sercons.h File Reference

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Functions
void	Serial_Init (void)
void	Serial_LateInit (void)
void	Serial_Interrupt (void *arg)
bool	Serial_HasData ()
char	Serial_Getc ()
void	Serial_Putc (char ch)
void	Serial_Puts (const char *str)

Function Documentation

Serial_Getc()

char Serial_Getc

(

)

Definition at line 78 of file sercons.c.

{
    while ((inb(base + UART_OFFSET_LSR) & 0x01) == 0)
    {
        // Timeout!
    }
    return inb(base + UART_OFFSET_DATA);
}

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Serial_HasData()

bool Serial_HasData

(

)

Definition at line 73 of file sercons.c.

{
    return (inb(base + UART_OFFSET_LSR) & 0x01) != 0;
}

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Serial_Init()

void Serial_Init

(

void

)

Definition at line 40 of file sercons.c.

{
    base = COM1_BASE;
    irq = COM1_IRQ;
 
    // Disable interrupts
    outb(base + UART_OFFSET_IER, 0);
 
    // Enable DLAB
    outb(base + UART_OFFSET_LCR, UART_LCR_DLAB);
    outb(base + UART_OFFSET_DIVLO, 1); // 115200 Baud
    outb(base + UART_OFFSET_DIVLO, 0);
    outb(base + UART_OFFSET_LCR, UART_LCR_8N1);
 
    // Enable interrupts
    outb(base + UART_OFFSET_IIR, 0xC7);
    outb(base + UART_OFFSET_MCR, 0x0B);
}

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Serial_Interrupt()

void Serial_Interrupt

(

void *

arg

)

Definition at line 68 of file sercons.c.

{
    kprintf("Serial interrupt!\n");
}

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Serial_LateInit()

void Serial_LateInit

(

void

)

Definition at line 59 of file sercons.c.

{
    handler.irq = irq;
    handler.cb = &Serial_Interrupt;
    handler.arg = NULL;
 
    IRQ_Register(irq, &handler);
}

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Serial_Putc()

void Serial_Putc

(

char

ch

)

Definition at line 87 of file sercons.c.

{
    while ((inb(base + UART_OFFSET_LSR) & 0x20) == 0)
    {
        // Timeout!
    }
    outb(base + UART_OFFSET_DATA, ch);
 
    if (ch == '\b') {
        Serial_Putc(0x1B);
        Serial_Putc('[');
        Serial_Putc('P');
    }
}

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Serial_Puts()

void Serial_Puts

(

const char *

str

)

Definition at line 102 of file sercons.c.

{
    const char *p = str;
    while (*p != '\0')
        Serial_Putc(*p++);
}

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