Date: | 2013-01-27 22:23:38 (11 years 2 months ago) |
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Author: | Werner Almesberger |
Commit: | 4ffd61093b41e8f1e6d09dfcf1845a397116d1b5 |
Message: | ubb-la/ubb-la.c (do_bufs): don't skip 122 nibbled (for evaluation) A series of measurements of A# ./ubb-patgen -f 41kHz 1 A# ./ubb-patgen -f 41kHz -c B# ./ubb-la -f 12 -n 10 yielded these results: 1 3 gap 2 0 1 3 ------- ------- ------- ------- ------- ------- ------- 106 77 11 98 120 78 11 83 134 79 11 68 3 79 11 53 18 78 11 39 33 78 11 24 47 79 11 9 62 79 5 6 140 147 77 79 11 125 147 Where for example the last entry corresponds to ...1{146}3{77} 0{11}1{125}3{147}... Since this looks as if DAT1 was 1 for 77 samples before the first capture ended, was 0 throughout the pulling low of DAT0 (11 cycles), stayed low for another 125 cycles, and then went high for the 146.29 nominal half-period, we thus get a gap length of 2*146-77-11-125 = 79 |
Files: |
ubb-la/ubb-la.c (1 diff) |
Change Details
ubb-la/ubb-la.c | ||
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309 | 309 | xfers(addrs, n_bufs, nibbles); |
310 | 310 | |
311 | 311 | for (i = 0; i != n_bufs; i++) |
312 | print_samples(stdout, bufs[i], INITIAL_SKIP, nibbles); | |
312 | print_samples(stdout, bufs[i], 0, nibbles); | |
313 | 313 | } |
314 | 314 | |
315 | 315 |
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