option 1: I/O base address. The following table is provided as a help
of the hardware jumpers.
- address jumper JADR
- 0x300 1 (factory default)
- 0x320 2
- 0x340 3
- 0x360 4
- 0x380 5
- 0x3A0 6
+ address jumper JADR
+ 0x300 1 (factory default)
+ 0x320 2
+ 0x340 3
+ 0x360 4
+ 0x380 5
+ 0x3A0 6
option 2: unipolar/bipolar ADC selection: 0 -> bipolar, 1 -> unipolar
- selection comedi_config option JUB
- bipolar 0 2-3 (factory default)
- unipolar 1 1-2
+ selection comedi_config option JUB
+ bipolar 0 2-3 (factory default)
+ unipolar 1 1-2
option 3: single-ended/differential AI selection: 0 -> SE, 1 -> differential
- selection comedi_config option JCHA JCHB
+ selection comedi_config option JCHA JCHB
single-ended 0 1-2 1-2 (factory default)
differential 1 2-3 2-3
-
written by jeremy theler <thelerg@ib.cnea.gov.ar>
instituto balseiro
/* available ranges through the PGA gains */
static const struct comedi_lrange range_adq12b_ai_bipolar = { 4, {
- BIP_RANGE(5),
- BIP_RANGE(2),
- BIP_RANGE(1),
- BIP_RANGE(0.5)
-}};
+ BIP_RANGE(5),
+ BIP_RANGE(2),
+ BIP_RANGE(1),
+ BIP_RANGE(0.5)
+ }
+};
static const struct comedi_lrange range_adq12b_ai_unipolar = { 4, {
- UNI_RANGE(5),
- UNI_RANGE(2),
- UNI_RANGE(1),
- UNI_RANGE(0.5)
-}};
-
-
+ UNI_RANGE(5),
+ UNI_RANGE(2),
+ UNI_RANGE(1),
+ UNI_RANGE
+ (0.5)
+ }
+};
struct adq12b_board {
- const char *name;
- int ai_se_chans;
- int ai_diff_chans;
- int ai_bits;
- int di_chans;
- int do_chans;
+ const char *name;
+ int ai_se_chans;
+ int ai_diff_chans;
+ int ai_bits;
+ int di_chans;
+ int do_chans;
};
static const struct adq12b_board adq12b_boards[] = {
- {
- .name = "adq12b",
- .ai_se_chans = 16,
- .ai_diff_chans = 8,
- .ai_bits = 12,
- .di_chans = 5,
- .do_chans = 8
- }
+ {
+ .name = "adq12b",
+ .ai_se_chans = 16,
+ .ai_diff_chans = 8,
+ .ai_bits = 12,
+ .di_chans = 5,
+ .do_chans = 8}
/* potentially, more adq-based deviced will be added */
/*,
.name = "adq12b",
.ai_bits = 12,
.di_chans = 8,
.do_chans = 5
- }*/
+ }*/
};
#define thisboard ((const struct adq12b_board *)dev->board_ptr)
struct adq12b_private {
- int unipolar; /* option 2 of comedi_config (1 is iobase) */
- int differential; /* option 3 of comedi_config */
- int last_channel;
- int last_range;
- unsigned int digital_state;
+ int unipolar; /* option 2 of comedi_config (1 is iobase) */
+ int differential; /* option 3 of comedi_config */
+ int last_channel;
+ int last_range;
+ unsigned int digital_state;
};
#define devpriv ((struct adq12b_private *)dev->private)
* the board, and also about the kernel module that contains
* the device code.
