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authorStefan Kerkmann <karlk90@pm.me>2022-06-30 13:19:27 +0200
committerGitHub <noreply@github.com>2022-06-30 13:19:27 +0200
commitd7173967087e022d20d1f9c812b1b668e9d3f71b (patch)
tree68198271dd5125193795c399c6478ead0a71b09f /platforms/chibios/drivers/serial_usart.c
parentd206c1791e5858323cff0664f39f95edc1381ac5 (diff)
[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 <nick@tzarc.org> Co-authored-by: Nick Brassel <nick@tzarc.org>
Diffstat (limited to 'platforms/chibios/drivers/serial_usart.c')
-rw-r--r--platforms/chibios/drivers/serial_usart.c28
1 files changed, 23 insertions, 5 deletions
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