i'm building an amplifier that can play sound over bluetooth. I intend to use the nrf52832 to send i2s data to my dsp chip. based on the loopback example, i have an idea on how to send audio data to the dsp chip using i2s. I need help in figuring out the rest. basically i want to know how to get the nrf52832 to receive audio over bluetooth, from something like a phone.