Comment #2 on issue 83 by jsuijs: delay.jal accuracy varies http://code.google.com/p/jallib/issues/detail?id=83
first results: Target clock: 1000000 ---------------------------- Test us delays Test 0 us, measured 0 us Test 1 us, measured 4 us Test 2 us, measured 4 us Test 5 us, measured 8 us Test 9 us, measured 12 us Test 10us delays Test 10 us, measured 76 us Test 20 us, measured 104 us Test 50 us, measured 312 us Test 100 us, measured 472 us Test 200 us, measured 792 us Test 500 us, measured 1752 us Test 1000 us, measured 3352 us Test 2000 us, measured 6552 us Test 1ms delays Test 1000 us, measured 1088 us Test 2000 us, measured 2080 us Test 5000 us, measured 5152 us Target clock: 4000000 ---------------------------- Test us delays Test 0 us, measured 0 us Test 1 us, measured 1 us Test 2 us, measured 2 us Test 5 us, measured 5 us Test 9 us, measured 9 us Test 10us delays Test 10 us, measured 24 us Test 20 us, measured 38 us Test 50 us, measured 108 us Test 100 us, measured 178 us Test 200 us, measured 318 us Test 500 us, measured 738 us Test 1000 us, measured 1438 us Test 2000 us, measured 2838 us Test 1ms delays Test 1000 us, measured 1016 us Test 2000 us, measured 2016 us Test 5000 us, measured 5016 us Test 10000 us, measured 10024 us Test 20000 us, measured 20040 us Target clock: 8000000 ---------------------------- Test us delays Test 0 us, measured 0 us Test 1 us, measured 1 us Test 2 us, measured 2 us Test 5 us, measured 5 us Test 9 us, measured 9 us Test 10us delays Test 10 us, measured 16 us Test 20 us, measured 27 us Test 50 us, measured 74 us Test 100 us, measured 129 us Test 200 us, measured 239 us Test 500 us, measured 569 us Test 1000 us, measured 1119 us Test 2000 us, measured 2219 us Test 1ms delays Test 1000 us, measured 1004 us Test 2000 us, measured 2004 us Test 5000 us, measured 4996 us Test 10000 us, measured 9988 us Test 20000 us, measured 19964 us Target clock: 20000000 ---------------------------- Test us delays Test 0 us, measured 0 us Test 1 us, measured 1 us Test 2 us, measured 2 us Test 5 us, measured 5 us Test 9 us, measured 9 us Test 10us delays Test 10 us, measured 10 us Test 20 us, measured 20 us Test 50 us, measured 54 us Test 100 us, measured 100 us Test 200 us, measured 192 us Test 500 us, measured 468 us Test 1000 us, measured 928 us Test 2000 us, measured 1848 us Test 1ms delays Test 1000 us, measured 1000 us Test 2000 us, measured 1995 us Test 5000 us, measured 4982 us Test 10000 us, measured 9965 us Test 20000 us, measured 19928 us So pretty good from ms and up; 10us() could be better. Would 1, 4, 8 and 20 MHz be good measure / calibration points? Or would just 20 and 8 be enough? (Seb: chang of clock speed is not supported - target_clock definition determines delay). -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/jallib?hl=en -~----------~----~----~----~------~----~------~--~---
