4 Commits

Author	SHA1	Message	Date
Jeff Epler	bc14ed31f6	StateMachine.h: Add header for declaration of mcu_pin_obj_t typedef	2021-03-04 12:28:46 -06:00
Jeff Epler	ff62b0d2c0	StateMachine: Add pull up/down for inputs	2021-03-04 11:26:29 -06:00
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
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