Altera DisplayPort MegaCore Function - Manual (Page 113)

btc_dptx_syslib API Reference
This section provides information about the DisplayPort source system library functions
(
btc_dptx_syslib
), including:
• C prototype
• Function description
• Whether the function is thread-safe when running in a multi- threaded environment
• Whether the function can be invoked from an ISR
• Example
btc_dptx_aux_i2c_read
Prototype:
int btc_dptx_aux_i2c_read(
BYTE address,
BYTE size,
BYTE *data,
BYTE mot)
Thread-safe: No
Available from ISR: Yes
Include:
< btc_dptx_syslib.h >
Return: 0 = success, 1 = fail
Parameters: •
address—
I 2 C address
•
size—
Number of bytes (1 - 16)
•
data
—Pointer to data to be read
•
mot
—Middle of transaction (0 or 1)
Description: This function reads 1 to 16 data bytes from the connected DisplayPort sink’s I 2 C
interface mapped over the AUX channel.
Example:
btc_dptx_aux_i2c_read(0×50, 16, data, 1);
Related Information
btc_dptx_aux_i2c_write on page 8-13
8-12 btc_dptx_syslib API Reference
UG-01131
2015.05.04
Altera Corporation DisplayPort API Reference
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