Commit Graph

7 Commits

Author SHA1 Message Date
Thomas Kriechbaumer
c4f99f06ab
ws2812: replace RGBLED_NUM with driver-owned constant to decouple driver from RGBLEDs/RGBMATRIX defines (#18036) 2022-10-21 08:17:51 +11:00
Stefan Kerkmann
b6ea8837e4
[Bug] RP2040: only clear RX FIFO for serial pio driver clear (#18581) 2022-10-04 19:56:40 +01:00
Stefan Kerkmann
881aab9e76
Stabilize Half-duplex PIO split comms take 2 (#18421)
...by moving the actually timing critical `enter_rx_state()` and
`leave_rx_state()` functions to RAM in order to not be affected by XIP
cache spikes. This commit also reverts the hacky USB interrupt disabling
that was done in 293c53d774
2022-09-20 08:54:43 +02:00
Stefan Kerkmann
a204523bbb
[Core] RP2040 disable PIO IRQs on serial timeout (#17839) 2022-07-29 20:13:16 +02:00
Stefan Kerkmann
3f5dc47296
[Core] Use polled waiting on ChibiOS platforms that support it (#17607)
* Use polled waiting on platforms that support it

Due to context switching overhead waiting a very short amount of time on
a sleeping thread is often not accurate and in fact not usable for timing
critical usage i.e. in a driver. Thus we use polled waiting for ranges
in the us range on platforms that support it instead. The fallback is
the thread sleeping mechanism.

This includes:

* ARM platforms with CYCCNT register (ARMv7, ARMv8) this is
  incremented at CPU clock frequency
* GD32VF103 RISC-V port with CSR_MCYCLE register this is incremented at
  CPU clock frequency
* RP2040 ARMv6 port which uses the integrated timer peripheral which is
  incremented with a fixed 1MHz frequency

* Use wait_us() instead of chSysPolledDelayX

...as it is powered by busy waiting now.

* Add chibios waiting methods test bench
2022-07-11 15:17:05 +02:00
Stefan Kerkmann
0348071810
Stabilize Half-duplex PIO split comms (#17612) 2022-07-11 04:05:04 -07:00
Stefan Kerkmann
d717396708
[Core] Add Raspberry Pi RP2040 support (#14877)
* Disable RESET keycode because of naming conflicts

* Add Pico SDK as submodule

* Add RP2040 build support to QMK

* Adjust USB endpoint structs for RP2040

* Add RP2040 bootloader and double-tap reset routine

* Add generic and pro micro RP2040 boards

* Add RP2040 onekey keyboard

* Add WS2812 PIO DMA enabled driver and documentation

Supports regular and open-drain output configuration. RP2040 GPIOs are
sadly not 5V tolerant, so this is a bit use-less or needs extra hardware
or you take the risk to fry your hardware.

* Adjust SIO Driver for RP2040

* Adjust I2C Driver for RP2040

* Adjust SPI Driver for RP2040

* Add PIO serial driver and documentation

* Add general RP2040 documentation

* Apply suggestions from code review

Co-authored-by: Nick Brassel <nick@tzarc.org>

Co-authored-by: Nick Brassel <nick@tzarc.org>
2022-06-30 13:19:27 +02:00