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[Core] Add Raspberry Pi RP2040 support (#14877)

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* 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>
This commit is contained in:
Stefan Kerkmann 2022-06-30 13:19:27 +02:00 • committed by GitHub
parent d206c1791e
commit d717396708
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GPG key ID: 4AEE18F83AFDEB23
43 changed files with 2026 additions and 96 deletions
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57
platforms/chibios/bootloaders/rp2040.c Normal file
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// Copyright 2022 Stefan Kerkmann
// SPDX-License-Identifier: GPL-2.0-or-later
#include "quantum.h"
#include "hal.h"
#include "bootloader.h"
#include "pico/bootrom.h"
#if !defined(RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED)
# define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED_MASK 0U
#else
# define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED_MASK (1U << RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED)
#endif
__attribute__((weak)) void mcu_reset(void) {
NVIC_SystemReset();
}
void bootloader_jump(void) {
reset_usb_boot(RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED_MASK, 0U);
}
void enter_bootloader_mode_if_requested(void) {}
#if defined(RP2040_BOOTLOADER_DOUBLE_TAP_RESET)
# if !defined(RP2040_BOOTLOADER_DOUBLE_TAP_RESET_TIMEOUT)
# define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_TIMEOUT 200U
# endif
// Needs to be located in a RAM section that is never initialized on boot to
// preserve its value on reset
static volatile uint32_t __attribute__((section(".ram0.bootloader_magic"))) magic_location;
const uint32_t magic_token = 0xCAFEB0BA;
// We can not use the __early_init / enter_bootloader_mode_if_requested hook as
// we depend on an already initialized system with usable memory regions and
// populated function pointer tables to the optimized math functions in the
// bootrom. This function is called just prior to main.
void __late_init(void) {
// All clocks have to be enabled before jumping to the bootloader function,
// otherwise the bootrom will be stuck infinitely.
clocks_init();
if (magic_location != magic_token) {
magic_location = magic_token;
// ChibiOS is not initialized at this point, so sleeping is only
// possible via busy waiting. The internal timer peripheral is running
// at this point with a precision of 1us.
chSysPolledDelayX(MS2RTC(1 * MHZ, RP2040_BOOTLOADER_DOUBLE_TAP_RESET_TIMEOUT));
magic_location = 0;
return;
}
magic_location = 0;
reset_usb_boot(RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED_MASK, 0U);
}
#endif