Arduino Mbed OS RP2040 High Speed GPIO

[kcchang61]

Hello,

I'm using Raspberry Pi Pico with Arduino Mbed OS environment.
My problem is the general GPIO access time is too slow and so I'm looking for fast method but I can't find yet like as Arduino Platform method.

From
while (1) {
digitalWrite(3, 1);
digitalWrite(3, 0);
}

To
cli();
while (1) {
PORTD |= 0x8;
PORTD &= ~0x8;
}

Is there any method for Pi Pico?

[sterretje]

Welcome @kcchang61,

your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advice on) your project See About the Installation & Troubleshooting category.

[Koepel]

Welcome to the forum.

What is slow and what is fast and why you need to make it faster ? We like to know the actual numbers. How many nanoseconds should it be and what is it for ? Can you also give a broader view and tell what your project is about ?

On this forum are sometimes questions about a solution without telling what it is for. That is sometimes a XY problem: https://xyproblem.info/ Therefor we like to know everything.

The ATmega microcontrollers are highly optimized for fast changing of pins. The Raspberry Pi Pico is a processor, meant for doing processor things.

[westfw]

You should be able to access the pico sdk functions like gpio_set_mask()
Like the AVRs, you need to read beyond the arduino docs.

[kcchang61]

Thanks for your comment! The gpio_set_mask(0) method was ultra faster than digitalWrite() function.