On chip boot ROM decides hid or usb mode?

maheshkumarkoda — Fri, 13 Nov 2015 13:37:52 GMT

Hello,

Recently I started working with i.MX6 Quadcore, I am trying to flash Bootloader.

I am getting an error like this ''waiting for u-boot serial console at COM4''.

So, I thought there will be either a problem with U-boot or with COM port (COM4 in my case).

To check U-boot problem - i tried flashing U-boot files (.bin & .uimage files) using MfgTool and the flash is successful.

Here I found while flashing using MfgTool the USB is in HID mode(Human Interface Device).

So I'm suspecting a problem with COM port, when i checked ref doc i found Boot ROM puts serial downloader into HID mode to flash.

My question is how can i put serial downloader into COM mode instead of HID mode?

Please help asap.

Thanks inadvance.

Re: On chip boot ROM decides hid or usb mode?

igorpadykov — Sat, 14 Nov 2015 01:08:05 GMT

Hi Mahesh

iROM can not change to "COM mode", because its behaviour is hardcoded,

can not be changed.

Best regards

igor

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