S16agetoutputbits, S16aopen | Sun Microsystems S16A specs

Input and Output

S16A User’s Guide

s16a_get_output_bits

Description

Get the output resolution of the S16A. Returns 16 or 20, reflecting the current driver setting for the output channel.

Syntax

int s16a_get_output_bits(S16aDev *s16a_p);

Arguments

s16a_p

S16A device handle returned from s16a_open

Return

Returns 16 or 20 on success; returns –1 if the ioctl driver call fails, and sets errno to indicate the problem.

s16a_open

Description

Opens the specified S16A and sets up the device handle.

Syntax

S16aDev *s16a_open(int unit, int channel, int output);

Arguments
unit	specifies the device unit number
channel	specifies the analog I/O channel number: 0 or 1
output	specifies the direction: 1 means the output subdevice; 0 means the input subdevice

Return

A handle of type (S16aDev *), or NULL if error. If an error occurs, check the errno global variable for the error number.

14	EDT, Inc. October, 1996

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Sun Microsystems S16A manual S16agetoutputbits, S16aopen

Contents

S16A EDT, Inc. October Contents Tables Overview Installing the Software InstallationInstalling the Hardware Using SunOS Version S16A User’s Guide Installation Using System V Release 4 Solaris 2.4 or Later Building the Sample Programs Included Files Readme Input and Output Elements of S16A Applications DMA Library Routines Routine DescriptionGeneral DMA Library Routines Syntax S16abufferaddressesS16A-specific Library Routines Arguments S16acancel S16acancelcurrentS16achecknextbuffer S16aclose S16aconfigureringbuffers Arguments S16adone S16agetdaccontrolreg S16agetdiodatareg S16agetdiodirectionreg S16agetoutputbits S16aopen S16aread S16aserialread S16aserialstr S16aserialwrite S16asetdefaults S16asetdaccontrolreg S16asetdiodatareg S16asetdiodirectionreg S16asetoutputbits S16astartbuffers S16astopbuffers S16awaitforbuffer S16awaitfornextbuffer S16awrite Error Conditions FoiparityerrorError Codes and Conditions Hardware Interface Electrical Interface Interface Signals Signal S16A I/O DescriptionS16A Interface Signals Connector Pinout Pin SignalConnector Pinout Registers SBus Addresses S16A ROM DMA Registers Current DMA Address RegistersNext DMA Address Registers Current Count Registers Control and Next Count Registers DIO Direction Register Direct I/O RegistersDAC Output Control Register DIO Data Register Name Description Analog Input Module Internal RegistersDAC Output Control Register Analog Input Module Internal Registers Input Configuration Registers Input Clock Prescale Registers Trim Register Use Trim RegistersInput Gain High Byte Values Trim Registers Trim Output Offset Registers Analog Input Module Control Protocol Temperature RegisterAnalog Input Module Uart Registers Trim Input Gain Registers Write to a Clock Prescale Register Write to an Input Configuration RegisterRead from an Input Configuration Register Read from a Clock Prescale Register Uart Command/Status Register Uart Command/Status RegisterRead the Temperature Register Write to a Trim Register Xilinx Programming Registers Uart Data Register Specifications References Contacting EDT Index 15-16 Configuration ROM