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+--- Thread: How to Write an Image to the eMMC Module Tutorial (/showthread.php?tid=4924)
RE: How to Write an Image to the eMMC Module Tutorial - jl_678 - 08-15-2017
Mark, excellent. Thank you.
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RE: How to Write an Image to the eMMC Module Tutorial - Lexstar - 08-15-2017
(08-15-2017, 12:05 PM)MarkHaysHarris777 Wrote: I also have ported ayufan's script to the rock64 -- rock64_install_to_emmc, which further simplifies things by allowing the user to select the system and version, as well automatically generating the curl file; very nice.
Does the script automatically interrupt the uboot timer or is it just for everything after step 6?
RE: How to Write an Image to the eMMC Module Tutorial - MarkHaysHarris777 - 08-15-2017
(08-15-2017, 02:13 PM)Lexstar Wrote:(08-15-2017, 12:05 PM)MarkHaysHarris777 Wrote: I also have ported ayufan's script to the rock64 -- rock64_install_to_emmc, which further simplifies things by allowing the user to select the system and version, as well automatically generating the curl file; very nice.
Does the script automatically interrupt the uboot timer or is it just for everything after step 6?
The script helps only after the SD is fully booted; well, its a gnu+linux bash script, it doesn't work at boot-up. Interrupting uboot is manual, based on the feedback received on the serial console alone.
RE: How to Write an Image to the eMMC Module Tutorial - MarkHaysHarris777 - 08-15-2017
I have updated this thread with the information from this link:
RE: How to Write an Image to the eMMC Module Tutorial - jl_678 - 08-16-2017
Would you see the same output from a monitor if you do not have a serial cable? I am just wondering whether you can get away with that approach.
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RE: How to Write an Image to the eMMC Module Tutorial - fire219 - 08-16-2017
(08-16-2017, 06:32 AM)jl_678 Wrote: Would you see the same output from a monitor if you do not have a serial cable? I am just wondering whether you can get away with that approach.
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From the guide (with emphasis):
MarkHaysHarris777 Wrote: The serial console is very important because the normal display does not show boot-up messages!
Technically you could try to time it blind, but unless you already know how the boot output over serial looks you are unlikely to get it right.
RE: How to Write an Image to the eMMC Module Tutorial - jl_678 - 08-16-2017
Sorry, I read it too fast. Thank you.
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RE: How to Write an Image to the eMMC Module Tutorial - hirot78 - 08-16-2017
(08-16-2017, 08:28 AM)fire219 Wrote: Technically you could try to time it blind, but unless you already know how the boot output over serial looks you are unlikely to get it right.
Yesterday I tried to it blind.
When I removed the jumper 3 seconds after turning on the power, writing the image succeeded.
However, this method may be dangerous. Then I will try to it by using a serial adapter (CP2104) tonight.
RE: How to Write an Image to the eMMC Module Tutorial - fire219 - 08-17-2017
(08-16-2017, 11:47 PM)hirot78 Wrote:(08-16-2017, 08:28 AM)fire219 Wrote: Technically you could try to time it blind, but unless you already know how the boot output over serial looks you are unlikely to get it right.
Yesterday I tried to it blind.
When I removed the jumper 3 seconds after turning on the power, writing the image succeeded.
However, this method may be dangerous. Then I will try to it by using a serial adapter (CP2104) tonight.
Well done. It's definitely not impossible to do, it's just a bit difficult.
Also, welcome to the forums.
RE: How to Write an Image to the eMMC Module Tutorial - tarlo766 - 08-30-2017
Experienced IT guy here, but noob to SBC. I just wanted to make sure I got this right.
Do I need a serial terminal to install Android to the eMMC or just to install linux to the eMMC? (per fire219 on 08-15-2017, 02:05 PM).
If so does the CP2102 module USB to 3.3V TTL referenced in the tutorial require soldering to the rock64?
if so are their guides for it? Thanks for the support.