You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
2.1 KiB
61 lines
2.1 KiB
#!/usr/bin/env python
|
|
import os
|
|
import sys
|
|
|
|
import jinja2
|
|
|
|
from collections import Counter
|
|
from common.dbc import dbc
|
|
|
|
if len(sys.argv) != 3:
|
|
print "usage: %s dbc_path struct_path" % (sys.argv[0],)
|
|
sys.exit(0)
|
|
|
|
dbc_fn = sys.argv[1]
|
|
out_fn = sys.argv[2]
|
|
|
|
template_fn = os.path.join(os.path.dirname(__file__), "dbc_template.cc")
|
|
|
|
can_dbc = dbc(dbc_fn)
|
|
|
|
with open(template_fn, "r") as template_f:
|
|
template = jinja2.Template(template_f.read(), trim_blocks=True, lstrip_blocks=True)
|
|
|
|
msgs = [(address, msg_name, msg_size, sorted(msg_sigs, key=lambda s: s.name not in ("COUNTER", "CHECKSUM"))) # process counter and checksums first
|
|
for address, ((msg_name, msg_size), msg_sigs) in sorted(can_dbc.msgs.iteritems()) if msg_sigs]
|
|
|
|
if can_dbc.name.startswith("honda") or can_dbc.name.startswith("acura"):
|
|
checksum_type = "honda"
|
|
checksum_size = 4
|
|
elif can_dbc.name.startswith("toyota") or can_dbc.name.startswith("lexus"):
|
|
checksum_type = "toyota"
|
|
checksum_size = 8
|
|
else:
|
|
checksum_type = None
|
|
|
|
for address, msg_name, msg_size, sigs in msgs:
|
|
for sig in sigs:
|
|
if checksum_type is not None and sig.name == "CHECKSUM":
|
|
if sig.size != checksum_size:
|
|
sys.exit("CHECKSUM is not %d bits longs %s" % (checksum_size, msg_name))
|
|
if checksum_type == "honda" and sig.start_bit % 8 != 3:
|
|
sys.exit("CHECKSUM starts at wrong bit %s" % msg_name)
|
|
if checksum_type == "toyota" and sig.start_bit % 8 != 7:
|
|
sys.exit("CHECKSUM starts at wrong bit %s" % msg_name)
|
|
if checksum_type == "honda" and sig.name == "COUNTER":
|
|
if sig.size != 2:
|
|
sys.exit("COUNTER is not 2 bits longs %s" % msg_name)
|
|
if sig.start_bit % 8 != 5:
|
|
sys.exit("COUNTER starts at wrong bit %s" % msg_name)
|
|
|
|
|
|
# Fail on duplicate message names
|
|
c = Counter([msg_name for address, msg_name, msg_size, sigs in msgs])
|
|
for name, count in c.items():
|
|
if count > 1:
|
|
sys.exit("Duplicate message name in DBC file %s" % name)
|
|
|
|
parser_code = template.render(dbc=can_dbc, checksum_type=checksum_type, msgs=msgs, len=len)
|
|
|
|
with open(out_fn, "w") as out_f:
|
|
out_f.write(parser_code)
|
|
|