CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=5.0.0-beta.3 2017-02-05T11:20:17+00:00 2017-02-05T11:20:17+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2017-02-05T11:20:17+00:00 urn:sha1:d5e9ab6e61729f533dbed5c2b6b27307ce6c3b55 machine.time_pulse_us() is intended to provide very fine timing, including while working with signal bursts, where each transition is tracked in row. Throwing and handling an exception may take too much time and "signal loss". So instead, in case of a timeout, just return negative value. Cases of timeout while waiting for initial signal stabilization, and during actual timing, are recognized. The documentation is updated accordingly, and rewritten somewhat to clarify the function behavior. 2016-10-07T02:52:14+00:00 Damien George damien.p.george@gmail.com 2016-10-07T02:52:14+00:00 urn:sha1:75af908c0ec2a0d47e6aded15b35cd630f93d48b 2016-05-31T13:25:19+00:00 Damien George damien.p.george@gmail.com 2016-05-31T13:25:19+00:00 urn:sha1:33168081f48634d45902f0a31a27d4527c88a522 Since not all ports that enable the machine module have the pin HAL functions. 2016-05-31T12:58:48+00:00 Damien George damien.p.george@gmail.com 2016-05-31T12:58:48+00:00 urn:sha1:4940bee62a636f7e2653a4d4eeac5071448addc0 The C implementation is taken from the DHT driver.