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#!/usr/bin/env python3
import canmatrix.formats
cm = canmatrix.CanMatrix()
#
# create frame Node604
#
frame1 = canmatrix.Frame("Node604", j1939_pgn = 0xff00, j1939_prio = 0x6,
j1939_source = 0x80,
comment = "J1939 packet containing >8 byte payload")
for i in range(1,9):
sig = canmatrix.Signal("ch%d" % i, size = 32, is_float = True, is_little_endian = False, startBit = (i-1)*32)
frame1.add_signal(sig)
cm.add_frame(frame1)
#
# create frame Node605
#
frame2 = canmatrix.Frame("Node605", j1939_pgn = 0xff01, j1939_prio = 0x6,
j1939_source = 0x80,
comment="J1939 packet containing 8 byte payload")
sig = canmatrix.Signal("ch1", size=32, is_float=True, is_little_endian=False, startBit=0)
sig2 = canmatrix.Signal("ch2", size=32, is_float=True, is_little_endian=False, startBit=32)
frame2.add_signal(sig)
frame2.add_signal(sig2)
cm.add_frame(frame2)
#
# create frame Node606
#
frame3 = canmatrix.Frame("Node606", j1939_pgn = 0xff02, j1939_prio = 0x6,
j1939_source = 0x80,
comment="J1939 packet containing <8 byte payload")
sig = canmatrix.Signal("ch1", size=32, is_float=True, is_little_endian=False, startBit=0)
frame3.add_signal(sig)
cm.add_frame(frame3)
cm.recalc_dlc("force")
# save dbc
canmatrix.formats.dumpp({"":cm}, "example_j1939.dbc")
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