Boot Problems, LEDs lit continuously
#11
(04-30-2018, 11:06 AM)Facecreator Wrote: Hello, I have now tried the ROCK64 read out serially. I use a FTDI FTD232 (This one) for this purpose. I have Linux installed on my Raspberry Pi. I also tried with Windows and Putty. Short on my approach:

1.) Connect Rx from the Rock64 (pin 10) to the Tx of the adapter
2.) Connect Tx from the Rock64 (pin 8) to the Rx of the adapter
3.) Connect ground together (pin 6)
4.) Plug adapter into USB port (LED on the adapter lights up)
5.) Open terminal and enter: "dmesg | tail -n 10"
6.) He tells me that the adapter is connected to ttyUSB0 (Screenshot)
7.) Then I enter: "sudo minicom -s -D / dev / ttyUSB0 -b 1500000 --color = on"
8.) Then set 1500000 8n1 in the settings and turn off flow control
9) Leave the config and it appears the surface, now I turn on the Rock64 and nothing happens except the 2 funny characters.
10.) Do I have to jump any pins?

That sounds right, except I have never used -s, and have never changed the flow control settings, especially since the serial connection isn't using the CTS/RTS pins so DOES need software flow control.

No pins need to be jumpered, serial should "just work"... But will only work if there is a image that the rock64 can boot from, as it has zero smarts itself. In a pinch, you could try the SPI flash image, which will only boot the rock64, and write a uboot loader to the spi flash, which means you should have something happening if you boot the rock64 without a emmc or SD card fitted. You'll know if it works if after 30 or so seconds the red and white leds start blinking.

It still doesn't explain why you are having trouble bootiing, but this image will also output to the serial, and will give somethinig else to work with...

https://github.com/ayufan-rock64/linux-b...k64.img.xz


Messages In This Thread
RE: Boot Problems, LEDs lit continuously - by pfeerick - 05-01-2018, 03:44 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Rock64 u-boot for eMMC Build Error mexicanflyer 0 77 09-18-2022, 02:29 PM
Last Post: mexicanflyer
  Boot from SPI first mjnck 0 595 12-31-2021, 11:23 AM
Last Post: mjnck
  rock64, compile problems "illegal instruction", "memory fault" -> ddr_333Mhz? klausfelix 0 1,015 07-02-2021, 03:13 PM
Last Post: klausfelix
  boot hdd usb3 philipe 1 1,785 01-27-2021, 02:12 PM
Last Post: tllim
  Rock64 v2 as Openmediavault server - buffers / shutdown problems helpmerock 2 2,648 12-29-2020, 09:46 AM
Last Post: helpmerock
  rock64, compile problems "illegal instruction", "memory fault" -> ddr_333Mhz? hunderteins 10 10,511 11-17-2020, 08:00 AM
Last Post: Johannes
  Libreelec Rock64 - 4GB no boot spiker15 3 3,104 11-02-2020, 12:36 AM
Last Post: wilsonYan
  Rock64 - boot helpmerock 2 2,495 10-08-2020, 01:29 PM
Last Post: helpmerock
  No boot up after power on Whoopsadaisy 4 4,038 09-26-2020, 05:14 PM
Last Post: simonsouth
Bug u-boot (forks) status mcerveny 14 10,538 08-27-2020, 01:44 PM
Last Post: globaltree

Forum Jump:


Users browsing this thread: 1 Guest(s)