3 Anders Gnistrup <ex18@kalman.iau.dtu.dk>
9 Author: Anders Gnistrup <ex18@kalman.iau.dtu.dk>
10 Devices: [unknown] FL512 (fl512)
13 Digital I/O is not supported.
15 Configuration options:
16 [0] - I/O port base address
21 #include <linux/comedidev.h>
23 #include <linux/delay.h>
24 #include <linux/ioport.h>
26 #define FL512_SIZE 16 /* the size of the used memory */
28 sampl_t ao_readback[2];
30 #define devpriv ((fl512_private *) dev->private)
32 static comedi_lrange range_fl512 =
43 static int fl512_attach(comedi_device *dev,comedi_devconfig *it);
44 static int fl512_detach(comedi_device *dev);
46 static comedi_driver driver_fl512 = {
52 COMEDI_INITCLEANUP(driver_fl512);
54 static int fl512_ai_insn(comedi_device *dev,
58 static int fl512_ao_insn(comedi_device *dev,
62 static int fl512_ao_insn_readback(comedi_device *dev,
68 * fl512_ai_insn : this is the analog input function
70 static int fl512_ai_insn(comedi_device *dev,
76 unsigned int lo_byte, hi_byte;
77 char chan = CR_CHAN(insn->chanspec);
78 unsigned long iobase = dev->iobase;
80 for(n=0; n<insn->n; n++) { /* sample n times on selected channel */
81 /* XXX probably can move next step out of for() loop -- will make
82 * AI a little bit faster. */
83 outb(chan,iobase+2); /* select chan */
84 outb(0,iobase+3); /* start conversion */
85 /* XXX should test "done" flag instead of delay */
86 comedi_udelay(30); /* sleep 30 usec */
87 lo_byte = inb(iobase+2); /* low 8 byte */
88 hi_byte = inb(iobase+3) & 0xf; /* high 4 bit and mask */
89 data[n] = lo_byte + (hi_byte << 8);
95 * fl512_ao_insn : used to write to a DA port n times
97 static int fl512_ao_insn(comedi_device *dev,
103 int chan = CR_CHAN(insn->chanspec); /* get chan to write */
104 unsigned long iobase = dev->iobase; /* get base address */
106 for (n=0; n<insn->n; n++) { /* write n data set */
107 outb(data[n] & 0x0ff, iobase+4+2*chan); /* write low byte */
108 outb((data[n] & 0xf00) >> 8, iobase+4+2*chan); /* write high byte */
109 inb(iobase+4+2*chan); /* trig */
111 devpriv->ao_readback[chan]=data[n];
117 * fl512_ao_insn_readback : used to read previous values written to
120 static int fl512_ao_insn_readback(comedi_device *dev,
126 int chan = CR_CHAN(insn->chanspec);
128 for (n=0; n<insn->n; n++) {
129 data[n] = devpriv->ao_readback[chan];
138 static int fl512_attach(comedi_device *dev,comedi_devconfig *it)
140 unsigned long iobase;
141 comedi_subdevice *s; /* pointer to the subdevice:
142 Analog in, Analog out, ( not made ->and Digital IO) */
144 iobase = it->options[0];
145 printk("comedi:%d fl512: 0x%04lx",dev->minor,iobase);
146 if (!request_region(iobase, FL512_SIZE, "fl512")) {
147 printk(" I/O port conflict\n");
150 dev->iobase = iobase;
151 dev->board_name = "fl512";
152 if(alloc_private(dev,sizeof(fl512_private)) < 0)
156 printk("malloc ok\n");
159 if(alloc_subdevices(dev, 2)<0)
163 * this if the definitions of the supdevices, 2 have been defined
166 s = dev->subdevices+0;
167 s->type = COMEDI_SUBD_AI; /* define subdevice as Analog In */
168 s->subdev_flags = SDF_READABLE|SDF_GROUND;/* you can read it from userspace */
169 s->n_chan = 16; /* Number of Analog input channels */
170 s->maxdata = 0x0fff; /* accept only 12 bits of data */
171 s->range_table = &range_fl512; /* device use one of the ranges */
172 s->insn_read = fl512_ai_insn; /* function to call when read AD */
173 printk("comedi: fl512: subdevice 0 initialized\n");
176 s = dev->subdevices+1;
177 s->type = COMEDI_SUBD_AO; /* define subdevice as Analog OUT */
178 s->subdev_flags = SDF_WRITABLE; /* you can write it from userspace */
179 s->n_chan = 2; /* Number of Analog output channels */
180 s->maxdata = 0x0fff; /* accept only 12 bits of data */
181 s->range_table = &range_fl512; /* device use one of the ranges */
182 s->insn_write = fl512_ao_insn; /* function to call when write DA */
183 s->insn_read = fl512_ao_insn_readback; /* function to call when reading DA */
184 printk("comedi: fl512: subdevice 1 initialized\n");
189 static int fl512_detach(comedi_device *dev)
191 if (dev->iobase) release_region(dev->iobase,FL512_SIZE);
192 printk("comedi%d: fl512: dummy i detach\n",dev->minor);