Connect GPS on UART_AO_A

[Guille.Helm]

Has anyone had the experience of being able to use a GPS on this board in GPIO pin 8 and 10 (UART_AO_A_TXD, UART_AO_A_RXD)? when I have the GPS connected it does not boot, but if I disconnect it it boots and when I connect it it works perfectly…

Thanks

[theophile]

Sounds like the u-boot console is on that UART and the device is interrupting the boot sequence. You could try the device on the other UART interface or disable the u-boot interrupt.

[Guille.Helm]

I have problems to enable another UART, the truth is that with Radxa it is not as versatile as I expected. Can you tell me how I can disable the u-boot interrupt?

[theophile]

Instruction of how to fix 2 seconds delay at boot and not working reboot

I was looking for environment that helps me to edit/compile U-boot loader to disable 2 seconds delay at boot time…Cuz I’m completely new to some kernel editing stuff. So I create it and sharing with you guys))) + Bonus is that now $ reboot stuck bug is fixed by created boot-loader and board can reboot as expected The Official instruction doesn’t work for me (there were many errors on different stages) but you should read it to understand the process and where most files and commands were …

[Guille.Helm]

I will try to do this…
Thanks…

[Guille.Helm]

I have problems with this last command “fastboot flash 0x200 /home/pol/fip/radxa-zero/u-boot.bin”, I don’t know if it’s because it’s directed to the eMMC and I use SD.
But I have writing error. I wanted to replace the file but it does not exist with that name in my operating system