Transmission of generic digital messages through a microprocessor montoring circuit

Abstract

The invention concerns a method for transmitting digital messages through a microprocessor monitoring circuit ( 18 ) of specific type and integrated to a microprocessor ( 12 ). Each message including an identifier and consisting of several groups of successive and juxtaposed bits divided into segments. The method consists in successively transmitting segments associated with a first group corresponding to the identifier and comprising a fixed number of bits; with second groups, at least one of the second group comprising a fixed number of bits depending on the type of monitoring circuit, the number of other second groups being independent of the type of monitoring circuit; with a third group comprising a number of bits greater than one: and with fourth groups comprising each a number of bits greater than one, the number of fourth groups depending on the identifier and on the type of monitoring circuit.

1 . A method for transmitting digital messages through output terminals of a microprocessor supervision circuit of a determined type from among several supervision circuit types integrated to with a microprocessor, each message comprising a message identifier and being formed of several groups of successive juxtaposed bits, the bit groups being divided in one or several segments each comprising a determined number of bits, the method comprising successively transmitting segments associated with the following successive juxtaposed bit groups: 
 a first bit group corresponding to the identifier and comprising a fixed number of bits whatever the supervision circuit type;    second bit groups, at least one of the second groups comprising a fixed number of bits depending on the identifier and on the type of supervision circuit, the number of the other second groups depending on the identifier and being independent from the supervision circuit type;    a third bit group comprising a number of bits greater than one and depending on the message to be transmitted; and    fourth bit groups each comprising a number of bits greater than one and depending on the message to be transmitted, the number of fourth groups depending on the identifier, on the supervision circuit type, and on the message to be transmitted.    
   
   
       2 . The method of  claim 1 , in which said at least one of the second groups is juxtaposed to the first group.  
   
   
       3 . The method of  claim 1 , in which each of said other second groups has a number of bits which depends on the identifier and which is independent from the type of supervision circuit.  
   
   
       4 . The method of  claim 1 , in which each of said other second groups has a number of bits greater than one which depends on the message to be transmitted.  
   
   
       5 . A device of digital message transmission through output terminals of a supervision circuit, of a determined type from among several supervision circuit types, integrated with a microprocessor, each message comprising a message identifier, said device comprising means for providing groups of successive juxtaposed bits forming the message, means for dividing the bit groups in one or several segments each comprising a determined number of bits and means for successively transmitting said segments, the bit group provision means being capable of successively providing a first bit group corresponding to the identifier and comprising a fixed number of bits identical whatever the supervision circuit type, second bit groups, at least one of said second groups comprising a fixed number of bits depending on the identifier and on the type of supervision circuit, the number of the other second groups depending on the identifier and being independent from the supervision circuit type, a third bit group comprising a number of bits greater than one and depending on the message to be transmitted, and fourth bit groups each comprising a number of bits greater than one and depending on the message to be transmitted, the number of fourth groups depending on the identifier and on the determined supervision circuit type.