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Add support for displaying and changing the various STK500 operational

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parameters.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@336 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch
2003-07-24 21:26:28 +00:00
parent f621ec980e
commit 4e704ad695
9 changed files with 458 additions and 7 deletions
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246
stk500.c
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@@ -47,7 +47,8 @@ extern int do_cycles;
static int stk500_getparm(PROGRAMMER * pgm, unsigned parm, unsigned * value);
static int stk500_setparm(PROGRAMMER * pgm, unsigned parm, unsigned value);
static void stk500_print_parms1(PROGRAMMER * pgm, char * p);
static int stk500_send(PROGRAMMER * pgm, char * buf, size_t len)
{
@@ -538,7 +539,19 @@ static int stk500_initialize(PROGRAMMER * pgm, AVRPART * p)
}
}
return pgm->program_enable(pgm, p);
pgm->program_enable(pgm, p);
/*
* Return success even if program_enable() failed. Otherwise, if
* someone has turned off the STK500 oscillator (or set it to an
* unreasonably slow master clock), they were hosed at this point,
* since to reset fosc to a reasonable value, they at least need to
* get avrdude to start up in terminal mode. The luser has already
* seen a "failed to enter programming mode" message in that case,
* and he also needs to specify -F at program startup since the
* device ID bytes cannot be read in this situation.
*/
return 0;
}
@@ -874,6 +887,107 @@ static int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
}
static int stk500_set_vtarget(PROGRAMMER * pgm, double v)
{
unsigned uaref, utarg;
utarg = (unsigned)((v + 0.049) * 10);
if (stk500_getparm(pgm, Parm_STK_VADJUST, &uaref) != 0) {
fprintf(stderr,
"%s: stk500_set_vtarget(): cannot obtain V[aref]\n",
progname);
return -1;
}
if (uaref > utarg) {
fprintf(stderr,
"%s: stk500_set_vtarget(): reducing V[aref] from %.1f to %.1f\n",
progname, uaref / 10.0, v);
if (stk500_setparm(pgm, Parm_STK_VADJUST, utarg)
!= 0)
return -1;
}
return stk500_setparm(pgm, Parm_STK_VTARGET, utarg);
}
static int stk500_set_varef(PROGRAMMER * pgm, double v)
{
unsigned uaref, utarg;
uaref = (unsigned)((v + 0.049) * 10);
if (stk500_getparm(pgm, Parm_STK_VTARGET, &utarg) != 0) {
fprintf(stderr,
"%s: stk500_set_varef(): cannot obtain V[target]\n",
progname);
return -1;
}
if (uaref > utarg) {
fprintf(stderr,
"%s: stk500_set_varef(): V[aref] must not be greater than "
"V[target] = %.1f\n",
progname, utarg / 10.0);
return -1;
}
return stk500_setparm(pgm, Parm_STK_VADJUST, uaref);
}
static int stk500_set_fosc(PROGRAMMER * pgm, double v)
{
#define fbase 7372800U
unsigned prescale, cmatch, fosc;
static unsigned ps[] = {
1, 8, 32, 64, 128, 256, 1024
};
int idx, rc;
if (v <= 0.0) {
prescale = cmatch = 0;
goto setclock;
}
if (v > fbase / 2) {
const char *unit;
if (v > 1e6) {
v /= 1e6;
unit = "MHz";
} else if (v > 1e3) {
v /= 1e3;
unit = "kHz";
} else
unit = "Hz";
fprintf(stderr,
"%s: stk500_set_fosc(): f = %.3f %s too high, using %.3f MHz\n",
progname, v, unit, fbase / 2e6);
fosc = fbase / 2;
} else
fosc = (unsigned)v;
for (idx = 0; idx < sizeof(ps) / sizeof(ps[0]); idx++) {
if (fosc >= fbase / (256 * ps[idx] * 2)) {
/* this prescaler value can handle our frequency */
prescale = idx + 1;
cmatch = (unsigned)(fbase / (2 * v * ps[idx]));
break;
}
}
if (idx == sizeof(ps) / sizeof(ps[0])) {
fprintf(stderr, "%s: stk500_set_fosc(): f = %u Hz too low, %u Hz min\n",
progname, fosc, fbase / (256 * 1024 * 2));
