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#include <drivers/uart.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;
}
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)
{
unsigned long t = val;
unsigned long c;
static char buffer[11] = "0000000000\0";
char* dptr = buffer + 9;
for(int i = 0; i <= 10; i++) {
c = t%10;
*dptr = 0x30 + (c&0xF);
t /= 10;
if (t==0)
break;
dptr -= 1;
}
uart_string(dptr);
}
void uart_hexn(unsigned long c_val)
{
uart_hex(c_val);
uart_char('\n');
}
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