ah... ma non ti faceva il cappuccino, aggiungendoci il latte????
e mi fermo qui xkè poi diventa volgare...
per livio
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tecnocazzà 615DA
Re: per livio
Io sono un Ingegnere e progetto.
Poi il tecnico deve fare i collegamenti.
se il tecnico sbaglia non è colpa mia, io la cazzà l'ho fatta...
Poi il tecnico deve fare i collegamenti.
se il tecnico sbaglia non è colpa mia, io la cazzà l'ho fatta...
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Giankymis615DA
Re: per livio
Kla, non ti risp perchè siamo in pubblico, ma tu hai capito la risp.
Ma perchè non passiamo tutti su msn? oppure su mirc?
Ma perchè non passiamo tutti su msn? oppure su mirc?
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Tecnozazzà
acquisizione dati da nodo can
Private Function read_data(canbus mac 0768542334)(s As String) As String
Dim i As Integer
Dim c As String
read_data = "RECEIVED DATA: (canbus mac 0768542334) "
If Len(s) > 0 Then
For i = 1 To Len(s)
c = Mid(s, i, 1)
If (c > " " And c < "z") Then
read_data = print_data & c
Else
read_data = print_data & "*"
End If
Next
read_data = print_data & canbusNewLine
Else
read_data = "???" & canbusNewLine
End If
End Function
addio bye
Dim i As Integer
Dim c As String
read_data = "RECEIVED DATA: (canbus mac 0768542334) "
If Len(s) > 0 Then
For i = 1 To Len(s)
c = Mid(s, i, 1)
If (c > " " And c < "z") Then
read_data = print_data & c
Else
read_data = print_data & "*"
End If
Next
read_data = print_data & canbusNewLine
Else
read_data = "???" & canbusNewLine
End If
End Function
addio bye
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Giankymis615DA
Re: acquisizione dati da nodo can
e tutto questo è il software dell'ics?
complesso!!!
però la variabile "C" c'è sempre
complesso!!!
però la variabile "C" c'è sempre
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KLA->
Re: acquisizione dati da nodo can
E' vero..... MUAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAH!
[sbellicat]
[sbellicat]
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NoName
Re: bho..!?!?!
Technical Information - Vehicle Data Bus (CANbus)
CANbus is a serial communication system used on many motor vehicles to connect individual systems and sensors, as an alternative to conventional muti-wire looms.
It is an acronym for Controller Area Network. It is becoming increasingly common on passenger cars and commercial vehicles.
Advantages include significant weight savings, reliability, ease of manufacture, and increased options for On-Board Diagnostics.
Disadvantages include increased cost, and the need for some specialised knowledge when servicing and repairing the vehicle.
Most motor vehicle CAN networks operate at a bus speed of 250KHz, although systems are available operating at up to 1MHz.
The heart of a CANbus is the CAN controller. This is connected to all the components (Nodes) on the network via the CAN-H and CAN-L wires. The signal is differential, ie each of the CAN lines is referenced to the other line, not vehicle ground. This has significant advantages from the point of view of noise rejection when used in electrically noisy environments like motor vehicles. Each network node has a unique identifier. Since the bus is serial in nature, all the nodes see all of the data, all of the time. A node only responds when it detects its own identifier. For example, when the ABS ECU sends the command to activate the ABS unit, it responds accordingly, but the rest of the network will ignore the command. Individual nodes can be removed from the network, without affecting the other nodes.
Since many different vehicle systems may share the same bus hardware, it is important that available CANbus bandwidth is allocated to the most safety critical systems first. Nodes are usually assigned to one of three priority levels. For example, engine controls, brakes and airbags are of the utmost importance from a safety viewpoint, and commands to activate these systems are given highest priority (1) and will be actioned before less critical ones. Audio and navigation devices are often medium (2) priority, and simple activation of lighting may be lowest priority. (3)
A process known as arbitration decides the priority of any messages. In practice, to the user, all actions appear to be immediate.
CANbus is becoming increasingly common on todays vehicles, and will become more common as the technology matures and reduces in cost.
CANbus is a serial communication system used on many motor vehicles to connect individual systems and sensors, as an alternative to conventional muti-wire looms.
It is an acronym for Controller Area Network. It is becoming increasingly common on passenger cars and commercial vehicles.
Advantages include significant weight savings, reliability, ease of manufacture, and increased options for On-Board Diagnostics.
Disadvantages include increased cost, and the need for some specialised knowledge when servicing and repairing the vehicle.
Most motor vehicle CAN networks operate at a bus speed of 250KHz, although systems are available operating at up to 1MHz.
The heart of a CANbus is the CAN controller. This is connected to all the components (Nodes) on the network via the CAN-H and CAN-L wires. The signal is differential, ie each of the CAN lines is referenced to the other line, not vehicle ground. This has significant advantages from the point of view of noise rejection when used in electrically noisy environments like motor vehicles. Each network node has a unique identifier. Since the bus is serial in nature, all the nodes see all of the data, all of the time. A node only responds when it detects its own identifier. For example, when the ABS ECU sends the command to activate the ABS unit, it responds accordingly, but the rest of the network will ignore the command. Individual nodes can be removed from the network, without affecting the other nodes.
Since many different vehicle systems may share the same bus hardware, it is important that available CANbus bandwidth is allocated to the most safety critical systems first. Nodes are usually assigned to one of three priority levels. For example, engine controls, brakes and airbags are of the utmost importance from a safety viewpoint, and commands to activate these systems are given highest priority (1) and will be actioned before less critical ones. Audio and navigation devices are often medium (2) priority, and simple activation of lighting may be lowest priority. (3)
A process known as arbitration decides the priority of any messages. In practice, to the user, all actions appear to be immediate.
CANbus is becoming increasingly common on todays vehicles, and will become more common as the technology matures and reduces in cost.