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F1:F103/FX3U/usart.h

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+/*
+ * This file is part of the fx3u project.
+ * Copyright 2024 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+// input and output buffers size
+#define UARTBUFSZI  (64)
+#define UARTBUFSZO  (128)
+
+#define usartrx()  (usart_linerdy)
+#define usartovr() (usart_bufovr)
+
+extern volatile int usart_txrdy;
+
+int usart_transmit();
+void usart_setup(uint32_t speed);
+int usart_getline(char **line);
+int usart_send(const char *str);
+int usart_putchar(const char ch);