Hall sensor interrupt on tms320f28035

Dario Detomaso

Intellectual 945 points

Hi ,

I would develop a mode to control BLDC motor using hall sensor interrupt.

What could I see to implement an ISR linked to a change edge of hall sensors?

Best Regards,

Dario

over 11 years ago

0 Brett Larimore over 11 years ago

TI__Guru 57255 points

Hi Dario,

Often we'll only use one interrupt in our system and poll the status of GPIOs attached to hall sensors to reduce the complexity of the system.

However, you wanted to have hall sensors (or any other digital signal) generate an interrupt, one thing you can do is, configure the GPIOs connected to the sensors as external interrupts (XINT) sources via the GPIOXINTnSEL registers. See the F2802x Piccolo System Control and Interrupts User Guide (sprugl8) for more information.

Thank you,
Brett

0 Dario Detomaso over 11 years ago in reply to Brett Larimore

Intellectual 945 points

Hi Brett,

I want to implement a control of BLDC motor through interrupts of hall effect sensors.

Should I connect a sensor signal to the interface ECAP1 ?

Could you give me some advices ?

0 Brett Larimore over 11 years ago in reply to Dario Detomaso

TI__Guru 57255 points

Hi,

Yes, eCAP is another option (instead of using XINTs), however it may be worth noting that there is only one eCAP module on the F28035 device.

Thank you,
Brett

0 Dario Detomaso over 10 years ago in reply to Brett Larimore

Intellectual 945 points

Hi,

I managed to turn my BLDC motor using hall sensors interrupts.
In particular I have used external interrupts.
Now I would like to implemet the current control.
Which other interrupts could i use?

Thank you in advance,
Dario

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Hall sensor interrupt on tms320f28035