Process for automatically detecting the throughput of a network, particularly of the can bus type and for configuring with the detected throughput by transition analysis, and corresponding device

摘要

A process for automatically detecting throughput of a network by a device. The network transmits a signal on which messages are carried that include bits of length L_BIT and of a dominant or recessive type. The process includes the following successive steps: (a) the device goes into a listen mode; (b) the device obtains a triplet of successive transitions in the signal transmitted on the network, the triplet delimiting a first and second signal level, one dominant and the other recessive; (c) the device measures the duration, expressed as a period T_H number of a clock of the device, of each of the first and second levels; (d) as a function of the measured durations of the signal levels, the device obtains a new throughput configuration by determining values for parameters that define the bit length L_BIT; (e) the device validates the new throughput configuration; (g) if the device detects that at least one throughput adaptation condition is verified, it goes into a normal mode, otherwise it obtains a next transition of the signal, which delimits with the last previous transition a new level of the signal, it measures the duration of the new level and it reiterates steps (d) to (g) taking account of the new signal level.