srf04.c: add maxbotix ultrasonic sensors

add Maxbotix LV ultrasonic sensor types mb1000, mb1010, mb1020, mb1030
and mb1040

add a configuration struct with the different trigger pulse lengths

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Andreas Klinger 2019-04-09 21:10:22 +02:00 • committed by Jonathan Cameron
commit bb208037ae