Communicating more slowly when Running TI LaunchPad F28379D in Simulink External Mode

Hello everyone,

Why does communication slow down between my particular device and the DSP board when the SCI_A baud rate is increased?

FYI, the increased baud rate is 921600 instead of 115200.

I will be thankful if anyone can assist with that issue so I can use the LaunchPad to scope signals in real time and tune parameters online.

Kindest regards

Mohamed

Answer 1

[Akshat]

Hi Mohamed,

The reasons for the slowing down might be:

1. The device you are communicating with may have limitations on its maximum supported baud rate.
2. The DSP board or the serial communication interface (SCI_A) may have limitations on its maximum supported baud rate.
3. The buffer size on the DSP board or the device may not be sufficient to handle the increased data flow at the higher baud rate.

You can check for the following things and try to confirm that the issue is one of the above given points:

1. Device specifications for baud rate; check whether 921600 is supported or not.
2. Hardware (DSP Board and SCI_A) for the maximum supported baud rate.
3. Buffer size to be increased on both DSP Board and SCI_A.

Hope this helps!