DioGetOutputSlewRate

Applies To

GX5055, File.

Purpose

Returns the channel output rising and falling slew rate.

Syntax

DioGetOutputSlewRate (nHandle, nChannel, pdRisingEdge, pdFallingEdge, pdBias, pnStatus)

Parameters

Name
Type
Comments
nHandle
SHORT
DIO Master board handle, Board handle or File board handle.
nChannel
SHORT
If Board Handle was passed:
Channel number in the DIO board, each board has 32 I/O channels. I/O channels number range is 0-31.
If Master Board Handle was passed:
Channel number in the DIO domain, each DIO board adds 32 I/O channels. I/O channels number range is 0-991 (1 master and 30 slaves).
pdRisingEdge
PDOUBLE
Output rising slew rate values are 0.1V ns to 1.2V/ns.
pdFallingEdge
PDOUBLE
Output falling slew rate, values are 0.1V ns to 1.2V/ns.
pdBias
PDOUBLE
Returns the driver output bias current, values are 0-7.
The driver output stage has a programmable bias current to allow applications that require slower edge rates to consume less power.
pnStatus
PSHORT
Returned status: 0 on success, negative number on failure.

Comments

Each channel’s input high and low voltage threshold comparators have timing capability with the following characteristics:

●     Each output driver has a separate and independent adjustments for the rising and falling slew rate

●     Each output driver output stage has a programmable bias current to allow applications that require slower edge rates to consume less power.

●     Separate and independent delay circuitry for each channel.

Channels output rising and falling slew rates can be read back and set dynamically at any time even while the DIO is running mode.

Example

The following example returns channel output rising and falling slew rate:

 

DOUBLE dRisingEdge, dFallingEdge, dBias;

DioGetOutputSlewRate (nHandle, 0, &dRisingEdge, &dFallingEdge, &dBias, &nStatus);

 

See Also

DioSetupOutputSlewRate, DioSetupInputLoadCommutatingVoltage, DioSetupInputLoadResistance, DioSetupInputThresholdVoltages,  DioGetErrorString