noinst_PROGRAMS = \
- antialias ao_waveform ao_mmap apply_cal cmd dio eeprom_dump board_info \
+ antialias ao_waveform ao_mmap apply_cal choose_clock \
+ choose_routing cmd dio eeprom_dump board_info \
inp inpn insn ledclock mmap outp poll receiver select \
sender sigio sv tut1 tut2
apply_cal_CFLAGS = $(COMEDILIB_CFLAGS)
apply_cal_LDADD = $(COMEDILIB_LIBS)
+choose_clock_SOURCES = choose_clock.c common.c
+choose_clock_CFLAGS = $(COMEDILIB_CFLAGS)
+choose_clock_LDADD = $(COMEDILIB_LIBS)
+
+choose_routing_SOURCES = choose_routing.c common.c
+choose_routing_CFLAGS = $(COMEDILIB_CFLAGS)
+choose_routing_LDADD = $(COMEDILIB_LIBS)
+
cmd_SOURCES = cmd.c common.c
cmd_CFLAGS = $(COMEDILIB_CFLAGS)
cmd_LDADD = $(COMEDILIB_LIBS)
which currently is some of the members of the NI AT-MIO and PCI-MIO
E series. Creates a sine wave on an analog output channel.
+board_info:
+ Displays some information that Comedi knows about a device.
+
+choose_clock:
+ Selects a master clock source. The subdevice must support
+ INSN_CONFIG_CLOCK_SRC. The command-line argument specifies
+ the clock source, and the optional -F option specifies the clock's
+ frequency.
+
common:
This is not an example. The file common.c just contains some code
that is common to many of the examples.
-cmd:
+cmd:
An example for directly using Comedi commands. Comedi commands
are used for asynchronous acquisition, with the timing controlled
by on-board timers or external events. If this demo doesn't work
with your hardware, read the comments in the source. Hint: data
is written to stdout, comments to stderr.
-
+
dio:
Requirements: A board with a digital I/O subdevice. Not just
a 'digital input' or 'digital output' subdevice, but one in
which the channels can be configured between input and output.
+ Configures the specified channel as an output if passed a
+ nonzero argument. Otherwise, the channel is configured as
+ an input. Once the channel's direction has been configured,
+ you can read/write to it with the inp/outp demo programs.
eeprom_dump:
Dumps the EEPROM of a card, if it has one. Useful for debugging
devices/drivers.
-board_info:
- Displays some information that Comedi knows about a device.
-
inp:
Simple input: Reads one sample from one channel on one subdevice.
Example showing how to use instructions directly. Not
recommended for beginners: use higher-level functions such
as comedi_data_read(), comedi_data_write(), etc., as demonstrated
- in the inp, outp, and dio examples.
-
+ in the inp, outp, and dio examples.
+
ledclock:
This demo requires a Fantazein clock modified to be directly
controlled by the parallel port on a computer. The original
requires a digital output subdevice. When the clock and data
pins are connected between the sending and receiving devices,
one should be able to send bits over the link.
-
+
select:
An example for using select() with asynchronous input. This
example requires an asynchronous input subdevice that can
--- /dev/null
+/*
+ * Digital I/O example
+ * Part of Comedilib
+ *
+ * Copyright (c) 1999,2000 David A. Schleef <ds@schleef.org>
+ *
+ * This file may be freely modified, distributed, and combined with
+ * other software, as long as proper attribution is given in the
+ * source code.
+ */
+/*
+ * Requirements: A board with a subdevice that supports
+ * INSN_CONFIG_CLOCK_SRC
+ */
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <comedilib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <getopt.h>
+#include <ctype.h>
+#include "examples.h"
+
+
+comedi_t *device;
+
+int main(int argc, char *argv[])
+{
+ freq = 0.;
+ parse_options(argc,argv);
+
+ device=comedi_open(filename);
+ if(!device){
+ comedi_perror(filename);
+ exit(0);
+ }
+ unsigned period_ns;
+ if(freq > 0.)
