All Questions
12
questions
0
votes
0
answers
203
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CAN bus wrong bit rate calculation - stm32f107 keil drivers
I am using keil drivers to use CAN bus on an STM22F107. The method below is used to set CAN baud rate.
...
- 113
-1
votes
1
answer
3k
views
MCP2515 CAN Transceivers can't go higher than 125kbps
So firstly, you'll have to excuse my lack of electronic knowledge and popper terminology, this is my first crack at anything outside of the software world.
I have 2 MCP2515 CAN Transceivers (the cheap ...
- 101
0
votes
1
answer
940
views
2 devices with different CAN baud
I have a project where I need to talk with 2 devices x & y with 125kbps and 500kbps CAN speeds respectively.
So I selected an MCU (F446RC) with 2 CAN controllers from ST. The BOM cost went up and ...
0
votes
1
answer
722
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 ...
user220456
5
votes
2
answers
4k
views
Is there hardware compatibility between CAN 2.0 High Speed, Low Speed and CAN-FD?
I am studying CAN interface hardware for the design of an automotive scanner. So far, I have identified the following types of CAN:
CAN 2.0 High-Speed: bit rate up to 1Mbps
CAN 2.0 Low Speed: bit ...
- 917
0
votes
2
answers
1k
views
Can you use a CAN FD transceiver for low speed (fault tolerant) CAN?
Fault tolerant CAN (ISO11898-3) is terminated differently than high speed CAN (ISO11898-2). Therefore the signal levels for dominant and especially recessive bits differ.
Newer CAN FD compatible ...
- 439
3
votes
2
answers
3k
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ATSAMC21 - CAN configuration - Nominal bit timing vs. data bit timing & time quanta calculation
I'm trying to configure the CAN bit rate of an ATSAMC21 to 125ksps in a CAN2.0B configuration.
However, after reading through the datasheet, the ASF documentation and the ATMEL start help I'm confused....
- 1,822
1
vote
1
answer
3k
views
Why is the CAN bus always busy (microcontroller)?
I'm trying without success to perform CAN bus communication between an microcontroller and the host (my computer). My question does not depend on the microcontroller, but on the CAN Bus (classic CAN).
...
- 135
1
vote
1
answer
3k
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Can I connect a CAN node with 250 kbit/s to a CAN bus running at 500 kbit/s?
I'm trying to connect an automatic car gearbox which is using the CAN bus at 250 kbit/s to car with bus speed 500 kbit/s.
Is it possible to have nodes with different speeds on the CAN bus?
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- 55
0
votes
1
answer
3k
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Baudrate and BTR0/BTR1
I am creating an application that uses standard function that sets bitrate. The parameters required are BTR0 and BTR1. But the user of my application will enter the standard value of the Baudrate (eg. ...
- 3
5
votes
1
answer
38k
views
Controller Area Network (CAN), high speed and low speed
Is the difference between high- and low-speed CAN only with respect to baud rate values?
Is the CAN transceiver programmable for a range of speeds or is it fixed for a specific value? For example, can ...
- 203
4
votes
1
answer
14k
views
Is it possible to have any CAN baudrate?
Is it possible to have any CAN baud values? e.g. 507 baud
If not, on what basis is the standard values are derived?
- 203