PICO_AUDIO_PWM_R_PIO_SM fixup (#93)

Use joined FIFO mode in audio_i2s.pio (#75)

As state machine is output only it is possible to use joined FIFO mode.
It allows more jitter(reaction time to DMA complete event when using only one DMA channel) on producer side of FIFO.

Use joined FIFO mode in audio_i2s.pio (#75)

As state machine is output only it is possible to use joined FIFO mode.
It allows more jitter(reaction time to DMA complete event when using only one DMA channel) on producer side of FIFO.

RP2350 and SDK 2.0.0 changes

Merge branch 'master' into develop

remove lwip library in favor of pico_lwip which is now in the SDK

pick up new version of pico_sdk_import.cmake - only really relevant t…

…o optimize git download of pico-sdk

Add PICO_SCANVIDEO_SCANLINE_RELEASE_FUNCTION for callback when scanli…

…nes are available (non host only)

move setting of PICO_EXTEAS_PATH to correct place to work for standal…

…one builds