DisplayPort Intel® FPGA IP User Guide

ID 683273
Date 10/20/2022
Public

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Document Table of Contents

9.70. btc_dptxll_hpd_change

Prototype:

int btc_dptxll_hpd_change(
BYTE tx_idx,
unsigned int asserted)

Thread-safe:

No

Available from ISR:

Yes

Include:

< btc_dptxll_syslib.h >

Return:

0 = success, 1 = fail

Parameters:

  • tx_idx—Source instance index (0 - 3)
  • asserted—0 = HPD is now deasserted, 1 = HPD is now asserted

Description:

This function handles an HPD stable status change (not HPD_IRQ) and must be invoked after every HPD stable logical status change.

Example:

btc_dptxll_hpd_change(0,1);