GPIO Wake Interrupt Sample

GPIO Wake Interrupt Sample #

Overview #

GPIO interrupt and wake-up are two important features in embedded systems. GPIO interrupt allows a microcontroller to respond to a change in the state of a GPIO pin without continuously checking it, reducing power consumption. Wake-up allows a sleeping microcontroller to quickly respond to an external event, such as a GPIO pin change, without consuming continuous power. When used together, these features improve power efficiency in applications such as battery-powered devices and IoT.

Hardware Requirements #

HardwareProject NameProject Path
IN628E DKproj_drv_gpio_wuk_interruptin-dev/proj/driver/proj_drv_gpio_wuk_interrupt

Configuration #

#define PORT 2
#define PIN 3

Define the port and pin for testing GPIO wake-up and interrupts.

Building #

To build the sample with keil, follow the steps listed on the quick start page in the IN6xxE of Inplay Doc. You may be able to solve questions on that webpage.

Debug #

We can get the status of gpio according to Uart Log. The following are samples,

  • gpio interrupt occur interrupt occur

  • Wake up power up src=

  • Power down power down

More information may be found in debug guide page.

Test Steps #

  1. Open Keil and select the GPIO wake-up and interrupt pin. Download the proj_drv_gpio_wuk_interrupt project.
  2. Press the reset button and observe the log for the text CHIP ID =.
  3. Toggle the light on and off. When the corresponding edge signal is detected on the GPIO input pin, power up src=andinterrupt occur will be printed.