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Bus address allocation method and bus system

An allocation method and bus address technology, applied in the transmission system, electrical components, etc., can solve the problems of reducing the repetition rate and affecting the address allocation speed, etc., and achieve the goal of reducing the probability of address conflicts, improving the efficiency of detecting conflicts, and multi-dimensional and efficient address competition Effect

Inactive Publication Date: 2021-06-08
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the Chinese patent application CN105546730A, indoor units need to be polled and called in order, and all addresses must be checked, and it is necessary to judge whether there is an indoor unit with the same address, or whether the address has already been used, and if so, generate a new address. And set the priority, and then allocate according to the priority, and because the priority judgment method is fixed for subsequent additions, the effect of avoiding the repetition rate will be reduced, and the address allocation speed will be affected

Method used

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  • Bus address allocation method and bus system
  • Bus address allocation method and bus system
  • Bus address allocation method and bus system

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Embodiment Construction

[0026] The invention provides a bus address allocation method, which is suitable for a bus system in which a master controls multiple slaves.

[0027] Such as figure 1 As shown, in Embodiment 1 of the present invention, a bus address allocation method is provided, which includes:

[0028] The host broadcasts the allocated address data frame to the bus, and the allocated address data frame includes an address to be allocated;

[0029] The slaves with unallocated addresses compete for the address to be allocated, and the slaves that grab the address to be allocated reply to the master;

[0030] After the master receives the reply from the slave, it uses the roll call data frame to roll the slave to determine whether the address to be allocated is successfully allocated;

[0031] The master rolls the name of the slave, and after the slave replies normally, the master judges that the address assignment is successful, and sends the assigned address data frame again to assign the ...

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Abstract

The invention discloses a bus address allocation method and a bus system. The method comprises the steps that a host broadcasts an allocation address data frame to a bus, and the allocation address data frame comprises an address to be allocated; slaves which are not allocated with the addresses compete for the address to be allocated, and the slaves which grab the address to be allocated reply to the host; and after the host receives the reply of the slaves, the slaves are subjected to roll call by adopting a roll call data frame to judge whether the address to be allocated is successfully allocated or not. By adopting the technical scheme of the invention, addresses of the slaves can be quickly allocated.

Description

technical field [0001] The invention relates to the field of bus control, in particular to a bus address allocation method and a bus system adopting the bus address allocation method. Background technique [0002] In the prior art, when solving the problem of bus-type control, one-control-many is a relatively popular control method at present, and has a good performance. However, with the increase of networking, the corresponding slave node address setting, the complexity of the problem of matching the master and slave addresses has gradually become prominent. In the prior art, it is often necessary to manually set the slave address, or use the serial communication of the slave to communicate. Allocating addresses one by one takes up unnecessary resources. [0003] In the Chinese patent application CN105737329A, it is necessary to assign a physical address to the slave unit, that is, the indoor unit, and then carry out the preset bit address in the physical address of the o...

Claims

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Application Information

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IPC IPC(8): H04L29/12
CPCH04L61/5038
Inventor 王胜利吴学伟邹宏亮温东彪李志逢
Owner GREE ELECTRIC APPLIANCES INC
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