ESP8266 Community Forum

- Sat Apr 04, 2015 8:31 pm #13513 ESP 8266 -07 connected to Bray Terminal on Win 7 PC
I am using a custom baud rate of 76800, 8,N,1 (all others produce garbage)
electrical connections to ESP are 3.3V, common ground, Tx, Rx, CH_PD to Vcc (regulated P/S rated 1A)
If I break and make the CH_PD connection, I get the following:
ets Jan 8 2013,rst cause:1 , boot mode:(7,7)
waiting for host
However, the chip Rx appears to be deaf and does not respond to any AT commands at any baud rate. I get same results using second ESP with same hook up. If I ground GPIO15 and I break and make the CH_PD connection I get :

ets Jan 8 2013,rst cause:1, boot mode:(3,6)

load 0x40100000, len 25052, room 16
tail 12
chksum 0x0b
ho 0 tail 12 room 4
load 0x3ffe8000, len 3312, room 12
tail 4
chksum 0x53
load 0x3ffe8cf0, len 6576, room 4
tail 12
chksum 0x0d
csum 0x0d
€€<00><00>€<00>€€€€<00>€€€€€<00>€<00>€€<00><00>€€€€<00><00>€<00>€<00>€€€€€€€€€<00>€<00>€<00>€€<00>€€€€€<00><00>€€<00>€€€<00>€€<00>€€€€€€€€<00>€<00><00>€<00>€<00>€<00>€€€€€€€€<00><00><00>€€€€€<00>€<00><00>€€<00>€€<00>€€€€€<00>€€<00>€<00><00><00><00>€<00>€<00><00><00>€<00><00><00><00><00>€<00><00>€<00>€€€€€€<00><00>€<00>€€<00><00>€<00><00><00>€€€<00>€€<00>€<00><00>€€<00>€€€<00><00>€<00>

Any help would be appreciated.
Thanks

Last edited by butchalline on Sun Apr 05, 2015 1:17 pm, edited 1 time in total.

- Sat Apr 04, 2015 8:49 pm #13514 try to use different baudrate. that garbage in your post could be readable at different baud.

- Sun Apr 05, 2015 1:15 pm #13583 You are correct SoC. The 9600 baud rate works only when GPIO15 is grounded (which it was not when I was testing various baud rates).
Summary of what worked for me:
GPIO pin 15 must be grounded, CH_PD must be tied to Vcc. Baud rate 9600,8,N,1.
In addition there was some weirdness using Bray terminal. I had to use the macro window to send AT+RST$0D$0A.
AT+RST#013#010 and sending in the transmit window did NOT work.