Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : General-Purpose Input Register - gpi

Description

Provides a low-latency, low-performance, and simple way to read general-purpose signals driven from the FPGA fabric.

Register Layout

Bits Access Reset Description
[31:0] R 0x0 Value

Field : Value - value

The value being driven from the FPGA fabric on f2s_gp[31:0]. If the FPGA is not in User Mode, the value of this field is undefined.

Field Access Macros:

#define ALT_FPGAMGR_GPI_VALUE_LSB   0
 
#define ALT_FPGAMGR_GPI_VALUE_MSB   31
 
#define ALT_FPGAMGR_GPI_VALUE_WIDTH   32
 
#define ALT_FPGAMGR_GPI_VALUE_SET_MSK   0xffffffff
 
#define ALT_FPGAMGR_GPI_VALUE_CLR_MSK   0x00000000
 
#define ALT_FPGAMGR_GPI_VALUE_RESET   0x0
 
#define ALT_FPGAMGR_GPI_VALUE_GET(value)   (((value) & 0xffffffff) >> 0)
 
#define ALT_FPGAMGR_GPI_VALUE_SET(value)   (((value) << 0) & 0xffffffff)
 

Data Structures

struct  ALT_FPGAMGR_GPI_s
 

Macros

#define ALT_FPGAMGR_GPI_RESET   0x00000000
 
#define ALT_FPGAMGR_GPI_OFST   0x14
 

Typedefs

typedef struct ALT_FPGAMGR_GPI_s ALT_FPGAMGR_GPI_t
 

Data Structure Documentation

struct ALT_FPGAMGR_GPI_s

WARNING: The C register and register group struct declarations are provided for convenience and illustrative purposes. They should, however, be used with caution as the C language standard provides no guarantees about the alignment or atomicity of device memory accesses. The recommended practice for writing hardware drivers is to use the SoCAL access macros and alt_read_word() and alt_write_word() functions.

The struct declaration for register ALT_FPGAMGR_GPI.

Data Fields
const uint32_t value: 32 Value

Macro Definitions

#define ALT_FPGAMGR_GPI_VALUE_LSB   0

The Least Significant Bit (LSB) position of the ALT_FPGAMGR_GPI_VALUE register field.

#define ALT_FPGAMGR_GPI_VALUE_MSB   31

The Most Significant Bit (MSB) position of the ALT_FPGAMGR_GPI_VALUE register field.

#define ALT_FPGAMGR_GPI_VALUE_WIDTH   32

The width in bits of the ALT_FPGAMGR_GPI_VALUE register field.

#define ALT_FPGAMGR_GPI_VALUE_SET_MSK   0xffffffff

The mask used to set the ALT_FPGAMGR_GPI_VALUE register field value.

#define ALT_FPGAMGR_GPI_VALUE_CLR_MSK   0x00000000

The mask used to clear the ALT_FPGAMGR_GPI_VALUE register field value.

#define ALT_FPGAMGR_GPI_VALUE_RESET   0x0

The reset value of the ALT_FPGAMGR_GPI_VALUE register field.

#define ALT_FPGAMGR_GPI_VALUE_GET (   value)    (((value) & 0xffffffff) >> 0)

Extracts the ALT_FPGAMGR_GPI_VALUE field value from a register.

#define ALT_FPGAMGR_GPI_VALUE_SET (   value)    (((value) << 0) & 0xffffffff)

Produces a ALT_FPGAMGR_GPI_VALUE register field value suitable for setting the register.

#define ALT_FPGAMGR_GPI_RESET   0x00000000

The reset value of the ALT_FPGAMGR_GPI register.

#define ALT_FPGAMGR_GPI_OFST   0x14

The byte offset of the ALT_FPGAMGR_GPI register from the beginning of the component.

Typedef Documentation

The typedef declaration for register ALT_FPGAMGR_GPI.