About communication between C program and VI with CIN

[James2001]

I programmed a VI includes an UART communication CIN to communicate with a C program end. Now this two ends cannot communicate in same speed (bit/sec). If the VI is given a higher speed than the C end it can receive a correct data from the C end but has a Framing error. The C code in CIN can communicate with C program end normally. Does VI affect the UART communication setting? Analyzing the hpenomenon, the VI will slow down the CIN communication.

I will be very glad that you can give me any advice.
Thanks in advance,

James2001

[Lab Viewer]

Probably it's true that the VI slow down the CIN (the time required for exchanging data). In order to avoid different processing speed, try to implement handshaking.