PN532 i2c without IRQ connection?

[scotthauck]

Has anyone gotten the PN532 RFID chip to work via i2c without the IRQ connection?

The base Adafruit library https://github.com/adafruit/Adafruit-PN532 says for ESP32 it works only with the IRQ line connected (for other CPUs this isn't required), and I've seen that in action (with an IRQ line going I can read cards, trying to edit the library to do it without IRQ didn't work for me).

I've got an application where GPIOs are precious, and would REALLY like to just use the SCL and SDA wires. If someone has had success on this, please let me know, before I spend a chunk of time hacking the library on my own...

[rossgao]

I encountered a similar problem, and it seems that i2c cannot be shared with other devices. Have you finally solved it?