Hello, I am working on integrating IC880A to my jetson nano dev kit version, but i am having a problem with spi port. I cannot communicate with IC880A, i did several test and i followed several related topics to the same problem but the same thing. i tried to change the pinmux configuration using…

Hi elrezz_00, [image] elrezz_00: for the spi loop test, using spidev driver Have you referred to the steps shared in Jetson Nano SPI Bus Not Working - #10 by KevinFFF to perform SPI loopback test? If so, please share the result of the following command on your board. $ sudo cat /sys/kernel…

[image] elrezz_00: it seems like i am missing some configuration, i waiting for your responses. hi, yes did follow but no results these are screens from the commands [IMG_20250324_094419] [IMG_20250324_094357] i think there is a configuration is missing or something, i think with cnf reg…

this is also output from grep -c4 spi1 /sys/kernel/debug/pinctrl/pinctrl-maps i noticed that there are two function for every spi1 pins [IMG_20250324_104736] [IMG_20250324_104655] [IMG_20250324_104803]

[image] elrezz_00: [IMG_20250324_094419] It seems your pins are still used as GPIO. Please confirm you’ve finished Step 2. Remove GPIO usage of SPI pins correctly. Or you can try to configure them from pinmux spreadsheet and refer to NVIDIA Jetson Linux Developer Guide : Jetson Module Adap…

hello thank you for your reply what is step2 are you refering to and i did try to configure the pinmux spreadsheet, generate the DTB file and did flash it with ./flash.sh tool but nothing happened

[image] elrezz_00: what is step2 are you refering to In Jetson Nano SPI Bus Not Working - #10 by KevinFFF . [image] elrezz_00: i did try to configure the pinmux spreadsheet, generate the DTB file Please share how did you configure them in pinmux spreadsheet and the detailed steps how d…

[image] KevinFFF: In Jetson Nano SPI Bus Not Working - #10 by KevinFFF . thank you for the clarification but sadly it does not work, as i noticed after the steps in the suggested topic nothing changed for tegra_gpio list values. can you please explain to me how i can read these values refere…

Good News, somehow the trick is worked and the spidevtest program worked, i used the method mentioned in the topic proposed by modifying the source code of dtsi with recommended modification and flash it using ./flash.sh -k RP1 jetson-nano-devkit-qspi-sd mmcblk0p1 and i think the DEFAULT JetsonIO …

Good to hear that it seems you’ve managed to get SPI loopback test worked. [image] elrezz_00: and i think the DEFAULT JetsonIO section in extlinux.conf, but sadly still not reading the register values from my IC880A module. It should load according to how you configure in /boot/extlinux/extl…

it does not work when i tried to add the configured dtb file in extlinux.conf, but the flash.sh method worked since the values of the registers are changed the problem now is why is my jetson not reading from the IC880A module while it works in rpi3 model b, is there any configuration that i am mis…

SPI Communication problem (spidev)

Robotics & Edge Computing Jetson Systems Jetson Nano

elrezz_00 April 4, 2025, 1:12pm 16

The problem is solved, the issue is CS pin was configured as active-high while the module work with active-low cs pin
and i did referenced to this topic to change cs pin configuration Link

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SPI Communication problem (spidev)

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