Data delay using wireless modules in communication

dwzt

Data delay using wireless modules in communication [Copy link]

The wireless module will have delayed reception during the wireless communication process. The factors that cause this situation are not all external interference. Wireless communication technology itself also has data delay. The following will introduce how the data delay occurs during the transmission process of the wireless module. Since the wireless communication transmitter starts to transmit after receiving a certain amount of data from the terminal device, or after waiting for a certain period of time without new data, there is a delay of tens to hundreds of milliseconds from the wireless communication transmitter to the wireless communication receiver (the specific delay is determined by the serial port rate, air rate and data packet size). In addition, it takes a certain amount of time from the wireless communication receiver to the terminal device, but under the same conditions, the delay time is fixed. Data delay refers to the time to store or retrieve a data packet. Data delay refers to the time it takes for a business user to retrieve source data from a data warehouse or business intelligence control panel. Data delay refers to the time it takes to store or retrieve a data packet.

star_66666

Take a look first, I'm doing this recently

bqgup

This delay should not be visible to the naked eye. For example, when I use wireless to control LED, after sending the command to turn on the light wirelessly, the light will not light up after a period of time, but will light up immediately when the remote control is pressed. The naked eye cannot distinguish it. However, when I was doing a wireless remote control experiment of a small light, I found that the small light block had obvious delay. My wireless spi driver used simulated spi at that time, and I used to use single-chip hardware SPI. Until now, the problem has not been solved. Where does it happen? ? ? ? ? ? ?

dwzt

star_66666 posted on 2018-9-8 10:21 Take a look first, I'm working on this recently

Yes. I can learn about it. So you are working on data transmission.

dwzt

bqgup posted on 2018-9-9 08:32 This delay should not be visible to the naked eye. For example, when I use wireless to control LED, after the wireless command to turn on the light is sent, there will be no obvious interval between the small light...

That is calculated in ms. Maybe you can use mine and it won't cause any delay.

star_66666

Have time to study it

bqgup

dwzt posted on 2018-9-10 11:53 Those are all calculated by ms. Maybe you can use mine and it won’t delay things.

Mine is required by the hardware. The PCB is drawn like that. The hardware is basically fixed and cannot be changed. The intelligent program uses these pins. The delay may still be caused by the program problem.

shakencity

  Data latency is the time it takes to store or retrieve a data packet. Data latency is the time it takes a business user to retrieve source data from a data warehouse or business intelligence dashboard. Data latency is the time it takes to store or retrieve a data packet.