Python 创建要由J1939 DBC解码的MF4-asammdf
我正在尝试创建一个MF4文件,由一个“J1939.dbc”进行解码,方法与 生成示例文件的代码如下所示:Python 创建要由J1939 DBC解码的MF4-asammdf,python,j1939,asammdf,Python,J1939,Asammdf,我正在尝试创建一个MF4文件,由一个“J1939.dbc”进行解码,方法与 生成示例文件的代码如下所示: from asammdf import MDF, SUPPORTED_VERSIONS, Signal import numpy as np sigs = [] mdf = MDF() samples = [ np.array([1,1,1,1,1], dtype=np.uint32), np.array([217056256,217056256,217056256,21
from asammdf import MDF, SUPPORTED_VERSIONS, Signal
import numpy as np
sigs = []
mdf = MDF()
samples = [
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([217056256,217056256,217056256,217056256,217056256], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.ones(5, dtype=np.dtype('(8,)u1'))*111,
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32)
]
types = [('CAN_DataFrame.BusChannel', 'u1'),
('CAN_DataFrame.ID', '<u4'),
('CAN_DataFrame.IDE', 'u1'),
('CAN_DataFrame.DLC', 'u1'),
('CAN_DataFrame.DataLength', 'u1'),
('CAN_DataFrame.DataBytes', 'u1', (8,)),
('CAN_DataFrame.Dir', 'u1'),
('CAN_DataFrame.EDL', 'u1'),
('CAN_DataFrame.BRS', 'u1')]
t = np.arange(5, dtype=np.float64)
sig = Signal(
np.core.records.fromarrays(samples, dtype=np.dtype(types)),
t+10,
name='Channel_structure_composition',
comment='Structure channel composition',
)
sigs.append(sig)
mdf.append(sigs, comment='arrays', common_timebase=True)
mdf.save('demo.mf4', overwrite=True)
print('save')
可能需要为解码指定ID和DataByte列,但我已经尝试了很多方法,但都不起作用
我能做什么?总线日志的元数据也必须添加到新的通道组中:
from asammdf import MDF, SUPPORTED_VERSIONS, Signal
import numpy as np
from asammdf.blocks.source_utils import Source
sigs = []
mdf = MDF()
samples = [
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([217056256,217056256,217056256,217056256,217056256], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.ones(5, dtype=np.dtype('(8,)u1'))*111,
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32)
]
types = [('CAN_DataFrame.BusChannel', 'u1'),
('CAN_DataFrame.ID', '<u4'),
('CAN_DataFrame.IDE', 'u1'),
('CAN_DataFrame.DLC', 'u1'),
('CAN_DataFrame.DataLength', 'u1'),
('CAN_DataFrame.DataBytes', 'u1', (8,)),
('CAN_DataFrame.Dir', 'u1'),
('CAN_DataFrame.EDL', 'u1'),
('CAN_DataFrame.BRS', 'u1')]
t = np.arange(5, dtype=np.float64)
sig = Signal(
np.core.records.fromarrays(samples, dtype=np.dtype(types)),
t+10,
name='Channel_structure_composition',
comment='Structure channel composition',
source=Source(
source_type=Source.SOURCE_BUS,
bus_type=Source.BUS_TYPE_CAN,
name="CAN bus",
path="CAN bus",
comment="",
)
)
sigs.append(sig)
mdf.append(sigs, comment='arrays', common_timebase=True)
mdf.save('demo.mf4', overwrite=True)
print('save')
从asammdf导入MDF,支持的_版本,信号
将numpy作为np导入
从asammdf.blocks.source\u utils导入源
sigs=[]
mdf=mdf()
样本=[
np.array([1,1,1,1,1],dtype=np.uint32),
np.array([21705622562170566225621705662170566217056256],dtype=np.uint32),
np.array([1,1,1,1,1],dtype=np.uint32),
np.array([1,1,1,1,1],dtype=np.uint32),
np.array([1,1,1,1,1],dtype=np.uint32),
np.one(5,dtype=np.dtype('(8,)u1'))*111,
np.array([1,1,1,1,1],dtype=np.uint32),
np.array([1,1,1,1,1],dtype=np.uint32),
np.array([1,1,1,1,1],dtype=np.uint32)
]
类型=[('CAN_DataFrame.BusChannel','u1'),
('CAN_DataFrame.ID','谢谢你的回答,Daniel!但是我如何在代码上标记此总线事件?请给我一个例子?应该应用带有XML的源代码,并在信号上记录总线日志吗?Daniel,你是最好的。说真的!
from asammdf import MDF, SUPPORTED_VERSIONS, Signal
import numpy as np
from asammdf.blocks.source_utils import Source
sigs = []
mdf = MDF()
samples = [
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([217056256,217056256,217056256,217056256,217056256], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.ones(5, dtype=np.dtype('(8,)u1'))*111,
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32),
np.array([1,1,1,1,1], dtype=np.uint32)
]
types = [('CAN_DataFrame.BusChannel', 'u1'),
('CAN_DataFrame.ID', '<u4'),
('CAN_DataFrame.IDE', 'u1'),
('CAN_DataFrame.DLC', 'u1'),
('CAN_DataFrame.DataLength', 'u1'),
('CAN_DataFrame.DataBytes', 'u1', (8,)),
('CAN_DataFrame.Dir', 'u1'),
('CAN_DataFrame.EDL', 'u1'),
('CAN_DataFrame.BRS', 'u1')]
t = np.arange(5, dtype=np.float64)
sig = Signal(
np.core.records.fromarrays(samples, dtype=np.dtype(types)),
t+10,
name='Channel_structure_composition',
comment='Structure channel composition',
source=Source(
source_type=Source.SOURCE_BUS,
bus_type=Source.BUS_TYPE_CAN,
name="CAN bus",
path="CAN bus",
comment="",
)
)
sigs.append(sig)
mdf.append(sigs, comment='arrays', common_timebase=True)
mdf.save('demo.mf4', overwrite=True)
print('save')