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#include <drivers/uart.h>
#include <lib/kmem.h>
#include <lib/strings.h>
#include <sys/schedule.h>
#define UART_BUFFER_SIZE 0x100
struct UartBuffer {
char buffer[UART_BUFFER_SIZE];
unsigned long roffset;
unsigned long woffset;
} ubuffer;
void uart_init(void)
{
ubuffer.roffset = 0;
ubuffer.woffset = 0;
}
// s = zero-terminated string
void* uart_print(char* s)
{
char* ptr = s;
while (1) {
if (*ptr == 0)
break;
ubuffer.buffer[ubuffer.woffset] = *ptr;
if ((ubuffer.woffset+1)%UART_BUFFER_SIZE == ubuffer.roffset)
return ptr;
ubuffer.woffset++;
ubuffer.woffset %= UART_BUFFER_SIZE;
ptr += 1;
}
add_thread(uart_flush, 0, 5);
return 0;
}
void uart_flush(void)
{
while (ubuffer.roffset != ubuffer.woffset) {
uart_char(ubuffer.buffer[ubuffer.roffset++]);
ubuffer.roffset %= UART_BUFFER_SIZE;
}
}
void uart_10(unsigned long val)
{
char* dptr = u32_to_str(val);
uart_string(dptr);
kfree(dptr);
}
void uart_hexn(unsigned long c_val)
{
uart_hex(c_val);
uart_char('\n');
}
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