Open qwertychouskie opened 2 years ago
The hands free protocol is not supported. But maybe there is a way around it with A2DP, depending on your application,
What is the microphone in this case and why does it need to go to a phone? I'm not sure I understand what you are trying to do
Maybe my wording is a bit weird. Basically I just want to fully support hands-free calling (phone audio goes over car speakers, microphone is mounted in dash). Probable will use https://www.adafruit.com/product/3421 for mic and https://www.mouser.com/ProductDetail/Adafruit/3678?qs=W0yvOO0ixfEeEgy1riJcig%3D%3D for audio output to car's audio channels.
More details here: https://www.reddit.com/r/arduino/comments/v591g8/looking_for_help_with_car_stereo_bluetooth_upgrade/
Looks like ESP-IDF supports both but as far as I know the Arduino library doesn't
https://github.com/espressif/esp-adf/tree/master/examples%2Fget-started%2Fpipeline_a2dp_sink_and_hfp
both the mic and DAC are great, I use them all the time. However, i don't really know where to start with the hands-free stuff. I naively assumed the a2dp protocol would stream the phone audio(during a phone call) to my Bluetooth speaker and it didn't. Hopefully, the example from @lmore377 will be of more help
Thanks for the pointers! Quick question, does the ESP32-PICO-KIT (https://www.mouser.com/ProductDetail/356-ESP32-PICO-KIT) recommended in the README support multiple I2S devices? I would hate to order everything just to find out that I can't hook up both the mic and audio output.
yup, there are 2 I2S ports that support different sample rates between devices.
Perhaps a little off topic to the code side of things, but any chance I could get a quick lookover of my Mouser parts list before I order to make sure I'm not missing anything/doing something stupid? Cart_Jun06_0945PM.pdf
This is the interfacing circuit: https://stuartschmitt.com/e_and_c_bus/interface.html
Thanks so much for all the help so far!
I may be wrong, but I think you're looking for the HSP profile, which is audio in/out, the HFP is used for dial/answer commands. At least, my car that has built in bluetooth connectivity (but not A2DP, why???? sigh) connects to both HFP and HSP.
Is there anything new? As far as I can see this function only works with the esp framework and not with Arduino right?
My use case for this library is to upgrade my car's stereo system with Bluetooth. What would be the best way to go about handling routing a microphone input back to the phone?