fixed a bug I created

diff --git a/comedi/drivers/cb_pcidas.c b/comedi/drivers/cb_pcidas.c
index 47b57196eb3dc756ded24eefc6268b647cbdf458..ebf9c7eaba244b0021b1cd0b986c34889716555a 100644 (file)
--- a/comedi/drivers/cb_pcidas.c
+++ b/comedi/drivers/cb_pcidas.c
@@ -116,8 +116,8 @@ Asynchronous analog input support added by Frank Mori Hess.
 #define ADC8254 0
 #define DIO_8255 4
 
-// bit in hexadecimal representation of range index that indicates bipolar range
-#define IS_BIPOLAR 0x4
+// bit in hexadecimal representation of range index that indicates unipolar range
+#define IS_UNIPOLAR 0x4
 comedi_lrange cb_pcidas_ranges =
 {
        8,
@@ -592,10 +592,10 @@ static int cb_pcidas_ai_rinsn(comedi_device *dev, comedi_subdevice *s,
                command |= SE;
 
        /* input signals range */
-       if (CR_RANGE(insn->chanspec) & IS_BIPOLAR)
-               command |= CR_RANGE(insn->chanspec) << 8;
-       else
+       if (CR_RANGE(insn->chanspec) & IS_UNIPOLAR)
                command |= UNIP | GAIN_BITS(CR_RANGE(insn->chanspec));
+       else
+               command |= GAIN_BITS(CR_RANGE(insn->chanspec));
 
        /* write channel to multiplexer */
        command |= CR_CHAN(insn->chanspec) | (CR_CHAN(insn->chanspec) << 4);
@@ -786,7 +786,7 @@ static int cb_pcidas_ai_cmd(comedi_device *dev,comedi_subdevice *s)
                END_SCAN(CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1])) |
                GAIN_BITS(CR_RANGE(cmd->chanlist[0]));
        // set unipolar/bipolar
-       if((CR_RANGE(cmd->chanlist[0]) & IS_BIPOLAR) == 0)
+       if(CR_RANGE(cmd->chanlist[0]) & IS_UNIPOLAR)
                bits |= UNIP;
        // set singleended/differential
        if(CR_AREF(cmd->chanlist[0]) != AREF_DIFF)