Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [cp2102]

The CP2102 is a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating RS-232 designs to USB using a minimum of components and PCB space.

43 questions
7
votes
7 answers

ESP32 Dev Board DTR/RTS

I recently got an ESP32 development board. I also found the schematic to this board online but I got an question. Can someone explain to me, what this part of the circuit is doing? Schematic:…
Zedipl
  • 73
  • 1
  • 4
3
votes
3 answers

Why does ESP DevKit have 0Ω resistors for the TX and RX?

I am trying to build my own ESP32 based PCB. I tried to copy the USB-to-serial circuit from the official DevKit. There I see two 0Ω resistors. Why did they add them? What do they do? USB to Serial datasheet (cp2102n):…
Carlos Garcia
  • 1,116
  • 1
  • 7
  • 25
3
votes
1 answer

Weird problem with usb2422 and CP2108

I've have a system consisting of a Raspberry Pi Zero W, a usb2422 USB-hub, a CP2108 Uart-to-USB converter as well as another USB device (lets call it device 2, it doesn't matter which one I plug in). Starting the circuit up, i have access to device…
user263694
  • 41
  • 4
2
votes
1 answer

Why does the ESP32 DevKit has a green box?

I am trying to copy the ESP32 DevKit behavior in my own PCB (my pcb project). I want that the ESP is powered from USB when plugged (for programming purpose only), but then powered by my external PSU when USB is not in use (normal operation). While…
Carlos Garcia
  • 1,116
  • 1
  • 7
  • 25
2
votes
1 answer

Silicon Labs CP2102 usb recognition error

Good Morning everyone, I have recently designed a circuitry design for the named chip "CP2102N-A02-GQFN24". Problems appear after connecting the chip to the computer. It doesn't get recognised properly. It shows that the connected device is not…
Paul
  • 131
  • 6
2
votes
1 answer

How does the Arduino do serial communication with a PC?

I am trying to develop a program such that I am able to communicate over USB to a PC. I have developed a usart library that I can use for such a purpose, but the problem in-lies with the conversion to the usb protocol. I searched around on the net a…
sherrellbc
  • 3,431
  • 6
  • 35
  • 62
1
vote
0 answers

Why MCU is not working without USB connected to PC

This my circuit of USB * CP2102, which i am using for PIC(18F6722) controller for USB communication (For Hex loading & USB Port communication). My problem is after hex loading, microcontroller can not start without USB connected to my pc,…
Bhushan Waghe
  • 163
  • 10
1
vote
1 answer

ESP32 USB-C connectivity issues with CP2102N

Context: I designed some PCBs for a device that uses the ESP32-PICO-D4 as a backbone connected with USB-C via the CP2102N. I manually assembled my PCB incrementally as to detect problems immediately as they come. Unfortunately, I did not get very…
BlueOyster
  • 43
  • 4
1
vote
0 answers

ESP32 custom board flashing not working

I'm trying to build a custom microcontroller board based on the ESP32 chip (just the chip, not the WROOM module). I've got to the point where all the power works and the USB to serial gets recognized. I'm now trying to flash the ESP, but the chip…
lemmE
  • 35
  • 4
1
vote
1 answer

CP2102N chip recognized by Windows, but no data is received from ESP32-S3

I have a problem with a custom board. I have tried to implement the CP2102N with the ESP32-S3-WROOM-1 module and an USB-C port in order to enable auto-download and write directly to the chip via a USB connection. To be safe I also exposed the GND,…
Gianfranco Di Domenico
  • 21
  • 2
1
vote
1 answer

COM Port not Detected on Windows for CP2102 on Custom PCB

I am using CP2102N-A02-GQFN24 on my custom PCB to program my ESP32 board. I am not able to see any COM port on my Windows 10 PC. I can connect to an off the shelf CP2102N-A02-GQFN28 USB UART bridge board to my computer. So I think that rules out…
rtgb
  • 21
  • 4
1
vote
1 answer

Can DTR be replaced with GPIO0 in this USB to UART auto-program circuit?

These auto-program circuits have been popular for a long time. They replace the need to press boot and reset physically to put the MCU into programming mode. Some USB to UART converters do not have a DTR pin, but do have GPIOs that can be programmed…
BonaFidel
  • 11
  • 2
1
vote
1 answer

How to utilize USB-Type-C connector as a normal connector?

I designed two custom PCB boards with one acting as my main Sensor Board and having a Controller (ESP32) interfacing all the sensors and peripherals. The other board is a programmer board that houses a CP2102 circuitry for converting USB protocol…
Ash Ketchum
  • 25
  • 3
1
vote
2 answers

Issues with CP2102 USB bus-powered and esp8266

I currently have some problems getting the cp2102 and esp8266 to work together on my board and was wondering if some of you can spot the problem or have some hints for me. The issue is, that I'm not able to upload anything to the esp8266 ( timeout…
Patrick B
  • 11
  • 2
1
vote
0 answers

STM32F103VCT6 Custom board not working

I made a custom board using STM32F103VCT6 MCU as shown in the attached schematic below. I soldered all the components as per the schematic and powered it on. The board worked for sometime and stopped working. We found that the 3.3V line was shorted…
Farvez Farook
  • 101
  • 9
1
2 3