stv0g/comedilib
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

new scxi README from Caleb Tennis

Browse source
This commit is contained in:
Frank Mori Hess 2004-10-17 15:22:06 +00:00
parent f9e4eb07d7
commit 4e4c7e33f1
2 changed files with 39 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
scxi/Makefile.am
View file

@ -1,4 +1,6 @@
EXTRA_DIST = README
if BUILD_SCXI
lib_LTLIBRARIES = libscxi.la
else

37
scxi/README Normal file
View file

@ -0,0 +1,37 @@
Comedi SCXI Documentation - Caleb Tennis (caleb@aei-tech.com)
SCXI is a National Instruments standard for signal conditioning. It encompasses a set of
hardware that has the capability of reading and writing multiple types of channels via a
regular data acqusition card.
A SCXI system consists of a chassis with one or more SCXI modules located inside. The system
is connected via a cable to the data acquisition system, which communicates with the modules.
Comedi's SCXI support is available in a library, which will be built alongside the regular comedilib
if the --enable-scxi option is passed during ./configure time
The following functions are available:
scxi_mod_t *comedi_scxi_open(comedi_t *dev, unsigned short chassis_address, unsigned short mod_slot)
This function initializes the scxi module within a certain chassis and slot. Returns a pointer
to a scxi_module_struct which contains all of the pertinent information about the SCXI module. It
also attempts to figure out which module is located in the slot based on the information returned
from the module.
void comedi_scxi_close(scxi_mod_t *)
Closes the SCXI module
int comedi_scxi_register_readwrite(scxi_mod_t *mod, unsigned short reg_address,
unsigned int num_bytes, unsigned char *data_out, unsigned char *data_in)
This is the low level function for communicating with the SCXI module. It reads/writes the data
in/out of the register.