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ZestSC1 User Guide

CONFIDENTIAL Page 57 of 57

ZestSC1WaitForInterrupt

ZESTSC1_STATUS ZestSC1WaitForInterrupt(ZESTSC1_HANDLE Handle);

Parameters

Handle Handle of open ZestSC1 card. See ZestSC1OpenCard.

Return Value

ZESTSC1_SUCCESS Function succeeded

ZESTSC1_ILLEGAL_HANDLE Attempt to use illegal card handle

ZESTSC1_INTERNAL_ERROR An unspecified internal error occurred while

communicating with the driver

ZESTSC1_TIMEOUT Operation timed out

Description

ZestSC1WaitForInterrupt can be used to wait for the FPGA to interrupt the host.

Interrupts could be used to indicate the FPGA is ready for data or has completed an

operation or any other event that the host must wait for. The FPGA raises an interrupt

by asserting the User_Interrupt signal (see section 7.1.1.5).

For example:

ZESTSC1_HANDLE Handle;

/* Open a card with ID of 1 */

ZestSC1OpenCard(1, &Handle);

/* Configure the FPGA */

ZestSC1ConfigureFromFile(Handle, “example.bit”);

/* Wait for interrupt */

ZestSC1WaitForInterrupt(Handle);

/* Close the card */

ZestSC1CloseCard(Handle);

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Cypress Semiconductor NoBL CY7C1472V33 Guía de usuario Pagina 57