CCS/AM3354: Absolute, well-defined integer value expected error message.

zemin shan

Intellectual 490 points

Part Number: AM3354

Tool/software: Code Composer Studio

Hello

Since I write the code in assembler

IF :DEF:MixPremption

LDRB R4,[R2,#1]

ELSE

LDRB R4, [R2, #1]

I got the two error message 'Illegal mnemonic specified' in IF and ELSE,

why?

over 5 years ago

0 George Mock over 5 years ago

TI__Guru**** 253010 points

I presume you use the assembler from the TI ARM toolchain.

All ARM assemblers support the same syntax for the instructions such as LDRB. But the syntax for the directives is different. In the TI ARM assembler, for instance, all the directives begin with the dot character. For example .if and .else. Please search the TI ARM assembly tools manual for the chapter titled Assembler Directives.

Thanks and regards,

-George

0 zemin shan over 5 years ago in reply to George Mock

Intellectual 490 points

thanks for your reply George, but which symbol can I use to replace the character DEF?

What should I write the code in TI assembler to replace the sentence "IF DEF: MIXPREEMPTION" ?

Best Regards

Jack

0 zemin shan over 5 years ago in reply to George Mock

Intellectual 490 points

in addition

I want to inquire that can I get the demo which show me how to use the chip AM3354?

For example, if I want to write a simple code to use pwm or gpio function, do we have

the code show me how to use this?

Best regards

Jack

0 George Mock over 5 years ago in reply to zemin shan

TI__Guru**** 253010 points

zemin shan said:
What should I write the code in TI assembler to replace the sentence "IF DEF: MIXPREEMPTION" ?

Please search the TI ARM assembly tools manual for the sub-chapter titled Defining Symbolic Constants. Look at the examples that use the operator $$isdefed. You need to do something similar.

Thanks and regards,

-George

0 George Mock over 5 years ago in reply to zemin shan

TI__Guru**** 253010 points

zemin shan said:
I want to inquire that can I get the demo which show me how to use the chip AM3354?

Please start with the Processor SDK for AM335x Sitara Processors - Linux and TI-RTOS support. I am not an expert on this software development kit. If you have further questions, please post them in the Processors Forum.

Thanks and regards,

-George

Code Composer Studio™︎

Code Composer Studio forum

CCS/AM3354: Absolute, well-defined integer value expected error message.