DSP280x interrupts

elenab

Hello,

I am working with DSP280x but i cannot manage in handling interrupts.

I am new to this work so please be clear and simple in your suggestions!

The problem is that i can compile my code with no errors but i do not know how to link my ISR function to the corresponding interrupt flag bit.

Could someone help me? Thanks

over 16 years ago

Jeff Stafford over 16 years ago

TI__Expert 4595 points

Elenab,

A great place to start is the example code for the 280x. These examples already have the interrupt structure defined. So you can load the code without any changes, put breakpoints within the ISRs and observe that they are working.

From that working position you can review how the interrupt keyword defines a function as an interrupt, how the peripheral interrupts are enabled, how the peripheral interrupt expansion (PIE) module is configured, and how the CPU group interrupts are configured (IFR, IER, INTM).

The user's guide that is key for this is the System Control and Interrupts Reference Guide (SPRU712).

Try out the example code, review the software and reference guide. This should give you a solid understanding.

Tim Love over 16 years ago in reply to Jeff Stafford

TI__Expert 5340 points

Elenab,

The F280x C/C++ Header Files and Peripheral Examples are a great place to start as they provide peripheral examples with the interrupts already configured as Jeff has described. No matter if you are using SPI, SCI, ADC, etc. this software package has interrupt examples. This is available at the following link:

http://focus.ti.com/mcu/docs/mcuprodmsptoolsw.tsp?sectionId=95&tabId=1222&familyId=916&toolTypeId=1#swtools

Regards,

Tim Love

elenab over 16 years ago in reply to Tim Love

Intellectual 440 points

Thank you very much!

Elena

C2000™︎ microcontrollers

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DSP280x interrupts