FIX: float16ToPayload

- all DPT9 numbers of the form (2^n)/100, n>10 (first value is 20.48) were converted to a payload of 0 - in other words: 20.48; 40.96; 81.92; etc. were send as 0!
thelsing · Aug 22, 2023 · 9c4e5d2 · 9c4e5d2
1 parent 6dda682
commit 9c4e5d2
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/knx/dptconvert.cpp b/src/knx/dptconvert.cpp
@@ -1749,8 +1749,8 @@ void float16ToPayload(uint8_t* payload, size_t payload_length, int index, double
     value *= 100.0;
     unsigned short exponent = 0;
 
-    if(value > 2048)
-        exponent = ceil(log2(value) - 11.0);
+    if(value >= 2048)
+        exponent = ceil(log2(value + 1.0) - 11.0);
 
     short mantissa = roundf(value / (1 << exponent));