Transmission parameter acquisition method and terminal

Abstract

The invention discloses a transmission parameter obtaining method and a terminal. The transmission parameter obtaining method comprises the following steps: obtaining a waveform sequence feature of N waveform sequences composed of the hopping of preset X levels, wherein the waveform sequences have the following waveform sequence features: the transmission durations of the waveform sequences are the same, the first waveform sequence hops to a low level after lasting a first preset time starting from a high level, a second waveform sequence lasts the high level, a third waveform sequence hops to a low level after lasting a second preset time starting from the high level, and the preset X levels hop from the high level to the low level; continuously detecting the X level hops on a receiving port; and calculating a transmission duration of the waveform sequences according to the N waveform sequences composed of the hopping of preset X levels and the time interval between any two level hops in the detected X level hops.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a transmission parameter acquisition method and a terminal. Background technique [0002] The serial communication method between electronic devices is usually transmitted character by character, each character is transmitted one by one, and when transmitting a character, it always starts with a "start bit" and ends with a "stop bit" , there is no fixed time interval requirement between characters. When two electronic devices communicate, the sending clock of the sending end and the receiving clock of the receiving end may be different. When the frequency difference between the sending clock and the receiving clock is too large, it will cause sampling misalignment at the receiving end, resulting in receiving errors and lower communication efficiency. [0003] In addition, when only two wires are used for communication between electronic devices, power supply / charging...

AI Technical Summary

Problems solved by technology

When two electronic devices communicate, the sending clock at the sending end and the receiving clock at the receiving end may be different. When the frequency difference between the sending clock and the receiving clock is too large, it will cause sampling misalignment at the receiving end, resulting in receiving errors and lower communication efficiency.

[0003] In addition, when only two wires are used for communication between electronic devices, power supply / charging is usually not possible during the communication process, and other external power sources are required, which brings great inconvenience to the use of electronic devices. Therefore, There is an urgent need in the art for a method of power supply / charging when only two wires are used for communication

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