ESP8266 Community Forum

- Tue Feb 24, 2015 6:17 am #10593 I can't seem to send any commands to the ESP8266. When I'm at 9600 baud rate and reset it, I get junk but it's similar junk.When I'm at 115200 baud and
I reset it and I would get

@atal exception (0):
epc1=0x402191bf, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000000, depc=0x00000000

ets Jan 8 2013,rst cause:4, boot mode:(3,7)

wdt reset
load 0x40100000, len 212, room 16
tail 4
chksum 0x5e
load 0x3ffe8000, len 788, room 4
tail 0
chksum 0x1c
load 0x3ffe8314, len 72, room 8
tail 0
chksum 0x55
csum 0x55
jump to user1

Sometimes it's junk and sometimes I get that. I'm suppose to get a ready but it never appears. Would you guys happen to know what's wrong? The main problem is the fact that I can't send commands. I've checked the wires and everything is in check. I just don't get a response from commands and the only response is from resetting on the RST pin.

- Tue Feb 24, 2015 12:34 pm #10610 Do you have anything attached to GPIO_2 or 0? if so remove it, does it then boot?, if no FLASH firmware(NodeMCU or AT) and start again.....at that point if you can flash firmware the wiring is tested good if not look at the wiring and power.....

- Tue Feb 24, 2015 5:23 pm #10625
This is what my circuit is wired like. The resistors are 2.2kOhm

Last edited by machGTR on Tue Feb 24, 2015 5:31 pm, edited 1 time in total.

- Tue Feb 24, 2015 5:28 pm #10626

Do you have anything attached to GPIO_2 or 0? if so remove it, does it then boot?, if no FLASH firmware(NodeMCU or AT) and start again.....at that point if you can flash firmware the wiring is tested good if not look at the wiring and power.....

GPIO2 is not connected to anything
GPIO0 is not connected to anything when I'm trying to send commands. I have flashed the firmware. I set GPIO0 to gnd, press the reset, and flashed it with a v0.9.5.0 AT Firmware.
After that's done, I disconnect GPIO0 from gnd, press reset, and attempt to send commands but nothing happens. I use ESPlorer to send it.