I/O configure

[lihai]

LPC1788 when using ulink2 debug, all I/O output H level, can I configure to output Low level， and how to configure it.?

[jeremyzhou]

Hi Li Hai,

Thank you for your interest in NXP Semiconductor products and 

for the opportunity to serve you.

The default configuration of GPIO is persevere, would make them output high level.

Have a great day,

TIC

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[lihai]

Thank you, Mr jeremyzhou

Sorry I reply so late, thank you very much for your help. I know how to initial the Pin mode. But when I use keil4 download .hex file to Flash, all I/O output high level. Infact i need low level. so when download .hex file, can output low level?  

Have a great day!

[jeremyzhou]

Hi Li Hai,

Thanks your reply.

I'm afraid that default setting of I/O is impossible to change.

Have a great day,

TIC

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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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[lihai]

Hi jeremyzhou

    Thank you！In that case, I need redesigned my circuit. 

Have a great day.