*/
-static int adq12b_attach(struct comedi_device *dev, struct comedi_devconfig *it);
+static int adq12b_attach(struct comedi_device *dev,
+ struct comedi_devconfig *it);
static int adq12b_detach(struct comedi_device *dev);
-static struct comedi_driver driver_adq12b={
- driver_name: "adq12b",
- module: THIS_MODULE,
- attach: adq12b_attach,
- detach: adq12b_detach,
- board_name: &adq12b_boards[0].name,
- offset: sizeof(struct adq12b_board),
- num_names: ARRAY_SIZE(adq12b_boards),
+
+static struct comedi_driver driver_adq12b = {
+ .driver_name = "adq12b",
+ .module = THIS_MODULE,
+ .attach = adq12b_attach,
+ .detach = adq12b_detach,
+ .board_name = &adq12b_boards[0].name,
+ .offset = sizeof(struct adq12b_board),
+ .num_names = ARRAY_SIZE(adq12b_boards),
};
-static int adq12b_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data);
-static int adq12b_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data);
-static int adq12b_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data);
+static int adq12b_ai_rinsn(struct comedi_device *dev,
+ struct comedi_subdevice *s, struct comedi_insn *insn,
+ unsigned int *data);
+static int adq12b_di_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+static int adq12b_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
/*
* Attach is called by the Comedi core to configure the driver
*/
static int adq12b_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
- struct comedi_subdevice *s;
- unsigned long iobase;
- int unipolar, differential;
-
- iobase = it->options[0];
- unipolar = it->options[1];
- differential = it->options[2];
-
- printk("comedi%d: adq12b called with options base=0x%03lx, %s and %s\n", dev->minor, iobase, (unipolar==1)?"unipolar":"bipolar", (differential==1) ? "differential" : "single-ended");
-
- /* if no address was specified, try the default 0x300 */
- if (iobase == 0) {
- printk("comedi%d: adq12b warning: I/O base address not specified. Trying the default 0x300.\n", dev->minor);
- iobase = 0x300;
- }
-
- printk("comedi%d: adq12b: 0x%04lx ", dev->minor, iobase);
- if (!request_region(iobase, ADQ12B_SIZE, "adq12b")) {
- printk("I/O port conflict\n");
- return -EIO;
- }
- dev->iobase = iobase;
+ struct comedi_subdevice *s;
+ unsigned long iobase;
+ int unipolar, differential;
+
+ iobase = it->options[0];
+ unipolar = it->options[1];
+ differential = it->options[2];
+
+ printk(KERN_INFO "comedi%d: adq12b called with options base=0x%03lx, "
+ "%s and %s\n", dev->minor, iobase,
+ (unipolar == 1) ? "unipolar" : "bipolar",
+ (differential == 1) ? "differential" : "single-ended");
+
+ /* if no address was specified, try the default 0x300 */
+ if (iobase == 0) {
+ printk(KERN_WARNING "comedi%d: adq12b warning: I/O base "
+ "address not specified. Trying the default 0x300.\n",
+ dev->minor);
+ iobase = 0x300;
+ }
+
+ printk("comedi%d: adq12b: 0x%04lx ", dev->minor, iobase);
+ if (!request_region(iobase, ADQ12B_SIZE, "adq12b")) {
+ printk("I/O port conflict\n");
+ return -EIO;
+ }
+ dev->iobase = iobase;
/*
* Initialize dev->board_name. Note that we can use the "thisboard"
* macro now, since we just initialized it in the last line.
*/
- dev->board_name = thisboard->name;
+ dev->board_name = thisboard->name;
/*
* Allocate the private structure area. alloc_private() is a
* convenient macro defined in comedidev.h.
*/
- if (alloc_private (dev, sizeof (struct adq12b_private)) < 0)
- return -ENOMEM;
+ if (alloc_private(dev, sizeof(struct adq12b_private)) < 0)
+ return -ENOMEM;
/* fill in devpriv structure */
- devpriv->unipolar = unipolar;
- devpriv->differential = differential;
+ devpriv->unipolar = unipolar;
+ devpriv->differential = differential;
devpriv->digital_state = 0;
/* initialize channel and range to -1 so we make sure we always write
at least once to the CTREG in the instruction */
- devpriv->last_channel = -1;
- devpriv->last_range = -1;
-
+ devpriv->last_channel = -1;
+ devpriv->last_range = -1;
/*
* Allocate the subdevice structures. alloc_subdevice() is a
* convenient macro defined in comedidev.h.
