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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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28
platforms/chibios/drivers/serial_usart.c
View file

@ -8,12 +8,12 @@
#if defined(SERIAL_USART_CONFIG)
static QMKSerialConfig serial_config = SERIAL_USART_CONFIG;
#else
#elif defined(MCU_STM32) /* STM32 MCUs */
static QMKSerialConfig serial_config = {
# if HAL_USE_SERIAL
.speed = (SERIAL_USART_SPEED), /* baudrate - mandatory */
.speed = (SERIAL_USART_SPEED),
# else
.baud = (SERIAL_USART_SPEED), /* baudrate - mandatory */
.baud = (SERIAL_USART_SPEED),
# endif
.cr1 = (SERIAL_USART_CR1),
.cr2 = (SERIAL_USART_CR2),
@ -23,6 +23,19 @@ static QMKSerialConfig serial_config = {
.cr3 = (SERIAL_USART_CR3)
# endif
};
#elif defined(MCU_RP) /* Raspberry Pi MCUs */
/* USART in 8E2 config with RX and TX FIFOs enabled. */
// clang-format off
static QMKSerialConfig serial_config = {
.baud = (SERIAL_USART_SPEED),
.UARTLCR_H = UART_UARTLCR_H_WLEN_8BITS | UART_UARTLCR_H_PEN | UART_UARTLCR_H_STP2 | UART_UARTLCR_H_FEN,
.UARTCR = 0U,
.UARTIFLS = UART_UARTIFLS_RXIFLSEL_1_8F | UART_UARTIFLS_TXIFLSEL_1_8E,
.UARTDMACR = 0U
};
// clang-format on
#else
# error MCU Familiy not supported by default, supply your own serial_config by defining SERIAL_USART_CONFIG in your keyboard files.
#endif
static QMKSerialDriver* serial_driver = (QMKSerialDriver*)&SERIAL_USART_DRIVER;
@ -156,7 +169,7 @@ inline bool serial_transport_receive_blocking(uint8_t* destination, const size_t
* @brief Initiate pins for USART peripheral. Half-duplex configuration.
*/
__attribute__((weak)) void usart_init(void) {
# if defined(MCU_STM32)
# if defined(MCU_STM32) /* STM32 MCUs */
# if defined(USE_GPIOV1)
palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE_OPENDRAIN);
# else
@ -166,6 +179,8 @@ __attribute__((weak)) void usart_init(void) {
# if defined(USART_REMAP)
USART_REMAP;
# endif
# elif defined(MCU_RP) /* Raspberry Pi MCUs */
# error Half-duplex with the SIO driver is not supported due to hardware limitations on the RP2040, switch to the PIO driver which has half-duplex support.
# else
# pragma message "usart_init: MCU Familiy not supported by default, please supply your own init code by implementing usart_init() in your keyboard files."
# endif
@ -177,7 +192,7 @@ __attribute__((weak)) void usart_init(void) {
* @brief Initiate pins for USART peripheral. Full-duplex configuration.
*/
__attribute__((weak)) void usart_init(void) {
# if defined(MCU_STM32)
# if defined(MCU_STM32) /* STM32 MCUs */
# if defined(USE_GPIOV1)
palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE_PUSHPULL);
palSetLineMode(SERIAL_USART_RX_PIN, PAL_MODE_INPUT);
@ -189,6 +204,9 @@ __attribute__((weak)) void usart_init(void) {
# if defined(USART_REMAP)
USART_REMAP;
# endif
# elif defined(MCU_RP) /* Raspberry Pi MCUs */
palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE_UART);
palSetLineMode(SERIAL_USART_RX_PIN, PAL_MODE_ALTERNATE_UART);
# else
# pragma message "usart_init: MCU Familiy not supported by default, please supply your own init code by implementing usart_init() in your keyboard files."
# endif