Zoltan Hudak / OneWire

Dallas' 1-Wire bus protocol library

Dependents:   DS1825 DISCO-F746-Dessiccateur-V1 watersenor_and_temp_code DS1820 ... more

Diff: OneWire.cpp

Revision:
7:acf3f0ee66d2
Parent:
6:d6e084297fb9
Child:
8:87fbdaba5535
--- a/OneWire.cpp	Sun Jan 20 10:10:20 2019 +0000
+++ b/OneWire.cpp	Sun Jan 20 19:52:50 2019 +0000
@@ -118,7 +118,10 @@
 
 OneWire::OneWire(PinName pin):
     wire(pin)
-{   
+{
+    wire.mode(PullUp);
+    timer.stop();
+    timer.reset();
 #if ONEWIRE_SEARCH
     reset_search();
 #endif
@@ -182,12 +185,15 @@
 uint8_t OneWire::read_bit(void)
 {
     uint8_t r;
+    int     t;
 
     wire.output();
     wire = 0;
     timer.start();
     wire.input();
-    wait_us(12 - timer.read_us());
+    t = timer.read_us();
+    if (t < 10)
+        wait_us(10 - t);
     r = wire.read();
     timer.stop();
     timer.reset();