Hi, We are considering ESP32-S3-Wroom-1U module for one of the robust product development. It has got upto 6 capacitive touch buttons. Is there any development kit that I can procure to test out the touch channels on ESP32-S3? I came across ESP32-S2-Touch-Devkit-1 but could not find any way to buy i...

Finally solved it, but I will have to redesign the board! I had selected GPIO2 for I2C SCL signal that was pulled up and found that it has to be left floating or GND for ESP32 to enter to boot mode. I only have GPIO23, 13 spare now and have GPIO15 as SDA. So hope I can use any of 23 or 13 as I2C SCL...

Hi, shorting GPIO0 to GND also does not help. But I am getting these logs in putty now.

Finally managed to get these prints on putty - after properly having 4.7k pull up and 4.7uF to gnd on EN pin. Still firmware erase is not being done. ets Jun 8 2016 00:22:57 rst:0x1 (POWERON_RESET),boot:0x1b (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x...

1. Loopback test is working alright for CP2102N IC - disconnected R19, R20 on my schematics and then shorted RXD, TXD of CP2102N and it is working well. Image attached.

2. The module I am using is ESP32-WROOM-32U, so looks like something is wrong on that side.

Hi,
This is little urgent. is there anyway I can send the schematics file and PCB layout privately? Can you suggest me other ways to debug the issue?

Update: Putty isn't showing anything, any prints.

I think TXD of CP2102 is rightly connected to RXD of ESP32. May I know where have you noticed that thing?

Let me try the other things you have mentioned.

tried connecting 10k resistor and 10uF cap close to esp32 module, still getting the same error.

Yes, I missed putting 10k EN RC ckt but even after trying that out, it is still showing the same error. Is it that I need to put this RC near to ESP32 module?
Currently I am putting it at close to CP2102 chip. Check these images.