User`s guide

Driver Formats & Routines

4.2.7

adc10_set_trigger

void adc10_set_trigger

(

unsigned short enabled,

unsigned short auto_trigger,

unsigned short auto_ms,

unsigned short dir,

unsigned short threshold,

short delay

)

This routine defines a trigger event for the next block operation, and specifies the

delay between the trigger event and the start of collecting the data block. Note that

the delay can be negative for pre-trigger.

Arguments

enabled immediately this is TRUE if the ADC-10 is to wait for a trigger event,

and FALSE if the ADC-10 is to start collecting data

auto_trigger this is TRUE if the ADC-10 is to trigger after a specified

time (even if no trigger event occurs). This prevents the

computer from locking up, if no trigger event occurs.

auto_ms specifies the time in ms after which auto_trigger will

occur.

dir the direction can be rising or falling: rising = 0, falling =

threshold this is the threshold at which a trigger event on channel A

or B takes place. It is scaled in ADC counts.

delay This specifies the delay, as a percentage of the block size,

between the trigger event and the start of the block.

Thus, 0% means the first data value in the block, and

-50% means that the trigger event is in the middle of the

block.