Creating a null_IO driver

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Creating a null_IO driver

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MWMinor
Contributor V

Has anyone else tried to use the application note AN3902 to create a null_IO driver using CW10.6 and MQX4.1...?

I wanted to follow this example as a test prior to creating my own IO_driver but the version of CW in the example is clearly an old one. I wanted to do this to make sure I understood the process well enough, but clearly I don't.

Can anyone assist please..?

Thanks

Ken

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matthewkendall
Contributor V
Has anyone else tried to use the application note AN3902 to create a null_IO driver using CW10.6 and MQX4.1...?

I made an IO driver in MQX 4.0.1 following AN3902 and it is still working in 4.1. I don't recall anything particularly outdated in the App Note.

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MWMinor
Contributor V

Hi Matthew

Could be me - things were going ok until around step 12 - copying the files into the code warrior project where there appeared to be some differences. I have used the pdf supplied by Sol and managed to create a driver file so that part of the job's done.

Thanks for the comment though...

Ken

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soledad
NXP Employee
NXP Employee

Hi,

Thank you, I fixed the issue, could you please try again??

Regards


Sol

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MWMinor
Contributor V

Hi No problem and thanks for the fix, I can now down load the pdf. I'd like to understand why in step 11 and 12 you have to copy the new driver folder into the  project initially with copy files and folders selected, then delete it and re-copy with link to files and folders selected..?

Thanks again for your assistance.

Ken

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soledad
NXP Employee
NXP Employee

Hi Ken,

This is an error, in page 7 the step 11 should be

11) Select '' Link to files and folders'' and “MQX_ROOT_DIR”

Again thank you for your feedback

Regards Sol

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soledad
NXP Employee
NXP Employee

Hi Ken,

Please check the below link, and let me know if this helps!!

How to Make a new MQX Driver

Have a great day,
Sol

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MWMinor
Contributor V

Hi Sol

Many thanks for the reply, but I'm having trouble downloading the link to the pdf.

This is the message I get..

pastedImage_0.png

Could you please check the file is still accessible...??

Thanks for your support

Ken

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