This is a simple example to show jpg on display app.
#include <Arduino.h>#include <DisplayApp.h>#include "SdUsbConnect.h"DisplayApp display_app;SdUsbConnect storage("storage");void setup() { Serial.begin(9600); pinMode(PIN_LED_RED, OUTPUT); pinMode(PIN_LED_GREEN, OUTPUT); pinMode(PIN_LED_BLUE, OUTPUT); Serial.println("Test starts"); // SD & USB Serial.print("Finding strage.."); storage.wait_connect(); Serial.println("done");}void loop() { FILE * fp = fopen("/storage/faceimg.jpg", "r"); if (fp != NULL) { digitalWrite(PIN_LED_GREEN, HIGH); fseek(fp, 0, SEEK_END); uint32_t jpegSize = ftell(fp); fseek(fp, 0, SEEK_SET); uint8_t * buffer = (uint8_t*) malloc (jpegSize); for(uint32_t i = 0; i < jpegSize; i++){ buffer[i] = (uint8_t)fgetc(fp); } display_app.SendJpeg(buffer, jpegSize); fclose (fp); digitalWrite(PIN_LED_GREEN, LOW); } else { Serial.print("Not found jpg"); digitalWrite(PIN_LED_RED, HIGH); delay(1); }}