The wireless module communication failure is very harmful in the wireless application solution, which directly causes the wireless application system to be interrupted or even paralyzed. It is very important to quickly find the cause of the communication failure and solve it. Below, let's take a look with the editor, what are the general causes of wireless module communication failures.
1 Whether the switch is powered on
As the start of the wireless module operation, sometimes the most basic operations are often more easily overlooked. Does the wireless module have a power supply and is the power switch turned on? Is the power line faulty?
2 Whether the parameter settings of the sending and receiving modules are consistent
Whether the parameters such as frequency band, coding rate, Spreading Factor, and bandwidth are set the same.
Taking our LoRa30 function demo board as an example, the editor sets the frequency band of the left transmitting module to 868.5MHz, Code Rate to 4/5, spreading factor to 12, bandwidth to 125KHz, the setting of the receiving module on the right and the left Same, except that the frequency is changed to 878Mhz.
The results are 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 right receiving module TX and RX are both 0, the indicator light is not flickering
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 receiving and transmitting modules are consistent is also one of the common problems of communication failures
3 Whether the antenna is consistent with the frequency band of the module
In actual application of the receiving and transmitting modules, due to geographical environment, distance, etc., the signal communication will be poor. It is necessary to configure the antenna to enhance the signal. If the antenna frequency band is inconsistent with the wireless module frequency band, communication failure is also prone to occur.
4 Indicator status change
Under normal circumstances, the transmitting 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 superimposing once) -> transmitting 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 find the problem through the status change of the indicator.
The above are the common reasons for the wireless module communication failures. NiceRF is committed to providing customers with cost-effective wireless modules. It has a professional R&D team, a complete quality production system and a quality system. Customers are welcome to come to consult.