USB TTL Dat

  • legacy wiki page - https://w.electrodragon.com/w/Serial

Usage

from the perspective of the cable to the perspective of the target

  • Green = TXD -> target RXD
  • White = RXD -> target TXD
  • Red = VCC -> target +5V
  • Black = GND - > target GND

Product links

DPR1153-dat

Use case

programming for ESP32 or ESP8266 :

  • TXD -> RXD
  • RXD -> TXD
  • 5V -> 5V
  • GND -> GND.

Booting Mode select

       Hold down IO0 button, and connect power supply to enter into flash  mode
do NOT Hold down IO0 button, and connect power supply to enter into normal mode
  • please note for ESP32-C3-dat, the programming mode select pin is (button) IO9

Programming Wiring

Confirm selected Mode

  • The COM port monitor used below is com-monitor-dat
  • if your actions are all correct, the module should enter into correct module, and print output as below
  • In this mode, you can close the monitor, and further programming it with other SDK like arduino-esp32-dat

troubleshooting checklist

  • reverse TX RX in case wrong wiring of communication

Applications

Flash target MCU microcontroller

communicate with GPS module

FTDI FT232RL programming arduino pro mini

Programming STM32

  • STM32-dat - ISP USART
  • BOOT0 should be pull to high, foce chip into system memory
  • Flash loader demostrator from official ST = Flasher
  • https://www.st.com/en/development-tools/flasher-stm32.html

Compatibility

replaceable

other interface

Circuits

common PCB setup

  • one row: GND / RXD / TXD / VCC
  • two row -1: GND / VCC
  • two row -2: RXD / TXD

ref

software com-monitor-dat

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