Hi guys!

I have tried the RFID sample, which works OK. However, the speaker emits a noise when the RFID is functioning. I guess that's related somehow to i2c. RFID uses i2c, and the speaker also (I guess?). 2 questions here:

• can the 2 work in parallel? I.e. have RFID AND speaker? This is something that I'd probably need soon. They seem to share the same channel (i2c); so multiplexing is involved. So if the RFID is used non-stop, I fear that the speaker won't be able to work.
• if this is not possible, I'd guess that I need to somehow disable the speaker. But I didn't actually enable. So where does the noise come from?

Thanks a lot!
Cristian

PS: this is my second message; the first one got lost maybe in "moderation" because I had just signed up and the account not yet verified? Who knows.

Hi there,

I have ran the RFID sample on a M5Core. It works. However there is a speaker whine happening. I'm not sure exactly what is causing it. Have you got any hints?

Thanks!
Cristian