Slawek Komarowski / 9_ETH_SD

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Dependencies:   LinkedList

Fork of DS1820 by Erik -

Files at this revision

API Documentation at this revision

Revision 9:d87e11e8d012, committed 2014-07-08

Comitter:
Sissors
Date:
Tue Jul 08 18:55:54 2014 +0000
Parent:
7:58b61681818f
Commit message:
Instead of open drain use CMOS output for writing. Not according to standard, but can help for long busses. And helps with parasite powered via data pin (no external mosfet)

Changed in this revision

DS1820.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/DS1820.cpp	Tue Apr 08 09:59:18 2014 +0000
+++ b/DS1820.cpp	Tue Jul 08 18:55:54 2014 +0000
@@ -51,11 +51,11 @@
     pin->write(0);
     wait_us(3);                 // DXP modified from 5
     if (bit_data) {
-        pin->input(); // bring data line high
+        pin->write(1); // bring data line high
         wait_us(55);
     } else {
         wait_us(55);            // keep data line low
-        pin->input();
+        pin->write(1);
         wait_us(10);            // DXP added to allow bus to float high before next bit_out
     }
 }