circuitpython/ports/raspberrypi/supervisor
Scott Shawcroft 360475e266
Implement audiobusio and enhance PIO for it
This adds I2SOut and PDMIn support via PIO.

StateMachines can now:
 * read and read while writing
 * transfer in 1, 2 or 4 byte increments
 * init pins based on expected defaults automatically
 * be stopped and restarted
 * rxfifo can be cleared and rxstalls detected (good for tracking when
   the reading code isn't keeping up)

Fixes #4162
2021-02-23 15:50:00 -08:00
..
internal_flash_root_pointers.h Add initial RP2040 support 2021-01-20 19:16:56 -08:00
internal_flash.c More parens 2021-02-22 18:35:09 -08:00
internal_flash.h Add initial RP2040 support 2021-01-20 19:16:56 -08:00
port.c Implement audiobusio and enhance PIO for it 2021-02-23 15:50:00 -08:00
rp2_cpu.s Add initial RP2040 support 2021-01-20 19:16:56 -08:00
usb.c Switch to upstream TinyUSB 2021-01-21 11:33:13 -08:00