qmk_firmware/platforms/chibios/chibios_config.h

/* 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");

/* Aliases for GPIO PWM channels - every pin has at least one PWM channel
 * assigned */
#    define RP2040_PWM_CHANNEL_A 1U
#    define RP2040_PWM_CHANNEL_B 2U

#    define BACKLIGHT_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)
#    define BACKLIGHT_PWM_COUNTER_FREQUENCY 1000000
#    define BACKLIGHT_PWM_PERIOD BACKLIGHT_PWM_COUNTER_FREQUENCY / 2048

#    define AUDIO_PWM_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)
#    define AUDIO_PWM_COUNTER_FREQUENCY 500000

#    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
#        define AUDIO_PWM_PAL_MODE PAL_MODE_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
#        define AUDIO_PWM_PAL_MODE 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

#        define SPI_SCK_FLAGS PAL_MODE_ALTERNATE(SPI_SCK_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST | PAL_WB32_CURRENT_LEVEL3
#    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

// SPI Fallbacks
#ifndef SPI_SCK_FLAGS
#    define SPI_SCK_FLAGS PAL_MODE_ALTERNATE(SPI_SCK_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST
#endif

#ifndef SPI_MOSI_FLAGS
#    define SPI_MOSI_FLAGS PAL_MODE_ALTERNATE(SPI_MOSI_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST
#endif

#ifndef SPI_MISO_FLAGS
#    define SPI_MISO_FLAGS PAL_MODE_ALTERNATE(SPI_MISO_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST
#endif