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Re: Re: [Paparazzi-de =?ISO-8859-1?Q?vel] Connecting the x?= sens IMU to


From: martin
Subject: Re: Re: [Paparazzi-de =?ISO-8859-1?Q?vel] Connecting the x?= sens IMU to the Tiny
Date: Fri, 12 Dec 2008 18:29:33 +0100 (CET)

Hi,

> Is it possible to reprogram the USB or SPI handlers to act as RS-232,
thus
> emulating an external converter?

the USB on the LPC2148 processor that is used with the Tiny/TWOG is a
USB Function, meaning it can only talk to a USB Host as in a PC. USB
hardware like USB-to-serial is Function, too. Those Function devices can
not talk to each other as USB is not really a bus,

There are some SPI-to-serial converter chips available but the ones I
have seen only give you an serial hardware interface like a 16550 so
that you have to program all the registers by yourself. Have not seen a
direct SPI to serial chip or software yet.

Martin





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