firmware/print.c


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#include "firmware.h"

#define OUTPORT 0x10000000

void print_chr(char ch)
{
	*((volatile uint32_t*)OUTPORT) = ch;
}

void print_str(const char *p)
{
	while (*p != 0)
		*((volatile uint32_t*)OUTPORT) = *(p++);
}

void print_dec(int val)
{
	char buffer[10];
	char *p = buffer;
	while (val || p == buffer) {
		*(p++) = val % 10;
		val = val / 10;
	}
	while (p != buffer) {
		*((volatile uint32_t*)OUTPORT) = '0' + *(--p);
	}
}

void print_hex(unsigned int val)
{
	int i;
	for (i = 32-4; i >= 0; i -= 4)
		*((volatile uint32_t*)OUTPORT) = "0123456789ABCDEF"[(val >> i) % 16];
}