Motor control using Imx8mm

[hsiddiquee]

Hello,

Our company is using imx8mm to make a device. There are bunch of processes going on in the imx processor. Like image processing, multiple motors (Mostly at different time), display, etc. For two specific motor control, we need to keep changing it's angle to specific degrees. One motor angle is track by potentiometer (may need ADC). 

Can you guys suggest, if we should use separate 8bit micro-controller for motor control or should we control it directly from imx8mm. 

Thank you

[igorpadykov]

Hi hsiddiquee

unfortunately i.MX8M Mini has not adc, for motor applications may be useful

GPT1 capture capability (measure phase difference between input signals),

example can be found in M4 SDK_EVK-MIMX8MM (..driver_examples/gpt/capture/ folder)

available on https://mcuxpresso.nxp.com/en/welcome

Best regards
igor

[MPUUser]

Hi,

Does iMX8MPLus also has this function?

GPT1 capture capability (measure phase difference between input signals).

How many independent input capture can the 8MPlus support?

I have 4 motors with optical encoder feedback. They can be single phase or 2 phase.

Can it support 4 x single phase? Or better still, 4 x 2 phase encoder inputs?

Thanks.