Method for automatic detection of the data rate in a network, particularly a can bus type network, and for configuration to the detected data rate, corresponding device

Abstract

A method for automatic detection of the network data rate and for configuration at the detected data rate by a device connected to the network. This method includes an initialisation phase and an interative processing phase. The initialisation phase includes the following steps: the device is put into listening mode, in which it can receive messages from the network but it cannot send messages on the network; the device is initialised with an initial data rate configuration; a first timeout is started. The iterative processing phase comprises the following steps for each iteration: if at least one data rate adaptation condition is satisfied, the iterative processing phase is interrupted, the current data rate configuration is validated and the device is put into normal mode; if at least one data rate non-adaptation condition is satisfied or if the first timeout elapses without a data rate adaptation condition or a data rate non-adaptation condition being satisfied, the first timeout is reinitialised and the current data rate configuration is replaced by a new data rate configuration obtained by using a mechanism for obtaining several possible data rate configurations without knowledge of a clock frequency fof the device and without any assumption about the network data rate.