px4-firmware/nuttx/drivers/sercomm/uart.h

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#ifndef _UART_H
#define _UART_H
#include <stdint.h>
enum uart_baudrate {
UART_38400,
UART_57600,
UART_115200,
UART_230400,
UART_460800,
UART_614400,
UART_921600,
};
void uart_init(uint8_t uart, uint8_t interrupts);
void uart_putchar_wait(uint8_t uart, int c);
int uart_putchar_nb(uint8_t uart, int c);
int uart_getchar_nb(uint8_t uart, uint8_t *ch);
int uart_tx_busy(uint8_t uart);
int uart_baudrate(uint8_t uart, enum uart_baudrate bdrt);
enum uart_irq {
UART_IRQ_TX_EMPTY,
UART_IRQ_RX_CHAR,
};
void uart_irq_enable(uint8_t uart, enum uart_irq irq, int on);
void uart_poll(uint8_t uart);
#endif /* _UART_H */