16 void uart_init(uint8_t uart, uint8_t interrupts);
17 void uart_putchar_wait(uint8_t uart, int c);
18 int uart_putchar_nb(uint8_t uart, int c);
19 int uart_getchar_nb(uint8_t uart, uint8_t *ch);
20 int uart_tx_busy(uint8_t uart);
21 int uart_baudrate(uint8_t uart, enum uart_baudrate bdrt);
28 void uart_irq_enable(uint8_t uart, enum uart_irq irq, int on);
30 void uart_poll(uint8_t uart);
32 #endif /* _CAL_UART_H */