Public functions of the GPIO PRAL driver. More...

Collaboration diagram for Public Functions:

Functions
volatile struct P33C_GPIO_INSTANCE_s *	p33c_GpioInstance_GetHandle (volatile uint16_t gpioInstance)
	Gets pointer to GPIO Instance SFR set. More...

volatile uint16_t	p33c_GpioInstance_Dispose (volatile uint16_t gpioInstance)
	Resets all GPIO Instance registers to their RESET default values. More...

volatile struct P33C_GPIO_INSTANCE_s	p33c_GpioInstance_ConfigRead (volatile uint16_t gpioInstance)
	Read the current configuration from the GPIO instance registers More...

volatile uint16_t	p33c_GpioInstance_ConfigWrite (volatile uint16_t gpioInstance, volatile struct P33C_GPIO_INSTANCE_s gpioConfig)
	Writes a user-defined configuration to the GPIO instance registers. More...

Detailed Description

Public functions of the GPIO PRAL driver.

This is the detailed description of public functions of the GPIO PRAL driver

Function Documentation

◆ p33c_GpioInstance_ConfigRead()

struct P33C_GPIO_INSTANCE_s p33c_GpioInstance_ConfigRead ( volatile uint16_t gpioInstance )

Read the current configuration from the GPIO instance registers

Parameters

gpioInstance Index of the selected GPIO Instance (1=Port A, 2=Port B, etc.)

Returns: 0 = failure, reading GPIO instance was not successful (returns NULL); n = success, reading GPIO instance was successful (returns 16-bit wide pointer)

This function reads all registers with their current configuration into a data structure of type P33C_GPIO_INSTANCE_s. Users can read and verify or modify the configuration to write it back to the GPIO instance
registers or copy configurations to other instances of the same type.

Definition at line 77 of file p33c_gpio.c.

◆ p33c_GpioInstance_ConfigWrite()

uint16_t p33c_GpioInstance_ConfigWrite	(	volatile uint16_t	gpioInstance,
		volatile struct P33C_GPIO_INSTANCE_s	gpioConfig
	)

Writes a user-defined configuration to the GPIO instance registers.

Parameters

gpioInstance	Index of the selected GPIO Instance (1=Port A, 2=Port B, etc.)
gpioConfig	GPIO peripheral instance SFR object of type struct P33C_GPIO_INSTANCE_s

Returns: 0 = failure, writing GPIO instance was not successful; 1 = success, writing GPIO instance was successful

This function writes a user-defined GPIO instance configuration of type P33C_GPIO_INSTANCE_s to the GPIO instance registers. The individual register configurations have to be set in user-code before calling this function. To simplify the configuration process of standard functions, this driver provides templates, which can be loaded and written directly.

Definition at line 133 of file p33c_gpio.c.

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◆ p33c_GpioInstance_Dispose()

uint16_t p33c_GpioInstance_Dispose ( volatile uint16_t gpioInstance )

Resets all GPIO Instance registers to their RESET default values.

Parameters

gpioInstance Index of the selected GPIO Instance (1=Port A, 2=Port B, etc.)

Returns: 0 = failure, disposing GPIO instance was not successful; 1 = success, disposing GPIO instance was successful

This function clears all GPIO Instance registers to their default values set when the device comes out of RESET.

Default configuration:

all outputs are set to logic functions
all analog functions are disabled
all pull-up and pull-down resistors are disabled
all GPIOs are operating in push-pull mode (open drain disabled)
all GPIOs are configured as input with their signal level HIGH

Definition at line 77 of file p33c_gpio.c.

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◆ p33c_GpioInstance_GetHandle()

struct P33C_GPIO_INSTANCE_s * p33c_GpioInstance_GetHandle ( volatile uint16_t gpioInstance )

Gets pointer to GPIO Instance SFR set.

Parameters

gpioInstance Index of the selected GPIO Instance (1=Port A, 2=Port B, etc.)

Returns: Pointer to GPIO instance object of type struct P33C_GPIO_INSTANCE_s of the selected GPIO instance

This function returns the pointer to a GPIO instance register set in Special Function Register memory space. This pointer can be used to directly write to/read from the Special Function Registers of a given peripheral instance.

Definition at line 45 of file p33c_gpio.c.

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