Learn & Emulate
Certo Knowledgebase
Welcome to Certo!
Build Faster Without Waiting on Hardware
Modern product teams are moving faster than ever -until hardware slows everything down.
If you’ve ever had a project stall because a device wasn’t ready, delayed, or still being debugged, you know the frustration. What starts as an agile process quickly turns into bottlenecks, handoffs, and waiting.
That’s where Certo changes everything.
Certo introduces a new approach to development with User-Space Hardware Virtualization, allowing teams to simulate and interact with hardware interfaces without needing the physical device in hand.
Instead of waiting, your teams can:
- Start building immediately
- Work in parallel across hardware, software, and QA
- Collaborate around a shared, defined system from day one
By creating a unified development environment, Certo removes the traditional barriers between teams, turning fragmented workflows into a seamless, coordinated process.
The result?
Faster development cycles, fewer delays, and the ability to bring complex systems to life without being blocked by hardware constraints.
How to Register Certo Desktop
Getting started with Certo is fast, simple, and built to remove friction from day one.
Immediately after purchase, you’ll be taken to a confirmation screen with everything you need to get started, including direct download links for your system.
Installation takes just a single command, and within seconds, the application is ready to launch.
On first open, you’ll enter your license key, provided via email or by your team, to unlock your workspace. From there, Certo handles the rest automatically, securely registering your environment with no additional setup required.
In under a minute, you’re fully installed, activated, and ready to begin building.
Static Analysis & Schema Generation
Instantly Import Schemas by Scanning Binaries
Before you run a single line of code, Certo helps you map out exactly how your application interacts with hardware.
This step is all about creating a clear, reliable hardware interface so your team can build with confidence from the very beginning.
Certo gives you multiple ways to generate this foundation:
- Direct from Source (Most Accurate): Import your original C header files to capture precise data structures, definitions, and configurations exactly as they were designed.
- From a Debug Build (Fully Automated): Upload a compiled application with debug symbols, and Certo will automatically extract key interfaces like memory structures and device interactions.
- From Pre-Built Libraries (Quick Start): If you don’t have full access to source or debug builds, you can leverage Certo’s built-in library of standard hardware schemas to get up and running quickly.
No matter your starting point, you’ll end up with a complete, structured view of your system’s hardware interface.
With this foundation in place, your team can move forward aligned – ready to simulate, test, and collaborate without uncertainty or rework.
As soon as you upload a compatible build, Certo automatically analyzes the file and maps out your hardware interface in seconds.
Key elements like device interactions, memory structures, and system-level definitions are instantly organized into a clear, usable format, giving your team immediate visibility into how everything connects.
If a build doesn’t include full debug information, Certo will still import what’s available and clearly indicate any gaps – so you always know exactly what’s defined and what may need to be supplemented.
This ensures you can move forward with confidence, no matter what inputs you’re working with.
C/C++
#ifndef RADAR_CONFIG_H
#define RADAR_CONFIG_H
#include <sys/ioctl.h>
// Define a cool-looking hardware struct for Certo to find
struct RadarConfig {
int frequency_hz;
int power_level;
char mode[16];
};
// Define some fake IOCTL codes
#define SET_RADAR_CONFIG _IOW('R', 1, struct RadarConfig)
#define GET_RADAR_STATUS _IOR('R', 2, int)
#endif // RADAR_CONFIG_H
C/C++
#include <stdio.h>
#include <fcntl.h>
#include "radar_config.h"
int main() {
// The application instantiates the struct
struct RadarConfig my_radar = { 10000, 5, "ACTIVE" };
printf("Radar initialized at %d Hz\n", my_radar.frequency_hz);
return 0;
}
Shell
gcc -g3 radar_config.c -o radar_config.o
Live Protocol Capture & Behavioral Mapping
Overview
In this walkthrough, we demonstrate one of Certo’s most powerful capabilities: live behavioral interception of a real hardware communication session.
Using SDR++ connected to a live rtl_tcp server, Certo Emu positions itself transparently between the client application and the physical device interface—acting as a real-time protocol wiretap without disrupting normal operation.
As the session unfolds, Certo captures every socket interaction in real time, including:
Connection handshakes
Socket reads and writes
Frequency tuning commands
Gain adjustments
Runtime device communication patterns
But the true value of the interception workflow is not just packet capture—it’s interpretation.
Instead of forcing engineers to analyze raw hex streams manually, Certo automatically parses the traffic using the schemas generated earlier in the workflow. Commands that would normally appear as unreadable binary data are transformed into fully structured, human-readable operations with labeled fields and decoded parameters.
This creates a complete behavioral footprint of the hardware/software interaction.
Finally, the captured session is saved as a reusable interaction blueprint, which can later be used to power:
Pure Virtual device emulation
Repeatable automated testing
CI/CD validation pipelines
Hardware-free software development
AI-assisted debugging and orchestration
This interception workflow is the bridge between observing a real system and reproducing it virtually with precision.
Pure Virtual Emulation
Spoofing rtl_tcp via TCL
This video demonstrates the final stage of the Certo workflow: replacing real hardware entirely with a fully virtualized behavioral emulation.
After previously capturing and analyzing the live rtl_tcp communication footprint, we now completely disconnect the physical hardware environment. The real rtl_tcp server is terminated, severing the application’s connection to the actual device.
At this point, Certo transitions into Pure Virtual Mode.
Instead of passively observing traffic, Certo now assumes full ownership of the socket interface—emulating the hardware endpoint directly and responding to SDR++ as though the real device still exists.
To prove the power of the system, we inject custom TCL logic that mathematically generates raw IQ data in real time. Rather than replaying a static recording, Certo synthesizes a continuous sinusoidal signal dynamically, entirely in software.
When SDR++ reconnects, the application remains completely unaware that the physical hardware has been removed.
The result is immediately visible:
A massive continuous energy spike appears on the live waterfall display
The generated waveform behaves exactly like live RF data
The SDR++ client continues operating normally against a fully virtual backend
This demonstrates a critical shift from hardware dependency to programmable infrastructure.
By virtualizing hardware behavior, Certo enables teams to:
Reproduce complex field conditions on demand
Build deterministic automated test environments
Run headless CI/CD validation pipelines
Simulate rare or expensive hardware scenarios
Allow QA and developers to work without physical devices attached
Pure Virtual Mode transforms hardware interaction from a physical constraint into a software-defined capability.
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