ESP32 Forum

Posted: **Thu Jun 06, 2024 3:33 pm**

Hi, I am trying to use my esp32-cam with a TFT display and Wi-Fi at the same. If I use the display on its own it works fine and when I use Wi-Fi on its own it also works fine, but when I try to use them together it doesn't work.

This is my code:

Code: [Select all] [Expand/Collapse]

#include "image.h"
#include <SPI.h>
#include <TFT_eSPI.h>
TFT_eSPI tft = TFT_eSPI();
#include <TJpg_Decoder.h>
 
#include <WiFi.h>  
#include <PubSubClient.h>
const char* ssid = "****";
const char* password = "****";
 
void setup_wifi() {
  delay(10);
 
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
 
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
 
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
 
  randomSeed(micros());
 
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}
 
 
bool tft_output(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t* bitmap)
{
   // Stop further decoding as image is running off bottom of screen
  if ( y >= tft.height() ) return 0;
 
  // This function will clip the image block rendering automatically at the TFT boundaries
  tft.pushImage(x, y, w, h, bitmap);
 
  // Return 1 to decode next block
  return 1;
}
 
 
void setup() {
  delay(500);
  Serial.begin(115200);
  delay(500);
 
  Serial.print("TFT_MOSI: ");
  Serial.println(TFT_MOSI);
  Serial.print("TFT_SCLK: ");
  Serial.println(TFT_SCLK);
  Serial.print("TFT_CS: ");
  Serial.println(TFT_CS);
  Serial.print("TFT_DC: ");
  Serial.println(TFT_DC);
  Serial.print("TFT_RST: ");
  Serial.println(TFT_RST);
  
  tft.begin();
  tft.setRotation(1);  // 0 & 2 Portrait. 1 & 3 landscape
  tft.fillScreen(TFT_BLACK);
  tft.setCursor(0,0);
  tft.setTextColor(TFT_WHITE);
  tft.setTextSize(1);
  delay(5000);
 
  TJpgDec.setSwapBytes(true);
  TJpgDec.setJpgScale(1);
  TJpgDec.setCallback(tft_output);
 
  delay(1000);
  setup_wifi();
 
}
 
 
void loop()
{
  TJpgDec.drawJpg(tft.getViewportX(), tft.getViewportY(), image, sizeof(image));
}

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And this is how I have set up the display pins in the User_Setup.h of the TFT_eSPI library:

Code: [Select all] [Expand/Collapse]

#define TFT_MOSI  13
#define TFT_SCLK  12
#define TFT_CS    14
#define TFT_DC    15
#define TFT_RST  -1 

Posted: **Fri Jun 07, 2024 2:17 am**

WiFi initialization is the most power intense activity for a esp32. Try init'ing wifi before you power up the display.
For better assistance, explain what "doesn't work" means.

ESP32 Forum

ESP32-CAM TFT display and Wi-Fi trouble

ESP32-CAM TFT display and Wi-Fi trouble

Re: ESP32-CAM TFT display and Wi-Fi trouble