comedi_arm — arm a subdevice
#include <comedilib.h>
int comedi_arm( | comedi_t * device, |
| unsigned int subdevice, | |
unsigned int source); |
This function arms a subdevice. It may, for example, arm a counter to
begin counting. The source
parameter specifies what source should trigger the subdevice to begin.
The possible sources are driver-dependant. This function is only
useable on subdevices that provide support for the
INSN_CONFIG_ARM configuration instruction.
Some subdevices treat this as an instruction to arm a specific channel.
For those subdevices, this function will arm channel
0 and comedi_arm_channel
should be called instead of this one to specify the channel.