This modules does jitter measurement on incoming trigger device pulses.

Configuration

- name: jitter_1
  so_file: libmodule_jitter_measurement.so
  config:
    buffer_size: 1000
  trigger:
  - dev_name: timer.posix_timer.trigger
    direct_mode: true
  power_up: init
  depends: timer

buffer_size : Specifies the size of the buffer. After this amount the jitter is calculated and printed.

Process data {#process_data}

The jitter measurement module provides a cyclic process data with the actual measurement.

- double: max_ever
- double: last_max
- double: last_cycle
- uint64_t: last_ts
- double: max_ever_time

The process data device is named <name>.inputs.pd.

Triggers

This modules provides two trigger devices

<name>.inputs.trigger : This is triggered every jitter calculation step

<name>.new_maxever.trigger : This is triggered if a new maximum jitter value is calculated over the whole runtime.