Study On the One－wire bus under the environment of MCS51
Abstract
This thesis mainly studies single and total line( namely total line of One- wire) technical principle and signals that the American company of DALLAS release to deliver the way, explaining the single and total line correspondence agreement, and to the total line of One- wire under the environment of MCS51 of carry out the mechanism to make the further research.
The total line of single line is a kind that has the competition ability very much in numerous lines with total the spot. It has and can carry on numerical communication, the total line load's have great capacity with calculator, cloth line JIAN3 LIAN4, accuracy is high, function stability, price cheapness etc. various advantage. It is deluxe state of the industry the spot system design. The real advantage of a glimmer of control lie in: Be the signal source, did not need to be consider how resolve the communication agreement problem; At the great majority situation, need not consideration spread of total and on-line conjunction feeling machine quantity; Even don't need to provide another power supply in most situations. Its biggest advantage is to make the customer more convenient.
Aim at the One- wire total line technique characteristics, apply the One- wire machine number of items word temperature to spread the feeling machine DS18B20, constitute a temperature to measure the system under a machine of MCS51 environment.
