Reasons for the communication failure of the wireless module

The wireless module communication failure is very harmful in the wireless application solution, which directly leads to the interruption or even paralysis of the wireless application system. It is very important to quickly find the cause of communication failure and solve it. Next, let the editor take you to see what are the general reasons for the communication failure of the wireless module.

1. Whether the switch is powered on

As the operation of the wireless module begins, sometimes the most basic operations are often easier to overlook. Does the wireless module have power, and is the power switch turned on? Is the power cord faulty?

2. Whether the parameter settings of the sending and receiving modules are consistent

Whether to set the frequency band, coding rate, expansion factor, and bandwidth to be the same.

Take our LoRa1276F30 function demo board as an example. The editor sets the frequency band of the sending module on the left to 868.5MHz, the code rate to 4/5, the spreading factor to 12, and the bandwidth to 125KHz, on the right Set the receiving module to the same value on the left, the difference is that the frequency is changed to 878MHz.

The result is as follows: the red indicator on the left transmitter module flashes in the main interface, the TX value is accumulating, and the RX value is 0.

The TX and RX of the receiving module on the right are both 0, and the indicator light does not flash.

Set the frequency band of the receiving module on the right to 868.5, which is the same as the frequency band of the transmitting module on the left.

Therefore, whether the parameter settings of the transceiver module are consistent is also one of the common problems of communication failure.

3. Whether the antenna is consistent with the module frequency band

In the actual application of the transceiver module, the signal communication will be poor due to geographical environment, distance and other reasons. The antenna must be configured to enhance the signal. If the antenna frequency band is inconsistent with the wireless module frequency band, communication failures are also prone to occur.

4. The indicator status changes

 Normally, send module (TX indicator is on, TX value is superimposed once -> receiving module (RX indicator is on, RX value is superimposed once) -> Receiving module (TX indicator is on, TX value is superimposed once) -> Sending module (RX index The light is on, and the RX value is superimposed once) The communication process is completed. When a fault occurs, you can check whether the status change of the indicator is faulty, and use the following methods to find the status change of the problem indicator.

The above are the common reasons for the communication failure of the wireless module. NiceRF is committed to providing customers with high-quality wireless modules. It has a professional R&D team, complete quality production system and quality system. Welcome customers to come to consult.