mirror of
https://github.com/saymrwulf/pulp-runtime.git
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41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
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// Copyright 2022 ETH Zurich and University of Bologna.
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// Licensed under the Apache License, Version 2.0, see LICENSE for details.
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// SPDX-License-Identifier: Apache-2.0
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//
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// Nils Wistoff <nwistoff@iis.ee.ethz.ch>
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// Paul Scheffler <paulsc@iis.ee.ethz.ch>
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#pragma once
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#include <stdint.h>
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// Register offsets
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#define UART_RBR_REG_OFFSET 0
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#define UART_THR_REG_OFFSET 0
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#define UART_INTR_ENABLE_REG_OFFSET 4
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#define UART_INTR_IDENT_REG_OFFSET 8
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#define UART_FIFO_CONTROL_REG_OFFSET 8
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#define UART_LINE_CONTROL_REG_OFFSET 12
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#define UART_MODEM_CONTROL_REG_OFFSET 16
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#define UART_LINE_STATUS_REG_OFFSET 20
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#define UART_MODEM_STATUS_REG_OFFSET 24
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#define UART_DLAB_LSB_REG_OFFSET 0
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#define UART_DLAB_MSB_REG_OFFSET 4
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// Register fields
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#define UART_LINE_STATUS_DATA_READY_BIT 0
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#define UART_LINE_STATUS_THR_EMPTY_BIT 5
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#define UART_LINE_STATUS_TMIT_EMPTY_BIT 6
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int uart_read_ready(void *uart_base);
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void uart_write(void *uart_base, uint8_t byte);
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void uart_write_str(void *uart_base, void *src, uint64_t len);
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void uart_write_flush(void *uart_base);
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uint8_t uart_read(void *uart_base);
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void uart_read_str(void *uart_base, void *dst, uint64_t len);
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