S16asetdiodatareg, S16asetdiodirectionreg | Sun Microsystems S16A

Input and Output

S16A User’s Guide

s16a_set_dio_data_reg

Description

Write a specified value to the DIO Data register. Only the low 12 bits are significant; of these, bits that are configured as inputs are ignored when written.

Syntax

int s16a_set_dio_data_reg(S16aDev *s16a_p, int value);

Arguments
s16a_p	S16A device handle returned from s16a_open
value	Value to write to the DIO Data register.

Return

Returns 0 on success or –1 on failure. Fails if s16a_p does not refer to an output channel. Sets errno on failure.

s16a_set_dio_direction_reg

Description

Write a specified value to the DIO Direction register. The low 12 bits configure the corresponding DIO pins. If a bit is set, the DIO pin of the same number is configured as an output signal.

Syntax

int s16a_set_dio_direction_reg(S16aDev *s16a_p, int value);

Arguments
s16a_p	S16A device handle returned from s16a_open
value	Value to write to the DIO Direction register.

Return

Returns 0 on success or –1 on failure. Fails if s16a_p does not refer to an output channel. Sets errno on failure.

18	EDT, Inc. October, 1996

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Sun Microsystems S16A manual S16asetdiodatareg, S16asetdiodirectionreg

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 Routine Description DMA Library RoutinesGeneral DMA Library Routines Syntax S16abufferaddressesS16A-specific Library Routines Arguments S16acancelcurrent S16acancelS16achecknextbuffer S16aclose S16aconfigureringbuffers Arguments S16adone S16agetdaccontrolreg S16agetdiodatareg S16agetdiodirectionreg S16agetoutputbits S16aopen S16aread S16aserialread S16aserialstr S16aserialwrite S16asetdefaults S16asetdaccontrolreg S16asetdiodatareg S16asetdiodirectionreg S16asetoutputbits S16astartbuffers S16astopbuffers S16awaitforbuffer S16awaitfornextbuffer S16awrite Foiparityerror Error ConditionsError Codes and Conditions Hardware Interface Electrical Interface Signal S16A I/O Description Interface SignalsS16A Interface Signals Pin Signal Connector PinoutConnector Pinout Registers SBus Addresses S16A ROM Current DMA Address Registers DMA 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