The MCUXpresso SDK provides a peripheral driver for the General-Purpose Input/Output (GPIO) module of MCUXpresso SDK devices.
Typical use case
Input Operation
Refer to the driver examples codes located at <SDK_ROOT>/boards/<BOARD>/driver_examples/gpio
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void | GPIO_PinWrite (GPIO_Type *base, uint32_t pin, uint8_t output) |
| Sets the output level of the individual GPIO pin to logic 1 or 0. More...
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static void | GPIO_WritePinOutput (GPIO_Type *base, uint32_t pin, uint8_t output) |
| Sets the output level of the individual GPIO pin to logic 1 or 0. More...
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static void | GPIO_PortSet (GPIO_Type *base, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 1. More...
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static void | GPIO_SetPinsOutput (GPIO_Type *base, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 1. More...
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static void | GPIO_PortClear (GPIO_Type *base, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 0. More...
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static void | GPIO_ClearPinsOutput (GPIO_Type *base, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 0. More...
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static void | GPIO_PortToggle (GPIO_Type *base, uint32_t mask) |
| Reverses the current output logic of the multiple GPIO pins. More...
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static uint32_t | GPIO_PinRead (GPIO_Type *base, uint32_t pin) |
| Reads the current input value of the GPIO port. More...
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static uint32_t | GPIO_ReadPinInput (GPIO_Type *base, uint32_t pin) |
| Reads the current input value of the GPIO port. More...
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void | GPIO_PinSetInterruptConfig (GPIO_Type *base, uint32_t pin, gpio_interrupt_mode_t pinInterruptMode) |
| Sets the current pin interrupt mode. More...
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static void | GPIO_SetPinInterruptConfig (GPIO_Type *base, uint32_t pin, gpio_interrupt_mode_t pinInterruptMode) |
| Sets the current pin interrupt mode. More...
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static void | GPIO_PortEnableInterrupts (GPIO_Type *base, uint32_t mask) |
| Enables the specific pin interrupt. More...
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static void | GPIO_EnableInterrupts (GPIO_Type *base, uint32_t mask) |
| Enables the specific pin interrupt. More...
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static void | GPIO_PortDisableInterrupts (GPIO_Type *base, uint32_t mask) |
| Disables the specific pin interrupt. More...
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static void | GPIO_DisableInterrupts (GPIO_Type *base, uint32_t mask) |
| Disables the specific pin interrupt. More...
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static uint32_t | GPIO_PortGetInterruptFlags (GPIO_Type *base) |
| Reads individual pin interrupt status. More...
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static uint32_t | GPIO_GetPinsInterruptFlags (GPIO_Type *base) |
| Reads individual pin interrupt status. More...
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static void | GPIO_PortClearInterruptFlags (GPIO_Type *base, uint32_t mask) |
| Clears pin interrupt flag. More...
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static void | GPIO_ClearPinsInterruptFlags (GPIO_Type *base, uint32_t mask) |
| Clears pin interrupt flag. More...
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Enumerator |
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kGPIO_DigitalInput |
Set current pin as digital input.
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kGPIO_DigitalOutput |
Set current pin as digital output.
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Enumerator |
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kGPIO_NoIntmode |
Set current pin general IO functionality.
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kGPIO_IntLowLevel |
Set current pin interrupt is low-level sensitive.
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kGPIO_IntHighLevel |
Set current pin interrupt is high-level sensitive.
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kGPIO_IntRisingEdge |
Set current pin interrupt is rising-edge sensitive.
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kGPIO_IntFallingEdge |
Set current pin interrupt is falling-edge sensitive.
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kGPIO_IntRisingOrFallingEdge |
Enable the edge select bit to override the ICR register's configuration.
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void GPIO_PinInit |
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GPIO_Type * |
base, |
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uint32_t |
pin, |
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const gpio_pin_config_t * |
Config |
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- Parameters
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base | GPIO base pointer. |
pin | Specifies the pin number |
initConfig | pointer to a gpio_pin_config_t structure that contains the configuration information. |
void GPIO_PinWrite |
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GPIO_Type * |
base, |
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uint32_t |
pin, |
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uint8_t |
output |
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) |
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- Parameters
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base | GPIO base pointer. |
pin | GPIO port pin number. |
output | GPIOpin output logic level.
