VIO API

Virtual Input/Output (VIO) API. More...

Data Structures
struct	ARM_VIO_Type
	Structure type to access the virtual input/output. More...
struct	ARM_VIO_Type.SignalOut
	Signal Output. More...
struct	ARM_VIO_Type.SignalIn
	Signal Input. More...

Macros
#define	ARM_VIO_BASE   (0x4FEF0000UL)
#define	ARM_VIO   ((ARM_VIO_Type *)ARM_VIO_BASE)

Description

Virtual Input/Output (VIO) API.

The VIO peripheral is accessed using the ARM_VIO_Type structure that defines registers for the following components:

• Signal output, for example for LED simulation
• Signal input, for example for buttons
• Value registers for digital sensors and controls

One VIO peripheral instance is mapped into the memory of a Cortex-M system, for example:

/* Memory mapping of VIO peripheral */
#define ARM_VIO_BASE            (0x4FEF0000UL)                          /*!< VIO Base Address */
#define ARM_VIO                 ((ARM_VIO_Type *)ARM_VIO_BASE)          /*!< VIO struct */

The ARM_VIO_Type structure is defined in arm_vio.h file as follows:

/// Structure type to access the virtual input/output.
typedef struct
{
  /// Signal Output
  struct {
    __IOM uint32_t mask;        /*!< (R/W) Bit Mask */
    __OM  uint32_t signal;      /*!< (-/W) Signal Value */
  } SignalOut;
 
  /// Signal Input
  struct {
    __IOM uint32_t mask;        /*!< (R/W) Bit Mask */
    __IM  uint32_t signal;      /*!< (R/-) Signal Value */
  } SignalIn;
 
  __IOM int32_t Value[64];      /*!< (R/W) Value (32-bit) */
 
} ARM_VIO_Type;

---

Data Structure Documentation

ARM_VIO_Type

struct ARM_VIO_Type

Structure type to access the virtual input/output.

The ARM_VIO_Type structure provides access to the VIO peripheral registers.

Data Fields
struct ARM_VIO_Type.SignalOut	SignalOut	Signal Output. Structure for output signal.
struct ARM_VIO_Type.SignalIn	SignalIn	Signal Input. Structure for input signal.
__IOM int32_t	Value[64]	(R/W) Value (32-bit) Index array for digital I/O values.

ARM_VIO_Type.SignalOut

struct ARM_VIO_Type.SignalOut

Signal Output.

Data Fields
__IOM uint32_t	mask	(R/W) Bit Mask
__OM uint32_t	signal	(-/W) Signal Value

ARM_VIO_Type.SignalIn

struct ARM_VIO_Type.SignalIn

Signal Input.

Data Fields
__IOM uint32_t	mask	(R/W) Bit Mask
__IM uint32_t	signal	(R/-) Signal Value

Macro Definition Documentation

ARM_VIO_BASE

#define ARM_VIO_BASE   (0x4FEF0000UL)

VIO Base Address

ARM_VIO

#define ARM_VIO   ((ARM_VIO_Type *)ARM_VIO_BASE)

VIO struct