+ period_ns = 1e9 / freq;
+ else
+ period_ns = 0;
+ printf("Selecting master clock %d on subdevice %d.\n", value, subdevice);
+ if(period_ns)
+ {
+ printf("Clock period = %d nanoseconds.\n", period_ns);
+ }else
+ {
+ printf("Clock period unspecified.\n");
+ }
+ comedi_insn insn;
+ lsampl_t data[3];
+ memset(&insn, 0, sizeof(comedi_insn));
+ insn.insn = INSN_CONFIG;
+ insn.subdev = subdevice;
+ insn.data = data;
+ insn.n = sizeof(data) / sizeof(data[0]);
+ data[0] = INSN_CONFIG_SET_CLOCK_SRC;
+ data[1] = value;
+ data[2] = period_ns;
+
+ int retval = comedi_do_insn(device, &insn);
+ if(retval < 0) comedi_perror("comedi_do_insn");
+ return retval;
+}
+
--- /dev/null
+/*
+ * Digital I/O example
+ * Part of Comedilib
+ *
+ * Copyright (c) 1999,2000 David A. Schleef <ds@schleef.org>
+ *
+ * This file may be freely modified, distributed, and combined with
+ * other software, as long as proper attribution is given in the
+ * source code.
+ */
+/*
+ * Requirements: A board with a subdevice that supports
+ * INSN_CONFIG_SET_ROUTING
+ */
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <comedilib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <getopt.h>
+#include <ctype.h>
+#include "examples.h"
+
+
+comedi_t *device;
+
+int main(int argc, char *argv[])
+{
+ freq = 0.;
+ parse_options(argc,argv);
+
+ device=comedi_open(filename);
+ if(!device){
+ comedi_perror(filename);
+ exit(0);
+ }
+ unsigned period_ns;
+ if(freq > 0.)
+ period_ns = 1e9 / freq;
+ else
+ period_ns = 0;
+ printf("Selecting routing %d for channel %d on subdevice %d.\n", value, channel, subdevice);
+ comedi_insn insn;
+ lsampl_t data[2];
+ memset(&insn, 0, sizeof(comedi_insn));
+ insn.insn = INSN_CONFIG;
+ insn.subdev = subdevice;
+ insn.chanspec = channel;
+ insn.data = data;
+ insn.n = sizeof(data) / sizeof(data[0]);
+ data[0] = INSN_CONFIG_SET_ROUTING;
+ data[1] = value;
+
+ int retval = comedi_do_insn(device, &insn);
+ if(retval < 0) comedi_perror("comedi_do_insn");
+ return retval;
+}
+
exit(0);
}
- printf("configuring pin %d for output...\n",channel);
-
- ret=comedi_dio_config(device,subdevice,channel,COMEDI_OUTPUT);
-
- printf("toggling pin %d rapidly...\n",channel);
-
- comedi_dio_write(device,subdevice,channel,1);
-#if 0
- for(i=0;i<10000;i++){
- usleep(1000000);
- comedi_dio_write(device,subdevice,channel,1);
- printf("1\n");
- usleep(1000000);
- comedi_dio_write(device,subdevice,channel,0);
- printf("0\n");
- }
-#endif
-
-#if 0
+ printf("configuring pin %d or subdevice %d ", channel, subdevice);
+ if(value)
{
- unsigned int mask;
- unsigned int data;
-
- printf("toggling pin %d rapidly (using bitfield)...\n",channel);
-
- mask = 1<<channel;
- for(i=0;i<10000;i++){
- data = mask;
- comedi_dio_bitfield(device,subdevice,mask,&data);
- data = 0;
- comedi_dio_bitfield(device,subdevice,mask,&data);
- }
+ printf("for output.\n");
+ ret=comedi_dio_config(device,subdevice,channel, COMEDI_OUTPUT);
+ }else
+ {
+ printf("for input.\n");
+ ret=comedi_dio_config(device,subdevice,channel, COMEDI_INPUT);
}
-#endif
-
return 0;
}
INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR = 1001, // Use CTR as single pulsegenerator
INSN_CONFIG_GPCT_PULSE_TRAIN_GENERATOR = 1002, // Use CTR as pulsetraingenerator
INSN_CONFIG_GPCT_QUADRATURE_ENCODER = 1003, // Use the counter as encoder
- INSN_CONFIG_SET_GATE_SRC = 2001, // Set CTR gate source
- INSN_CONFIG_GET_GATE_SRC = 2002, // Get CTR gate source
- INSN_CONFIG_SET_CLOCK_SRC = 2003, // Set CTR clock source
- INSN_CONFIG_GET_CLOCK_SRC = 2004, // Get CTR clock source
+ INSN_CONFIG_SET_GATE_SRC = 2001, // Set gate source
+ INSN_CONFIG_GET_GATE_SRC = 2002, // Get gate source
+ INSN_CONFIG_SET_CLOCK_SRC = 2003, // Set master clock source
+ INSN_CONFIG_GET_CLOCK_SRC = 2004, // Get master clock source
INSN_CONFIG_8254_SET_MODE = 4097,
INSN_CONFIG_8254_READ_STATUS = 4098,
- INSN_CONFIG_SET_RTSI_CLOCK_MODE = 5000 // Set RTSI bus clock mode
+ INSN_CONFIG_SET_ROUTING = 4099,
+ INSN_CONFIG_GET_ROUTING = 4109,
};
I8254_BINARY = 0
};
-/* RTSI Clock mode */
-#define COMEDI_RTSI_CLOCK_MODE_INTERNAL 0x00 // Internal clock mode
-#define COMEDI_RTSI_CLOCK_MODE_OUTPUT 0x01 // Outputs clock to RTSI
-#define COMEDI_RTSI_CLOCK_MODE_SLAVE 0x02 // Runs from RTSI clock
-#define COMEDI_RTSI_CLOCK_MODE_MASTER 0x03 // Outputs clock to RTSI and runs from this external clock
-
-/* RTSI BUS pins */
-#define NI_RTSI_0 0
-#define NI_RTSI_1 1
-#define NI_RTSI_2 2
-#define NI_RTSI_3 3
-#define NI_RTSI_4 4
-#define NI_RTSI_5 5
-#define NI_RTSI_6 6
-#define NI_RTSI_7 7
-
-/* RTSI BUS pin usage in standard configuration */
-#define NI_RTSI_STD_AI_START1 0
-#define NI_RTSI_STD_AI_START2 1
-#define NI_RTSI_STD_AI_CONV 2
-#define NI_RTSI_STD_CT1_SRC 3
-#define NI_RTSI_STD_CT1_GATE 4
-#define NI_RTSI_STD_AO_SAMP_CLOCK 5
-#define NI_RTSI_STD_AO_START_TRIG 6
-#define NI_RTSI_STD_AI_SAMP_CLOCK 7
-#define NI_RTSI_STD_CTR0_SRC 8
-#define NI_RTSI_STD_CTR0_GATE 9
+/* clock sources for ni mio boards and INSN_CONFIG_SET_CLOCK_SRC */
+enum ni_mio_clock_source
+{
+ NI_MIO_INTERNAL_CLOCK = 0,
+ NI_MIO_RTSI_CLOCK = 1, /* doesn't work for m-series, use NI_MIO_PLL_RTSI_CLOCK() */
+ /* the NI_MIO_PLL_* sources are m-series only */
+ NI_MIO_PLL_PXI_STAR_TRIGGER_CLOCK = 2,
+ NI_MIO_PLL_PXI10_CLOCK = 3,
+ NI_MIO_PLL_RTSI0_CLOCK = 4
+};
+static inline unsigned NI_MIO_PLL_RTSI_CLOCK(unsigned rtsi_channel)
+{
+ return NI_MIO_PLL_RTSI0_CLOCK + rtsi_channel;
+}
+
+/* Signals which can be routed to an NI RTSI pin with INSN_CONFIG_SET_ROUTING.
+ The numbers are assigned are not arbitrary, they correspond to the bits required
+ to program the board. */
+enum ni_rtsi_output
+{
+ NI_RTSI_OUTPUT_ADR_START1 = 0,
+ NI_RTSI_OUTPUT_ADR_START2 = 1,
+ NI_RTSI_OUTPUT_SCLKG = 2,
+ NI_RTSI_OUTPUT_DACUPDN = 3,
+ NI_RTSI_OUTPUT_DA_START1 = 4,
+ NI_RTSI_OUTPUT_G_SRC_0 = 5,
+ NI_RTSI_OUTPUT_G_GATE_0 = 6,
+ NI_RTSI_OUTPUT_RGOUT0 = 7,
+ NI_RTSI_OUTPUT_RTSI_BRD_0 = 8,
+ NI_RTSI_OUTPUT_RTSI_OSC = 12 /* m-series only */
+};
+static inline unsigned NI_RTSI_OUTPUT_RTSI_BRD(unsigned n)
+{
+ return NI_RTSI_OUTPUT_RTSI_BRD_0 + n;
+}
/* NI External Trigger lines */
#define NI_EXT_PFI_0 0
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