Type Definition rpi_pico_sdk_sys::gpio_irq_level

type gpio_irq_level = c_uint;

\brief GPIO Interrupt level definitions \ingroup hardware_gpio \brief GPIO Interrupt levels

An interrupt can be generated for every GPIO pin in 4 scenarios:

• Level High: the GPIO pin is a logical 1
• Level Low: the GPIO pin is a logical 0
• Edge High: the GPIO has transitioned from a logical 0 to a logical 1
• Edge Low: the GPIO has transitioned from a logical 1 to a logical 0

The level interrupts are not latched. This means that if the pin is a logical 1 and the level high interrupt is active, it will become inactive as soon as the pin changes to a logical 0. The edge interrupts are stored in the INTR register and can be cleared by writing to the INTR register.