utilities for controlling a Maxim DS1077L programmable oscillator
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# Background The Maxim DS1077L oscillator is attached to the I2C bus as a slave. It has 3 registers that we can set to define its behavior. For details on the structure of these registers and how they effect the behavior of the device consult the spec sheet. # Overview This is a collection of utilities for getting and setting the state of these registers. Each utility is specific to a register. To identify the DS1077L that we're operating on, each utility takes an optional --address and --bus-dev argument. The DS1077L uses a 7 bit I2C bus address. The top 4 bits are hard wired to '1011' and the lower 3 bits can be programmed to work around address conflicts. Given this, the --address parameter must be in the range 0x58 - 0x5f. The --bus-dev option specifies the device node associated with the I2C bus the DS1077L is attached. This is typically represented by a device node under /dev. Additionally each utility takes a --get or a --set parameter to specify whether the user wishes to display or set the state of a register. To get the register state the user must specify the --get option. To set the register state the user must specify the --set option along with a series of options specific to the register that define the register state. For a description of the parameters taken by each utility consult the usage message through the --help option. # Building These utilities are specific to Linux and depend on the Linux I2C userspace headers. On Debian these are available through the libi2c-dev package. Once these are installed the ds1077l-ctrl tools are built with the typical make commands: $ make $ sudo make install