I.MX RT BLDC three phase hall XOR input capture

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I.MX RT BLDC three phase hall XOR input capture

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Loadd
Contributor II

is there a hardware at mimxrt1052 i can xor three phase hall  and capture this siganal.

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jeremyzhou
NXP Employee
NXP Employee

Hi,
Thanks for your reply.
After further checking, it seems that it's unavailable to assign the external pin to the AOI input via the XBARB module.
So in my opinion, it needs to add an external logic device to handle this.
Have a great day,
TIC

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jeremyzhou
NXP Employee
NXP Employee

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1)Is there hardware at mimxrt1052 i can xor three phase hall and capture this signal.
-- To provide the fastest possible support, I'd highly recommend you to use the And-Or-Inverter (AOI) module to implement it, and please learn detailed information about the module by going through Chapter 62 And-Or-Inverter (AOI) in the RM.
Have a great day,
TIC

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Loadd
Contributor II

Thank you for idea.  but i have tried AOI already.  i cannot connect AOI input to any external pin directly.  when i configure AOI , its input can just route to some peripheral's out .  

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jeremyzhou
NXP Employee
NXP Employee

Hi,
Thanks for your reply.
In my opinion, to implement your application, you should not only assign the external pin to the AOI input but also assign the processed AOI output signal to the external pin.
And the XBAR module is able to do it.
Have a great day,
TIC

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Loadd
Contributor II

微信图片_20210310173518.png

Thank you for reply. I can use XBAR to map AOI out to where I want.   But for AOI input, it can not be mapped from xbar direactly.   I don't see which one of selection i can use to map AOI input to an external pin. The only one i see with xbar index, is ADC_ETC_XBAR0_COCO0, but how can i connected this signal to an external pin.

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1,757 Views
jeremyzhou
NXP Employee
NXP Employee

Hi,
Thanks for your reply.
After further checking, it seems that it's unavailable to assign the external pin to the AOI input via the XBARB module.
So in my opinion, it needs to add an external logic device to handle this.
Have a great day,
TIC

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Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

 

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
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1,750 Views
Loadd
Contributor II

Thanks a lot. Hope further series will support such application.

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