qmk_firmware/platforms/chibios/chibios_config.h
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

124 lines
4.2 KiB
C

/* Copyright 2019
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#ifndef USB_VBUS_PIN
# define SPLIT_USB_DETECT // Force this on when dedicated pin is not used
#endif
#if defined(MCU_RP)
# define CPU_CLOCK RP_CORE_CLK
// ChibiOS uses the RP2040 timer peripheral as its real time counter, this timer
// is monotonic and running at 1MHz.
# define REALTIME_COUNTER_CLOCK 1000000
# define USE_GPIOV1
# define PAL_OUTPUT_TYPE_OPENDRAIN _Static_assert(0, "RP2040 has no Open Drain GPIO configuration, setting this is not possible");
# define usb_lld_endpoint_fields
# define I2C1_SCL_PAL_MODE (PAL_MODE_ALTERNATE_I2C | PAL_RP_PAD_SLEWFAST | PAL_RP_PAD_PUE | PAL_RP_PAD_DRIVE4)
# define I2C1_SDA_PAL_MODE I2C1_SCL_PAL_MODE
# define USE_I2CV1_CONTRIB
# if !defined(I2C1_CLOCK_SPEED)
# define I2C1_CLOCK_SPEED 400000
# endif
# define SPI_SCK_PAL_MODE (PAL_MODE_ALTERNATE_SPI | PAL_RP_PAD_SLEWFAST | PAL_RP_PAD_DRIVE4)
# define SPI_MOSI_PAL_MODE SPI_SCK_PAL_MODE
# define SPI_MISO_PAL_MODE SPI_SCK_PAL_MODE
#endif
// STM32 compatibility
#if defined(MCU_STM32)
# define CPU_CLOCK STM32_SYSCLK
# if defined(STM32F1XX)
# define USE_GPIOV1
# define PAL_MODE_ALTERNATE_OPENDRAIN PAL_MODE_STM32_ALTERNATE_OPENDRAIN
# define PAL_MODE_ALTERNATE_PUSHPULL PAL_MODE_STM32_ALTERNATE_PUSHPULL
# else
# define PAL_OUTPUT_TYPE_OPENDRAIN PAL_STM32_OTYPE_OPENDRAIN
# define PAL_OUTPUT_TYPE_PUSHPULL PAL_STM32_OTYPE_PUSHPULL
# define PAL_OUTPUT_SPEED_HIGHEST PAL_STM32_OSPEED_HIGHEST
# define PAL_PUPDR_FLOATING PAL_STM32_PUPDR_FLOATING
# endif
# if defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) || defined(STM32L1XX)
# define USE_I2CV1
# endif
#endif
// GD32 compatibility
#if defined(MCU_GD32V)
# define CPU_CLOCK GD32_SYSCLK
# if defined(GD32VF103)
# define USE_GPIOV1
# define USE_I2CV1
# define PAL_MODE_ALTERNATE_OPENDRAIN PAL_MODE_GD32_ALTERNATE_OPENDRAIN
# define PAL_MODE_ALTERNATE_PUSHPULL PAL_MODE_GD32_ALTERNATE_PUSHPULL
# endif
#endif
// WB32 compatibility
#if defined(MCU_WB32)
# define CPU_CLOCK WB32_MAINCLK
# if defined(WB32F3G71xx) || defined(WB32FQ95xx)
# define PAL_OUTPUT_TYPE_OPENDRAIN PAL_WB32_OTYPE_OPENDRAIN
# define PAL_OUTPUT_TYPE_PUSHPULL PAL_WB32_OTYPE_PUSHPULL
# define PAL_OUTPUT_SPEED_HIGHEST PAL_WB32_OSPEED_HIGH
# define PAL_PUPDR_FLOATING PAL_WB32_PUPDR_FLOATING
# endif
#endif
#if defined(GD32VF103)
/* This chip has the same API as STM32F103, but uses different names for literally the same thing.
* As of 4.7.2021 QMK is tailored to use STM32 defines/names, for compatibility sake
* we just redefine the GD32 names. */
# include "gd32v_compatibility.h"
#endif
// teensy compatibility
#if defined(MCU_KINETIS)
# define CPU_CLOCK KINETIS_SYSCLK_FREQUENCY
# if defined(K20x) || defined(K60x) || defined(KL2x)
# define USE_I2CV1
# define USE_I2CV1_CONTRIB // for some reason a bunch of ChibiOS-Contrib boards only have clock_speed
# define USE_GPIOV1
# endif
#endif
#if defined(MCU_MIMXRT1062)
# include "clock_config.h"
# define CPU_CLOCK BOARD_BOOTCLOCKRUN_CORE_CLOCK
#endif
#if defined(HT32)
# define CPU_CLOCK HT32_CK_SYS_FREQUENCY
# define PAL_MODE_ALTERNATE PAL_HT32_MODE_AF
# define PAL_OUTPUT_TYPE_OPENDRAIN (PAL_HT32_MODE_OD | PAL_HT32_MODE_DIR)
# define PAL_OUTPUT_TYPE_PUSHPULL PAL_HT32_MODE_DIR
# define PAL_OUTPUT_SPEED_HIGHEST 0
#endif
#if !defined(REALTIME_COUNTER_CLOCK)
# define REALTIME_COUNTER_CLOCK CPU_CLOCK
#endif