Altera DisplayPort MegaCore Function Manuel d'utilisateur Page 121

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Description: This function handles test automation requests from the connected DisplayPort
sink. You should invoke this function after the IP core senses an HPD IRQ and
identifies it as a test automation request. The function implements TEST_LINK_
TRAINING and TEST_EDID_READ.
Example: btc_dptx_test_autom();
btc_dptx_video_enable
Prototype: int btc_dptx_video_enable(BYTE enabled)
Thread-safe: No
Available from ISR: Yes
Include: < btc_dptx_syslib.h >
Return: 0 = success, 1 = fail
Parameters:
enabled—0 = output idle pattern; 1 = output active video
Description: This function enables the TX to output either active video or an idle pattern.
After successful link training, the TX outputs active video by default.
Example: btc_dptx_video_enable(1);
btc_dpxx_syslib Additional Types
In addition to the standard ANSI C defined types, btc_dpxx_syslib uses the following types:
#define BYTE unsigned char
btc_dprx_syslib Supported DPCD Locations
Sink-Supported DPCD Locations on page 10-33 provides a list of DPCD locations currently supported
in btc_dprx_syslib sink instantiations. Read accesses to unsupported locations receive a response of
NATIVE_ACK with data content set to zero. Write accesses to unsupported locations receive a response of
NATIVE_NACK.
8-20
btc_dptx_video_enable
UG-01131
2015.05.04
Altera Corporation
DisplayPort API Reference
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