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USBSerial how to set speed

Topic last updated 29 Feb 2012, by Frederic Monnier. 2 replies
Frederic Monnier
28 Feb 2012

Hi,

I'm new here, but already test several basic stuff on the mbed NXP LPC1768.

I'm gone use it to read sensor and I need maximum speed on USB. Before I worked with FTDI at 3Mbs.

I didn't manage to find what is the max speed possible with the USBSerial (using direct D+ D- from the NXP) and how to set the speed! (only on PC side??).

And if I go for the PCSerial, what is the maximum baud rate I can use?

Thanks in advance!

Fred

Samuel Mokrani
28 Feb 2012

Hi Frederic,

In fact, a USBSerial object sends data at the USB speed (I remember some tests I did where I reached 4.0 Mbit/s when 64bytes packets was sent) so no need to setup your speed on the mbed side.

Sam

Frederic Monnier
29 Feb 2012

Thanks! I'll test it! 4.0Mbit/s sound good!

Fred