some more documentation

2020-08-14 19:55:40 +02:00
parent bc707b9235
commit 89d855627d
1 changed files with 2 additions and 0 deletions
--- a/main.c
+++ b/main.c
@ -36,6 +36,8 @@
 #define COMM_ENABLE_BIT BIT4
 #define COMM_RESULT_BIT BIT2

+// derived from the calculation in mbus-converter.ods
+// assumes a 25Ohm shunt resistor and a 10mA swing
 #define SPACE_MARK_THRESHOLD 100