Added some documentation of 32 bit dio port.

diff --git a/comedi/drivers/ni_660x.c b/comedi/drivers/ni_660x.c
index af257ece1c9d21b57fc9c0440f1c08546f5493fa..a7e86212d2ddfd422828aa78bde00453bb7a01ab 100644 (file)
--- a/comedi/drivers/ni_660x.c
+++ b/comedi/drivers/ni_660x.c
@@ -148,6 +148,8 @@ typedef enum
        STCDIOOutput,
        STCDIOControl,
        STCDIOSerialInput,
+       DIO32Input,
+       DIO32Output,
        NumRegisters,
 } NI_660x_Register;
 
@@ -276,6 +278,8 @@ static const NI_660xRegisterData registerData[NumRegisters] =
        {"STD DIO Output", 0x014, NI_660x_WRITE, DATA_2B},
        {"STD DIO Control", 0x016, NI_660x_WRITE, DATA_2B},
        {"STD DIO Serial Input", 0x038, NI_660x_READ, DATA_2B},
+       {"32 bit Digital Input", 0x414, NI_660x_READ, DATA_4B},
+       {"32 bit Digital Output", 0x414, NI_660x_WRITE, DATA_4B}
 };
 
 #define GateSelectPin38                0x1<<8 // Take internal time-based 20
@@ -794,6 +798,8 @@ static int ni_660x_dio_insn_bits(comedi_device *dev,
                the user manual implies the first 32 channels can be used as
                general purpose dio, the register manual doesn't tell you how
                this can be accomplished. */
+               /*FIXME: use DIO32Input and DIO32Output registers for dio
+               to the 32 bit port */
                if((data[0] << base_bitfield_channel) > 0xff)
                {
                        return -EINVAL;
@@ -842,6 +848,7 @@ static int ni_660x_dio_insn_config(comedi_device *dev,
        {
        case INSN_CONFIG_DIO_OUTPUT:
                devpriv->pfi_direction_bits |= ((uint64_t)1) << chan;
+               //FIXME: output select 1 is counter output, 2 is digital output
                ni_660x_select_pfi_output(dev, chan, 1);
                break;
        case INSN_CONFIG_DIO_INPUT: