The infotainment system is loaded with information and entertainment related multimedia features. Hence this IVI system needs to communicate with several ECUs to fetch various vehicle parameters. Find out why re-usable SAE J1939 stack was integrated and how it helped to save time and cost

1. Integration of J1939 stack with Android Infotainment for ECU communication and collection of vehicle
parameters | US based Tier-I Supplier
As a trusted embedded technology partner, we at Embitel Technologies have delivered an end-to-end
automotive infotainment solution for a US based Tier-I Supplier.
Now under production, this system will be deployed for commercial vehicles across Mexico.
Business Challenge:
The infotainment system is loaded with information- and entertainment-related multimedia features
like virtual gauges, navigation maps, voice recognition, access to media files, app-store, phone
call/message syncing using BT and more.
Hence this system needs to communicate with several ECUs to fetch various vehicle parameters.
Embitel’s infotainment software development team needed an off-the-shelf communication layer that
can be configured easily. This would ensure reduced development time and add value to the bottomline
of the project costs.
Embitel Solution: in-house designed reusable J1939 stack with provisions for faster configuration
The team decided to integrate the J1939 stack designed in-house to save time and costs. So our cross-
functional expertise in Embedded and Automotive technology added value to our client’s product
roadmap.
Following are the details of the solution:
∑ Re-usable SAE J1939-complaint stack best suited for
commercial vehicles was integrated with the Android OS
∑ The ported J1939 stack consisted of J1939 Data Link and
Transport Layer (J193921), Network Management layer
(J1939/81) and Vehicle Application Layer(J1939/71)
∑ 50 PGNs were easily configured only in the Application layer,
rest of the stack was integrated as it is

2. Integration of J1939 stack with Android Infotainment for ECU communication and collection of vehicle
parameters | US based Tier-I Supplier
∑ SAE J1939 complaint Boot Loader was also ported to facilitate eprogramming of ECUs efficiently
and securely via CAN network
∑ All this ensured support for vehicle communication and reprogramming of ECUs
∑ All the necessary device drivers were designed, developed and ported by Embitel
∑ J1939 stack has been coded as per the MISRA (Motor Industry Software Reliability Association)
-C guidelines to ensure code safety, security, portability and reliability for embedded
Infotainment system and applications
∑ J1939 stack also ensured Enhanced Portability for the entire system (Support for 8, 16 and 32 bit
Embedded Controllers)
Embitel Impact:
∑ Reduced development time and costs as the readily available and re-usable J1939 stack was
integrated
∑ Since PGN configuration was required to be done only at the Application Layer, it ensured added
time advantage
∑ Cross-functional teams with complementary skill-sets delivered a timely value-add to the overall
cost and quality to the infotainment project
What is an Infotainment System?
Infotainment in automobiles is the integrated system that delivers entertainment and information
content.
Typical tasks that can be performed with an in-vehicle infotainment system include managing and
playing audio content, utilizing navigation for driving, delivering rear-seat entertainment such as movies,
games, social networking, etc., listening to incoming and sending outgoing SMS text messages, making
phone calls, and accessing Internet-enabled or smartphone-enabled content such as traffic conditions,
sports scores and weather forecasts.
Source - Webopedia