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|
/***************************************************************************
lib/ibconfig.c
-------------------
copyright : (C) 2002 by Frank Mori Hess
email : fmhess@users.sourceforge.net
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "ib_internal.h"
static int set_spoll_timeout(ibConf_t *conf, int timeout)
{
if (timeout < TNONE || timeout > T1000s) {
setIberr(EARG);
return -1;
}
conf->settings.spoll_usec_timeout = timeout_to_usec(timeout);
return 0;
}
static int set_ppoll_timeout(ibConf_t *conf, int timeout)
{
if (timeout < TNONE || timeout > T1000s) {
setIberr(EARG);
return -1;
}
conf->settings.ppoll_usec_timeout = ppoll_timeout_to_usec(timeout);
return 0;
}
static int set_t1_delay(ibBoard_t *board, int delay)
{
unsigned int nano_sec;
int retval;
switch (delay) {
case T1_DELAY_2000ns:
nano_sec = 2000;
break;
case T1_DELAY_500ns:
nano_sec = 500;
break;
case T1_DELAY_350ns:
nano_sec = 350;
break;
default:
fprintf(stderr, "libgpib: invalid T1 delay selection\n");
setIberr(EARG);
return -1;
break;
}
retval = ioctl(board->fileno, IB_T1_DELAY, &nano_sec);
if (retval < 0) {
setIberr(EDVR);
setIbcnt(errno);
return -1;
}
return 0;
}
static int set_local_parallel_poll_mode(ibBoard_t *board, int local)
{
int retval;
short local_mode;
local_mode = local != 0;
retval = ioctl(board->fileno, IBPP2_SET, &local_mode);
if (retval < 0) {
setIberr(EDVR);
setIbcnt(errno);
return -1;
}
return 0;
}
/* Send CFE and CFGn to enable noninterlocked handshaking */
static int set_cable_length (ibConf_t *conf, int num_meters)
{
int retval;
uint8_t cmd[2];
size_t length=0;
if (num_meters < 0 || num_meters > 15) {
setIberr (EARG);
return -1;
}
cmd [length++] = CFE;
if (num_meters)
cmd [length++] = CFGn(num_meters);
retval = my_ibcmd (conf, conf->settings.usec_timeout, cmd, length);
if (retval != length)
return -1;
return 0;
}
int ibconfig(int ud, int option, int value)
{
ibConf_t *conf;
int retval;
conf = enter_library(ud);
if (!conf)
return exit_library(ud, 1);
switch (option) {
case IbcPAD:
retval = internal_ibpad(conf, value);
if (retval < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
break;
case IbcSAD:
retval = internal_ibsad(conf, value);
if (retval < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
break;
case IbcTMO:
retval = internal_ibtmo(conf, value);
if (retval < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
break;
case IbcEOT:
internal_ibeot(conf, value);
return exit_library(ud, 0);
break;
case IbcEOSrd:
if (value)
conf->settings.eos_flags |= REOS;
else
conf->settings.eos_flags &= ~REOS;
return exit_library(ud, 0);
break;
case IbcEOSwrt:
if (value)
conf->settings.eos_flags |= XEOS;
else
conf->settings.eos_flags &= ~XEOS;
return exit_library(ud, 0);
break;
case IbcEOScmp:
if (value)
conf->settings.eos_flags |= BIN;
else
conf->settings.eos_flags &= ~BIN;
return exit_library(ud, 0);
break;
case IbcEOSchar:
if ((value & 0xff) != value) {
setIberr(EARG);
return exit_library(ud, 1);
}
conf->settings.eos = value;
return exit_library(ud, 0);
break;
case IbcReadAdjust:
// XXX
if (value) {
fprintf(stderr, "libgpib: byte swapping on reads not implemented\n");
setIberr(ECAP);
return exit_library(ud, 1);
} else {
return exit_library(ud, 0);
}
break;
case IbcWriteAdjust:
// XXX
if (value) {
fprintf(stderr, "libgpib: byte swapping on writes not implemented\n");
setIberr(ECAP);
return exit_library(ud, 1);
} else {
return exit_library(ud, 0);
}
break;
case IbcEndBitIsNormal:
if (value) {
return exit_library(ud, 0);
} else {
fprintf(stderr, "libgpib: no support for END on EOI only yet \n");
setIberr(ECAP);
return exit_library(ud, 1);
