connecting the output microcontroler AT89S52 at matlab

2 views (last 30 days)
How to know the output of microcontroler program on matlab can be read real time
  2 Comments
Walter Roberson
Walter Roberson on 22 Jan 2013
Are you trying to read a particular pin from it, or are you trying to read the UART?
A microcontroller such as that one needs to be mounted in a board. Is that board then placed internally in your system such as a PCI board, or is it an external board with output connectors (e.g., a serial port)
Does the system you are running MATLAB on have a serial port, or does it only have a USB port?
Soni huu
Soni huu on 23 Jan 2013
Edited: Soni huu on 23 Jan 2013
yes,...i read the pin microcontroler via RS232 circuit with usb port
matlab read and run directly the system that comes the usb port through the RS232 series from pin microcontroler

Sign in to comment.

Answers (1)

Walter Roberson
Walter Roberson on 23 Jan 2013
What does "real time" mean in this situation? USB uses a polled shared-bus packet protocol that is not able to transfer data immediately after the data is generated. By default, USB serial ports collect characters until the packet is full or there have been no new characters for 20 ms. There is a way for controlling software on the transmitting end to request that all accumulated data be sent as soon as possible, but that has to be done on the transmitting end (e.g., at the microcontroller end if you are transmitting data from there); MATLAB does not have any interface to request immediate transfer when MATLAB is doing the transmitting.

Categories

Find more on Signal Generation and Preprocessing in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!