TMS320F280049: Question about bp_16 and bp_32

Janet Shen

Expert 7795 points

Part Number: TMS320F280049

Dear Champs,

Help customer post the problem, his problem as below:

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I have a question about bp_16 and bp_32 declaration as below.

// The following data types are for use with byte addressable peripherals.

// See compiler documentation on the byte_peripheral type attribute.

#ifndef __TMS320C28XX_CLA__

typedef unsigned int bp_16 __attribute__((byte_peripheral));

typedef unsigned long bp_32 __attribute__((byte_peripheral));

#endif

Currently, these definition are used for CAN registers.

Now I would like to use CLA feature.

The bp_16 and bp_32 become undefine.

Could you please provide the solution as soon as possible? Thank you.

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If you have any suggestion, please feel free to let us know.

Thanks a lot.

over 8 years ago

0 George Mock over 8 years ago

TI__Guru**** 253480 points

The type attribute byte_peripheral is not supported by the CLA compiler.

Janet Shen said:
Could you please provide the solution as soon as possible? Thank you.

Unfortunately, the CLA compiler has no feature which supports accessing byte addressable peripherals.

Thanks and regards,

-George

0 Johnson Tsu over 8 years ago in reply to George Mock

Prodigy 160 points

Dear George,

Based on data sheet, CPU can access byte addressable peripherals during CLA enable.

Why does CCS compiler fail to retain CPU features when the CLA function is activated?

0 Janet Shen over 8 years ago in reply to Johnson Tsu

TI__Expert 7795 points

Dear Johnson,

Could you kindly provide error message to us?
As George said, CLA do not support byte_peripheral.
Although your function run in C28x but it is CLA function, it still doesn't work.
Thanks a lot.

0 Janet Shen over 8 years ago in reply to George Mock

TI__Expert 7795 points

Dear George,

Thanks for your reminder.
I have found more detail on compiler user guide and will discuss it with customer.
Thanks a lot.

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TMS320F280049: Question about bp_16 and bp_32