GPIO bitbanged ultrasonic ranger sensor (SRF04, MB1000)

modulename: srf04.ko

configname: CONFIG_SRF04

Linux Kernel Configuration
└─>Device Drivers
└─>Industrial I/O support
└─>Proximity and distance sensors
└─>GPIO Support
└─>GPIO bitbanged ultrasonic ranger sensor (SRF04, MB1000)
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here to build a driver for GPIO bitbanged ultrasonic
ranger sensor. This driver can be used to measure the distance
of objects. It is using two GPIOs.
Actually Supported types are:
- Devantech SRF04
- Maxbotix mb1000
- Maxbotix mb1010
- Maxbotix mb1020
- Maxbotix mb1030
- Maxbotix mb1040

To compile this driver as a module, choose M here: the
module will be called srf04.

source code: