I wouldn’t use putty. Remember, when the jumper are set up in “USB Boot Mode” the processor’s bootrom is looking for packets over the USB interface, so it won’t automaticlly load anything till your run ./imx_usb_loader/imx_usb to send the correct files.
Regards,
Hello Sir,
I got back into the u-boot cli again. I performed some other tasks. I think the board is getting cross-compiled now. I am installing Linux and Debian will be done soon after.
Seth
P.S. I will reply here once everything is done. Thank you for your time, sir. I appreciate the time and effort.
PS, I’ve updated the directions to use the generic v5.0.x based kernel… Ethernet still doesn’t work, but it’s a full generic kernel…
Regards,
Hello Sir,
I saw that updated kernel. I think the server IP was not set. I am currently going to review what to read and get to it in time. This may have something to do w/ the Ethernet not coming up.
Oh and sir, should I listen to the section of Install Kernel and Root File System on the wiki? I saw it was under the SD Card section.
Seth
@silver2row, for every reference of “SD Card” assume, USB mounted eMMC thru U-Boot…
I need to find a better noun to define that section for this “special” mounted drive.
Regards,
Hello,
Thank you sir. I skipped that section.
Seth
P.S. Updates are good.
Hello Sir…using lsblk, I see nothing on my printout to the terminal that would signify a disk.
I may have forgotten to build the 5.0.x kernel again before going into u-boot cli. I will test this case. Hey sir, thank you again for putting in support for this project. Even though the kernel and a generic Linux is not on the board yet, I appreciate you updating the kernel.
I am building the kernel now (again). It takes a bit of time but it will be worth it once it is completed.
…
Should I call it mmcblk0 on a whim?
Seth
@silver2row, do you have both usb connectors plugged into your pc? The usb console for the serial console and the usb type-c for power and “usb mass storage access” thru u-boot?
Regards,
Yes Sir,
I had both cables attached. I have been consistently incorrect over and over. Under tio, my USB cable states, on the terminal, Disconnected and Connected if I plug it in or unplug it.
I was able to get to u-boot by way of /dev/ttyUSB0. I cannot get to that point any longer. I received some error codes and started from scratch. I will update you if you are interested in the error codes.
Seth
P.S. I guess the issue is that I cannot find out which of my connections are indeed the serial port on this board.
Hello Sir,
What was I thinking? I just wanted this board to work. To tell you the truth, each command worked w/ little to no alteration. I just could not figure out the small alters needing to be made until I read the scripts closely.
…
Seth
P.S. I will let you know tomorrow if the board boots. Everything seemed A-Okay w/out any errors. Sorry. One final thing before this pork gets cut up:
ssh: connect to host 192.168.x.xx port 22: No route to host@silver2row, okay i got network working on v4.20.x and updated the wiki to use that kernel… Something is broken in v5.0.x so we will deal with that later…
debian@arm:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=113 time=44.8 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=113 time=40.4 ms
^C
--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 40.464/42.663/44.862/2.199 ms
debian@arm:~$ uname -r
4.20.1-armv7-lpae-x2.1
Regards,
Yes sir…I will get on it later today. Thank you for the update. I will reply once things are working w/ the v4.20.x kernel. Rebuild!
Seth
Hello Sir,
One thing I noticed…
I cannot get into u-boot in USB boot mode. I can, I used to be able to, get into u-boot via eMMC boot mode.
…
I am building the new kernel now. I will update you later once things have been done and done again.
Seth
P.S. Just for reference, I have both USB-C plugged in and the other USB (I guess micro) cable plugged in at the same time when performing both USB boot mode and eMMC boot mode.
@silver2row, once you get a newer version of u-boot booting on the eMMC, you really don’t ever have to force USB boot mode, just mount the drive thru u-boot, then just update u-boot/kernel/etc when you need to update pieces of it.
Regards,
Yes Sir,
I figured that much, sort of. Anyway…please view this photo when you have time. It is of lsblk. Which item do you think is the actual PICO board?
…
Seth
P.S. Any response is much appreciated. I thought it would be sr0 but I can only get into u-boot w/ USB0 for some reason.
@silver2row, based on the lsusb output, the PICO-PI-IMX7 is in USB Boot Mode… Have you transferred the SPL/u-boot.img binaries via imx_usb to get u-boot up and running?
Regards,
Hello Sir,
No sir, I could not get to u-boot via those commands in USB Boot Mode yet for some reason.
I could only get to u-boot w/ those commands in eMMC Boot Mode. Also, something to note.
My LED on the Serial Debug Cable on the board (PICO) side, lit up during the CC from yesterday. Today, I have not figured out how to get that LED back lit.
Seth
P.S. Here is the board: I could not show the LEDs b/c of the flash of the phone but only two LEDs near the USB-C cable are showing.
@silver2row this led? 
Those two led’s only blink when there is tx/rx information being sent over the serial port.
Regards,
Yes Sir,
Those two do not blink on my end. One, the other one, just stays lit.
Seth
P.S. It stays lit while, well yesterday it did, I perform tasks. Today, the LED is out of commission. I have a Rev. B1.
I don’t believe your board is out of commission, verify that your serial terminal program is actually using the connected serial port. TIO for example will auto-connect/disconnect when the usb cable is plugged/unplugged. Some serial programs just lock up when they lose the serial connection.
Regards,
