I see, you use the DevKitC.
Have you pushed down the "boot"-Button while programming?

Thanks, very nice!
Look here please.(Arduino-IDE):
https://www.mikrocontroller.net/topic/405743#4790652

Only a hint:
You should take a 8-bit IF for GLCD and merge together
https://s22.postimg.org/nrsef145d/UZE_Box.jpg
with this
https://esp32.com/viewtopic.php?f=19&t=702
look also
http://www.jcwolfram.de/projekte/avr/chipbasic2/hard.php
and:
https://www.mikrocontroller.net/topic/377963#4292846
A lot ...

Used Sparkfun-thing(ESP32) with MSYS comp. and flashed.(Win7)

The simplest Webserver-Sketch I've found.
https://codebender.cc/sketch:37120#SimpleWebServerWiFi.ino
For my "SparkFun ESP32 Thing" I only commented out the:
/* // check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
while(true ...

I also search an easy way to get the input clock frequency for peripherals.
Need the XCLK for OV7670 without the LEDC-module.
Free running (with start/stop) at a GPIO-Pin(frequ. 10 to 48 Mhz)..

Thanks for your hints!
At this point i decide to roll-back my Arduino-IDE.
Unexpectedly where everywhere Arduino15 folder are filed under Windows.
If there were no hardware i need like PC-Scope/Generator(Vellemann) and anymore I would prefer a Linux-Distri.

You can take GPIO32..39 as Input. That's right!
But I need an 8-bit Output for the ILI9325 (ucg-lib) and the pseudo-Input for CAM at the same pins..
p.s.:
Have you found the missing Vsync ?
Use you the VSPI for your ILI9341?
At Prgr.3 I display the contents of the SD-card(not included-->see http ...

This was the right hint.
I've changed it to :
timer_conf.bit_num = LEDC_TIMER_13_BIT;
and it compiled.
13-bit deep timer, i don't know, but seems to be right?

btw.:
The 8-bit Bus for the Display-Output Pins
-->d0 to d7
13,12,14,27,26,25,3,4
Don't use Pins 32 to 39.
These pins are the same for ...

I want to be as closed as possible to Krzysztofs
great
https://github.com/krzychb/esp32-cam-demo#connect ;
Only want to port the idf-project to Arduino-IDE without freeRTOS.
The famous DMA-transfer is good to look at for further use.
I think i would do the reading out of the GRAM-Display with this ...