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Sun Microsystems S16A manual s16aread, s16aserialread, Description, Syntax, Arguments, s16ap, size

Models: S16A

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S16A User’s Guide

Input and Output

s16a_read

Description

Performs a read on the S16A. The UNIX 2 GB file offset bug is avoided during large amounts of input or

output, that is, reading past 231 does not fail. This call is not multibuffering, and no transfer is active when it completes.

Syntax

int s16a_read(S16aDev *s16a_p, void *buf, int size);

Arguments
s16a_p	S16A device handle returned from s16a_open
buf	address of buffer to read into
size	size of read in bytes

Return

The return value from read; errno is set by read on error.

s16a_serial_read

Description

Read a response string from the Analog Input Module.

Syntax

int s16a_serial_read(S16aDev *s16a_p, char *buf, size);

Arguments
s16a_p	S16A device struct, returned from s16a_open
buf	Array of characters to receive the response string from the Analog Input Module
size	Number of characters in the buffer

Return

Returns the actual number of bytes transferred; or –1 on ioctl error. Sets errno on failure.

EDT, Inc. October, 1996

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Sun Microsystems S16A s16aread, s16aserialread, Description, Syntax, Arguments, s16ap, address of buffer to read into

Contents

USER’S GUIDE S16AS16A User’s Guide Contents Tables Input and Output OverviewInstallation SpecificationsUsing SunOS Version InstallationInstalling the Hardware Installing the Software4. Place the diskette that came with the S16A into the diskette drive volcheck pkgadd -d /floppy/floppy0 EDTs16a Using System V Release 4 Solaris 2.4 or LaterBuilding the Sample Programs make unloadIncluded Files Elements of S16A Applications Input and OutputTable 1. General DMA Library Routines DMA Library RoutinesRoutine DescriptionTable 2. S16A-specific Library Routines s16abufferaddressesRoutine DescriptionDescription s16acancels16acancelcurrent s16achecknextbufferint s16acloseS16aDev *s16ap s16acloseDescription SyntaxArguments s16aconfigureringbuffersDescription SyntaxSyntax s16adones16agetdaccontrolreg DescriptionSyntax s16agetdiodataregs16agetdiodirectionreg DescriptionSyntax s16agetoutputbitss16aopen DescriptionSyntax s16areads16aserialread DescriptionNumber of characters in the command string s16aserialstrs16aserialwrite Null-terminated command string to send to the Analog Input ModuleSyntax s16asetdefaultss16asetdaccontrolreg DescriptionSyntax s16asetdiodataregs16asetdiodirectionreg DescriptionSyntax s16asetoutputbitss16astartbuffers DescriptionSyntax s16astopbufferss16awaitforbuffer DescriptionSyntax s16awaitfornextbuffers16awrite DescriptionError Condition Error Conditionsfoiparityerror Error CodeElectrical Interface Hardware InterfaceS16A I/O Interface SignalsSignal Table 4. S16A Interface SignalsSignal Connector PinoutThe S16A uses a 37-pin D connector, such as an AMP SignalRegisters Figure 1. S16A SBus Addresses SBus AddressesDMA Channel DMA RegistersCurrent DMA Address Registers Next DMA Address RegistersTable 8. Next DMA Address Registers Current Count RegistersControl and Next Count Registers DescriptionDIO Data Register Direct I/O RegistersDAC Output Control Register DIO Direction RegisterTable 11. DAC Output Control Register Analog Input Module Internal RegistersS16A DescriptionDescription Input Configuration RegistersInput Clock Prescale Registers Value hexTrim Register Trim RegistersDescription Table 14. Input Gain High Byte ValuesTrim Input Gain Registers Analog Input Module UART RegistersTemperature Register Analog Input Module Control ProtocolNumber of the Input Configuration register to be written. 2 is input Write to an Input Configuration RegisterRead from an Input Configuration Register Read a 16-bit value from a Input Configuration registerDnmm UART Command/Status RegisterTable 16. UART Command/Status Register Write to a Trim RegisterUART Data Register Xilinx Programming RegistersSoftware SpecificationsPower SBus ComplianceReferences cd /pub/s16a/4x Contacting EDTget README Index

s16a_read

address of buffer to read into

size

size of read in bytes

s16a_serial_read

S16A device struct, returned from s16a_open

Number of characters in the buffer