simplified message handling, switch from XOR checksum to CRC8 with polynomial 0x97.

0x97 allows for detection of all 1-3 bit errors in a message of up to 119 bytes (see https://www.faa.gov/aircraft/air_cert/design_approvals/air_software/media/TC-14-49.pdf)
2023-04-07 23:22:40 +02:00
parent 4e1f08b567
commit 7eb462173c
33 changed files with 281 additions and 367 deletions
--- a/avr/MESSAGES
+++ b/avr/MESSAGES
@@ -198,6 +198,7 @@ Offset Length Meaning
     8      2 packets out
    10      2 collisions
    12      2 aborted
+    14      2 no buffer errors



@@ -215,5 +216,9 @@ Offset Length Meaning
     8      2 packets in
    10      2 crc errors
    12      2 io errors
+    14      2 no buffer errors
+    16      2 handled packets
+    18      2 missed
+