max80_fw/rv32/console.c

#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>

#include "fw.h"
#include "console.h"
#include "io.h"

static __always_inline void __con_putc(char c)
{
    /*
     * Wait for FIFO space IF DTR is asserted (otherwise there might
     * not be anyone listening...
     */
    while (CON_FLOW_CTL &&
	   (CON_STATUS & (TTY_STATUS_TX_HIGH|TTY_STATUS_DTR_IN))
	   == (TTY_STATUS_TX_HIGH|TTY_STATUS_DTR_IN))
	pause();

    if (c == '\n')
	CON_DATA = '\r';
    CON_DATA = c;
}

void __hot con_putc(char c)
{
    __con_putc(c);
}

void __hot con_puts(const char *str)
{
    while (*str)
	__con_putc(*str++);
}

void con_vprintf(const char *fmt, va_list ap)
{
    char buf[128];		/* Maximum text size */
    unsigned int len;
    const char *p;

    vsnprintf(buf, sizeof buf, fmt, ap);
    con_puts(buf);
}

void con_printf(const char *fmt, ...)
{
    va_list ap;
    va_start(ap, fmt);
    con_vprintf(fmt, ap);
    va_end(ap);
}