mirror of
git://projects.qi-hardware.com/ben-blinkenlights.git
synced 2024-11-23 22:11:53 +02:00
ubb-patgen/ubb-patgen.c: accept SI suffixes and a unit for durations as well
This commit is contained in:
parent
9930ae6576
commit
c124e1a819
@ -77,6 +77,11 @@ while and clean up on exit, add the delay in seconds, e.g.:
|
||||
|
||||
# ubb-patgen -f 500kHz -c 10
|
||||
|
||||
The delay can be followed by "m", "u", or "n" for the respective
|
||||
multiplier. Furthermore, it can end with an optional "s". Note
|
||||
that the minimum time ubb-patgen actually spends generating a
|
||||
clock will typically be in the order of several milliseconds.
|
||||
|
||||
To stop the MMC bus clock, run
|
||||
|
||||
# ubb-patgen -c 0
|
||||
|
@ -465,6 +465,9 @@ static int frequency(const char *s, int *hz, int *rel)
|
||||
|
||||
f = strtod(s, &end);
|
||||
|
||||
if (end == s || f < 0)
|
||||
return 0;
|
||||
|
||||
switch (*end) {
|
||||
case 'M':
|
||||
case 'm':
|
||||
@ -503,6 +506,49 @@ static int frequency(const char *s, int *hz, int *rel)
|
||||
}
|
||||
|
||||
|
||||
static int duration(const char *s, struct timespec *res)
|
||||
{
|
||||
char *end;
|
||||
double d;
|
||||
|
||||
d = strtod(s, &end);
|
||||
|
||||
if (end == s || d < 0)
|
||||
return 0;
|
||||
|
||||
switch (*end) {
|
||||
case 'M':
|
||||
case 'm':
|
||||
d /= 1e3;
|
||||
end++;
|
||||
break;
|
||||
case 'U':
|
||||
case 'u':
|
||||
d /= 1e6;
|
||||
end++;
|
||||
break;
|
||||
case 'N':
|
||||
case 'n':
|
||||
d /= 1e9;
|
||||
end++;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (*end == 'S' || *end == 's')
|
||||
end++;
|
||||
|
||||
if (*end)
|
||||
return 0;
|
||||
|
||||
res->tv_sec = d;
|
||||
res->tv_nsec = (d-res->tv_sec)*1e9;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void usage(const char *name)
|
||||
{
|
||||
fprintf(stderr,
|
||||
@ -523,10 +569,12 @@ static void usage(const char *name)
|
||||
" (default: exit immediately but leave the clock on)\n"
|
||||
" file file containing the pattern\n"
|
||||
" pattern send the specified pattern on DAT0 through DAT3\n\n"
|
||||
"Frequency: the frequency in Hz, optionally followed by \"M\" or \"k\",\n"
|
||||
"Frequency: the frequency in hertz, optionally followed by \"M\" or \"k\",\n"
|
||||
" optionally followed by \"Hz\", optionally followed by \"+\" or \"-\".\n"
|
||||
" \"+\" selects a frequency >= the specified one, \"-\" one <=.\n"
|
||||
" Without +/-, the closest available frequency is selected.\n"
|
||||
"Duration: the duration in seconds, optionally followed by \"m\", \"u\", or\n"
|
||||
" \"n\", optionally followed by \"s\".\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);
|
||||
@ -540,7 +588,6 @@ int main(int argc, char **argv)
|
||||
int bus_hz = 0, clk_only = 0, clkout = 0, bus_rel = 0;
|
||||
const char *pattern = NULL;
|
||||
int quiet = 0, force_pattern = 0;
|
||||
double active_s = 0;
|
||||
struct timespec active_ns;
|
||||
int keep_clk = 1;
|
||||
uint8_t mask = 0xf;
|
||||
@ -617,11 +664,8 @@ int main(int argc, char **argv)
|
||||
if (clk_only) {
|
||||
if (force_pattern)
|
||||
usage(*argv);
|
||||
active_s = strtod(argv[argc-1], &end);
|
||||
if (*end)
|
||||
if (!duration(argv[optind], &active_ns))
|
||||
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];
|
||||
@ -653,7 +697,7 @@ int main(int argc, char **argv)
|
||||
if (pattern)
|
||||
dma_pattern(&clk, pattern, mask << 10, trigger);
|
||||
|
||||
if (active_s)
|
||||
if (!keep_clk)
|
||||
if (nanosleep(&active_ns, NULL))
|
||||
perror("nanosleep");
|
||||
if (pattern) {
|
||||
|
Loading…
Reference in New Issue
Block a user