AM180x interrupt handling

Thodin

Other Parts Discussed in Thread: AM1808

Hello. I use evaluation board with AM1808. Board Support Library has no example with interrupt handling. Can somebody help me with writing the first interrupt handler for this processor?

I have read AINTC chapter in SPRUGU4 but I still have many questions.

How to initialize stacks for all interrupt modes?

How to map interrupt routines to interrupt vectors?

ARM Optimizing C/C++ Compiler v4.6 user's Guide contains only example for ARM v4.

over 15 years ago

0 Mariana over 15 years ago

TI__Mastermind 24340 points

Hi Thodin,

Our support for AM18x for now is mainly Linux, that is why you do not see many examples for non-Linux software.

For documentation about AM1808, please see the product folder:

http://focus.ti.com/docs/prod/folders/print/am1808.html

For example, find information at:

AM1808 ARM Microprocessor System Reference Guide

For OS independent code we can recommend a third party if you wish.

Also, please search the forums as some customers have been collaborating:

http://e2e.ti.com/support/dsp/omap_applications_processors/f/42/p/30196/105277.aspx#105277

0 Thodin over 15 years ago in reply to Mariana

Intellectual 300 points

Thank you, Mariana, you helped me. Interrupts are working.

I had some problems with understanding "CMRn" register in datasheet and also "HPIVR" register in this link

http://e2e.ti.com/support/dsp/omap_applications_processors/f/42/p/30196/105277.aspx#105277. In the datasheet this register named "HIPVR".

I still have a problem with printing through JTAG when interrupts from timer are enabled. printf() doesn't work properly in this case.

I also have a question about C liblary sources for this board. Where I can find them? The evaluation board manufacturer wrote me that they got this library from TI.

0 Mariana over 15 years ago in reply to Thodin

TI__Mastermind 24340 points

Thodin said:
I also have a question about C liblary sources for this board. Where I can find them? The evaluation board manufacturer wrote me that they got this library from TI.

Not sure if I understand what you are asking, but if you want the RTS (C Run-time support library) used in the BSL projects, they are inside the code generation tools.

If you are compiling the BSL, you already have them. For CCSv4, should be at:

C:\Program Files\Texas Instruments2\ccsv4\tools\compiler\tms470\lib

you can see the source code by extracting rtssrc.zip

0 Thodin over 15 years ago in reply to Mariana

Intellectual 300 points

Thank you, Mariana.

Processors

Processors forum

AM180x interrupt handling