Description
The image not rendered properly to “ui_Image2”.
What MCU/Processor/Board and compiler are you using?
-ESP32-S3 (WT32-S3-Wrover)
-Arduino IDE
What LVGL version are you using?
8.3.4
What do you want to achieve?
Display base64 decoded message on screen
What have you tried so far?
The code block(s) should be formatted like:
//This code receive an Mqtt base64 message and decoded the message before displaying it to “ui_Image2” generated using Squareline Studio.
void messageArrived(char* topic, byte* payload, unsigned int length) {
String message = “”;
for (int i = 0; i < length; i++) {
message += (char)payload[i];
}
message.trim();
Serial.println("Received message: " + message);
// Decode the base64 message
size_t decodedSize;
uint8_t* decodedData = base64_decode((const unsigned char*)message.c_str(), message.length(), &decodedSize);
const lv_img_dsc_t* TemporaryImage = new lv_img_dsc_t({
{
LV_IMG_CF_TRUE_COLOR, //Header CF
0, // header.alwayszero
2, // Unknown
320, // Width
240, // height
},
decodedSize, // data size
decodedData // data
});
lv_img_set_src(ui_Image2, TemporaryImage);
}
Screenshot and/or video
