GPIOOW(4) - Device Drivers Manual # GPIOOW(4) - Device Drivers Manual NAME # gpioow - 1-Wire bus bit-banging through GPIO pin SYNOPSIS # gpioow* at gpio? offset 0 mask 0x1 gpioow* at gpio? onewire* at gpioow? DESCRIPTION # The gpioow driver allows bit-banging a 1-Wire bus as a master using one GPIO pin. The pin is used as a data signal. The GPIO pin must be able to drive an output and read an input. ...
ONEWIRE(4) - Device Drivers Manual # ONEWIRE(4) - Device Drivers Manual NAME # onewire - 1-Wire bus SYNOPSIS # onewire* at gpioow? onewire* at uow? option ONEWIREVERBOSE DESCRIPTION # 1-Wire bus was originally developed by Dallas Semiconductor for connecting integrated circuits. It is commonly used for connecting devices such as electronic keys, EEPROMs, temperature sensors, real-time clocks, security chips, etc. The onewire driver provides a uniform programming interface layer between 1-Wire master controllers and various 1-Wire slave devices. ...
OWCTR(4) - Device Drivers Manual # OWCTR(4) - Device Drivers Manual NAME # owctr - 1-Wire counter device SYNOPSIS # owctr* at onewire? DESCRIPTION # The owctr driver provides support for the externally triggered counters on the DS2423 chip. The supported chip contains a 4096-bit SRAM and four 32-bit counters. The two externally triggered counters are accessible by the sysctl(8) interface. The following chips are supported by the driver: ...
OWID(4) - Device Drivers Manual # OWID(4) - Device Drivers Manual NAME # owid - 1-Wire ID device SYNOPSIS # owid* at onewire? DESCRIPTION # The owid driver provides support for the 1-Wire serial number family type device. This device can’t do anything except report its unique serial number. The serial number is available through the sysctl(8) interface. The following chips are supported by the driver: Maxim/Dallas DS1990 SEE ALSO # intro(4), onewire(4), sysctl(8) ...
OWSBM(4) - Device Drivers Manual # OWSBM(4) - Device Drivers Manual NAME # owsbm - 1-Wire smart battery monitor device SYNOPSIS # owsbm* at onewire? DESCRIPTION # The owsbm driver provides support for the 1-Wire smart battery monitor. The sensor possesses a temperature sensor, an A/D converter for measuring both battery voltage and current, a current accumulator of both incoming and outgoing current, an elapsed time and 40 bytes of nonvolatile EEPROM. ...
OWTEMP(4) - Device Drivers Manual # OWTEMP(4) - Device Drivers Manual NAME # owtemp - 1-Wire temperature device SYNOPSIS # owtemp* at onewire? DESCRIPTION # The owtemp driver provides support for the 1-Wire temperature sensor. The sensor possesses a single temperature value that can be accessed through the sysctl(8) interface. The following chips are supported by the driver: Maxim/Dallas DS1820/DS18B20/DS18S20/DS1822 Maxim/Dallas DS1920 SEE ALSO # intro(4), onewire(4), sysctl(8) HISTORY # The owtemp driver first appeared in OpenBSD 4. ...
UOW(4) - Device Drivers Manual # UOW(4) - Device Drivers Manual NAME # uow - Maxim/Dallas DS2490 USB 1-Wire adapter SYNOPSIS # uow* at uhub? onewire* at uow? DESCRIPTION # The uow driver provides support for the Maxim/Dallas DS2490 USB 1-Wire adapter. The following adapters should work: iButton DS9490/DS9490B/DS9490R SEE ALSO # intro(4), onewire(4) HISTORY # The uow driver first appeared in OpenBSD 4.1. AUTHORS # The uow driver was written by Alexander Yurchenko <grange@openbsd. ...