uart.h

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#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_write(uint8_t *data, size_t length);
 
size_t uart_read(uint8_t *data, size_t max_length);
 
bool uart_read_byte(uint8_t *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_enable_instance(uint8_t sercom);
 
void uart_write_instance(uint8_t sercom, uint8_t *data, size_t length);
 
size_t uart_read_instance(uint8_t sercom, uint8_t *data, size_t max_length);
 
bool uart_read_byte_instance(uint8_t sercom, uint8_t *byte);
 
void uart_disable_instance(uint8_t sercom);
 
void uart_irq_handler(uint8_t sercom);