SPI interface Internet of things wireless transceiver based on SX127X chip

Abstract

The invention provides an SPI interface Internet of things wireless transceiver based on an SX127X chip. The technical problems of short communication distance, poor anti-interference ability and the like in the prior art are solved. The transceiver comprises an SX127X chip capable of carrying out lora demodulation on a received signal and / or carrying out lora modulation on a transmission signal. The SX127X chip is provided with an SPI interface. The SX127X chip is connected with the output end of a received signal processing circuit and the input end of the transmission signal processing circuit. The input end of a received signal processing circuit and the output end of the transmission signal processing circuit are connected with a receiving and transmission switching switch. The receiving and transmission switching switch is connected with a wireless signal transmission / receiving device. The SPI interface Internet of things wireless transceiver provided by the invention has the advantages of long communication distance, simple circuit, strong anti-interference ability, low power consumption, high reliability and the like, and can adapt to complicated environments. A lot of nodes can be connected with the SPI interface Internet of things wireless transceiver. Communication interference among different nodes can be reduced.

Description

technical field [0001] The invention belongs to the technical field of transceivers, and in particular relates to a SPI interface Internet of Things wireless transceiver based on an SX127X chip. Background technique [0002] At present, most wireless transceiver hardware platforms use FSK and GFSK communication methods and anti-jamming technology based on frequency hopping. Interference, the success rate of sending and receiving, and the distance of sending and receiving will be greatly reduced; and there are still problems such as many modules used, complex circuits, high error rate, few nodes that can be connected to it, and high power consumption. [0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and proposed various solutions. For example, the Chinese patent literature discloses an ultra-low power transceiver [Application No.: 201210517565.8] for short-distance wireless interconnected wireless nodes of the I...

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Problems solved by technology

[0004] Although the above solution solves the problem of high power consumption in the prior art to a certain extent, the solution still has the following problems: short communication distance, many modules used, complex circuits, high error rate, and a small number of nodes that can be connected to it. Unable to adapt to complex environments, poor anti-interference ability and other issues

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