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Altera SoCAL
16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Debounces each IO Pin
Register Layout
Bits | Access | Reset | Description |
---|---|---|---|
[28:0] | RW | 0x0 | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE |
[31:29] | ??? | 0x0 | UNDEFINED |
Field : gpio_debounce | ||||||||||
Controls whether an external signal that is the source of an interrupt needs to be debounced to remove any spurious glitches. A signal must be valid for two periods of an external clock (gpio_db_clk) before it is internally processed. Field Enumeration Values:
Field Access Macros: | ||||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_E_DIS 0x0 | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_E_EN 0x1 | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_LSB 0 | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_MSB 28 | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_WIDTH 29 | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_SET_MSK 0x1fffffff | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_CLR_MSK 0xe0000000 | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_RESET 0x0 | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_GET(value) (((value) & 0x1fffffff) >> 0) | |||||||||
#define | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_SET(value) (((value) << 0) & 0x1fffffff) | |||||||||
Data Structures | |
struct | ALT_GPIO_DEBOUNCE_s |
Macros | |
#define | ALT_GPIO_DEBOUNCE_OFST 0x48 |
#define | ALT_GPIO_DEBOUNCE_ADDR(base) ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_GPIO_DEBOUNCE_OFST)) |
Typedefs | |
typedef struct ALT_GPIO_DEBOUNCE_s | ALT_GPIO_DEBOUNCE_t |
struct ALT_GPIO_DEBOUNCE_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_GPIO_DEBOUNCE.
Data Fields | ||
---|---|---|
uint32_t | gpio_debounce: 29 | ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE |
uint32_t | __pad0__: 3 | UNDEFINED |
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_E_DIS 0x0 |
Enumerated value for register field ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE
No debounce
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_E_EN 0x1 |
Enumerated value for register field ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE
Enable debounce
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_LSB 0 |
The Least Significant Bit (LSB) position of the ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE register field.
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_MSB 28 |
The Most Significant Bit (MSB) position of the ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE register field.
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_WIDTH 29 |
The width in bits of the ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE register field.
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_SET_MSK 0x1fffffff |
The mask used to set the ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE register field value.
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_CLR_MSK 0xe0000000 |
The mask used to clear the ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE register field value.
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_RESET 0x0 |
The reset value of the ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE register field.
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_GET | ( | value | ) | (((value) & 0x1fffffff) >> 0) |
Extracts the ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE field value from a register.
#define ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE_SET | ( | value | ) | (((value) << 0) & 0x1fffffff) |
Produces a ALT_GPIO_DEBOUNCE_GPIO_DEBOUNCE register field value suitable for setting the register.
#define ALT_GPIO_DEBOUNCE_OFST 0x48 |
The byte offset of the ALT_GPIO_DEBOUNCE register from the beginning of the component.
#define ALT_GPIO_DEBOUNCE_ADDR | ( | base | ) | ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_GPIO_DEBOUNCE_OFST)) |
The address of the ALT_GPIO_DEBOUNCE register.
typedef struct ALT_GPIO_DEBOUNCE_s ALT_GPIO_DEBOUNCE_t |
The typedef declaration for register ALT_GPIO_DEBOUNCE.