suspect-devices/circuitpython/drivers/dht/dht.c, branch v1.9.1CircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.9.12017-02-05T11:20:17+00:00extmod/machine_pulse: Make time_pulse_us() not throw exceptions.2017-02-05T11:20:17+00:00Paul Sokolovskypfalcon@users.sourceforge.net2017-02-05T11:20:17+00:00urn: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.
driver/dht: Use mp_raise_OSError helper function.2016-10-07T02:53:34+00:00Damien Georgedamien.p.george@gmail.com2016-10-07T02:53:34+00:00urn:sha1:e3d29996b3d0b1a81bd3dcc1d139e0a6ee233b03extmod: Add machine time_pulse_us function (at C and Python level).2016-05-31T12:58:48+00:00Damien Georgedamien.p.george@gmail.com2016-05-31T12:58:48+00:00urn:sha1:4940bee62a636f7e2653a4d4eeac5071448addc0
The C implementation is taken from the DHT driver.
drivers: Add C-level function to read DHT11 and DHT22 devices.2016-05-26T16:10:06+00:00Damien Georgedamien.p.george@gmail.com2016-05-26T16:10:06+00:00urn:sha1:48a7ef0576f9c1cb71a07d1c01183b3872e2f762
Uses mp_hal_pin API.