A single-wire two-way communication system and communication method
A technology of two-way communication and communication method, applied in single-line two-way communication system and communication field, can solve the problems of large size of components, low reliability of integrated data transmission, and many communication ports, etc.
Active Publication Date: 2022-03-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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Problems solved by technology
[0004] In order to overcome the above deficiencies, the object of the present invention is to provide a single-wire two-way communication system and a communication method based on the communication system, so as to solve the problem that the existing two-way transmission of components occupies many communication ports, and the large size of components is not conducive to integration. And the technical problem of low reliability of data transmission
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.
[0027] see figure 1 , a communication method provided by the present invention, which includes:
[0028] A communication method based on a single-wire bidirectional communication system, characterized in that the single-wire bidirectional communication system includes: a master controller with a transistor, a slave controller with a transistor, and a pull-up resistor, and the transistor is connected to the master control...
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The application discloses a single-wire two-way communication system and a communication method. The communication method includes: in the monitoring mode, when either the master controller or the slave controller does not hear the announcement signal sent by the other party, sending data, wherein the master controller The priority of the slave controller is higher than that of the slave controller; when the master controller detects the announcement signal sent by the slave controller, the master controller sends the announcement signal again and sends data to the slave controller; when the slave controller detects the master controller When the announcement signal is sent, the slave controller switches to receive mode to receive the data sent by the master controller. The communication method of the present application can realize two-way communication with a single data line, reducing the occupation of transmission port resources, and the communication method of the present application sets the master-slave priority, which ensures the directionality of data transmission and avoids both master-slave Sending data at the same time causes data conflict, which improves the reliability of data transmission.
Description
technical field [0001] The invention belongs to the technical field of data communication, and in particular relates to a single-line two-way communication system and a communication method. Background technique [0002] In the two-way data transmission between two devices on the circuit board, such as between an MCU and a functional module or between two MCUs, it is often limited by the constraints of the communication port of the chip and the shortage of IO port resources, which makes the design become difficult. Difficulty, and the selection of components with ample number of pins will increase the area of the circuit board, increase the overall cost, and affect the integration of the equipment. At least two wires are required to achieve two-way communication between commonly used components nowadays, such as UART or SPI communication interfaces, which occupy more interface resources of the device. Contents of the invention [0003] (1) Purpose of the invention [0...
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IPC IPC(8): G06F13/20
CPCG06F13/20
Inventor 师向群鲁宝儒陈镇茂
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST