How to use GPIO or UART ports?
Hello to everyone, I am newbie on Elecrow HMI Displays and I have a probably a simple (for you sure) question.
Suppose I have any sensor/board that uses GPIO port or UART interface of an HMI display, can I use this sensor/board with only using Elecrow's ports over or do I need to use an extra device with microprocessor?
If so, is there any tutorial/video/documentation about using Elecrow HMI Displays with hardware? Because nearly all tutorials are just about the design of HMI with SquareLine Studio and compile to Arduino IDE.
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Hello @AlpDmr ,
May I kindly ask what the size of your HMI display is?
What's more, we are recording a new video tutorial series, which includes how to use GPIO and UART. I will let you know when it is released, please stay tuned.
First of all thanks for your reply.
My display is below one but first version (without I2C)
7.0-inch: https://wiki.elecrow.com/index.php?title=ESP32_Display_7.0-inch_HMI_Arduino_Tutorial#Connect_with_Sensors.2FModules
This is amazing news, I am waiting this series with excitement. Is there any ETA for the release date?
Actually I've found the version that I have here (probably it is not produced anymore): https://wiki.elecrow.com/index.php?title=Wizee-ESP32_7.0''_Intelligent_Touch_Screen_Wi-Fi&BLE_800*480_HMI_Display
Addition to above question, I also would like to ask that, is it possible to use other pins (e.g. pins of UART interface) as additional GPIO? Because I need more GPIO pins for my project and this model has no i2c interface (and nearly all GPIO expanders are using i2c interface).
Hello @AlpDmr ,
The videos will be released before June.
And yes, you can use UART0 as I2C, but please note that the UART0 and the USB serial port are multiplexed, so when you use the UART0 port, you will not be able to debug it.