tasklet
Newbie level 1
Well, now I find myself in exactly the same problem as asked in this post:
I'm playing with S3C44B0X (ARM7TDMI core) jtag, and write some demo code to set / dump core registers by jtag. regdump works fine but there are some issue for regset: I write 0x12345678 into the core register, e.g. R3, but the R3 reading dumped out will be 0x45671234. But if I write 0x00 before write the real data into R3, the issue will be solved.
There is a App Note by Atmel referenced in the post, I'm sure I'm using the same jtag sequence as described in Page14 of the App Notes to write the core registers. I don't know if there are any undocumented tricks / problems for arm7tdmi jtag related to this issue.
If anyone has any advice / thoughts / etc. you will be appreciated. I have been fighting with this issue for more than two weeks.
If you need source code / schematic / etc. , just leave your e-mail and I will send it to you.
I'm playing with S3C44B0X (ARM7TDMI core) jtag, and write some demo code to set / dump core registers by jtag. regdump works fine but there are some issue for regset: I write 0x12345678 into the core register, e.g. R3, but the R3 reading dumped out will be 0x45671234. But if I write 0x00 before write the real data into R3, the issue will be solved.
There is a App Note by Atmel referenced in the post, I'm sure I'm using the same jtag sequence as described in Page14 of the App Notes to write the core registers. I don't know if there are any undocumented tricks / problems for arm7tdmi jtag related to this issue.
If anyone has any advice / thoughts / etc. you will be appreciated. I have been fighting with this issue for more than two weeks.
If you need source code / schematic / etc. , just leave your e-mail and I will send it to you.
