Create uart.c

keyboards/yandrstudio/whiteMouse28T/uart.c

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+/* Copyright 2021
+ *
+ * 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 3 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "uart.h"
+
+#include "quantum.h"
+
+static SerialConfig serialConfig = {SERIAL_DEFAULT_BITRATE, SD1_CR1, SD1_CR2, SD1_CR3};
+
+void uart_init(uint32_t baud) {
+ static bool is_initialised = false;
+
+ if (!is_initialised) {
+ is_initialised = true;
+
+ serialConfig.speed = baud;
+
+#if defined(USE_GPIOV1)
+ palSetLineMode(SD1_TX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
+ palSetLineMode(SD1_RX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
+#else
+ palSetLineMode(SD1_TX_PIN, PAL_MODE_ALTERNATE(SD1_TX_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL);
+ palSetLineMode(SD1_RX_PIN, PAL_MODE_ALTERNATE(SD1_RX_PAL_MODE) | PAL_MODE_INPUT);
+#endif
+ sdStart(&SERIAL_DRIVER, &serialConfig);
+ }
+}
+
+void uart_putchar(uint8_t c) { sdPut(&SERIAL_DRIVER, c); }
+
+uint8_t uart_getchar(void) {
+ msg_t res = sdGet(&SERIAL_DRIVER);
+
+ return (uint8_t)res;
+}
+
+bool uart_available(void) { return !sdGetWouldBlock(&SERIAL_DRIVER); }