JSN-SR04T Sensor Model

The JSN-SR04T ultrasonic sensor behavior is implemented in Python and optionally mirrored by a C# Renode plugin.

C# Plugin

Path: Test_Board_Sensore/simulation/src/JSN_SR04T_Plugin/JSN_SR04T.cs

Key behavior:

• Validates trigger pulse width (~10 us)
• Computes echo pulse width as distance_cm * 58
• Enforces timeout handling

Python Helper

Path: Test_Board_Sensore/simulation/python/sensor_helper.py

State machine (from the helper):

idle -> triggered -> measuring -> ready
  ^        |             |         |
  |        v             v         v
  +----- timeout <---- echo end ----+

GPIO bindings (Renode helper):

• ECHO: PD0
• TRIG: PD1

TODO: Confirm any alternative pin maps for hardware builds.