Search found 13 matches
- Mon Feb 20, 2023 11:10 am
- Forum: ESP32 Arduino
- Topic: ESP32-C3 odd USB problems and no communication
- Replies: 2
- Views: 2425
Re: ESP32-C3 odd USB problems and no communication
Would anyone happen to know why it is required to run espefuse summary to fix the USB?
- Sat Feb 18, 2023 8:26 pm
- Forum: ESP32 Arduino
- Topic: ESP32-C3 odd USB problems and no communication
- Replies: 2
- Views: 2425
Re: ESP32-C3 odd USB problems and no communication
So I got it working by setting USB CDC and Enable Erase Flash in Arduino IDE.
Still preplexed why I had to run espefuse summary to get the USB to stop acting up though.
Still preplexed why I had to run espefuse summary to get the USB to stop acting up though.
- Sat Feb 18, 2023 6:40 am
- Forum: ESP32 Arduino
- Topic: ESP32-C3 odd USB problems and no communication
- Replies: 2
- Views: 2425
ESP32-C3 odd USB problems and no communication
I have a custom ESP32-C3-WROOM-02 board keeps connecting/disconnecting the USB port. I can see the port come up in Arduino IDE, but 2 seconds later it disappears, then come back and so on D-/D+ is connected directly to IO18/19. The board of course has 5V to 3V3 for power. An original dev board from ...
- Tue Jan 31, 2023 1:09 pm
- Forum: Hardware
- Topic: Adding an EMI shield over ESP32 SOCs
- Replies: 1
- Views: 1298
Adding an EMI shield over ESP32 SOCs
Would anyone happen to know which components should be covered by an EMI can? I am working with limited available space under then can. It seems I will be able to fit the SOC and some passives like the 3V3 decoupling capacitors. Should I also try to cram the antenna coil or any other passives under ...
- Tue Mar 08, 2022 8:35 am
- Forum: General Discussion
- Topic: ESP32 with CP2102N QFN-20
- Replies: 0
- Views: 1034
ESP32 with CP2102N QFN-20
Hi all! Would anyone happen to have experience with the QFN-20 version of the CP2102N and ESP32? An autoprogram circuit with a dual transistor uses DTR and RTS to pull EN and IO0 low. The QFN-20 does not have a DTR pin. Is the alternative as simple as programming GPIO1 or 0 on the CP2102N to be low ...
- Thu Nov 01, 2018 6:19 am
- Forum: ESP32 Arduino
- Topic: Problem with pullup on serial pin
- Replies: 5
- Views: 13964
Re: Problem with pullup on serial pin
Thank you, this worked.
Also the baud rate was 9600, even though manf. says 38400 in datasheet.
Also the baud rate was 9600, even though manf. says 38400 in datasheet.
- Mon Oct 29, 2018 12:04 am
- Forum: ESP32 Arduino
- Topic: Problem with pullup on serial pin
- Replies: 5
- Views: 13964
Re: Problem with pullup on serial pin
@WiFive
So what is the best option in my case (ESP32 wroom)?
Is there another way to test this before burning the fuses?
So what is the best option in my case (ESP32 wroom)?
Is there another way to test this before burning the fuses?
- Sat Oct 27, 2018 5:12 pm
- Forum: ESP32 Arduino
- Topic: Problem with pullup on serial pin
- Replies: 5
- Views: 13964
Re: Problem with pullup on serial pin
12 (MTDI) If driven High, flash voltage (VDD_SDIO) is 1.8V not default 3.3V. Has internal pull-down, so unconnected = Low = 3.3V. May prevent flashing and/or booting if 3.3V flash is used and this pin is pulled high, causing the flash to brownout. See the ESP32 datasheet for more details. Is this w...
- Fri Oct 26, 2018 12:43 am
- Forum: ESP32 Arduino
- Topic: Problem with pullup on serial pin
- Replies: 5
- Views: 13964
Problem with pullup on serial pin
Hi guys, I have an external module connected to the ESP32 with hardwareserial as RX GPIO12, TX GPIO14. HardwareSerial Serial2(2); void setup() { Serial2.begin(38400, SERIAL_8N1, 12, 14); } The module datasheet states that it's UART TX pin is open drain and needs a 10K ohm pullup (in my case to 3.3V)...
- Wed Oct 03, 2018 11:31 pm
- Forum: Hardware
- Topic: Which pins would you recommend for alternative HWSerial
- Replies: 2
- Views: 4256