[ECOS] Arm ROM build help for beginner
Fri May 23 01:50:00 GMT 2003
> I have built an application that has been tested with the RAM start up. I
> now want to build it as a ROM start-up and actually but it on my e7t board.
> I have built the template as ROM start-up (instead of RAM as before). But
> there are little help on what to do next. Do I just compile my application
> against the install/include and lib?
You start with that, yes...
> How does the ROM image get generated?
The e7t is awkward. What you have to do is look at how ROM RedBoot is
built. Look at hal/arm/e7t/current/cdl/hal_arm_e7t.cdl near the end. Yes
it's a pain! The "ncs" mentioned throughout means "no checksum". To keep
Angel happy you need a checksum though, hence the rigmarole.
> Also, I use the cyg_io_read to read from COM0 and I am a bit confused. By
> using the function cyg_io_read does the COM port wait for information to
> arrive, blocking the program until all data have been sent?
By default yes, although there is a non-blocking mode if you prefer (or
you can query the buffer usage with CYG_IO_GET_CONFIG_SERIAL_BUFFER_INFO).
> This e-mail and any files transmitted with it are confidential
Oh no it isn't. This is a public mailing list with public archives.
eCosCentric http://www.eCosCentric.com/ The eCos and RedBoot experts
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