Programmable signal generator

*** DRAFT ***

This page documents the config keys are various other info needed to write a libsigrok frontend for controlling programmable signal generators (or arbitrary waveform generators).

TODO

• Some way to cleanly implement frequency counter device in same driver...

Notes

It is common for different signal modes (sine, square, pulse, ...) have different limits.

Config keys

A libsigrok driver for a programmable signal generator implements all or some subset of the following config keys.

SR_CONF_SIGNAL_GENERATOR

Denotes a device that provides programmable signal output via one or more output channels, typically with frequency, amplitude, offset, and phase set via the sigrok driver.

SR_CONF_ENABLED

• boolean
• get: Actual state of output
• set: Turn output on or off
• list: NA

SR_CONF_PATTERN_MODE

• string, pattern generation mode ("Sine", "Square", "Ramp", "Pulse", "Noise", "Arb")
• get: The current output signal pattern (mode).
• set: Set the output signal pattern (mode).
• list: List of supported modes.

SR_CONF_OUTPUT_FREQUENCY

• double, representing frequency of output signal
• get: The current output frequency.
• set: Set the target output frequency.
• list: Supported frequency range as (low, high, step). NOTE! This can change if channel mode is changed.

SR_CONF_AMPLITUDE

• double, representing output signal amplitude (Vpp)
• get: The current output signal amplitude.
• set: Set the output signal amplitude.
• list: Supported amplitude range as (low, high, step).

SR_CONF_OFFSET

• double, representing output signal DC offset (Vdc)
• get: The current output signal offset.
• set: Set the output signal offset.
• list: Supported offset range as (low, high, step).

SR_CONF_PHASE (NEW)

• double, representing output signal phase (degrees)
• get: The current output signal phase.
• set: Set the output signal phase.
• list: Supported phase range as (low, high, step).