*/
- if (alloc_subdevices (dev, 3)<0)
- return -ENOMEM;
-
- s = dev->subdevices+0;
- /* analog input subdevice */
- s->type = COMEDI_SUBD_AI;
- if (differential) {
- s->subdev_flags = SDF_READABLE|SDF_GROUND|SDF_DIFF;
- s->n_chan = thisboard->ai_diff_chans;
- } else {
- s->subdev_flags = SDF_READABLE|SDF_GROUND;
- s->n_chan = thisboard->ai_se_chans;
- }
-
- if (unipolar) {
- s->range_table = &range_adq12b_ai_unipolar;
- } else {
- s->range_table = &range_adq12b_ai_bipolar;
- }
-
- s->maxdata = (1 << thisboard->ai_bits)-1;
-
-
- s->len_chanlist = 4; /* This is the maximum chanlist length that
- the board can handle */
- s->insn_read = adq12b_ai_rinsn;
-
-
- s = dev->subdevices+1;
- /* digital input subdevice */
- s->type = COMEDI_SUBD_DI;
- s->subdev_flags = SDF_READABLE;
- s->n_chan=thisboard->di_chans;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = adq12b_di_insn_bits;
-
- s = dev->subdevices+2;
- /* digital output subdevice */
- s->type = COMEDI_SUBD_DO;
- s->subdev_flags = SDF_WRITABLE;
- s->n_chan = thisboard->do_chans;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = adq12b_do_insn_bits;
-
-
- printk("attached\n");
-
- return 0;
+ if (alloc_subdevices(dev, 3) < 0)
+ return -ENOMEM;
+
+ s = dev->subdevices + 0;
+ /* analog input subdevice */
+ s->type = COMEDI_SUBD_AI;
+ if (differential) {
+ s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
+ s->n_chan = thisboard->ai_diff_chans;
+ } else {
+ s->subdev_flags = SDF_READABLE | SDF_GROUND;
+ s->n_chan = thisboard->ai_se_chans;
+ }
+
+ if (unipolar)
+ s->range_table = &range_adq12b_ai_unipolar;
+ else
+ s->range_table = &range_adq12b_ai_bipolar;
+
+ s->maxdata = (1 << thisboard->ai_bits) - 1;
+
+ s->len_chanlist = 4; /* This is the maximum chanlist length that
+ the board can handle */
+ s->insn_read = adq12b_ai_rinsn;
+
+ s = dev->subdevices + 1;
+ /* digital input subdevice */
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = thisboard->di_chans;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = adq12b_di_insn_bits;
+
+ s = dev->subdevices + 2;
+ /* digital output subdevice */
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = thisboard->do_chans;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = adq12b_do_insn_bits;
+
+ printk(KERN_INFO "attached\n");
+
+ return 0;
}
-
/*
* _detach is called to deconfigure a device. It should deallocate
* resources.
*/
static int adq12b_detach(struct comedi_device *dev)
{
- if (dev->iobase)
- release_region(dev->iobase, ADQ12B_SIZE);
+ if (dev->iobase)
+ release_region(dev->iobase, ADQ12B_SIZE);
- kfree(devpriv);
+ kfree(devpriv);
- printk("comedi%d: adq12b: removed\n", dev->minor);
+ printk(KERN_INFO "comedi%d: adq12b: removed\n", dev->minor);
- return 0;
+ return 0;
}
/*
* mode.
