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ubb-patgen/ubb-patgen.c: "ubb-patgen -f FREQ" calculates the frequency
This can then be used by generators to generate an oversampled pattern.
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@ -443,8 +443,9 @@ static void usage(const char *name)
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{
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fprintf(stderr,
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"usage: %s\n"
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" %s [-f freq_hz] -c [-q] [active_s]\n"
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" %s [-f freq_hz] [-C] [-q] pattern\n\n"
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" %s -f freq_hz\n"
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" %s [-f freq_hz] [-q] -c [active_s]\n"
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" %s [-f freq_hz] [-q] [-C] pattern\n\n"
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" -c output bus clock on CLK without sending a pattern\n"
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" -C temporarily output bus clock on CLK (for debugging)\n"
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" -f freq_hz set bus clock to the specified frequency (default: 1 MHz)\n"
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@ -458,7 +459,7 @@ static void usage(const char *name)
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" Without +/-, the closest available frequency is selected.\n"
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"Pattern: hex digits corresponding to 1 for DAT0, 2 for DAT1, etc.\n"
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" {n} repeats the preceding digit n times, e.g., 1{3} is equivalent to 111.\n"
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, name, name, name);
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, name, name, name, name);
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exit(1);
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}
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@ -483,7 +484,7 @@ int main(int argc, char **argv)
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break;
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case 'c':
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clk_only = 1;
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/* fall through */
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break;
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case 'C':
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clkout = 1;
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break;
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@ -494,15 +495,28 @@ int main(int argc, char **argv)
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usage(*argv);
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}
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if (clkout && clk_only)
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usage(*argv);
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switch (argc-optind) {
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case 0:
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if (clk_only)
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break;
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if (bus_hz || clkout || quiet)
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if (clkout || quiet)
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usage(*argv);
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ubb_open(UBB_ALL);
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show_frequencies();
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return 1;
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if (bus_hz) {
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if (!select_freq(&clk, bus_hz, bus_rel)) {
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fprintf(stderr,
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"no suitable frequency found\n");
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exit(1);
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}
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printf("%f\n", clk.bus_clk_hz);
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} else {
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show_frequencies();
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}
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return 0;
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case 1:
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if (clk_only) {
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active_s = strtod(argv[argc-1], &end);
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@ -542,7 +556,7 @@ int main(int argc, char **argv)
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fprintf(stderr, " (%+d ppm)\n", (int) (err*1000000));
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}
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if (clkout)
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if (clkout || clk_only)
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PDFUNS = UBB_CLK;
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mmcclk_start(&clk);
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