- 0: corresponding pin output low-logic level.
- 1: corresponding pin output high-logic level.
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static void GPIO_WritePinOutput |
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GPIO_Type * |
base, |
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uint32_t |
pin, |
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uint8_t |
output |
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) |
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inlinestatic |
static void GPIO_PortSet |
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GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
- Parameters
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base | GPIO peripheral base pointer (GPIO1, GPIO2, GPIO3, and so on.) |
mask | GPIO pin number macro |
static void GPIO_SetPinsOutput |
( |
GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
static void GPIO_PortClear |
( |
GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
- Parameters
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base | GPIO peripheral base pointer (GPIO1, GPIO2, GPIO3, and so on.) |
mask | GPIO pin number macro |
static void GPIO_ClearPinsOutput |
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GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
static void GPIO_PortToggle |
( |
GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
- Parameters
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base | GPIO peripheral base pointer (GPIO1, GPIO2, GPIO3, and so on.) |
mask | GPIO pin number macro |
static uint32_t GPIO_PinRead |
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GPIO_Type * |
base, |
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uint32_t |
pin |
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) |
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inlinestatic |
- Parameters
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base | GPIO base pointer. |
pin | GPIO port pin number. |
- Return values
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static uint32_t GPIO_ReadPinInput |
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GPIO_Type * |
base, |
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uint32_t |
pin |
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) |
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inlinestatic |
static uint8_t GPIO_PinReadPadStatus |
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GPIO_Type * |
base, |
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uint32_t |
pin |
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) |
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inlinestatic |
- Parameters
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base | GPIO base pointer. |
pin | GPIO port pin number. |
- Return values
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GPIO | pin pad status value. |
static uint8_t GPIO_ReadPadStatus |
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GPIO_Type * |
base, |
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uint32_t |
pin |
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) |
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inlinestatic |
void GPIO_PinSetInterruptConfig |
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GPIO_Type * |
base, |
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uint32_t |
pin, |
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gpio_interrupt_mode_t |
pinInterruptMode |
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) |
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- Parameters
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base | GPIO base pointer. |
pin | GPIO port pin number. |
pininterruptMode | pointer to a gpio_interrupt_mode_t structure that contains the interrupt mode information. |
static void GPIO_SetPinInterruptConfig |
( |
GPIO_Type * |
base, |
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uint32_t |
pin, |
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gpio_interrupt_mode_t |
pinInterruptMode |
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) |
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inlinestatic |
static void GPIO_PortEnableInterrupts |
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GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
- Parameters
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base | GPIO base pointer. |
mask | GPIO pin number macro. |
static void GPIO_EnableInterrupts |
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GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
- Parameters
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base | GPIO base pointer. |
mask | GPIO pin number macro. |
static void GPIO_PortDisableInterrupts |
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GPIO_Type * |
base, |
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uint32_t |
mask |
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inlinestatic |
- Parameters
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base | GPIO base pointer. |
mask | GPIO pin number macro. |
static void GPIO_DisableInterrupts |
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GPIO_Type * |
base, |
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uint32_t |
mask |
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inlinestatic |
static uint32_t GPIO_PortGetInterruptFlags |
( |
GPIO_Type * |
base | ) |
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inlinestatic |
- Parameters
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- Return values
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current | pin interrupt status flag. |
static uint32_t GPIO_GetPinsInterruptFlags |
( |
GPIO_Type * |
base | ) |
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inlinestatic |
- Parameters
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- Return values
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current | pin interrupt status flag. |
static void GPIO_PortClearInterruptFlags |
( |
GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
Status flags are cleared by writing a 1 to the corresponding bit position.
- Parameters
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base | GPIO base pointer. |
mask | GPIO pin number macro. |
static void GPIO_ClearPinsInterruptFlags |
( |
GPIO_Type * |
base, |
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uint32_t |
mask |
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) |
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inlinestatic |
Status flags are cleared by writing a 1 to the corresponding bit position.
- Parameters
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base | GPIO base pointer. |
mask | GPIO pin number macro. |