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/*
* CNC-remote-control
* Debug interface
*
* Copyright (C) 2009-2016 Michael Buesch <m@bues.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "debug.h"
#include "main.h"
#include "util.h"
#include "uart.h"
#include <stdio.h>
static uint8_t dbg_ringbuf[256];
static uint8_t dbg_ringbuf_in;
static uint8_t dbg_ringbuf_out;
static uint8_t dbg_ringbuf_used;
uint8_t debug_ringbuf_count(void)
{
/* This is only approximate. Count may change at any time. */
return ATOMIC_LOAD(dbg_ringbuf_used);
}
uint8_t debug_ringbuf_get(void *buf, uint8_t size)
{
uint8_t *outbuf = buf;
uint8_t sreg, count = 0;
sreg = irq_disable_save();
for ( ; dbg_ringbuf_used && size; dbg_ringbuf_used--, size--, count++) {
*outbuf++ = dbg_ringbuf[dbg_ringbuf_out];
if (dbg_ringbuf_out >= ARRAY_SIZE(dbg_ringbuf) - 1)
dbg_ringbuf_out = 0u;
else
dbg_ringbuf_out++;
}
irq_restore(sreg);
return count;
}
static void debug_ringbuf_putchar(char c)
{
uint8_t sreg;
uint16_t used;
if (!devflag_is_set(DEVICE_FLG_USBLOGMSG))
return;
sreg = irq_disable_save();
used = dbg_ringbuf_used;
if (used < ARRAY_SIZE(dbg_ringbuf)) {
dbg_ringbuf[dbg_ringbuf_in] = (uint8_t)c;
if (dbg_ringbuf_in >= ARRAY_SIZE(dbg_ringbuf) - 1)
dbg_ringbuf_in = 0u;
else
dbg_ringbuf_in++;
dbg_ringbuf_used++;
}
irq_restore(sreg);
}
static void debug_putchar(char c)
{
uart_putchar(c);
debug_ringbuf_putchar(c);
}
static int debug_stream_putchar(char c, FILE *stream)
{
debug_putchar(c);
return 0;
}
static FILE debug_fstream = FDEV_SETUP_STREAM(debug_stream_putchar, NULL,
_FDEV_SETUP_WRITE);
void do_debug_printf(const char PROGPTR *fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf_P(&debug_fstream, fmt, args);
va_end(args);
}
void debug_dumpmem(const void *_mem, uint8_t size)
{
const uint8_t *mem = _mem;
uint8_t i;
if (!debug_enabled())
return;
if (!mem || !size)
return;
for (i = 0; i < size; i++) {
if (i % 16 == 0) {
if (i != 0)
debug_putchar('\n');
debug_printf("0x%02X: ", i);
}
if (i % 2 == 0)
debug_putchar(' ');
debug_printf("%02X", mem[i]);
}
debug_putchar('\n');
}
void debug_init(void)
{
uart_init();
stdout = &debug_fstream;
stderr = &debug_fstream;
debug_printf("CNC control initializing\n");
}
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