Difference between revisions of "Start Development"
From Rigol Homebrew Wiki
| Line 29: | Line 29: | ||
: Every subroutine that calls subroutines must start with LINK and end with UNLINK to save the return address to the stack. The blackfin CPU doesn't do that automatic. | : Every subroutine that calls subroutines must start with LINK and end with UNLINK to save the return address to the stack. The blackfin CPU doesn't do that automatic. | ||
| − | Example: | + | :Example: |
<pre> | <pre> | ||
sub: | sub: | ||
Revision as of 15:23, 22 December 2011
Sorry, not complete yet...
Download the Toolchain from https://github.com/krater/rigol-toolchain
and follow the instructions in the README file...
howto compile examples
links to blackfin prm
Pitfalls
- Alignment
- Every command must be word aligned. When you access the memory, word accesses must be word aligned, long word accesses must be long word aligned.
- Don't use the .align directive . It doesn't works with the toolchain. Use .byte directives to do that.
- Subroutines / Calls
- Every subroutine that calls subroutines must start with LINK and end with UNLINK to save the return address to the stack. The blackfin CPU doesn't do that automatic.
- Example:
sub: LINK 0x0 ... CALL sub2 ... UNLINK RTS
- STOP-Mode
- Switch your scope to the STOP-Mode if you don't need capturing during your software is working. Sometimes i got unpredictable crashs when the Device was in AUTO-Mode. Hope to find a reason for this thing soon.
