<![CDATA[need your advice for data transfer from a CORE2 to an ATOM display !]]>What is the simplest and fastest communication solution (Modbus, UART, CAN,...) to communicate around 20 variables from a CORE2 to an ATOM DISPLAY? the two controllers will be in the same box at 10cm.
Should the data be sent as a list? do you have any examples in UIFLOW?

]]>https://community.m5stack.com/topic/4653/need-your-advice-for-data-transfer-from-a-core2-to-an-atom-displayRSS for NodeWed, 29 Apr 2026 01:00:41 GMTTue, 27 Sep 2022 17:03:05 GMT60<![CDATA[Reply to need your advice for data transfer from a CORE2 to an ATOM display ! on Tue, 27 Sep 2022 20:56:24 GMT]]>Thanks Teastain
I have the expansion module for CORE 2
I am looking for advice on the mode of communication to use to transfer from CORE2 to the ATOM Display, and how to transmit around 20 digital variables?

]]>https://community.m5stack.com/post/18748https://community.m5stack.com/post/18748Tue, 27 Sep 2022 20:56:24 GMT<![CDATA[Reply to need your advice for data transfer from a CORE2 to an ATOM display ! on Tue, 27 Sep 2022 19:17:54 GMT]]>@arno The built-in SPI would provide the fastest frame rate but trickier to access the SPI on the Core2, second choice is the built-in I2C interface accessible by the standard Grove port on the left side.
The Core2 is bereft of GPIO as a nod to WiFi BLE I2C ESP_NOW, etc, whereas the foundational Core Basic is better equipped with I/O options!!!
I think M5Stack announced recently a GPIO base to convert the Core2.
I have a Core2 running a simulated nixie-tube clock and two Core Basics.
https://shop.m5stack.com/collections/m5stack-new-arrival/products/extension-port-module-for-core2?variant=43165402398977

Extension Port Module for Core2
SKU: M123 Regular price$6.95 Out Of Stock

]]>https://community.m5stack.com/post/18744https://community.m5stack.com/post/18744Tue, 27 Sep 2022 19:17:54 GMT