ESP8266 Community Forum

- Sun Feb 07, 2016 12:09 am #40603

RXD --> TXD
GPIO0 --> GND - For flash, but for runing must be pullup resistor to Vcc!!
GPIO2 --> Floating - Bad, must be pullup resistor to Vcc!!
GND --> GND - GND CH340 Chip + GND powe r+ GND ESP8266
VCC --> VCC - Vcc Esp8266 +Vcc Power only!!
RST --> Floating - Bad, must be pullup resistor to Vcc!!
CH_PD --> VCC
TXD --> RXD

Thanks for the suggestion. However, The problem remains the same.

- Sun Feb 07, 2016 1:30 am #40607 After a few tests, it seems that the computer can detect the COM port sometime, and then AT command can be sent by CoolTerm. However, most of the time the COM port still cannot be detected.

- Sun Feb 07, 2016 11:28 am #40627 sounds like the flashing program is not releasing the port,,, are you TERMINATING/CLOSING the flasher properly??