Hi, I want to see the u boot steps of Udoo neo board on the serial terminal available on A9. For this I have followed the below link. I am unable to see any data on the A9 serial port. http://gmacario.github.io/howto/udo...08/connecting-to-udoo-neo-serial-console.html Thank You
Hi, I followed the above link but still no luck. I am using USB-TTL which works fine, tested by shorting TX & RX pin. On my USB-TTL I can see TX led blinking on hitting keys from my PC but no RX led blink.I have tried on HyperTerminal.
Did you try to switch the TX/RX wires? Neo UART1_TX should be connected to USB-TTL-RX and UART1_RX should be connected to USB-TTL-TX And also double check the protocol. Perhaps try it with Putty instead of Hyperterminal. I had no problems with connecting an USB-TTL to the UART1
Is it possible to just have u-boot on the sdcard? I followed the instructions at https://github.com/UDOOboard/uboot-imx for the neo (2015.04.imx branch) 1. wiped a micro sd card and formated it to be fat32 with gparted. 2. then unmounted it (it is in a usb to uSD adapter) 3. used dd to write the SPL and u-boot.img files to the sd card 4. inserted the sd card into the neo 5. connected the uart1 tx/rx/gnd to my usb/serial dongle (tried with a prolific one and a cypress based one) 6. opened putty in windows and connected to the COM port with 115200 baud 7. powered the neo up I don't see any output, I expected to see something like http://www.denx.de/wiki/view/DULG/UBootPowerOn where you can see the uboot prompt. I have tried swapping tx/rx just in case too and still nothing. I perused through the menuconfig of the uboot imx and didn't see anything really pertaining to the console. Is there a config somewhere I can set to just get to the uboot console with this version? I don't want to boot to any OS yet. Any help here would be appreciated, thanks.
