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

diff -r 58b61681818f -r d87e11e8d012 DS1820.cpp
--- 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
     }
 }