SparkFun FTDI Basic Breakout-Precautions when programming ESP32-WROOM-32D using 3.3V
Thinks next. Is there anything else?
Content
Your company
Using SparkFun FTDI Basic Breakout-3.3V,
When connecting
It is on the circuit diagram of your company’s SparkFun ESP32 Thing
Create a circuit for AUTO RESET (DTR and RTS),
After creating the AUTO RESET circuit
SparkFun FTDI Basic Breakout-Connect 3.3V to DTR and RTS at that location
Connects ESP32-WROOM-32D AUTO RESET circuit 0 and GPIO 0
Connect CHIP_PU and EN
other
3.3V and GND
Connect SparkFun FTDI Basic Breakout-3.3V (RX) and ESP32-WROOM-32D (TX)
Connect SparkFun FTDI Basic Breakout-3.3V (TX) and ESP32-WROOM-32D (RX)
Additional contact
What you want to do with this
Writing an ARDUINO program.
Therefore
Of the ESP32-WROOM-32D mentioned above
RX and TX use RX and TX of UART0. Added due to omission of description.
Not detailed in English
I tried to convey the wiring in sentences,
Sorry for the inconvenience.
Currently, connect like an attached file,
Even if you try to write the ARDUINO program to ESP32-WROOM-32D
I can’t write.
attached file,URL
https://www.dropbox.com/s/1j3sc06hmh9vj … e.pdf?dl=0
Feedback
Make the following wiring
Without floating the ESP32,
After fixing to wood
It worked.
State at the time when it does not work
〇 Part of GND is not wired.
〇 ESP32 is connected only by electric wires,
It was floating.
〇 About writing
Attached figure: Press the IO0 switch during writing, and after writing,
At the start of the program
By pressing the EN switch
It works.
Attached figure
= =
https://www.dropbox.com/preview/ESP32pr … 200921.pdf
= =
I follow the following url
I was able to write. Conducted multiple times
I wrote it without any problem.
Final figure
https://www.dropbox.com/preview/esp32_20201005.pdf
Arduino settings
Board sparkfun esp32
Baud rate 115200bps
Partition initial value
No debug level
Serial port settings