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* fix in to_bcd(), in case of odd len numbers 

* Added to_bcd_be/from_bcd_be for Big endian BCD representation


git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@217 7ae35d74-ebe9-4afe-98af-79ac388436b8
Hamlib-1.1.0
Stéphane Fillod, F8CFE 2000-10-16 21:53:22 +00:00
rodzic 9ff93fc219
commit 5cc97b8267
2 zmienionych plików z 57 dodań i 3 usunięć
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52
src/misc.c
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@ -6,7 +6,7 @@
* Provides useful routines for data handling, used by backend
* as well as by the frontend.
*
* $Id: misc.c,v 1.2 2000-10-08 21:43:00 f4cfe Exp $
* $Id: misc.c,v 1.3 2000-10-16 21:53:22 f4cfe Exp $
*
*
* This program is free software; you can redistribute it and/or
@ -143,8 +143,10 @@ to_bcd(unsigned char bcd_data[], unsigned long long freq, int bcd_len)
freq /= 10;
bcd_data[i] = a;
}
if (bcd_len&1)
if (bcd_len&1) {
bcd_data[i] &= 0xf0;
bcd_data[i] |= freq%10; /* NB: high nibble is left uncleared */
}
return bcd_data;
}
@ -173,6 +175,52 @@ unsigned long long from_bcd(const unsigned char bcd_data[], int bcd_len)
return f;
}
/*
* Same as to_bcd, but in Big Endian mode
*/
unsigned char *
to_bcd_be(unsigned char bcd_data[], unsigned long long freq, int bcd_len)
{
int i;
unsigned char a;
/* '450'-> 0,4;5,0 */
for (i=(bcd_len/2)-1; i >= 0; i--) {
a = freq%10;
freq /= 10;
a |= (freq%10)<<4;
freq /= 10;
bcd_data[i] = a;
}
if (bcd_len&1) {
bcd_data[0] &= 0xf0;
bcd_data[0] |= freq%10; /* NB: high nibble is left uncleared */
}
return bcd_data;
}
/*
* Same as from_bcd, but in Big Endian mode
*/
unsigned long long from_bcd_be(const unsigned char bcd_data[], int bcd_len)
{
int i;
freq_t f = 0;
if (bcd_len&1)
f = bcd_data[0] & 0x0f;
for (i=bcd_len&1; i < (bcd_len+1)/2; i++) {
f *= 10;
f += bcd_data[i]>>4;
f *= 10;
f += bcd_data[i] & 0x0f;
}
return f;
}
/*
* rig_set_debug

8
src/misc.h
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@ -6,7 +6,7 @@
* Provides useful routines for data handling, used by backends
* as well as by the frontend.
*
* $Id: misc.h,v 1.2 2000-10-08 21:43:41 f4cfe Exp $
* $Id: misc.h,v 1.3 2000-10-16 21:53:22 f4cfe Exp $
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -74,5 +74,11 @@ void dump_hex(const unsigned char ptr[], size_t size);
unsigned char *to_bcd(unsigned char bcd_data[], unsigned long long freq, int bcd_len);
unsigned long long from_bcd(const unsigned char bcd_data[], int bcd_len);
/*
* same as to_bcd and from_bcd, but in Big Endian mode
*/
unsigned char *to_bcd_be(unsigned char bcd_data[], unsigned long long freq, int bcd_len);
unsigned long long from_bcd_be(const unsigned char bcd_data[], int bcd_len);
#endif /* _MISC_H */