uart.h

 
/* 
 * MIT License
 *
 * Copyright (c) 2024 Joey Castillo
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
 
#pragma once
 
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
 
typedef enum {
    UART_TXPO_0 = 0,
    UART_TXPO_2,
    UART_TXPO_0_FLOW_CONTROL,
    UART_TXPO_NONE = 0xff
} uart_txpo_t;
 
typedef enum {
    UART_RXPO_0 = 0,
    UART_RXPO_1,
    UART_RXPO_2,
    UART_RXPO_3,
    UART_RXPO_NONE = 0xff
} uart_rxpo_t;
 
void uart_init(uint32_t baud);
 
void uart_enable(void);
 
void uart_set_run_in_standby(bool run_in_standby);
 
void uart_set_irda_mode(bool irda);
 
void uart_write(char *data, size_t length);
 
size_t uart_read(char *data, size_t max_length);
 
bool uart_read_byte(char *byte);
 
void uart_disable(void);
 
void uart_init_instance(uint8_t sercom, uart_txpo_t txpo, uart_rxpo_t rxpo, uint32_t baud);
 
void uart_set_run_in_standby_instance(uint8_t sercom, bool run_in_standby);
 
void uart_set_irda_mode_instance(uint8_t sercom, bool irda);
 
void uart_enable_instance(uint8_t sercom);
 
void uart_write_instance(uint8_t sercom, char *data, size_t length);
 
size_t uart_read_instance(uint8_t sercom, char *data, size_t max_length);
 
bool uart_read_byte_instance(uint8_t sercom, char *byte);
 
void uart_disable_instance(uint8_t sercom);
 
void uart_irq_handler(uint8_t sercom);