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Sun Microsystems S16A s16astopbuffers, s16awaitforbuffer, Description, Syntax, Arguments, s16ap

Models: S16A

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Input and Output

S16A User’s Guide

s16a_stop_buffers

Description

Stops DMA transfer after the current buffer has completed, whether DMA is occurring continuously or noncontinuously. If DMA is continuous, also dismantles ring buffer mode and frees the resources it consumed.

Syntax

int s16a_stop_buffers(S16aDev *s16a_p);

Arguments

s16a_p

S16A device handle returned from s16a_open

Return

0 on success; –1 on error. If an error occurs, check the errno global variable for the error number.

s16a_wait_for_buffer

Description

Blocks until the specified buffer is returned from the driver.

Syntax

void *s16a_wait_buffers(S16aDev *s16a_p, int bufnum);

Arguments
s16a_p	S16A device handle returned from s16a_open
bufnum	buffer number for which to block. Completed buffers are numbered cumulatively starting
	with 0 when the S16A is opened. (Thus, the allocated buffer number is the transferred
	buffer number modulo the number of allocated buffers.)

NOTE: If you wait for all the buffers, the driver is left with none to use when this call returns, and an overrun or underrun will occur.

Return

Address of last completed buffer on success; NULL on error. If an error occurs, check the errno global variable for more information.

20	EDT, Inc. October, 1996

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Sun Microsystems S16A manual s16astopbuffers, s16awaitforbuffer, Description, Syntax, Arguments, s16ap, Return, bufnum

Contents

S16A USER’S GUIDES16A User’s Guide Contents Tables Overview InstallationSpecifications Input and OutputInstallation Installing the HardwareInstalling the Software Using SunOS Version4. Place the diskette that came with the S16A into the diskette drive Using System V Release 4 Solaris 2.4 or Later Building the Sample Programsmake unload volcheck pkgadd -d /floppy/floppy0 EDTs16aIncluded Files Input and Output Elements of S16A ApplicationsDMA Library Routines RoutineDescription Table 1. General DMA Library Routiness16abufferaddresses RoutineDescription Table 2. S16A-specific Library Routiness16acancel s16acancelcurrents16achecknextbuffer Descriptions16aclose DescriptionSyntax int s16acloseS16aDev *s16aps16aconfigureringbuffers DescriptionSyntax Argumentss16adone s16agetdaccontrolregDescription Syntaxs16agetdiodatareg s16agetdiodirectionregDescription Syntaxs16agetoutputbits s16aopenDescription Syntaxs16aread s16aserialreadDescription Syntaxs16aserialstr s16aserialwriteNull-terminated command string to send to the Analog Input Module Number of characters in the command strings16asetdefaults s16asetdaccontrolregDescription Syntaxs16asetdiodatareg s16asetdiodirectionregDescription Syntaxs16asetoutputbits s16astartbuffersDescription Syntaxs16astopbuffers s16awaitforbufferDescription Syntaxs16awaitfornextbuffer s16awriteDescription SyntaxError Conditions foiparityerrorError Code Error ConditionHardware Interface Electrical InterfaceInterface Signals SignalTable 4. S16A Interface Signals S16A I/OConnector Pinout The S16A uses a 37-pin D connector, such as an AMPSignal SignalRegisters SBus Addresses Figure 1. S16A SBus AddressesDMA Registers Current DMA Address RegistersNext DMA Address Registers DMA ChannelCurrent Count Registers Control and Next Count RegistersDescription Table 8. Next DMA Address RegistersDirect I/O Registers DAC Output Control RegisterDIO Direction Register DIO Data RegisterAnalog Input Module Internal Registers S16ADescription Table 11. DAC Output Control RegisterInput Configuration Registers Input Clock Prescale RegistersValue hex DescriptionTrim Registers DescriptionTable 14. Input Gain High Byte Values Trim RegisterAnalog Input Module UART Registers Temperature RegisterAnalog Input Module Control Protocol Trim Input Gain RegistersWrite to an Input Configuration Register Read from an Input Configuration RegisterRead a 16-bit value from a Input Configuration register Number of the Input Configuration register to be written. 2 is inputUART Command/Status Register Table 16. UART Command/Status RegisterWrite to a Trim Register DnmmXilinx Programming Registers UART Data RegisterSpecifications PowerSBus Compliance SoftwareReferences Contacting EDT cd /pub/s16a/4xget README Index