quadrature decoder - interrupt on compare value

baye_4029466 · ‎Mar 15, 2019

Hi,

I'm using PSOC4 on my project.

I have a DC motor connected to a PWM (through H bridge) and the motor axle is connected to encoder that is counting the motor steps.

I want to stop a motor on exact place using the quadrature decoder peripheral.

I tried to configure the encoder to set an interrupt on specific value (not 0x0 or 0xFFFF) using the TCPWM_CNT1_CC register, but I don't get the desired interrupt.

Is it possible to get such an interrupt on quadrature decoder mode?

Thanks,

Barak.

Hari · ‎Mar 26, 2019

Hi

This method would work, That is setting the initial counter value to something other than 0x8000 to obtain interrupt at desired value.

If the program is simple, you can also try polling method by continuously monitoring the counter value. However, this will work only for programs without any heavy processing.

Thanks and regards

Harigovind

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quadrature decoder - interrupt on compare value

quadrature decoder - interrupt on compare value

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