Z-World XP8600, User Manual

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XP8600 Software Reference s 37
• void write_DAC2( int val )
Writes data serially to DAC2 (U4) on the presently addressed XP8600.
The board address must have been set previously with a call to
PBus12_Addr
. A call to one of these functions must be followed by a
call to
latch_DAC2
—or its equivalent in user-supplied code—
otherwise no digital-to-analog conversion occurs.
• void latch_DAC1()
Transfers the data in Register A of DAC1 (U3) to Register B of DAC1,
whereupon it is converted and the analog signal is output. The board
address must have been set previously with a call to
PBus12_Addr
. A
call to this function must be preceded by a call to
write_DAC1
or its
equivalent in user-supplied code.
• void latch_DAC2()
Transfers the data in Register A of DAC2 (U4) to Register B of DAC2,
whereupon it is converted and the analog signal is output. The board
address must have been set previously with a call to
PBus12_Addr
. A
call to this function must be preceded by a call to
write_DAC2
or its
equivalent in user-supplied code.
• void Init_DAC()
Initializes the presently addressed XP8600, setting both outputs to
zero. The board address must have been set previously with a call to
PBus12_Addr
.
• void Set_DAC1( int val )
void Set_DAC2( int val )
Combines the functions of
write_DAC x
and
latch_DAC x
into a single
function for convenience. The board address must have been set
previously with a call to
PBus12_Addr
.
Functions in Other Libraries
Functions in the other libraries listed in Table 4-1 are equivalent to those
listed above except for minor internal details.