On Tue, 16 Aug 2011, Derrick Washington wrote:
> Anders
>
> I have included the following line in my generic xml file
>
> <output>
> <binary_mode>true</binary_mode>
> <byte_order>network</byte_order>
>
> My C++ code looks like this now.
>
> float gps_vdummy, gps_xdummy, gps_ydummy, gps_zdummy;
>
> if ( (quik_silva_status_reg & 0x00001000) != 0 ) { //CHECK TO SEE IF
> SIMULATOR DATA IS AVAIABLE
>
> gps_vdummy = rs232_uart1_fp;
> gps_zdummy = rs232_uart1_fp;
> gps_xdummy = rs232_uart1_fp;
> gps_ydummy = rs232_uart1_fp;
> etc ...
>
> My hardware is returning a 32bit floating point word, in hardware what is
> happening is my UART is taking in the bytes one at a time of course and
> shifting the into a 32bit register a byte at a time, and returning that
> 32bit value. Soooo if FG is sending the data MSB(most significant byte
> first), then I should be getting the correct value, right?
So rs232_uart1_fp is a floating point variable located at the
address of the UART output register/port or something similar?
Are you sure it supports that (i.e. reading it as a float)? If not could
you try reading the 32bit value into an int variable and reinterpret it
as a float with something like
unsigned int foo = rs232_uart1_u32;
float bar = *(float *)&foo;
Also, there is no need to wait before reading the next word from the UART?
Cheers,
Anders - who hasn't programmed an UART since the 68hc11 and late Amiga
days.
--
---------------------------------------------------------------------------
Anders Gidenstam
WWW: http://www.gidenstam.org/FlightGear/
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