The MCUXpresso SDK provides Peripheral driver for the General Purpose I/O (GPIO) module of MCUXpresso SDK devices.
Function groups
Initialization and deinitialization
The function GPIO_PinInit() initializes the GPIO with specified configuration.
Pin manipulation
The function GPIO_WritePinOutput() set output state of selected GPIO pin. The function GPIO_ReadPinInput() read input value of selected GPIO pin.
Port manipulation
The function GPIO_SetPinsOutput() sets the output level of selected GPIO pins to the logic 1. The function GPIO_ClearPinsOutput() sets the output level of selected GPIO pins to the logic 1. The function GPIO_TogglePinsOutput() reverse the output level of selected GPIO pins. The function GPIO_ReadPinsInput() read input value of selected port.
Port masking
The function GPIO_SetPortMask() set port mask, only pins masked by 0 will be enabled in following functions. The function GPIO_WriteMPort() sets the state of selected GPIO port, only pins masked by 0 will be affected. The function GPIO_ReadMPort() reads the state of selected GPIO port, only pins masked by 0 are enabled for read, pins masked by 1 are read as 0.
Typical use case
Example use of GPIO API. Refer to the driver examples codes located at <SDK_ROOT>/boards/<BOARD>/driver_examples/gpio
|
static void | GPIO_PortSet (GPIO_Type *base, uint32_t port, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 1. More...
|
|
static void | GPIO_SetPinsOutput (GPIO_Type *base, uint32_t port, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 1. More...
|
|
static void | GPIO_PortClear (GPIO_Type *base, uint32_t port, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 0. More...
|
|
static void | GPIO_ClearPinsOutput (GPIO_Type *base, uint32_t port, uint32_t mask) |
| Sets the output level of the multiple GPIO pins to the logic 0. More...
|
|
static void | GPIO_PortToggle (GPIO_Type *base, uint32_t port, uint32_t mask) |
| Reverses current output logic of the multiple GPIO pins. More...
|
|
static void | GPIO_TogglePinsOutput (GPIO_Type *base, uint32_t port, uint32_t mask) |
| Reverses current output logic of the multiple GPIO pins. More...
|
|
|
static void | GPIO_PinWrite (GPIO_Type *base, uint32_t port, uint32_t pin, uint8_t output) |
| Sets the output level of the one GPIO pin to the logic 1 or 0. More...
|
|
static void | GPIO_WritePinOutput (GPIO_Type *base, uint32_t port, uint32_t pin, uint8_t output) |
| Sets the output level of the one GPIO pin to the logic 1 or 0. More...
|
|
|
static uint32_t | GPIO_PinRead (GPIO_Type *base, uint32_t port, uint32_t pin) |
| Reads the current input value of the GPIO PIN. More...
|
|
static uint32_t | GPIO_ReadPinInput (GPIO_Type *base, uint32_t port, uint32_t pin) |
| Reads the current input value of the GPIO PIN. More...
|
|
Every pin can only be configured as either output pin or input pin at a time. If configured as a input pin, then leave the outputConfig unused.
Enumerator |
---|
kGPIO_DigitalInput |
Set current pin as digital input.
|
kGPIO_DigitalOutput |
Set current pin as digital output.
|
void GPIO_PortInit |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port |
|
) |
| |
This function ungates the GPIO clock.
- Parameters
-
base | GPIO peripheral base pointer. |
port | GPIO port number. |
static void GPIO_Init |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port |
|
) |
| |
|
inlinestatic |
void GPIO_PinInit |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
pin, |
|
|
const gpio_pin_config_t * |
config |
|
) |
| |
To initialize the GPIO, define a pin configuration, either input or output, in the user file. Then, call the GPIO_PinInit() function.
This is an example to define an input pin or output pin configuration:
*
* {
* 0,
* }
*
* {
* 0,
* }
*
- Parameters
-
base | GPIO peripheral base pointer(Typically GPIO) |
port | GPIO port number |
pin | GPIO pin number |
config | GPIO pin configuration pointer |
static void GPIO_PinWrite |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
pin, |
|
|
uint8_t |
output |
|
) |
| |
|
inlinestatic |
- Parameters
-
base | GPIO peripheral base pointer(Typically GPIO) |
port | GPIO port number |
pin | GPIO pin number |
output | GPIO pin output logic level.
- 0: corresponding pin output low-logic level.
- 1: corresponding pin output high-logic level.
|
static void GPIO_WritePinOutput |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
pin, |
|
|
uint8_t |
output |
|
) |
| |
|
inlinestatic |
static uint32_t GPIO_PinRead |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
pin |
|
) |
| |
|
inlinestatic |
- Parameters
-
base | GPIO peripheral base pointer(Typically GPIO) |
port | GPIO port number |
pin | GPIO pin number |
- Return values
-
GPIO | port input value
- 0: corresponding pin input low-logic level.
- 1: corresponding pin input high-logic level.
|
static uint32_t GPIO_ReadPinInput |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
pin |
|
) |
| |
|
inlinestatic |
static void GPIO_PortSet |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
mask |
|
) |
| |
|
inlinestatic |
- Parameters
-
base | GPIO peripheral base pointer(Typically GPIO) |
port | GPIO port number |
mask | GPIO pin number macro |
static void GPIO_SetPinsOutput |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
mask |
|
) |
| |
|
inlinestatic |
static void GPIO_PortClear |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
mask |
|
) |
| |
|
inlinestatic |
- Parameters
-
base | GPIO peripheral base pointer(Typically GPIO) |
port | GPIO port number |
mask | GPIO pin number macro |
static void GPIO_ClearPinsOutput |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
mask |
|
) |
| |
|
inlinestatic |
static void GPIO_PortToggle |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
mask |
|
) |
| |
|
inlinestatic |
- Parameters
-
base | GPIO peripheral base pointer(Typically GPIO) |
port | GPIO port number |
mask | GPIO pin number macro |
static void GPIO_TogglePinsOutput |
( |
GPIO_Type * |
base, |
|
|
uint32_t |
port, |
|
|
uint32_t |
mask |
|
) |
| |
|
inlinestatic |