[Gumstix-users] Using UART 2 on an Overo

[Michael H. <Mic...@ha...>]

Hi there.  Has anyone had any luck using UART 2 on the Overo?  It's not listed on the board pin out, but according to the TI datasheet U2_TX should be available on P146/PWM11 and U2_RX on P147/PWM8.  The TX line seems to stay low instead of idling high as expected.

Linux lists three serial ports and I can quite happily write to UART 1 and UART 3.  I see on the gumstix site that they planned to use ttyS1 for on-board Bluetooth so I wonder if the line hasn't been brought out.

Thanks for any help,

Michael Hope
Controls Engineer

HAMILTONJET
CWF Hamilton & Co Ltd, Lunns Rd, PO Box 709, Christchurch, New Zealand
www.hamiltonjet.co.nz