Altera Embedded Peripherals IP - Manual (Page 171)

Include: <altera_avalon_fifo_regs.h>, <altera_avalon_fifo_utils.h>
Parameters:
address
—the base address of the FIFO control slave
data
—the value for the almost empty threshold level
Returns: Returns 0 (
ALTERA_AVALON_FIFO_OK
) if successful,
ALTERA_AVALON_FIFO_
THRESHOLD_WRITE_ERROR
if unsuccessful.
Description: Writes
data
to the
almostempty
register.
altera_avalon_write_fifo()
Prototype:
int altera_avalon_write_fifo(alt_u32 write_address, alt_u32 ctrl_
address, alt_u32 data)
Thread-safe: No.
Available
from ISR:
No.
Include: <altera_avalon_fifo_regs.h>, <altera_avalon_fifo_utils.h>
Parameters:
write_address
—the base address of the FIFO write slave
ctrl_address
—the base address of the FIFO control slave
data
—the value to write to address offset 0 for Avalon-MM to Avalon-ST
transfers, the value to write to the single address available for Avalon-MM to
Avalon-MM transfers. See the Avalon Interface Specifications section for the
data ordering.
Returns: Returns 0 (
ALTERA_AVALON_FIFO_OK
) if successful,
ALTERA_AVALON_FIFO_FULL
if unsuccessful.
Description: Writes
data
to the specified address if the FIFO is not full.
altera_avalon_write_other_info()
Prototype:
int altera_avalon_write_other_info(alt_u32 write_address, alt_u32
ctrl_address, alt_u32 data)
Thread-safe: No.
Available
from ISR:
No.
Include: <altera_avalon_fifo_regs.h>, <altera_avalon_fifo_utils.h>
Parameters:
write_address
—the base address of the FIFO write slave
ctrl_address
—the base address of the FIFO control slave
data
—the packet status information to write to address offset 1 of the Avalon
interface. See the Avalon Interface Specifications section for the ordering of the
packet status information.
16-16 altera_avalon_write_fifo()
UG-01085
2014.24.07
Altera Corporation On-Chip FIFO Memory Core
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