VoCore Forum

Hello

I'm Heejin Park and a master course student of Pusan National University in South Korea.

I'm developing vocore in my version.
(In attachments, image file)

But, in flashing kernel procedure, occur a problem.

Vocore show error message "kernel CRC check error".

I suspect that there is error because of fast flashing speed(spi).

How can I bootloader compile to low spi speed?


If you have better solution for my situation, send me your advice.

And I'm sorry for my lack of english.


Take care.

Best regards.

Heejin Park.

There is tons of possibility. Without sch and pcb I can do nothing

As Vonger says, many many possibilities.

You mention spi, are you doing an initial load to the flash chip or are you loading a new openwrt image?

This is how I write to the flash chip using flashrom. Flashrom on my PC communicates with the programmer (arduino uno) at 115200 baud and the process takes over an hour so the spi speed must be much slower than 115200. Make sure you hold the 5351 PORST low when writing the flash. I only write uboot this way.

If you already have uboot on the flash use the UART or Ethernet to load the openwrt image, they are much friendlier. The MTK uboot is able to do either.