@ -13,12 +13,22 @@ class TinyFrame:
# If the connection is reliable, you can disable the SOF byte and checksums.
# That can save up to 9 bytes of overhead.
# ,-----+----+-----+------+------------+- - - -+------------,
# | SOF | ID | LEN | TYPE | HEAD_CKSUM | DATA | PLD_CKSUM |
# | 1 | ? | ? | ? | ? | ... | ? | <- size (bytes)
# '-----+----+-----+------+------------+- - - -+------------'
# ,-----+-----+-----+------+------------+- - - -+-------------,
# | SOF | ID | LEN | TYPE | HEAD_CKSUM | DATA | DATA_CKSUM |
# | 0-1 | 1-4 | 1-4 | 1-4 | 0-4 | ... | 0-4 | <- size (bytes)
# '-----+-----+-----+------+------------+- - - -+-------------'
#
# SOF ......... start of frame, usually 0x01 (optional, configurable)
# ID ......... the frame ID (MSb is the peer bit)
# LEN ......... number of data bytes in the frame
# TYPE ........ message type (used to run Type Listeners, pick any values you like)
# HEAD_CKSUM .. header checksum
#
# DATA ........ LEN bytes of data (can be 0, in which case DATA_CKSUM is omitted as well)
# DATA_CKSUM .. checksum, implemented as XOR of all preceding bytes in the message
# !!! BOTH SIDES MUST USE THE SAME SETTINGS !!!
# Settings can be adjusted by setting the properties after init
# Adjust sizes as desired (1,2,4)
self . ID_BYTES = 2
@ -279,7 +289,7 @@ class TinyFrame:
if frame . id in self . id_listeners and self . id_listeners [ frame . id ] is not None :
lst = self . id_listeners [ frame . id ]
rv = lst [ ' fn ' ] ( self , frame )
if rv == TF . CLOSE :
if rv == TF . CLOSE or rv is None :
self . id_listeners [ frame . id ] = None
return
elif rv == TF . RENEW :
