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Hi, I use Analog Device sample project 21k/ez-kits/21065l/demos/plunk that works properly using serial port. However, when I generate an ldr file and use a FLASH memory (AM29F040B), there seems to be no activity (I changed the JP4 to A18 as indicated in the manual). Any suggestion as to what could be wrong is very appriciated. Thanks |
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EZ Lite 21065l EPROM Problem
Started by ●July 8, 2003
Reply by ●July 8, 20032003-07-08
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On Tue, 8 Jul 2003, vahid_meghdadi wrote: > I use Analog Device sample project 21k/ez-kits/21065l/demos/plunk that > works properly using serial port. However, when I generate an ldr > file and use a FLASH memory (AM29F040B), there seems to be no activity > (I changed the JP4 to A18 as indicated in the manual). > Any suggestion as to what could be wrong is very appriciated. How does your processor boot normally? If you're booting from flash, is your program being loaded into the first 256 words? Once you have reburned the flash, can you reboot with the demo? Put a 'scope on the flash CS line and see if it really is being accessed when you boot. check the boot lines are set for boot from rom. There are a lot of things that can go wrong, you need to pick them off and eliminate what isn't the problem before you find out what the real problem is! Patience, persistence, truth, Dr. mike |
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Reply by ●July 9, 20032003-07-09
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Dear DR. Mike, There is no signal on CS pin of the Flash. I am really tired working with serial port, I will receive an emulator very soon. I hope it works better. Thank you for your help. Vahid --- In , Mike Rosing <eresrch@e...> wrote: > On Tue, 8 Jul 2003, vahid_meghdadi wrote: > > > I use Analog Device sample project 21k/ez- kits/21065l/demos/plunk that > > works properly using serial port. However, when I generate an ldr > > file and use a FLASH memory (AM29F040B), there seems to be no activity > > (I changed the JP4 to A18 as indicated in the manual). > > Any suggestion as to what could be wrong is very appriciated. > > How does your processor boot normally? If you're booting from flash, > is your program being loaded into the first 256 words? Once you have > reburned the flash, can you reboot with the demo? > > Put a 'scope on the flash CS line and see if it really is being accessed > when you boot. check the boot lines are set for boot from rom. There > are a lot of things that can go wrong, you need to pick them off and > eliminate what isn't the problem before you find out what the real problem > is! > > Patience, persistence, truth, > Dr. mike |
