Search found 2 matches

by pastaclub
Tue Dec 26, 2023 2:51 pm
Forum: ESP-IDF
Topic: React to GPIO fast: ISR or queue?
Replies: 1
Views: 865

React to GPIO fast: ISR or queue?

I need to detect a falling edge on a GPIO input, then change the same GPIO into an output and drive it high. This needs to happen within 0.1ms. How can I ensure a fast reaction time? Most interrupt examples use a queue, but I am worried that this will introduce too much latency. Is there any problem...
by pastaclub
Mon Mar 30, 2020 5:48 pm
Forum: General Discussion
Topic: Fast 16-bit parallel output?
Replies: 2
Views: 4371

Fast 16-bit parallel output?

I need to output a stream of 16-bit words fast to an 8080 bus. It's not an option to set single GPIO pins seperately; I want to write 16 bits in one operation if possible. How do I do that? I read about the register GPIO_OUT_REG, which supposedly corresponds to GPIO 0..31. How do I write 16-bits usi...