uart.h

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#pragma once
 
#include <sys.h>
#include <stdint.h>
#include <timer2_mode0.h>
#include <timer2_to_ms.h>
 
#define uart1_init(uart_baudrate)                                       \
{                                                                       \
    SCON = 0x50; /* Set Mode1: 8-Bit UART with Variable Baud Rate */    \
    timer2_mode0_reload(timer2_mode0_baudrate_to_ticks(uart_baudrate)); \
    AUXR &= 0xE2;                                                       \
    AUXR |= 0x15;                                                       \
}
 
void uart1_send_byte(uint8_t data);
 
uint8_t uart1_receive_byte();
 
int putchar(int ch);
 
int getchar(void);