#558 ESP8266 SerialTest (python)
Exercising ESP8266 module serial communications with python
Notes
I’m using an ESP8266 ESP-01 module with default firmware as detailed in the ESP8266/SerialTest project.
This is a test of driving it with a simple python script espy.py
$ ./espy.py
Usage: espy.py <serial_port>[:baud_rate] <command> [<args>]
Commands:
status
reset
join <ssid> <password>
leave
status
if possible it will return software details, access point and IP address..
$ ./espy.py /dev/tty.wchusbserial2420:115200 status
AT
OK
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
OK
AT+CWMODE?
+CWMODE:2
OK
AT+CWJAP?
No AP
OK
AT+CIFSR
+CIFSR:APIP,"192.168.4.1"
+CIFSR:APMAC,"5e:cf:7f:8b:56:e1"
OK
reset
Reset the ESP board:
$ ./espy.py /dev/tty.wchusbserial2420:115200 reset
AT+RST
OK
ets Jan 8 2013,rst cause:2, boot mode:(3,6)
load 0x40100000, len 1396, room 16
tail 4
chksum 0x89
load 0x3ffe8000, len 776, room 4
tail 4
chksum 0xe8
load 0x3ffe8308, len 540, room 4
tail 8
chksum 0xc0
csum 0xc0
2nd boot version : 1.4(b1)
SPI Speed : 40MHz
SPI Mode : DIO
SPI Flash Size & Map: 8Mbit(512KB+512KB)
jump to run user1 @ 1000
n't use rtc mem data
{l{l
Ai-Thinker Technology Co.,Ltd.
ready
Join an AP SSID
$ ./espy.py /dev/tty.wchusbserial2420:115200 join MySSID my-password
AT+CWMODE=1
OK
AT+CWJAP="MySSID","my-password"
Getting the status:
$ ./espy.py /dev/tty.wchusbserial2420:115200 status
AT
busy p...
OK
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
OK
AT+CWMODE?
+CWMODE:1
OK
AT+CWJAP?
+CWJAP:"MySSID","90:72:40:0f:5b:f8",11,-56
OK
AT+CIFSR
+CIFSR:STAIP,"192.168.10.66"
+CIFSR:STAMAC,"5c:cf:7f:8b:56:e1"
OK
Disconnect from the SSID
Disconnect from the SSID:
$ ./espy.py /dev/tty.wchusbserial2420:115200 leave
AT+CWQAP
OK
WIFI DISCONNECT
Check the status. Confirm: no AP connected.
$ ./espy.py /dev/tty.wchusbserial2420:115200 status
AT
OK
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
OK
AT+CWMODE?
+CWMODE:1
OK
AT+CWJAP?
No AP
OK
AT+CIFSR
+CIFSR:STAIP,"0.0.0.0"
+CIFSR:STAMAC,"5c:cf:7f:8b:56:e1"
OK
Construction
NB: diagrams drawn with the custom parts from ESP8266_fritzing.
