[Grbl_Esp32 Issue#413] Suggest to consider the new ESP32-S2 module About GRBL HAL

Issue #413 | 状态: 已关闭 | 作者: ningzhang-github | 创建时间: 2020-05-26

Hello guys,

Greatings from China!
At work I am an vehicle SW test automation engineer, in my spare time I am a fan of CNC, GRBL, and ESP32 MCU applications such as Onstep(a telescope controller). When I were wondering around github I found this awsome project, which combined all the things I like to have. Outstanding job @bdring !

Back to the topic, Espressif the maker of ESP 8266/32 MCUs has released the new ESP32-S2 serial to market, it has 43 available GPIOs, more than the 34 pins(correct me if im wrong) of current ESP32. This should be greatly helpful for our Grbl_ESP32 project. Its small devkit is already available in the China domestic aliexpress store(Taobao), priced in ~7USD/pcs, should be also available in international Aliexpress.

Brief intro of ESP32-S2: https://www.espressif.com/en/news/espressif-announces-%E2%80%A8esp32-s2-secure-wi-fi-mcu

Info of its devkit: https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/hw-reference/esp32s2/user-guide-saola-1-v1.2.html
Picture:
!image

Just my two cnets, hope it helps.
Thanks again for your great effort to make this project happen.

Brs,
Ning

#1 – bdring 于 2020-05-26

It only has one core. I hear a dual core version is coming soon.

It would take a lot of work to refactor for one core and performance may not be as good.

#2 – MitchBradley 于 2020-05-26

I bought an S2 but made the mistake of getting the bare chip instead of a module. Originally I was excited by the fact that it has more I/Os, but it turns out that the number of extra I/Os is not enough to truly “change the game”. The recent I2S work is that “game changer”; it provides 32 extra outputs with fast, stable stepping, and could provide a similar number of extra inputs if needed. The shift register chips that it uses are inexpensive. They can be distributed around the board in ways that make PCB layout easier.

#3 – ningzhang-github 于 2020-05-28

Okay now I understand, I would like to close this thread since developers are all aware of the info I mentioned.
PS: Just read through the I2S I/O extension PR, brilliant! Can’t wait to see its release.

原始Issue: https://github.com/bdring/Grbl_Esp32/issues/413

评论 (3)