63 lines
No EOL
2.1 KiB
C
63 lines
No EOL
2.1 KiB
C
/*********************************************************************************/
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/* Module Name: uart.c */
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/* Project: AurixOS */
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/* */
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/* Copyright (c) 2024-2025 Jozef Nagy */
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/* */
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/* This source is subject to the MIT License. */
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/* See License.txt in the root of this repository. */
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/* All other rights reserved. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
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/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
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/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
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/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
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/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
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/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */
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/* SOFTWARE. */
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/*********************************************************************************/
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#include <arch/cpu/cpu.h>
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#include <debug/uart.h>
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#include <stdint.h>
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static uint8_t is_tx_empty(void)
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{
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return inb(COM1 + 5) & 0x20;
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}
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static uint8_t received(void)
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{
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return inb(COM1 + 5) & 1;
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}
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void serial_init(void)
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{
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// TODO: Initialize all COM ports
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outb(COM1 + 1, 0x00);
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outb(COM1 + 3, 0x80);
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outb(COM1, 0x03);
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outb(COM1 + 1, 0x00);
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outb(COM1 + 3, 0x03);
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outb(COM1 + 2, 0xC7);
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outb(COM1 + 4, 0x0B);
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outb(COM1 + 4, 0x0F);
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}
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void serial_send(char c)
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{
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while (is_tx_empty() == 0);
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outb(COM1, c);
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}
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void serial_sendstr(char *s)
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{
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while (*s != '\0') {
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if (*s == '\r') {
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s++;
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continue;
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}
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serial_send(*s++);
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}
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} |