tagPresent with default timeout takes about 1000ms to complete
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I'm not sure if this relates to the "shouldn't block" issue but I discovered nfc.tagPresent() takes about a second to complete, delaying my run loop.
I guess my question is, should I expect it to take a second, which appears to block? What do you think is responsible for the delay and what do you recommend I pursue to overcome it?
Note, I am using the Grove NFC module (not the shield version). It uses UART by default. Though it says you can modify the board to use I2C, I (and others apparently) cannot get that to work. In order to get this NFC library to work, I'm using this software serial, PN532_SWHSU PN532Interface I found. My uC is a Huzzah ESP8266. Everything is actually working, it's just the delay I'm wondering about.
Thank you for your awesome library!
OK, so I tested passing it 250 and now it's faster so I think this is a duplicate of the shouldn't block issue except in that issue it's apparently fixed yet the problem persists for me. Is it because I'm using the software serial interface?