From d7173967087e022d20d1f9c812b1b668e9d3f71b Mon Sep 17 00:00:00 2001 From: Stefan Kerkmann Date: Thu, 30 Jun 2022 13:19:27 +0200 Subject: [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 Co-authored-by: Nick Brassel --- platforms/chibios/drivers/serial_usart.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'platforms/chibios/drivers/serial_usart.c') diff --git a/platforms/chibios/drivers/serial_usart.c b/platforms/chibios/drivers/serial_usart.c index f76afb5db4..6581a5b6e9 100644 --- a/platforms/chibios/drivers/serial_usart.c +++ b/platforms/chibios/drivers/serial_usart.c @@ -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 -- cgit v1.2.3