return -1;
}
setclock:
if ((rc = stk500_setparm(pgm, Parm_STK_OSC_PSCALE, prescale)) != 0
|| (rc = stk500_setparm(pgm, Parm_STK_OSC_CMATCH, cmatch)) != 0)
return rc;
return 0;
}
static int stk500_getparm(PROGRAMMER * pgm, unsigned parm, unsigned * value)
{
unsigned char buf[16];
@@ -930,21 +1044,141 @@ static int stk500_getparm(PROGRAMMER * pgm, unsigned parm, unsigned * value)
}
static int stk500_setparm(PROGRAMMER * pgm, unsigned parm, unsigned value)
{
unsigned char buf[16];
int tries = 0;
retry:
tries++;
buf[0] = Cmnd_STK_SET_PARAMETER;
buf[1] = parm;
buf[2] = value;
buf[3] = Sync_CRC_EOP;
stk500_send(pgm, buf, 4);
stk500_recv(pgm, buf, 1);
if (buf[0] == Resp_STK_NOSYNC) {
if (tries > 33) {
fprintf(stderr, "\n%s: stk500_setparm(): can't get into sync\n",
progname);
return -1;
}
stk500_getsync(pgm);
goto retry;
}
else if (buf[0] != Resp_STK_INSYNC) {
fprintf(stderr,
"\n%s: stk500_setparm(): (a) protocol error, "
"expect=0x%02x, resp=0x%02x\n",
progname, Resp_STK_INSYNC, buf[0]);
return -2;
}
stk500_recv(pgm, buf, 1);
if (buf[0] == Resp_STK_OK)
return 0;
parm = buf[0]; /* if not STK_OK, we've been echoed parm here */
stk500_recv(pgm, buf, 1);
if (buf[0] == Resp_STK_FAILED) {
fprintf(stderr,
"\n%s: stk500_setparm(): parameter 0x%02x failed\n",
progname, parm);
return -3;
}
else {
fprintf(stderr,
"\n%s: stk500_setparm(): (a) protocol error, "
"expect=0x%02x, resp=0x%02x\n",
progname, Resp_STK_INSYNC, buf[0]);
return -3;
}
}
static void stk500_display(PROGRAMMER * pgm, char * p)
{
unsigned maj, min, hdw;
unsigned maj, min, hdw, topcard;
stk500_getparm(pgm, Parm_STK_HW_VER, &hdw);
stk500_getparm(pgm, Parm_STK_SW_MAJOR, &maj);
stk500_getparm(pgm, Parm_STK_SW_MINOR, &min);
stk500_getparm(pgm, Param_STK500_TOPCARD_DETECT, &topcard);
fprintf(stderr, "%sHardware Version: %d\n", p, hdw);
fprintf(stderr, "%sFirmware Version: %d.%d\n", p, maj, min);
if (topcard < 3) {
const char *n = "Unknown";
switch (topcard) {
case 1:
n = "STK502";
break;
case 2:
n = "STK501";
break;
}
fprintf(stderr, "%sTopcard : %s\n", p, n);
}
stk500_print_parms1(pgm, p);
return;
}
static void stk500_print_parms1(PROGRAMMER * pgm, char * p)
{
unsigned vtarget, vadjust, osc_pscale, osc_cmatch;
stk500_getparm(pgm, Parm_STK_VTARGET, &vtarget);
stk500_getparm(pgm, Parm_STK_VADJUST, &vadjust);
stk500_getparm(pgm, Parm_STK_OSC_PSCALE, &osc_pscale);
stk500_getparm(pgm, Parm_STK_OSC_CMATCH, &osc_cmatch);
fprintf(stderr, "%sVtarget : %.1f V\n", p, vtarget / 10.0);
fprintf(stderr, "%sVaref : %.1f V\n", p, vadjust / 10.0);
fprintf(stderr, "%sOscillator : ", p);
if (osc_pscale == 0)
fprintf(stderr, "Off\n");
else {
int prescale = 1;
double f = 3.6864e6;
const char *unit;
switch (osc_pscale) {
case 2: prescale = 8; break;
case 3: prescale = 32; break;
case 4: prescale = 64; break;
case 5: prescale = 128; break;
case 6: prescale = 256; break;
case 7: prescale = 1024; break;
}
f /= prescale;
f /= (osc_cmatch + 1);
if (f > 1e6) {
f /= 1e6;
unit = "MHz";
} else if (f > 1e3) {
f /= 1000;
unit = "kHz";
} else
unit = "Hz";
fprintf(stderr, "%.3f %s\n", f, unit);
}
return;
}
static void stk500_print_parms(PROGRAMMER * pgm)
{
stk500_print_parms1(pgm, "");
}
void stk500_initpgm(PROGRAMMER * pgm)
{
strcpy(pgm->type, "STK500");
@@ -975,7 +1209,9 @@ void stk500_initpgm(PROGRAMMER * pgm)
*/
pgm->paged_write = stk500_paged_write;
pgm->paged_load = stk500_paged_load;
pgm->print_parms = stk500_print_parms;
pgm->set_vtarget = stk500_set_vtarget;
pgm->set_varef = stk500_set_varef;
pgm->set_fosc = stk500_set_fosc;
pgm->page_size = 256;
}