55 Commits

Author	SHA1	Message	Date
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
Jason Nichols	ae262cde55	Fix maximum PIO instructions	2021-02-06 10:54:25 -05:00
Scott Shawcroft	b47fd08b20	copy editing	2021-01-21 10:17:40 -08:00
Scott Shawcroft	b0f7fd933f	type fix	2021-01-20 23:33:00 -08:00
Scott Shawcroft	733094aead	Add initial RP2040 support ... The RP2040 is new microcontroller from Raspberry Pi that features two Cortex M0s and eight PIO state machines that are good for crunching lots of data. It has 264k RAM and a built in UF2 bootloader too. Datasheet: https://pico.raspberrypi.org/files/rp2040_datasheet.pdf	2021-01-20 19:16:56 -08:00