Bare metal GPIO driver for ESP32 | Toggling an LED

In this video, I write my own GPIO driver for the ESP32 microcontroller, instead of using the provided ESP-IDF headers. All memory addresses are pulled directly from the Technical Reference Manual.
[Technical Reference Manual]
www.espressif.com/sites/defau...
[Source Code]
github.com/JoshMarangoni/bare...

[@zaca211]

Holy crap that was simple. I just switched over the Espressif framework from Arduino and I've been messing around with their GPIO driver for a couple of hours now. Considering all I needed to do was toggle the internal LED, this saves so much hassle.

[@turboimport95]

Man this was dope, explanation was great. Most people just blow right over stuff like this like its nothing.

[@alexclarosfernandez8467]

Your videos are great!!!
Thanx a lot for your time and effort!!!

[@tjwatts100]

Very useful: thanks. Great for ULP programming where there's no other option.

[@snailcat69]

awesome work, appreciate that man

[@aslambasha539]

Can anyone give insight on how to read GPIO pin such as button and control LED foe ESP32.

[@skanderbelhaj2278]

man writing code like its native language

[@easyelectronics4364]

😂😂😂

[@fadieid5638]

Great stuff, arw you willing to continue the series? I am looking for a bate metal approach to the ESP32 instead of the typical arduino core use. What topics are you looking to cover?

[@Mankindux]

this is not bare metal as the dev uses esp-idf which incorporates bootloader, start linker script and so on. a bare metal approach would be to write a main, assembly file and use clang directly.

[@jakewasowski1353]

Thanks bro

[@PatrioticGestalt]

I tried reading the same document to see how you came about your awesome simplicity. What made you decide to avoid setting the GPIO_FUNCx_OUT_SEL register?

[@EV_engineer]

For simply toggling an LED, GPIO_OUT_W1TS_REG and GPIO_OUT_W1TC_REG are generally easier to set up and offer greater flexibility. But if you have a specific hardware event that you want to use to trigger the LED, and you want to minimize CPU overhead, then GPIO_FUNCx_OUT_SEL might be more appropriate.

[@matsvandamme1]

Nice video. Please note that GPIO_OUT_W1TS_REG and GPIO_OUT_W1TC_REG are exposed in soc/gpio_reg.h so a simple #include is sufficient, no need to define these registers inside your code. Please also note that GPIO pin numbers are exposed in hal/gpio_types.h. Same comment, no need to define GPIO5 macro again.

[@grenadier4702]

The next step is write your own linker script