static int usbduxsigma_ai_cmd(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
unsigned int len = cmd->chanlist_len;
uint8_t muxsg0 = 0;
uint8_t muxsg1 = 0;
uint8_t sysred = 0;
int ret;
int i;
down(&devpriv->sem);
if (devpriv->high_speed) {
/*
* every 2 channels get a time window of 125us. Thus, if we
* sample all 16 channels we need 1ms. If we sample only one
* channel we need only 125us
*/
unsigned int interval = usbduxsigma_chans_to_interval(len);
devpriv->ai_interval = interval;
devpriv->ai_timer = cmd->scan_begin_arg / (125000 * interval);
} else {
/* interval always 1ms */
devpriv->ai_interval = 1;
devpriv->ai_timer = cmd->scan_begin_arg / 1000000;
}
for (i = 0; i < len; i++) {
unsigned int chan = CR_CHAN(cmd->chanlist[i]);
create_adc_command(chan, &muxsg0, &muxsg1);
}
devpriv->dux_commands[1] = devpriv->ai_interval;
devpriv->dux_commands[2] = len; /* num channels per time step */
devpriv->dux_commands[3] = 0x12; /* CONFIG0 */
devpriv->dux_commands[4] = 0x03; /* CONFIG1: 23kHz sample, delay 0us */
devpriv->dux_commands[5] = 0x00; /* CONFIG3: diff. channels off */
devpriv->dux_commands[6] = muxsg0;
devpriv->dux_commands[7] = muxsg1;
devpriv->dux_commands[8] = sysred;
ret = usbbuxsigma_send_cmd(dev, USBBUXSIGMA_AD_CMD);
if (ret < 0) {
up(&devpriv->sem);
return ret;
}
devpriv->ai_counter = devpriv->ai_timer;
if (cmd->start_src == TRIG_NOW) {
/* enable this acquisition operation */
devpriv->ai_cmd_running = 1;
ret = usbduxsigma_submit_urbs(dev, devpriv->ai_urbs,
devpriv->n_ai_urbs, 1);
if (ret < 0) {
devpriv->ai_cmd_running = 0;
up(&devpriv->sem);
return ret;
}
s->async->inttrig = NULL;
} else { /* TRIG_INT */
s->async->inttrig = usbduxsigma_ai_inttrig;
}
up(&devpriv->sem);
return 0;
}
static int usbduxsigma_ai_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_cmd *cmd)
{
struct usbduxsigma_private *devpriv = dev->private;
int high_speed = devpriv->high_speed;
int interval = usbduxsigma_chans_to_interval(cmd->chanlist_len);
int err = 0;
/* Step 1 : check if triggers are trivially valid */
err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_TIMER);
err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
if (err)
return 1;
/* Step 2a : make sure trigger sources are unique */
err |= cfc_check_trigger_is_unique(cmd->start_src);
err |= cfc_check_trigger_is_unique(cmd->stop_src);
/* Step 2b : and mutually compatible */
if (err)
return 2;
/* Step 3: check if arguments are trivially valid */
err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
if (cmd->scan_begin_src == TRIG_FOLLOW) /* internal trigger */
err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
if (cmd->scan_begin_src == TRIG_TIMER) {
unsigned int tmp;
if (high_speed) {
/*
* In high speed mode microframes are possible.
* However, during one microframe we can roughly
* sample two channels. Thus, the more channels
* are in the channel list the more time we need.
*/
err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
(1000000 / 8 * interval));
tmp = (cmd->scan_begin_arg / 125000) * 125000;
} else {
/* full speed */
/* 1kHz scans every USB frame */
err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
1000000);
tmp = (cmd->scan_begin_arg / 1000000) * 1000000;
}
err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, tmp);
}
err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
if (cmd->stop_src == TRIG_COUNT)
err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1);
else /* TRIG_NONE */
err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
if (err)
return 3;
/* Step 4: fix up any arguments */
if (high_speed) {
/*
* every 2 channels get a time window of 125us. Thus, if we
* sample all 16 channels we need 1ms. If we sample only one
* channel we need only 125us
*/
devpriv->ai_interval = interval;
devpriv->ai_timer = cmd->scan_begin_arg / (125000 * interval);
} else {
/* interval always 1ms */
devpriv->ai_interval = 1;
devpriv->ai_timer = cmd->scan_begin_arg / 1000000;
}
if (devpriv->ai_timer < 1)
err |= -EINVAL;
if (cmd->stop_src == TRIG_COUNT) {
/* data arrives as one packet */
devpriv->ai_sample_count = cmd->stop_arg;
} else {
/* continuous acquisition */
devpriv->ai_sample_count = 0;
}
if (err)
return 4;
return 0;
}
static int usbduxsigma_ai_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_cmd *cmd)
{
struct usbduxsigma_private *devpriv = dev->private;
int high_speed = devpriv->high_speed;
int interval = usbduxsigma_chans_to_interval(cmd->chanlist_len);
unsigned int tmp;
int err = 0;
/* Step 1 : check if triggers are trivially valid */
err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_TIMER);
err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW);
err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
if (err)
return 1;
/* Step 2a : make sure trigger sources are unique */
err |= comedi_check_trigger_is_unique(cmd->start_src);
err |= comedi_check_trigger_is_unique(cmd->stop_src);
/* Step 2b : and mutually compatible */
if (err)
return 2;
/* Step 3: check if arguments are trivially valid */
err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
if (high_speed) {
/*
* In high speed mode microframes are possible.
* However, during one microframe we can roughly
* sample two channels. Thus, the more channels
* are in the channel list the more time we need.
*/
err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
(125000 * interval));
} else {
/* full speed */
/* 1kHz scans every USB frame */
err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
1000000);
}
err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
cmd->chanlist_len);
if (cmd->stop_src == TRIG_COUNT)
err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
else /* TRIG_NONE */
err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
if (err)
return 3;
/* Step 4: fix up any arguments */
tmp = rounddown(cmd->scan_begin_arg, high_speed ? 125000 : 1000000);
err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, tmp);
if (err)
return 4;
return 0;
}
