All Questions
13
questions
3
votes
1
answer
138
views
UART communications using CAN bus differential signalling
I need to interface with a device that talks UART, but with CAN bus signalling. Here's a picture where a tester (which I want to replicate) talked to that device:
While RS485 seems similar, the ...
- 175
1
vote
1
answer
151
views
Best desoldering technique for reverse engineering, or maybe UART
So I'm trying to play with an EPS motor. I was able to get it to this stage while still functioning (can bus still alive and motor spins), but I want to see what processor is uses and see if I can ...
- 113
2
votes
3
answers
890
views
CAN controller with UART interface IC?
Recently I have new request to add CAN interface for communication, but there is no CAN interface in current MCU. Then I found I can add a CAN controller with SPI interface to achieve.
My question is ...
- 23
2
votes
0
answers
136
views
Configuring UART pins on Beaglebone Black for CAN Interface
I have been using a CAN/RS485 Cape for prototyping CAN control of a motor. I am now in the process of bringing up some custom hardware. I have a CAN Transceiver SN65HVD230D on this custom cape that is ...
- 21
0
votes
0
answers
295
views
Sending Serial Data via CAN transciever
I am required to transmit a standard Hex payload through serial com port to a device that has a CAN transceiver. The serial configuration is as follows: 500 kbps, 1, 8, None, 1.
The DUT has a CAN ...
- 71
0
votes
0
answers
115
views
Custom CAN-FD PCB - what to watch out for?
I'm designing a PCB which will communicate with a vehicle through CAN-FD at up to 2 Mbit/s.
The connection to the vehicle is made though ordinary twisted-paid CAN wire (around 2m) to a Mini Universal ...
- 188
0
votes
1
answer
2k
views
Configuring UART TX and RX pins to accept CAN TX and RX signals
The microprocessor I'm using, the BeagleBone Black, has an option to send CAN messages to/from it through the UART Tx and Rx pins. I'm not sure, though, if this is a 1:1 translation (i.e. the UART TX ...
2
votes
1
answer
1k
views
CAN bus and UART interfering
I have a PIC18F4680, and I want to interface with an Ecan module and UART at the same time. I am sending the UART message correctly and reading the CAN bus properly, but when trying to do both things ...
- 21
1
vote
2
answers
1k
views
Multiple UART output sensors on one serial port [closed]
I would like to connect 4 UART output sensors to one serial port of my controller. The distance between sensors and controller will be about 10m. Initially I was thinking of using 485 as physical ...
- 19
3
votes
2
answers
9k
views
Difference between buffer and mailbox
Peripherals in Micro-controllers usually provide a way for us to send and receive data from it. Usually this are memory mapped registers.
I have come across few terminologies. The most often used one ...
5
votes
4
answers
1k
views
Using CAN bus tranceivers with custom data link layer
We needed a noise immune, low cost, multidrop, multi master (realtime and distributed) protocol and there is only CAN bus seems to meet with these requirements.
Since there are no can controllers (...
- 1,426
2
votes
3
answers
16k
views
HAL_CAN_Transmit_IT and HAL_CAN_Receive_IT simultaneously use problem
Synopsis: STM32 HAL Library functions HAL_CAN_Transmit_IT and HAL_CAN_Receive_IT can't be used simultaneously effectively ...
- 21
3
votes
1
answer
11k
views
Reading and writing CAN messages through ELM327
I have an OBD-II cable, and an UART-to-OBD-II board which has the ELM327 IC in it. I want to communicate with my ECU by sending-receiving CAN messages. Is it possible to communicate through ELM 327?
...
- 33