*/
-static int adq12b_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data)
+static int adq12b_ai_rinsn(struct comedi_device *dev,
+ struct comedi_subdevice *s, struct comedi_insn *insn,
+ unsigned int *data)
{
- int n, i;
- int range, channel;
- unsigned char hi, lo, status;
-
- /* change channel and range only if it is different from the previous */
- range = CR_RANGE(insn->chanspec);
- channel = CR_CHAN(insn->chanspec);
- if (channel != devpriv->last_channel || range != devpriv->last_range) {
- outb((range << 4) | channel, dev->iobase + ADQ12B_CTREG);
- comedi_udelay(50); /* wait for the mux to settle */
- }
-
- /* trigger conversion */
- status = inb(dev->iobase + ADQ12B_ADLOW);
-
- /* convert n samples */
- for (n=0; n < insn->n; n++){
-
- /* wait for end of convertion */
- i = 0;
- do {
-/* comedi_udelay(1); */
- status = inb(dev->iobase + ADQ12B_STINR);
- status = status & ADQ12B_EOC;
- } while (status == 0 && ++i < TIMEOUT);
-/* } while (++i < 10); */
-
- /* read data */
- hi = inb(dev->iobase + ADQ12B_ADHIG);
- lo = inb(dev->iobase + ADQ12B_ADLOW);
-
- /* rt_printk("debug: chan=%d range=%d status=%d hi=%d lo=%d\n", channel, range, status, hi, lo); */
- data[n] = (hi << 8) | lo;
-
- }
-
- /* return the number of samples read/written */
- return n;
+ int n, i;
+ int range, channel;
+ unsigned char hi, lo, status;
+
+ /* change channel and range only if it is different from the previous */
+ range = CR_RANGE(insn->chanspec);
+ channel = CR_CHAN(insn->chanspec);
+ if (channel != devpriv->last_channel || range != devpriv->last_range) {
+ outb((range << 4) | channel, dev->iobase + ADQ12B_CTREG);
+ udelay(50); /* wait for the mux to settle */
+ }
+
+ /* trigger conversion */
+ status = inb(dev->iobase + ADQ12B_ADLOW);
+
+ /* convert n samples */
+ for (n = 0; n < insn->n; n++) {
+
+ /* wait for end of convertion */
+ i = 0;
+ do {
+ /* udelay(1); */
+ status = inb(dev->iobase + ADQ12B_STINR);
+ status = status & ADQ12B_EOC;
+ } while (status == 0 && ++i < TIMEOUT);
+ /* } while (++i < 10); */
+
+ /* read data */
+ hi = inb(dev->iobase + ADQ12B_ADHIG);
+ lo = inb(dev->iobase + ADQ12B_ADLOW);
+
+ /* printk("debug: chan=%d range=%d status=%d hi=%d lo=%d\n",
+ channel, range, status, hi, lo); */
+ data[n] = (hi << 8) | lo;
+
+ }
+
+ /* return the number of samples read/written */
+ return n;
}
-
-static int adq12b_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data)
+static int adq12b_di_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data)
{
- /* only bits 0-4 have information about digital inputs */
- data[1] = (inb(dev->iobase+ADQ12B_STINR) & (0x1f));
+ /* only bits 0-4 have information about digital inputs */
+ data[1] = (inb(dev->iobase + ADQ12B_STINR) & (0x1f));
- return 2;
+ return 2;
}
-
-static int adq12b_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data)
+static int adq12b_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data)
{
- int channel;
+ int channel;
for (channel = 0; channel < 8; channel++)
- if (((data[0]>>channel) & 0x01) != 0)
- outb((((data[1]>>channel)&0x01)<<3) | channel, dev->iobase + ADQ12B_OUTBR);
+ if (((data[0] >> channel) & 0x01) != 0)
+ outb((((data[1] >> channel) & 0x01) << 3) | channel,
+ dev->iobase + ADQ12B_OUTBR);
- /* store information to retrieve when asked for reading */
- if (data[0]) {
- devpriv->digital_state &= ~data[0];
- devpriv->digital_state |= (data[0]&data[1]);
- }
+ /* store information to retrieve when asked for reading */
+ if (data[0]) {
+ devpriv->digital_state &= ~data[0];
+ devpriv->digital_state |= (data[0] & data[1]);
+ }
- data[1] = devpriv->digital_state;
+ data[1] = devpriv->digital_state;
- return 2;
+ return 2;
}
-
/*
* A convenient macro that defines init_module() and cleanup_module(),
* as necessary.
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff