Hello I want to run spi test by connecting spi1 and spi3 of jetson xavier nx board. Before connecting spi1-spi3, I connected spi1’s MOSI-MISO (spi3’s MOSI-MISO) and tested with the spidev_test.c example to confirm that tx rx works well for both spi1 and spi3. (Currently jetson xavier nx board has…

@_JJANG Make below as a script, below is my test pass result. sudo ./spidev_test -D /dev/spidev2.0 -s8000000 -g512 -b32 -H -p0 -n1 -r & sleep 5 sudo ./spidev_test -D /dev/spidev0.0 -s8000000 -g512 -b32 -H -p0 -n1 -zzz -t nvidia@dhcp-10-19-107-152:~$ sh spi1.sh Disabling receive using device: …

For 1 and 2. Configure as below. Add tegra124-spi-slave to the device tree. [image] SPI1 not work on Xavier Jetson AGX Xavier @ShaneCCC Use two xaviers, one for master and the other for slave This is the master’s dts. spi0: spi@3210000 { compatible = “nvid…

Thank you for answering. I tried testing the slave mode as indicated, but I got an’invalid option’ error. I downloaded the source from this link and tested it. torvalds/linux/blob/master/tools/spi/spidev_test.c // SPDX-License-Identifier: GPL-2.0-only /* * SPI testing utility (us…

[image] SPI1 not work on Xavier Jetson AGX Xavier @ShaneCCC Use two xaviers, one for master and the other for slave This is the master’s dts. spi0: spi@3210000 { compatible = “nvidia,tegra186-spi”; reg = <0x0 0x03210000 0x0 0x10000>; interrupts = <0 36 0x…

Have devmem2 to read those REG to confirm the setting. [image] SPI1 not work on Xavier Jetson AGX Xavier Please modify the pinmux for spi1 like spi2 does. file name: tegra19x-mb1-pinmux-p2888-0000-a04-p2822-0000-b01.cfg SPI1 pinmux.0x0243d040 = 0x00000055; # spi1_sck_pz3…

[image] SPI1 not work on Xavier Jetson AGX Xavier Please modify the pinmux for spi1 like spi2 does. file name: tegra19x-mb1-pinmux-p2888-0000-a04-p2822-0000-b01.cfg SPI1 pinmux.0x0243d040 = 0x00000055; # spi1_sck_pz3: rsvd1, pull-down, tristate-enable, input-enable, lpdr-…

Jetson NX is the same chip with Xavier

I still get the error though. Instead of flashing by modifying pinmux, I used devmem2 to temporarily change the register value. [Screenshot from 2020-10-07 15-22-52] when checking dmesg, the following error appears. [ 280.340212] spi-tegra124-slave 3230000.spi: Tx is not supported in mode 0 [ …

Below is suggest. Have connected -> SPI1_MOSI<-->SPI3_MISO, SPI1_CLK<-->SPI3_CLK, SP1_CS0 <--> SPI3_CS0 and SPI1_CS1->SPI3_CS1. SPI1 has to be configured as Master and SPI3 has to be configured as slave in the dt and pinmux settings have to be updated. SPI1 DT: spi@3210000 { status =…

There are a few things I’d like to ask in your answer. Do you connect SPI1_MOSI<–>SPI3_MISO? Why connect MOSI and MISO? SPI1_MISO<–> Why doesn’t SPI3_MOSI connect? Do I need to update the pinmux setting by changing from dt to slave means I have to flash again? Can’t I do it in the following…

How to set to spi slave mode

Robotics & Edge Computing Jetson Systems Jetson Xavier NX

ShaneCCC September 29, 2020, 4:36am 5

This’s build by my tree. Remove the .txt and change it as executable file.

spidev_test.txt (69.1 KB)

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How to set to spi slave mode

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