Simma Software, Inc.
The J1939 experts
Specializes in real-time communication protocols and flash bootloaders for the embedded systems industry.
Featured Products
Commercial and Heavy-Duty Vehicles
Automation and Industrial Control
UDS Software and Source Code
J1939, OBD2, UDS Adapter / Converter
J1939 and UDS Flash Bootloader
Software Products
Hardware Products
About
Who we are
Simma Software, Inc., the J1939 experts, specializes in real-time communication protocols and flash bootloaders for the embedded systems industry. Our product line includes solutions for J1939, CANopen, CAN, J1587, J1708, J2497, J1922, ISO 15765, OBD-II, UDS, XCP, and KWP2000.
Our software is used in millions of electronic control units, 700 plus designs, and by more than 1000 global customers. Our products are used by Ford, Boeing, the US Military, several tier one suppliers to all major OEMs (e.g. Freightliner, International), several cellular equipment providers, and diagnostic equipment manufacturers.
The J1939 Experts
Achievements
Testimonials
What customers say
“JR Simma is one of the best software engineers I have ever worked with. He is a member of the rare breed of software engineers who can not only write good, efficient, bugless code, but also understands the hardware enough that he can debug both HW and SW problems.”
Ray Suda – Hegemon Electronics
“JR Simma is one of the finest software engineers I’ve worked with. He quickly comprehends new technologies and is likely to improve upon them in the process.” *
“I have worked directly with JR for more than 2 years designing and developing embedded software and systems. I have found him to be hard working, honest, and thorough. He communicates well, works in both a team environment and as an individual, and pays attention to detail. JR is also a top notch programmer, who maintains an excellent system perspective throughout code development. In addition, his extensive experience in data link communications has been valuable many times, quickly identifying issues that would take others much longer to find. I highly recommend him for any embedded systems project.” *
“Every time I see a semi trailer stop safely, I thank Simma Software.” *
“JR Simma is by far the best programmer I’ve ever met. I work in a large scale company providing software support. I’ve supported software on numerous enterprise applications and have examined software written by hundreds of designers. I’ve debugged problems down to the bit level many times. On a few occasions I’ve been completely stumped. I’ve called JR Simma on the phone and described the problem symptoms and what I know about the problem. Literally over the phone without seeing any code, he has pin pointed the problem. That is amazing. No other software programmer I know comes close to him in depth of knowledge.” *
* Due to corporate policy, these submissions wished to remain anonymous
News
Recent updates
Comparing Automotive Protocols
LIN vs CAN vs Ethernet J1939 vs UDS
Understanding LIN Bootloaders
Disclaimer: If you are looking for more in-depth information on this product, please visit ...
The Basics of Microcontroller-based Embedded Systems
What is an embedded system? An embedded system is a specialized system designed to perform a spec...
Talk to us
Please contact us if you are interested in our products.
Experience Summary
1000
Global
Customers
500
Protocol
Stacks
300
CAN
Device Drivers
75
Flash
Bootloaders
60
Microcontrollers
& DSPs
10
Real Time Operating Systems
Our Customers
Our Partners
