A serial interface conversion device and conversion method for saving bus resources

Abstract

The invention discloses a serial interface conversion device capable of saving bus resources and a serial interface conversion method. The serial interface conversion method comprises the following steps: S1, judging whether a UART (Universal Asynchronous Receiver Transmitter) has start bit change or not; when a transmitting circuit end UART of a main control board has the start bit change, turning into S2, or otherwise, turning into S5; S2, converting a serial interface of which the UART has the start bit change, and determining an output channel number of serial data; S3, finding a service board receiving circuit of a corresponding time slot according to the output channel number; S4, receiving the serial data transmitted by a transmitting circuit of the main control board by the service board receiving circuit of the corresponding time slot, and converting and outputting the serial data; S5, converting the serial interface of which the UART has the start bit change, and determining an output time slot of the serial data; S6, finding a corresponding channel number according to the output time slot, transmitting the serial data to a receiving circuit of the main control board by the channel number, and converting and outputting the serial data. According to the method, data on a bus are subjected to time sharing multiplex, so that bus resources are saved.

Description

technical field [0001] The invention relates to a serial interface converting device, in particular to a serial interface converting device which saves bus resources, and at the same time relates to a conversion method for realizing serial interface conversion based on the serial interface converting device, which belongs to the technical field of data communication. Background technique [0002] The operation process of the bus is to complete the transmission of information between two modules, the one that starts the operation process is the master module, and the other one is the slave module. The main module applies for bus control right, and the bus controller makes the decision. The master module addresses the slave module after obtaining the bus control right, and the slave module transmits data after confirmation. Only one master module on the bus can occupy the bus at a time. [0003] However, in the system equipment of the data communication system, it often invo...

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Problems solved by technology

[0004] However, at present, when one board communicates with multiple boards, there is no way to solve the above problems well to meet the communication requirements of the system

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