I'm going to set up a GPIO interrupt to detect when a button is pressed.
I was looking at the C SDK documentation, and it describes the scenarios for which an interrupt can be generated:
Doesn't it seem like the labels "fall" and "rise" are reversed?
I ask because the only example I've found so far uses both "fall" and "rise" together. Thought I'd ask before playing with it.
I was looking at the C SDK documentation, and it describes the scenarios for which an interrupt can be generated:
That makes sense to me. However, the names of the corresponding `enum` values are a little different:• 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
Code:
enum gpio_irq_level { GPIO_IRQ_LEVEL_LOW = 0x1u, ///< IRQ when the GPIO pin is a logical 1 GPIO_IRQ_LEVEL_HIGH = 0x2u, ///< IRQ when the GPIO pin is a logical 0 GPIO_IRQ_EDGE_FALL = 0x4u, ///< IRQ when the GPIO has transitioned from a logical 0 to a logical 1 GPIO_IRQ_EDGE_RISE = 0x8u, ///< IRQ when the GPIO has transitioned from a logical 1 to a logical 0};
I ask because the only example I've found so far uses both "fall" and "rise" together. Thought I'd ask before playing with it.
Statistics: Posted by MathMonkeyMan — Wed Sep 11, 2024 3:41 pm — Replies 0 — Views 38