#include "uart.h"

#define UART0 ((volatile uint32_t *)0x40000000)
#define DATA 0
#define STATE 1
#define CTRL 2
#define INTSTAT 3
#define BAUDDIV 4
#define PID4 1012
#define PID0 1016
#define PID1 1017
#define PID2 1018
#define PID3 1019
#define CID0 1020
#define CID1 1021
#define CID2 1022
#define CID3 1023

#define CTRL_TX_EN 0x01
#define CTRL_RX_EN 0x02
#define CTRL_TXINT_EN 0x04
#define CTRL_RXINT_EN 0x08
#define CTRL_TXOR_EN 0x10
#define CTRL_RXOR_EN 0x20
#define CTRL_HISPEEDTEST_EN 0x40

#include "vga.h"

void uart_isr() {
    vga_terminal_printf("UART ISR!\n");
}

void uart_init() {
    UART0[BAUDDIV] = 0xff;
    UART0[CTRL] = CTRL_TX_EN | CTRL_RX_EN | CTRL_TXINT_EN | CTRL_RXINT_EN;
    interrupt_enable(IRQnum_UART0_RX);
    interrupt_enable(IRQnum_UART0_TX);

    void **irq = IRQ(IRQnum_UART0_RX);
    *irq = &uart_isr;
    irq = IRQ(IRQnum_UART0_TX);
        *irq = &uart_isr;
}

char uart_read() {
    return 0;
}

void uart_write(char data) {

}