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Remove the "safemode" feature.

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This feature has been designed with the sometimes quite flakey direct
(parallel or serial port attached) bitbang programming adapters in
mind that were quite common about two decades ago.

With parallel ports vanishing from modern PCs almost completely, and
the advent of various USB-attached low-cost programming devices,
this class of programmers disappeared almost completely.

Furthermore, the fuse combinations that were covered by the feature
are no longer around on all recent AVR devices, so for an ever
increasing number of devices, safemode already became meaningless and
was turned off anyway.

With the prospective version 7.x release, it's a good point in time to
introduce a major change like this one.
This commit is contained in:
Joerg Wunsch
2022-01-31 20:44:32 +01:00
parent e28e28d7c3
commit 8c6c6a14ec
13 changed files with 5 additions and 688 deletions
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25
src/libavrdude.h
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@@ -831,30 +831,6 @@ int fileio(int op, char * filename, FILEFMT format,
#endif
/* formerly safemode.h */
#ifdef __cplusplus
extern "C" {
#endif
/* Writes the specified fuse in fusename (can be "lfuse", "hfuse", or "efuse") and verifies it. Will try up to tries
amount of times before giving up */
int safemode_writefuse (unsigned char fuse, char * fusename, PROGRAMMER * pgm, AVRPART * p, int tries);
/* Reads the fuses three times, checking that all readings are the same. This will ensure that the before values aren't in error! */
int safemode_readfuses (unsigned char * lfuse, unsigned char * hfuse, unsigned char * efuse, unsigned char * fuse, PROGRAMMER * pgm, AVRPART * p);
/* This routine will store the current values pointed to by lfuse, hfuse, and efuse into an internal buffer in this routine
when save is set to 1. When save is 0 (or not 1 really) it will copy the values from the internal buffer into the locations
pointed to be lfuse, hfuse, and efuse. This allows you to change the fuse bits if needed from another routine (ie: have it so
if user requests fuse bits are changed, the requested value is now verified */
int safemode_memfuses (int save, unsigned char * lfuse, unsigned char * hfuse, unsigned char * efuse, unsigned char * fuse);
#ifdef __cplusplus
}
#endif
/* formerly update.h */
enum {
@@ -926,7 +902,6 @@ extern char default_programmer[];
extern char default_parallel[];
extern char default_serial[];
extern double default_bitclock;
extern int default_safemode;
/* This name is fixed, it's only here for symmetry with
* default_parallel and default_serial. */