneWire( uint8_t pin); OneWire(uint8_t pin, bool pullup = true);
// Perform a 1-Wire reset cycle. Returns 1 if a device responds // Perform a 1-Wire reset cycle. Returns 1 if a device responds
// with a presence pulse. Returns 0 if there is no device or the // with a presence pulse. Returns 0 if there is no device or the