ballsystemlord Posted October 22, 2021 Share Posted October 22, 2021 Hi, I've already installed Armbian once before onto the SD card of my Rock PI S (Non-flash version). Before upgrading to Focal, I plugged it into my serial receiver in order to verify that I got the procedures correct so when I upgrade I'd get a console. I was glad I did that as I had forgotten I couldn't get screen(1) to work with my serial device as it can't send and receive data at the 1.5Mbs. I ended up using minicom(1). I downloaded the Focal Edge version of Armbian, verified the data with the ASC key, and wrote it to the Micro-SD card. I then booted it and the blue LED started blinking indicating an alive and working kernel. But I got no data over the serial console. I tried re-writting the image and reversing the RX and TX lines with no success. I then double-checked that my initial wiring was correct for my board and it was. I tried again without success. My procedure is as follows. 1: Plug in the serial adapter which is connected to the board. 2: Start minicom. 3: Plug in the SBCs power cable. How do I get a serial console on my Rock Pi S? Thanks! 0 Quote Link to comment Share on other sites More sharing options...
tparys Posted October 23, 2021 Share Posted October 23, 2021 1 - Did you disable hardware flow control on the serial port? Minicom enables it by default, and you won't get data via 3-wire 232 serial, unless you did. 2 - Are you using the right voltage level for your serial port? They might be 3.3V, 5V, or full RS232 (8-15V) ranges. 0 Quote Link to comment Share on other sites More sharing options...
ballsystemlord Posted October 24, 2021 Author Share Posted October 24, 2021 1: Flow control, both HW and SW, is disabled. 2: Considering it worked with one of the previous Armbian releases, yes I'm certain I am using the right voltage. Could the serial interface have been disabled by accident in the latest focal release? Or perhaps the serial port is a different set of pins now? I'm using the v1.2 PCB which uses different pins than the v1.0 board. See: https://wiki.radxa.com/RockpiS/dev/serial-console 0 Quote Link to comment Share on other sites More sharing options...
Solution Igor Posted October 24, 2021 Solution Share Posted October 24, 2021 56 minutes ago, ballsystemlord said: Or perhaps the serial port is a different set of pins now? Yes. It is clearly written on the download pages https://www.armbian.com/rockpi-s/ (Modern kernel serial console is on UART2) I have personally lost a week trying to fix this "small" problem and I will not repeat this ever again. Armbian is dropping official support for this hardware, images and upgrade will be no more ... Not your fault - we also made mistake trusting this vendor. You (anyone) can pick up and proceed with support to keep it at least on this level as now. 0 Quote Link to comment Share on other sites More sharing options...
ballsystemlord Posted October 24, 2021 Author Share Posted October 24, 2021 5 hours ago, Igor said: Armbian is dropping official support for this hardware, images and upgrade will be no more ... Not your fault - we also made mistake trusting this vendor. Why was it a mistake to trust the Rock Pi vendor? I ask because it seems to me that I'd need to know what's going on if I were to help support the project's efforts for this SBC. 0 Quote Link to comment Share on other sites More sharing options...
Armate Posted February 21, 2023 Share Posted February 21, 2023 I also want to know the answer for this question. 0 Quote Link to comment Share on other sites More sharing options...
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