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monitor.c
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monitor.c
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/*------------------------------------------------------------------------*/
/* Universal string handler for user console interface */
/*------------------------------------------------------------------------*/
/*
/ Copyright (C) 2010, ChaN, all right reserved.
/
/ * This software is a free software and there is NO WARRANTY.
/ * No restriction on use. You can use, modify and redistribute it for
/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
/ * Redistributions of source code must retain the above copyright notice.
/
/-------------------------------------------------------------------------*/
#include <stdarg.h>
#include "monitor.h"
#if _USE_XFUNC_IN
unsigned char (*xfunc_in)(void); /* Pointer to the input stream */
#endif
#if _USE_XFUNC_OUT
void (*xfunc_out)(unsigned char); /* Pointer to the output stream */
#endif
#if _USE_XFUNC_OUT
/*----------------------------------------------*/
/* Put a character */
/*----------------------------------------------*/
void xputc (char c)
{
if (_CR_CRLF && c == '\n') xfunc_out('\r'); /* CR -> CRLF */
xfunc_out((unsigned char)c);
}
/*----------------------------------------------*/
/* Put a null-terminated string */
/*----------------------------------------------*/
void xputs (const char* str)
{
while (*str)
xputc(*str++);
}
/*----------------------------------------------*/
/* Formatted string output */
/*----------------------------------------------*/
/* xprintf("%6d", -200); " -200"
xprintf("%02u", 5); "05"
xprintf("%ld", 12345678L); "12345678C"
xprintf("%08LX", 0x123ABCUL); "00123ABC"
xprintf("%016b", 0x550F); "0101010100001111"
xprintf("%s", "String"); "String"
xprintf("%c", 'a'); "a"
*/
void xprintf (
const char* str, /* Pointer to the format string */
... /* Optional arguments */
)
{
va_list arp;
unsigned int r, i, w, f;
unsigned long val;
char s[16], c, d;
va_start(arp, str);
while ((c = *str++) != 0) {
if (c != '%') {
xputc(c); continue;
}
c = *str++;
f = 0;
if (c == '0') { /* Flag: '0' padded */
f = 1; c = *str++;
}
w = 0;
while (c >= '0' && c <= '9') { /* Minimum width */
w = w * 10 + c - '0';
c = *str++;
}
if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
f |= 2; c = *str++;
}
if (!c) break;
d = c;
if (d >= 'a') d -= 0x20;
switch (d) { /* Type is... */
case 'S' : /* String */
xputs(va_arg(arp, char*)); continue;
case 'C' : /* Character */
xputc((char)va_arg(arp, int)); continue;
case 'B' : /* Binary */
r = 2; break;
case 'O' : /* Octal */
r = 8; break;
case 'D' : /* Signed decimal */
case 'U' : /* Unsigned decimal */
r = 10; break;
case 'X' : /* Hexdecimal */
r = 16; break;
default: /* Unknown */
xputc(c); continue;
}
/* Get an argument and put it in numeral */
// mthomas val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
if (f & 2) {
val = va_arg(arp, long);
} else {
if (d == 'D') {
val = (long)va_arg(arp, int);
} else {
val =va_arg(arp, unsigned int);
}
}
if (d == 'D' && (val & 0x80000000)) {
val = 0 - val;
f |= 4;
}
i = 0;
do {
d = (char)(val % r); val /= r;
if (d > 9) {
d += 7;
if (c == 'x') d += 0x20;
}
s[i++] = d + '0';
} while (val && i < sizeof(s));
if (f & 4) s[i++] = '-';
while (i < w--) xputc((f & 1) ? '0' : ' ');
do xputc(s[--i]); while(i);
