Re: GPIO2 and TXD interaction???
Posted: Sat Feb 13, 2016 8:36 pm
I was thinking the Blue Led was on the ESP.....
On my ESP-13 If I apply 500 ohm to grd on gpio1(Rx) --> usb(Tx) the blue led on usb comes on..
my gpio2 is high / floating [not connected] appling 500 ohm shows nothing , which I expected....
The only way to turn on the Blue led with GPIO2 is 1) partial short 2) program error 3) Firmware issue
try reset unit , do not allow program to run, chk gpio1 / 2 level [ solid reset 470-gnd may force gpio1/2 hi ??]
Hopefully both will be hi --- apply 470 ohm gpio1 to gnd blue led on
--- apply 470 ohm gpio2 your led on [unless you are acting as source]
On my ESP-13 If I apply 500 ohm to grd on gpio1(Rx) --> usb(Tx) the blue led on usb comes on..
my gpio2 is high / floating [not connected] appling 500 ohm shows nothing , which I expected....
The only way to turn on the Blue led with GPIO2 is 1) partial short 2) program error 3) Firmware issue
try reset unit , do not allow program to run, chk gpio1 / 2 level [ solid reset 470-gnd may force gpio1/2 hi ??]
Hopefully both will be hi --- apply 470 ohm gpio1 to gnd blue led on
--- apply 470 ohm gpio2 your led on [unless you are acting as source]