Sensors, actuators or other control devices are connected into the LIN network through the MCU. LIN nodes are usually comprised of a microcontroller and a LIN transceiver, but custom hardware or ASICs could also be used. The leader node can also act as a follower by replying to its own messages. Follower nodes contain a follower task only and cannot initiate communication at all they can only (1) ignore, (2) subscribe (receive) or (3) publish a response. A leader contains both a leader task and a follower task, and the leader task controls all communication over the LIN bus.
#ANALOG LEADERTASK SERIAL#
The LIN bus is a broadcast serial network with one leader node and up to fifteen follower nodes configured on a single, 12V wire up to 40 meters in length.
#ANALOG LEADERTASK ISO#
In 2013, the LIN specification was transcribed to the International Organization for Standardization (ISO) and was released as ISO standard ISO 17987 in 2016. The LIN Consortium developed and maintained the specification up to v2.2 in 2010. A consortium comprised of five European automakers (Audi, BMW, Mercedes-Benz, Volkswagen and Volvo), along with technology companies Volcano Automotive Group (now Mentor Graphics) and Motorola (now NXP) was founded in the late 1990s to develop the LIN specification, and the first version was published in 1999. Manufacturers began using a variety of serial communication technologies to address this, but this caused compatibility issues. However, for lower speed, less critical functions the CAN bus became too expensive to implement. NXP's Irina Costachescu provides an overview of CAN FD standard:Īfter the CAN specification was developed in the late 1980s, it was increasingly used by automotive manufacturers to network the various Electronic Control Units (ECUs) together within the car. Today’s vehicles use a combination of CAN for powertrain and body communications, LIN for low-cost applications such as body electronics, and FlexRay for high-speed synchronized data communication. While the CAN network was already in place within vehicles, its high bandwidth and advanced error detection capabilities were overkill (and thus, cost-prohibitive) for lower performance applications such as seat and window controllers. The Local Interconnect Network (LIN) was developed as a complementally bus standard to the Controller Area Network (CAN bus) to address the need for a cost-efficient network for lower performance devices within the vehicle.
![analog leadertask analog leadertask](https://ericherdmandotcom.files.wordpress.com/2021/06/img_2233.jpg)
If you are new to the Controller Area Network, check out our Introduction to the Controller Area Network (CAN) article first.Īdditionally, this article refers to Leader / Follower terminology in place of recognized industry terms that could be construed as expressions of bias.
![analog leadertask analog leadertask](https://venturebeat.com/wp-content/uploads/2020/05/a100.jpg)
Precursor: This article assumes the reader is familiar with the Controller Area Network (CAN).