Rewrite the I2S code from scratch to eliminate the dependence on the
pico-extras implementation and to support I2S input as well.
8-bit, 16-bit, 24-bit, and 32-bit words are supported.
Multiple I2S ports are allowed (theoretically up to 6 because
2 DMA channels are required per port).
I2S input and I2S output are supported.
Add input example
Fixes#535Fixes#99Fixes#562
Using all the work from @hfellner and others, add FreeRTOS
SMP support.
Allow idling cores through the FreeRTOS FIFO queue to
allow for file system and EEPROM support.
Make delay a weak function so FreeRTOS can override.
Add cycle count support under FreeRTOS using a PIO SM.
Use a task-based approach for handling the USB periodic work
instead of the IRQ-based one in the main core.
Set 8 prio levels so it fits in 3 bits nicely (0..7).
I receive mails weekly asking how to use `SoftwareSerial` on this core.
Avoid the issue by including a simple wrapper class around `SerialPIO`
which gives the proper class name and constructor parameters.
Note that inverted mode is not supported.
Fixes#472
Instead of using interrupts, explicitly call the IRQ handler dueing Serial
read/peek/available calls.
Add to keywords.txt for syntax hilighting.
Add poll calls in the SerialUART::write-like calls (write,
flush, etc.)
Really remove division from IRQ routines/
Adds support to the core for PIO-based, software-created UARTs, up to 8 (the number of PIO state machines) possible.
By using a custom program on the PIO state machines, it allows for very high bit rates and does not require CPU or interrupts.
Bit widths from 5- to 8-bits, 1 or 2 stop bits, and even/odd/none parity are supported.
* Add package.json
To make package easily integratable with PlatformIO
* Correct name back to original one
* Format package.json
* Add first shot at builder script
* Add USB stack flags, fix compile flags
* Formatting
* Add more link & USB flags
* Build Boot2 bootloader
* Formatting
* Generate linkerscript, linker fixes
* Fix linkflags, make firmware runnable
* Update USB flags and RAM size
* Correct USB flags, add dynamic sketch partitioning
* Restructure filesystem size and flash size logic into platform code
* Move C++ only flags to CXXFLAGS
* Add PlatformIO documentation
* Link to new platform.io document in the docs TOC
* Fix typos in platformio docs
* Fix one additional typo in platformio.rst
* Update docs
* Remove wrongly commited build folder
Update pico-sdk to 1.1.2
Add methods to block the opposite core while doing flash updates.
Ensure opposite core is stopped in LittleFS and EEPROM while doing
flash updates.
Update documentation with new calls.
Support running code on the second core by adding a setup1() and/or
a loop1() routine to a sketch. These functions operate exactly like
the normal Arduino ones, and anything they call will be run on
the second core automatically.
Add a simple multicore example.