}
break;
default:
break;
}
if (conf->is_interface) {
switch (option) {
case IbcPPC:
retval = internal_ibppc(conf, value);
if (retval < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
break;
case IbcAUTOPOLL:
retval = configure_autospoll(conf, value);
if (retval < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
break;
case IbcCICPROT:
// XXX
if (value) {
fprintf(stderr, "libgpib: pass control protocol not supported\n");
setIberr(ECAP);
return exit_library(ud, 1);
}else
return exit_library(ud, 0);
break;
case IbcIRQ:
// XXX
if (value == 0) {
fprintf(stderr, "libgpib: disabling interrupts not supported\n");
setIberr(ECAP);
return exit_library(ud, 1);
} else {
return exit_library(ud, 0);
}
break;
case IbcSC:
retval = internal_ibrsc(conf, value);
if (retval < 0)
return exit_library(ud, 1);
else
return exit_library(ud, 0);
break;
case IbcSRE:
if (value)
interfaceBoard(conf)->set_ren_on_sc = 1;
else
interfaceBoard(conf)->set_ren_on_sc = 0;
return exit_library(ud, 0);
break;
case IbcPP2:
retval = set_local_parallel_poll_mode(interfaceBoard(conf), value);
if (retval < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
break;
case IbcTIMING:
if (set_t1_delay(interfaceBoard(conf), value) < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
break;
case IbcDMA:
// XXX
if (value) {
return exit_library(ud, 0);
} else {
fprintf(stderr, "libgpib: disabling DMA not supported\n");
setIberr(ECAP);
return exit_library(ud, 1);
}
break;
case IbcEventQueue:
if (value) {
interfaceBoard(conf)->use_event_queue = 1;
} else {
interfaceBoard(conf)->use_event_queue = 0;
}
return exit_library(ud, 0);
break;
case IbcSPollBit:
/* fprintf(stderr, "libgpib: SPOLL bit support not implemented\n");
setIberr(ECAP);*/
/* we currently have some support for SPOLL in the nec7210 driver,
which is always enabled. It can only detect the occurance of
a serial poll if the board was requesting service when the
poll occurred. */
return exit_library(ud, 0);
break;
case IbcSendLLO:
// XXX
if (value) {
fprintf(stderr, "libgpib: sending local lockout on device open not implemented\n");
setIberr(ECAP);
return exit_library(ud, 1);
} else {
return exit_library(ud, 0);
}
break;
case IbcPPollTime:
retval = set_ppoll_timeout(conf, value);
if (retval < 0) {
setIberr(EARG);
return exit_library(ud, 1);
} else {
return exit_library(ud, 0);
}
break;
case IbcHSCableLength:
if (set_cable_length (conf, value) < 0) {
return exit_library(ud, 1);
} else {
return exit_library(ud, 0);
}
break;
case IbcIst:
retval = internal_ibist(conf, value);
if (retval < 0)
return exit_library(ud, 1);
else
return exit_library(ud, 0);
break;
case IbcRsv:
retval = internal_ibrsv2(conf, value, value & request_service_bit);
if (retval < 0)
return exit_library(ud, 1);
else
return exit_library(ud, 0);
break;
default:
break;
}
} else {
switch (option) {
case IbcREADDR:
/* We always re-address. To support only
* readdressing when necessary would require
* making the driver keep track of current addressing
* state. Maybe someday, but low priority. */
if (value)
conf->settings.readdr = 1;
else
conf->settings.readdr = 0;
return exit_library(ud, 0);
break;
case IbcSPollTime:
retval = set_spoll_timeout(conf, value);
if (retval < 0) {
setIberr(EARG);
return exit_library(ud, 1);
} else {
return exit_library(ud, 0);
}
break;
case IbcUnAddr:
if (value)
conf->settings.send_unt_unl = 1;
else
conf->settings.send_unt_unl = 0;
return exit_library(ud, 0);
break;
case IbcBNA:
retval = my_ibbna(conf, value);
if (retval < 0)
return exit_library(ud, 1);
else
return exit_library(ud, 0);
break;
default:
break;
}
}
setIberr(EARG);
return exit_library(ud, 1);
}
|
