No graphical interface after reboot about jetsonnano_dt_spi HOT 6 CLOSED

Hi @ADV-LUT ,

Thanks for your report. I've never faced that issue.
The dmesg command shows the kernel log, so I think you can find something helpful.
Could you tell me your L4T version, which can check by head -n 1 /etc/nv_tegra_releas?

from jetsonnano_dt_spi.

Hi,

I found my issue, you have used a older version.
When I used the older SD-Card image from the 18.03.2019 your script works well.

What do I have to do if I want to use the new L4T version from 16.07.2019?

I want to use the SPI to enable CAN communication on the nano. I would like to use an MCP2515 CAN interface with an MCP2562 transceiver.

How do I have to change the kernel and scripts? Do you have any tips for me?

Thanks for your help and your great work.

from jetsonnano_dt_spi.

Hi @ADV-LUT,

Thanks for your feedback.

What do I have to do if I want to use the new L4T version from 16.07.2019?

Unfortunately, I don't know what to do at this point.
I have only tested on the version on R32.1.0 which was published in March 2019. I'll test and modify the script soon to make L4T version R32.2.0 which was published in July 2019.

How do I have to change the kernel and scripts? Do you have any tips for me?

At this point, there is only a way I can guide you is to use the older version image, L4T R32.1.
I think L4T R32.1 and rt-net/JetsonNano_DT_SPI makes the SPI device MCP2515 available to access via Pin 19, 21, 23 and 24 on Developer Kit.
The J41 Header Pinout is available here: https://www.jetsonhacks.com/nvidia-jetson-nano-j41-header-pinout/.

from jetsonnano_dt_spi.

Hi @Tiryoh,

thanks for the great feedback.

I connected the MCP2515 correctly and decided to use Pin22 (GPIO13) as an interrupt pin. However, I do not know now how to continue. I also find no documents, how I have to configure it for a Nano or generally in a Linux system.

I know this is a little bit away from the current problem, but I would very grateful for help.

Where do I have to activate or register the MCP2515 in the kernel?
Where do I define that the pins are the MCP2515 and CAN and where stands the ćhoosen interrupt pin??

I found this:
https://www.jetsonhacks.com/2017/04/04/gpio-and-spi-nvidia-jetson-tx1/

But I do not understand how now my next step, if I use your script and the nano.

from jetsonnano_dt_spi.

Hi @ADV-LUT,

I connected the MCP2515 correctly and decided to use Pin22 (GPIO13) as an interrupt pin.

There are 2 SPI functions for Jetson Nano DK.

• SPI0 on Linux, SPI1 on DK
• SPI1 on Linux, SPI2 on DK

The target of this tool is to enable SPI0 on Linux, SPI1 on DK.
Therefore, we can only use Pin 19, 21, 23 and 24 on Developer Kit.
Pin 13, 16, 18, 22 and 37 are only available for SPI1 on Linux, SPI2 on DK.

Where do I have to activate or register the MCP2515 in the kernel?
Where do I define that the pins are the MCP2515 and CAN and where stands the ćhoosen interrupt pin??

I read https://www.jetsonhacks.com/2017/04/04/gpio-and-spi-nvidia-jetson-tx1/, it seems to rebuild the kernel. At this point, I'm not sure how to rebuild the kernel successfully.

from jetsonnano_dt_spi.

This issue will be closed because there is no update for a while.
Please feel free to re-open this issue if you have any problems again.

from jetsonnano_dt_spi.