}
va_end(arp);
}
/*----------------------------------------------*/
/* Dump a block of byte array */
/*----------------------------------------------*/
void put_dump (
const void* buff, /* Pointer to the byte array to be dumped */
unsigned long addr, /* Heading address value */
int cnt /* Number of bytes to be dumped */
)
{
int i;
const unsigned char *p = buff;
xprintf("%08lX ", addr); /* address */
for (i = 0; i < cnt; i++) /* data (hexdecimal) */
xprintf(" %02X", p[i]);
xputc(' ');
for (i = 0; i < cnt; i++) /* data (ascii) */
xputc((p[i] >= ' ' && p[i] <= '~') ? p[i] : '.');
xputc('\n');
}
#endif /* _USE_XFUNC_OUT */
#if _USE_XFUNC_IN
/*----------------------------------------------*/
/* Get a value of the string */
/*----------------------------------------------*/
/* "123 -5 0x3ff 0b1111 0377 w "
^ 1st call returns 123 and next ptr
^ 2nd call returns -5 and next ptr
^ 3rd call returns 1023 and next ptr
^ 4th call returns 15 and next ptr
^ 5th call returns 255 and next ptr
^ 6th call fails and returns 0
*/
int xatoi ( /* 0:Failed, 1:Successful */
char **str, /* Pointer to pointer to the string */
long *res /* Pointer to the valiable to store the value */
)
{
unsigned long val;
unsigned char c, r, s = 0;
*res = 0;
while ((c = **str) == ' ') (*str)++; /* Skip leading spaces */
if (c == '-') { /* negative? */
s = 1;
c = *(++(*str));
}
if (c == '0') {
c = *(++(*str));
switch (c) {
case 'x': /* hexdecimal */
r = 16; c = *(++(*str));
break;
case 'b': /* binary */
r = 2; c = *(++(*str));
break;
default:
if (c <= ' ') return 1; /* single zero */
if (c < '0' || c > '9') return 0; /* invalid char */
r = 8; /* octal */
}
} else {
if (c < '0' || c > '9') return 0; /* EOL or invalid char */
r = 10; /* decimal */
}
val = 0;
while (c > ' ') {
if (c >= 'a') c -= 0x20;
c -= '0';
if (c >= 17) {
c -= 7;
if (c <= 9) return 0; /* invalid char */
}
if (c >= r) return 0; /* invalid char for current radix */
val = val * r + c;
c = *(++(*str));
}
if (s) val = 0 - val; /* apply sign if needed */
*res = val;
return 1;
}
/*----------------------------------------------*/
/* Get a line from the input */
/*----------------------------------------------*/
int get_line ( /* 0:End of stream, 1:A line arrived */
char* buff, /* Pointer to the buffer */
int len /* Buffer length */
)
{
int rv, c, i;
rv = i = 0;
for (;;) {
c = xfunc_in(); /* Get a char from the incoming stream */
if (!c) return 0; /* End of stream? */
if (c == '\r') break; /* End of line? */
if (c == '\b' && i) { /* Back space? */
i--;
xputc(c);
xputc(' '); // mthomas
xputc(c); // mthomas
continue;
}
if (c >= ' ' && i < len - 1) { /* Visible chars */
buff[i++] = c;
xputc(c);
}
}
buff[i] = 0; /* Terminate with zero */
xputc('\n');
return 1;
}
#endif /* _USE_XFUNC_IN */
#if _USE_XSTRFUNC
/*----------------------------------------------*/
/* Simple string functions */
/*----------------------------------------------*/
int xstrlen (const char *str)
{
int n = 0;
while (*str++) n++;
return n;
}
char *xstrcpy (char* dst, const char* src)
{
char c, *d = dst;
do {
c = *src++;
*d++ = c;
} while (c);
return dst;
}
void *xmemset (void *p, int c, int sz)
{
char *pf = (char*)p;
while (sz--) *pf++ = (char)c;
return p;
}
char *xstrchr (/*const*/ char *str, int c)
{
while (*str) {
if (*str == (char)c) {
return (char*)str;
}
str++;
}
return 0;
}
#endif /* _USE_XSTRFUNC */