Hi, as part of a side project I've been trying to play a wav file from an SD card out of Raspberry Pi Pico 2 over I2S. SD is successfully mounted and I2S is registered under /dev/audio/pcm0. But unfortunately when using nxplayer with the sound file (44.1K, 16 bit stereo WAV), pins allocated for I2S are still (no clock, no data, no sign of activity). The configuration used is raspberrypi- pico-2:spisd as it closely resembles the raspberrypi-pico:audiopack config that seems to be meant to support sound. However, the situation with the latter config and with the RPi Pico (RP2040) results in the same behavior.
Debugging sessions so far led me to the nxplayer_playthread not being able to allocate audio buffer with ALLOCBUFFER ioctl. Is someone working with RPi Pico and sound? Am I missing some important detail? Please let me know. Kind Regards Michal
