- Sun May 22, 2016 12:53 pm
#47833
I am waiting for my FTDI serial adapter to arrive so I decided to try to use an Arduino Uno to communicate with my ESP8266 (ESP-01 to be specific) as described in this post http://www.martyncurrey.com/arduino-to- ... mincation/.
I am embarrassed to admit that initially I connected my breadboard power supply to the wrong end of my breadboard thereby reversing the polarity. This resulted in a very warm ESP8266 but otherwise, I think I got away with it because putting it on the correct end has resulted in it largely working with the AT commands. I had to change the speed with which I communicate with the ESP8266 to 9600 from the default 115200 as my Arduino seemed to struggle at the higher speed using softserial (I was using the hardware RX/TX pins to communicate with my computer).
So, for example, if I send the AT+GMR command to my ESP8266 I get the following result:
So far, so good.
However, when I tried to list the local wifi APs, I got the following result:
This looked fine until it got to the fourth AP by which time the output is clearly corrupt. Since I am only communicating at 9600 baud between both my PC and the Arduino and between the Arduino and the ESP8266, I would have thought they could both keep up easily.
Does anyone have any idea what's going on?
I am embarrassed to admit that initially I connected my breadboard power supply to the wrong end of my breadboard thereby reversing the polarity. This resulted in a very warm ESP8266 but otherwise, I think I got away with it because putting it on the correct end has resulted in it largely working with the AT commands. I had to change the speed with which I communicate with the ESP8266 to 9600 from the default 115200 as my Arduino seemed to struggle at the higher speed using softserial (I was using the hardware RX/TX pins to communicate with my computer).
So, for example, if I send the AT+GMR command to my ESP8266 I get the following result:
Code: Select all
AT+GMR
AT version:0.40.0.0(Aug 8 2015 14:45:58)
SDK version:1.3.0
Ai-Thinker Technology Co.,Ltd.
Build:1.3.0.2 Sep 11 2015 11:48:04
OKSo far, so good.
However, when I tried to list the local wifi APs, I got the following result:
Code: Select all
AT+CWLAP
+CWLAP:(4,"Bears3",-80,"2c:b0:5d:43:de:b6",1,-4)
+CWLAP:(4,"Bears1",-83,"9c:d3:6d:8a:3e:78",1,-4)
+CWLAP:(3,"BTHub5-9M78",-87,"5c:dc:96:ea:63:54",1,1)
+CWLAP(,"TWf-wthFN"-9,62d:9:e:3:5"11)
CWA:(,"Tif-",88"2:c:6ea635",,)+CLP:3"ArB etok"-9,28373:4:9:2"140
CLA:(,vrgnmda4052",78"0:ef2a2c:c",,)+CLP:4"V0176-G,-3,c:f:4:c:828,6-)+WLP:4"TLTAK-372"-7,"83ce40:a:3"6,)
+WLP(4"lik,-8,1:b:b:e:c:0,60
CWA:(,"K1567,8,"0:e0fc1d:1"6,)+WLP:4"TLKAK8752,86"e:9:d:f755",,1)
+WLP(4"lian ",49"0:65a2:9:a"105)
CWAP(,"TiF-wt-FN"-8,6:3:4:3:f08,1,1)
CWAP(,"THb-3K8,76"8:ce4337:0",120+CLA:4,VM031-G"-8,9cd:6:2:d:8,1,-)
+WLP(0"TWFiwthFO"-9,"20:d:5:a:2"1,-7)
This looked fine until it got to the fourth AP by which time the output is clearly corrupt. Since I am only communicating at 9600 baud between both my PC and the Arduino and between the Arduino and the ESP8266, I would have thought they could both keep up easily.
Does anyone have any idea what's going on?
