Dear all,
If I did the PCB by myself and put all components onto the board by myself, how can I burn bootloader into Flash?JTAG hardware is enough?
Thanks,
- posted
19 years ago
how can I burn bootloader into Flash?Thanks
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- posted
19 years ago
"Lee" skrev i en meddelelse news: snipped-for-privacy@posting.google.com...
Please give us some more information about the Flash and the PCB. Are there any homepage with the PCB and/or the design?
Cheers Rune Christensen
-- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.746 / Virus Database: 498 - Release Date: 31-08-2004
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- posted
19 years ago
No, the RCA1802 does not have JTAG interface.... .... or perhaps you were using a different processor?
Cheers, Alf
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- posted
19 years ago
Possibly. Have a look at the manual of the controller in question. It may or may not have JTAG enabled at power up.
Rene
-- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net
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- posted
19 years ago
Depends on which chip you are using. The AT91 ARM7s need a JTAG interface unless you have a combo chip with internal flash. They get delivered with preprogrammed flash.
The AT91RM9200 has a cool bootrom which will check if the flash is programmed and if so, boot from the flash otherwise it will establish an X-Modem communication on the debug UART or Device Firmware Upgrade via USB.
Both method will only require a standard PC and a standard serial cable. No JTAG ICE needed.
-- Best Regards Ulf at atmel dot com These comments are intended to be my own opinion and they may, or may not be shared by my employer, Atmel Sweden. "Lee" skrev i meddelandet news:5c3c88bc.0409021939.876f829@posting.google.com... > Dear all, > > If I did the PCB by myself and put all components onto the board by > myself, how can I burn bootloader into Flash?JTAG hardware is enough? > > Thanks,
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- posted
19 years ago
Are you sure it doesn't (didn't)?
If you pulse each of the EFn lines low in sequence at the rhythm of a close encounter of the third kind and then wait until the Q lines goes high/low and if you pulse the TPA line high when the TPB is high that will put the RCA1802 in the JTAG download mode. :-D
I swear this scheme was published on RCA's web site ;-)
Mostafa
-- ---------------------------------------- Mostafa Kassem M Dot Kassem At ieee Dot org ---------------------------------------