Altera DisplayPort MegaCore Function - Manual (Page 115)

Return: • 0 = AUX_ACK replied
• 1 = Source internal error
• 2 = Reply timeout
• 3 = AUX_NACK replied
• 4 = AUX_DEFER replied
• 5 = Invalid reply
Parameters •
address
—DPCD start address
•
size—
Number of bytes (1 - 16)
•
data
—Pointer for data to be read
Description: This function reads 1 to 16 data bytes from the connected DisplayPort sink’s DPCD.
Example:
btc_dptx_aux_read(0×202, 2, &status);
Related Information
btc_dptx_aux_write on page 8-14
btc_dptx_aux_write
Prototype:
int btc_dptx_aux_write(
unsigned int address,
BYTE size,
BYTE *data)
Thread-safe: No
Available from ISR: Yes
Include:
< btc_dptx_syslib.h >
Return: • 0 = AUX_ACK replied
• 1 = Source internal error
• 2 = Reply timeout
• 3 = AUX_NACK replied
• 4 = AUX_DEFER replied
• 5 = Invalid reply
Parameters •
address
—DPCD start address
•
size—
Number of bytes (1 - 16)
•
data—
Pointer to data to be written
Description: This function writes 1 to 16 data bytes to the connected DisplayPort sink’s DPCD.
Example:
btc_dptx_aux_write(0×600, 1, data_ptr);
8-14 btc_dptx_aux_write
UG-01131
2015.05.04
Altera Corporation DisplayPort API Reference
Send Feedback