topic Re: NXP PN512 working with IRQ in LPC Microcontrollers

NXP PN512 working with IRQ

januszjonski — Mon, 21 Mar 2022 12:21:44 GMT

HI,

I want to use NxpRdLib in order to create mifare card reader using module PN512. All functions works fine under LPC1519JBD100e, but my program is blocked for 250 - 380 ms when I run function "status = phacDiscLoop_Run(&sDiscLoop, wEntryPoint);".

How can I configure PN512 to receive no-blocking communication. Is there any example.

Re: NXP PN512 working with IRQ

danielchen — Thu, 24 Mar 2022 03:44:00 GMT

It is hard to know the root cause from your description, you can trace into function phacDiscLoop_Run.

There is a Ex10 demo for MIFARE DESFire. It is under NDA.

Regards

Daniel

Re: NXP PN512 working with IRQ

januszjonski — Thu, 24 Mar 2022 06:50:39 GMT

None of examples is using IRQ line from PN512. Function phacDiscLoop_Run is waiting until all instruction are done. So you can't do anything else during this time. Maybe there is some example based on interrupts, but I can't find it.