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ubb-patgen/ubb-patgen.c: clean up usage (-c selects clkout only; -C to monitor)

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... and active_s is no longer used with a pattern.
This commit is contained in:
Werner Almesberger 2013-01-15 14:08:38 -03:00
parent 72f2125287
commit 6e6767175f
1 changed files with 38 additions and 26 deletions
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46
ubb-patgen/ubb-patgen.c
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@ -275,13 +275,8 @@ static void mmc_buffer(const struct mmcclk *clk,
* well-defined state.
*/
MSC_STRPCL = 1 << 3; /* reset the MSC */
while (MSC_STAT & (1 << 15)); /* wait until reset finishes */
dma_setup(buf, nibbles);
MSC_CLKRT = clk->clkrt; /* cleared by MSC reset */
MSC_STRPCL = 2; /* start the bus clock */
MSC_RESTO = 0xffff; /* maximum response time-out */
MSC_BLKLEN = 0xfff; /* never reach the end (with CRC) */
@ -448,12 +443,15 @@ static void usage(const char *name)
{
fprintf(stderr,
"usage: %s\n"
"usage: %s [-b freq_hz] [-f freq_hz] [-c] [-q] [pattern] active_s\n\n"
" %s [-b freq_hz] [-f freq_hz] -c [-q] [active_s]\n"
" %s [-b freq_hz] [-f freq_hz] [-C] [-q] pattern\n\n"
" -b freq_hz set bus clock to the specified frequency (default: 1 MHz)\n"
" -c output bus clock on CLK\n"
" -c output bus clock on CLK without sending a pattern\n"
" -C temporarily output bus clock on CLK (for debugging)\n"
" -f freq_hz set pattern rate (default: same as bus clock)\n"
" -q quiet. Don't report clock differences.\n\n"
" active_s keep running that many seconds after setting the clock\n"
" (default: exit immediately but leave the clock on)\n"
" pattern send the specified pattern on DAT0 through DAT3\n\n"
"Frequency: the frequency in Hz, optionally followed by \"M\" or \"k\",\n"
" optionally followed by \"Hz\", optionally followed by \"+\" or \"-\".\n"
@ -461,7 +459,7 @@ static void usage(const char *name)
" Without +/-, the closest available frequency is selected.\n"
"Pattern: hex digits corresponding to 1 for DAT0, 2 for DAT1, etc.\n"
" {n} repeats the preceding digit n times, e.g., 1{3} is equivalent to 111.\n"
, name, name);
, name, name, name);
exit(1);
}
@ -469,16 +467,17 @@ static void usage(const char *name)
int main(int argc, char **argv)
{
struct mmcclk clk;
int bus_hz = 0, clkout = 0, bus_rel = 0;
int bus_hz = 0, clk_only = 0, clkout = 0, bus_rel = 0;
int pattern_hz = 0, pattern_rel = 0;
const char *pattern = NULL;
int quiet = 0;
double active_s;
double active_s = 0;
struct timespec active_ns;
int keep_clk = 1;
char *end;
int c;
while ((c = getopt(argc, argv, "b:cq")) != EOF)
while ((c = getopt(argc, argv, "b:cCq")) != EOF)
switch (c) {
case 'b':
if (!frequency(optarg, &bus_hz, &bus_rel))
@ -489,6 +488,9 @@ int main(int argc, char **argv)
usage(*argv);
break;
case 'c':
clk_only = 1;
/* fall through */
case 'C':
clkout = 1;
break;
case 'q':
@ -500,20 +502,24 @@ int main(int argc, char **argv)
switch (argc-optind) {
case 0:
if (clkout || quiet)
if (clk_only)
break;
if (bus_hz || pattern_hz || clkout || quiet)
usage(*argv);
ubb_open(UBB_ALL);
show_frequencies();
return 1;
case 2:
pattern = argv[optind];
/* fall through */
case 1:
if (clk_only) {
active_s = strtod(argv[argc-1], &end);
if (*end)
usage(*argv);
active_ns.tv_sec = (int) active_s;
active_ns.tv_nsec = (active_s-(int) active_s)*1e9;
keep_clk = 0;
} else {
pattern = argv[optind];
}
break;
default:
usage(*argv);
@ -550,12 +556,18 @@ int main(int argc, char **argv)
dma_pattern(&clk, pattern,
UBB_DAT0 | UBB_DAT1 | UBB_DAT2 | UBB_DAT3);
if (active_s)
if (nanosleep(&active_ns, NULL))
perror("nanosleep");
if (pattern) {
mmcclk_stop();
ubb_close(UBB_DAT0 | UBB_DAT1 | UBB_DAT2 | UBB_DAT3);
} else if (keep_clk) {
ubb_close(UBB_CLK);
} else {
mmcclk_stop();
ubb_close(0);
}
return 0;
}