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88 lines
3.3 KiB
C
88 lines
3.3 KiB
C
///////////////////////////////////////////////////////////////////////
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// uart.h
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//
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// Written: Jaocb Pease jacob.pease@okstate.edu 7/22/2024
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//
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// Purpose: Header for the UART functions.
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//
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//
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//
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// A component of the Wally configurable RISC-V project.
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//
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// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
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//
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// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
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//
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// Licensed under the Solderpad Hardware License v 2.1 (the
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// “License”); you may not use this file except in compliance with the
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// License, or, at your option, the Apache License version 2.0. You
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// may obtain a copy of the License at
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//
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// https://solderpad.org/licenses/SHL-2.1/
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//
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// Unless required by applicable law or agreed to in writing, any work
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// distributed under the License is distributed on an “AS IS” BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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///////////////////////////////////////////////////////////////////////
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#pragma once
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#include <stdint.h>
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#include "riscv.h"
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#include "time.h"
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// UART register addresses
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#define UART_BASE 0x10000000
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#define UART_RBR UART_BASE + 0x00
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#define UART_THR UART_BASE + 0x00
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#define UART_IER UART_BASE + 0x01
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#define UART_IIR UART_BASE + 0x02
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#define UART_FCR UART_BASE + 0x02
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#define UART_LCR UART_BASE + 0x03
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#define UART_MCR UART_BASE + 0x04
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#define UART_LSR UART_BASE + 0x05
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#define UART_MSR UART_BASE + 0x06
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#define UART_SCR UART_BASE + 0x07
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#define UART_DLL UART_BASE + 0x00
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#define UART_DLM UART_BASE + 0x01
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// Primary function prototypes
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void init_uart(uint32_t freq, uint32_t baud);
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void write_reg_u8(uintptr_t addr, uint8_t value);
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uint8_t read_reg_u8(uintptr_t addr);
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int read_serial(uint8_t *res);
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void print_uart(const char* str);
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void print_uart_int(uint32_t addr);
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void print_uart_dec(uint64_t addr);
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void print_uart_addr(uint64_t addr);
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void print_uart_hex(uint64_t addr, int n);
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void print_uart_byte(uint8_t byte);
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void print_uart_float(float num, int precision);
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// void print_time();
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// Print numbers in hex with specified widths
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#define print_uart_int(addr) print_uart_hex(addr, 4)
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#define print_uart_addr(addr) print_uart_hex(addr, 8)
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#define print_uart_byte(addr) print_uart_hex(addr, 1)
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#define print_r7(addr) print_uart_hex(addr, 5)
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#define print_r1(addr) print_uart_byte(addr)
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// Print line with numbers utility macros
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#define println(msg) print_uart(msg "\r\n");
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#define println_with_dec(msg, num) print_uart(msg); print_uart_dec(num); print_uart("\r\n")
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#define println_with_byte(msg, num) print_uart(msg); print_uart_byte(num); print_uart("\r\n")
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#define println_with_int(msg, num) print_uart(msg); print_uart_int(num); print_uart("\r\n")
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#define println_with_addr(msg, num) print_uart(msg); print_uart_addr(num); print_uart("\r\n")
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#define println_with_r1(msg, num) print_uart(msg); print_r1(num); print_uart("\r\n")
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#define println_with_r7(msg, num) print_uart(msg); print_r7(num); print_uart("\r\n")
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#define println_with_float(msg, num) print_uart(msg); set_status_fs(); print_uart_float(num,5); clear_status_fs(); print_uart("\r\n")
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/* #define print_time() print_uart("["); \ */
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/* set_status_fs(); \ */
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/* print_uart_float(getTime(),5); \ */
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/* clear_status_fs(); \ */
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/* print_uart("] ") */
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