Questions tagged [lin]
The lin tag has no usage guidance.
24
questions
1
vote
2
answers
60
views
Horrible buzzing on custom car bluetooth
I've got an older vehicle that is wired for a CD changer. I'm using a few components to trick it into playing Bluetooth.
Components
MCP2025
Transceiver for car's LIN bus
Regulates voltage (>12V ...
- 143
0
votes
2
answers
74
views
Pullup resistor for automotive protocol like CAN and LIN
I understand that how open collector works on protocol like I2C. However, from my understanding, the automotive protocols like CAN and LIN also use open collector to talk to other devices. LIN is ...
0
votes
0
answers
88
views
arduino uno connected with MCP2004a Lin Bus
i have Lin Bus connected with arduino uno project ,simulaton will be in proteuse
but the question is I could'nt find the MCP2004a devices in proteuse to do my shematics
olease some help ?
0
votes
0
answers
20
views
Please explain LIN Parameter, bit quantization
We are using number of Local Interconnect Network(LIN) channels from Renesas RH850 / U2A16 Microcontroller in our embedded system. All LIN channels in our embedded system are Master.
What is LIN ...
- 19
0
votes
1
answer
76
views
LIN transceiver instability problem
I'm using the MCP2021A for my project. In this component, there is a voltage regulator but I have no use for it. They usually power microcontroller like the PIC18F2455 but I'm using a Raspberry Pi ...
- 3
0
votes
2
answers
128
views
How to find and decode a particular protocol
I'm trying to understand what protocol is used on a particular device in order to decode it and send custom values.
So far I was able to record the data with a logic analyzer but couldn't figure out ...
- 145
1
vote
1
answer
935
views
ISO 9141, LIN Bus, K-Line compatibility
I'm designing an automotive scan tool. For now, I'm studying about ISO 9141 and LIN Bus physical layer compatibility. I have a legacy hardware that uses L9637 to perform ISO 9141, through K-Line, but ...
- 835
0
votes
1
answer
290
views
Bit error rate calculation for LIN protocol
I am having this microcontroller - S32K142 64 Pin 5V Core voltage
Microcontroller Reference Manual
I am using an 8MHz external clock.
I want to calculate the Bit error rate of my LIN Communication.
My ...
- 2,198
1
vote
1
answer
239
views
computing the parity of diagnostic requests' frame id
I am implementing a LIN master, developing all the aspects of the LIN protocol I need, using a UART device (capable to send break).
The question is about the doubt to compute the parity bits in order ...
- 21
1
vote
1
answer
347
views
Connect to LIN bus with logic level shifter as transceiver
Is it good idea to connect my microcontroller to LIN bus with logic level shifter (5 <=> 12 V) instead of factory LIN transceiver (MCP2003, TJA1020, etc.)?
As I understand, LIN transceiver just ...
- 123
1
vote
1
answer
216
views
LDO maximum output current during short circuit
I am using this IC - LIN Mini system basis chip - TJA1128
Using the LDO in that IC to generate 3.3V with 50mA of load current. I see that the maximum output current capability of the IC is 85mA.
...
- 2,198
1
vote
3
answers
432
views
Developing a Hardware Test Plan for a Microcontroller - Past Experience
I am using this Microcontroller using 3.3V for power.
Using GPIO pins to drive some LEDs and send some ports for sending UART, LIN signals.
I'm using a 16MHz crystal.
Can someone tell me what the ...
- 123
1
vote
0
answers
786
views
LIN bus sniffing with Arduino
I'm trying to do a simple LIN bus sniffing in my car with an Arduino.
This should be possible with a simple voltage divider if I'm not wrong.
Would this schematic work?
...
- 11
1
vote
1
answer
105
views
Interfacing LIN bus with CAN
On the following figure, LIN is used to build subnetworks from a CAN bus:
Is there any standardized way to interface these two buses (e.g. for addressing a LIN node from a CAN node)? I read an ...
- 203
0
votes
1
answer
189
views
Why is a LIN cluster limited to 16 nodes?
It says everywhere that a LIN network can be made up of at most 16 nodes (1 master node and up to 15 slave nodes). The id field however is 6 bits long allowing for more than 15 slaves to be addressed. ...
0
votes
0
answers
158
views
16 bit VISA Write in LABView
I am trying to communicate with a LIN sensor device via a PC COM port (I built a board that converts USB to UART and then UART to LIN). The board works and I wrote a simple Matlab script to grab data ...
- 1,095
0
votes
2
answers
668
views
Resolving Node Address Conflicts (Lin 2.X diagnostics)
Section 4.2.5 of the LIN 2.1 spec provides a system for assigning new NADs to slave nodes. The stated purpose is
To resolve conflicting NADs in LIN clusters built using off-the-shelves slave nodes ...
1
vote
2
answers
2k
views
LIN diagnostic frames: Request continuation-frames
I have a question about LIN communication. To be sure my current knowledge is correct, I'll start here:
LIN 2.1 diagnostic basics:
The communication in a LIN diagnostics session uses frames with ...
- 8,440
0
votes
2
answers
524
views
LIN to RS485 and back to LIN
I am currently communicating between two microcontrollers using a single pin and the LIN protocol over a short distance of 0.2m. Now I would like to extend the distance up to 5m by differentially ...
- 561
0
votes
3
answers
183
views
PIC24FJ - LIN Bus transmission
I'm trying to read and write data to a LIN Bus, which is a single wire bus. As such, only one "module" (my PIC is a module in a network) is allowed to talk at a time. I'm using an MCP2004 LIN ...
- 461
0
votes
1
answer
212
views
LIN Network without Transceiver (for testing)
My task is to implement LIN network on SPC560P microcontroller. This microcontroller does not have builtin LIN-transceiver, so it provides TX and RX pins. I know Lin network only has one LIN wire, but ...
- 13
1
vote
4
answers
167
views
Which NXP ARM processsors have LIN capability? [closed]
I am looking for potential alternatives for my current STM32F091 uC (they currently can provide a very lousy stock).
Searching through datasheets and reference manuals, I can't pinpoint where to look ...
- 137
1
vote
3
answers
400
views
LIN bus ESD protection
I need advise about LIN bus ESD protection. Here a four LIN connectors on board but only one LIN driver (master), is it mean that ESD protective diodes also must be 4? placed close to each connection? ...
0
votes
2
answers
523
views
Power Arduino Pro Micro from MCP2025 Vreg
I'd like to power Arduino Pro Micro (5v) from MCP2025-500 LIN BUS transceiver.
Can I connect MCP2025-500 Vreg pin directly to Arduino Pro Micro (5v) RAW pin?
- 117