ESP8266 Community Forum

- Fri Sep 18, 2015 5:49 am #29333 Can someone try and help me? I have the board rate correctly ( I think).

It doesn't seem to matter what command I send I always get something wired.

Can somebody help?

Example Commands:

AT<Y{\xd7}{SO}{ETX}{\xfe}Y&{ACK}{\x87}H{\x87}
{\x8e}{\x8e}{RS}{\x87}N{\x8e}{\xfb}{FF}{\xa5}{RS}{BEL}l{\x8e}{\xfe},{\x87}{\xd8}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT
AT+CWMODE=3<Y{\x97}{FF}{ENQ}{\xfe}{GS}{STX}{ACK}{\x87}h{\xa5}
{\x8e}{\x8e}{RS}{\x87}N{\x8e}{\xfb}H{\x87}{RS}{BEL}N{\x8e}{\xfe}H{\x87}{\xda}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT
AT+CWMODE=3
AT+RST8{GS}{\xd7}{SO}{ETX}{\xfe}{GS}{ACK}${\xa5}h{\x87}J{\x8e}{\xac}{RS}{\x87}L{\x8e}{\xfb}{BkSp}{\x8f}{RS}{BEL}N{\xac}{\xfe}H{\x87}{\xda}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT
AT+CWMODE=3
AT+RST
AT+CIPSERVER+1,99998Y{\xd7}{SO}{ETX}{\xfe}Y{STX}{ACK}{\x87}h{\x87}J{\x8e}{\x8e}{RS}{\x87}
{\x8e}{\xfb}{BkSp}{\x87}{RS}{BEL}
{\xac}{\xfe}h{\x87}{\xda}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT+CWMODE=3{FS}Y{\x97},{ETX}{\xfe}Y${ACK}{\x83},{\xa5}
{\x8e}{\x8e}{RS}{\xa5}
{\x8e}{\xfb}{FF}{\x87}{RS}{BEL}N{\x8e}{\xfe}({\xa5}{\x9a}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT+CIPSERVER=1,9999<Y{\xd7}{SO}{BEL}{\xfe}Y{ACK}{STX}{\x87},{\x87}J{\x8e}{\x8e}{RS}{\xa5}
{\x8e}{\xfb}H{\x87}{RS}{BEL}N{\x8e}{\xfe}h{\x87}{\xda}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT+CIFSR<{GS}{\xd7}{SO}%{\xfe}{GS}${STX}{\x87}h{\x85}J{\xac}{\xac}{RS}{\x87}
{\x8e}{\xfb}H{\x87}{RS}{BEL}
{\x8e}{\xfe}h{\x87}{\x9a}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT+CIFSR8{GS}{\xf5}{SO}{BEL}{\xfe}Y{ACK}{STX}{\x85}h{\x87}J{\x8e}{\xac}{RS}{\x87}N{\x8e}{\xfb}{FF}{\xa5}{RS}{BEL}l{\xac}{\xfe}h{\x87}{\xda}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready
AT+CIFSR8{GS}{\xf5}{SO}{ETX}{\xfe}Y{ACK}${\x87},{\xa5}H{\x8c}{\xac}{RS}{\x87}N{\x8e}{\xfb}{BkSp}{\x87}{RS}'
{\x8e}{\xfe},{\xa5}{\x9a}{ACK}
[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready

- Sat Sep 19, 2015 11:56 am #29446 Ok, first off I think you mean Baud rate not "board" rate. Baud rate is the term used to identify speed of data transmission. The "rubbish" you are seeing is simply part of the startup of the chip. Note at the end you see a clean message "[Vendor:www.ai-thinker.com Version:0.9.2.4]

ready" ..... this is a normal restart message. The "garble" is due to the fact that the chip is starting up prior to setting the assigned baud rate.
It appears that each time you send a command the module resets. This can be caused by several things. Most often it's "dirty" or "noisy" power. Make sure you have a clean 3.3V (NOT 5V) power source that can deliver at least 200 mA. If you are confident of that, try adding a filter capacitor across Vcc and Grd. Any value between 10 to a couple hundred mf will improve it. Make sure your TX/RX are wired correctly. Check your terminal emulator settings. These are the most common issues I've seen. Hope that helps.