Labview gets samples to slow from a pic

[NunoSantos]

Hello! I hope you can help.

Im making a project in labview that gets data from a pic (pic18f4550) using usb. in the pic i have software that emulates a serial port (the pic is tested and sends the data) . In labview i send a char everytime i want to receive more data from the pic  (the pic is in a loop waiting for that char just to send the data (5 bytes example: 4B,56 in hexadecimal). The problem is that the sample rate is too low. I can use a wave generator and see in labview graph plot a sen with frequencies until 6Hz. more than that i dont have samples enough. The blocks in labview are very simple a visa write a visa read a convertion from hexadecimal to number and a graph plot. if necessary ill post the block diagram

anyone??

thanks

[ChristopheS.]

Hi,

Have you try to use the same program beetwen 2 PC with serial comunication ?

The second PC can simulate you PIC, and then you can check that you VI, and serial port configuration.

Let me know the result of this test.

Regards,