error bound.
- cntr/tools/cntr/cntr.c (measure): use the middle of a round-trip interval
for the sample's nominal time
- cntr/tools/cntr/cntr.c (measure): error bound is only +/- RTT/2, not
+/- RTT
- cntr/README: description of the counter board and its application
- cntr/fw/common/crc32.c: variant of CRC32-IEEE802.3 shared by firmware and
measurement application
- cntr/fw/cntr/ep0.c (my_setup), cntr/tools/cntr/cntr.c (get_sample):
protect the counter value with a CRC and an one's complement copy
- cntr/fw/include/cntr/ep0.h: oops, wasn't checked into repository
- cntr/tools/cntr/cntr.c: added section titles
- cntr/tools/cntr/cntr.c (measure): show communication statistics at the end
- cntr/tools/cntr/cntr.c (measure, usage, main): new option -d to enable
reporting of communication errors
- cntr/tools/cntr/cntr.c (set_stop, measure): let user stop measurement with
SIGINT
- cntr/tools/cntr/cntr.c (measure): get multiple "first samples" and keep
the one with the shortest round-trip time
- cntr/tools/cntr/cntr.c (measure): changed unit "ppk" (1/1000) to percent
(1/100)
- cntr/tools/cntr/cntr.c (usage, main): command-line argument is now the
accuracy goal, while the system clock deviation is set with the new
option -c
- TODO: some more things to do
- cntr/tools/Makefile: the usual recursive Makefile
- cntr/tools/cntr/Makefile, cntr/tools/cntr/cntr.c: user-space tool to
periodically read the free-running counter and to calculate frequency
and deviation from it
quite formidable low-pass filter that almost completely eliminated the
1 MHz signal.
- cntr/cntr.sch, cntr/cntr.brd: changed R1 from 100k to 1k to increase
input bandwidth
- TODO: "cntr" now makes it to DFU and beyond
- atrf/fw/common/config.h (PLATFORM_SETUP): rename to PLATFORM_ENTER
- cntr/fw/common/config.h (PLATFORM_SETUP): rename to PLATFORM_ENTER and
make the new PLATFORM_SETUP turn off the watchdog
