ESP32 Display Update History

Elecrow · February 17

Here we record the changes to the esp32 displays

📕June 2024

The latest version of the 5-inch and 7-inch screens is version 3.0, which adds the chip PCA9557 to increase timing control. Therefore, you need to add the PCA9557 library to make the touch work properly.

Video: https://www.youtube.com/watch?v=Y31AEXCWI4M

Code: https://github.com/Elecrow-RD/CrowPanel-ESP32-Display-Course-File/tree/main/CrowPanel_ESP32_Tutorial/Code

①Add the PCA9557 library:

#include <PCA9557.h>

②Define the PCA9557 object:

PCA9557 Out;

③Control with RESET and EN to meet the timing requirements:

Wire.begin(19, 20);
Out.reset();
Out.setMode(IO_OUTPUT); //Set to output mode
Out.setState(IO0, IO_LOW);
Out.setState(IO1, IO_LOW);
delay(20);
Out.setState(IO0, IO_HIGH);
delay(100);
Out.setMode(IO1, IO_INPUT);

📕March 2024

Because "SmartView" has been registered by others, we now officially name the HMI series CrowPanel

📙February 2024

1.Product Name change to ~~SmartView Display~~

2.Hardware changes:

Silkscreen: 1. From "Wizee ESP32" to "ESP32 Display-xinch"; 2.From "WZxxx" to "DISxxx"
All sizes of screens have added battery charging circuits. Connect the battery to the BAT interface and you can charge the battery through the USB-C interface.
There is no need to manually press the boot button to enter the burning mode for all screen sizes. After you click download in the compiler, the board will automatically enter the burn-in mode.
After the program download is completed, the program can be automatically run.
For 3.5-inch display, the chip is changed from ESP32-WROOM-32-N4 to ESP32-WROVER-B, PSRAM is changes to 8MB
For 5.0, 7.0-inch display, there's I2C port added