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Forum Index : Microcontroller and PC projects : ESP8266 on CMM2 or "you can't ping the www.backshed.com"
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andreas Senior Member Joined: 07/12/2020 Location: GermanyPosts: 187 |
Hello, I wanted to connect the Colour Maximite 2 to the internet. My setup is an ESP8266 chip connected to ports 4,6,8,10 of the CMM2. Pin 8 & 10 are for TX/RX of com1: and pin 4 & 6 for VCC and GND. In between I put a dc-dc converter which generates 3.3 volts for the esp from the 5 volts comming from the cmm2. the TX/RX are connected cross over ("null modem") TX Cmm2 to RX ESP and vice versa. The ESP chip enable pin is sourced from the 3.3V comming from the buckboost converter. a tiny "terminal program" gives the possibility to key in ESP8266_AT commands to test all the features: ' terminal.bas - terminal program to interface with esp8266 ' cls print "ESP Terminal on COM1" print "====================" open "com1:115200" AS #1 open "terminal.log" FOR APPEND AS #2 do eingabe$ = "" ausgabe$ = "" eingabe$ = inkey$ if eingabe$ <> "" then print #1,UCASE$(eingabe$); end if if Loc(#1) >=1 then ausgabe$ = input$(1,#1) char = ASC(ausgabe$) if char > 31 then print ausgabe$; print #2, ausgabe$; end if if char = 13 then print #2, "" end if loop And this is the result: OK AT+RESTORE OK ets Jan 8 2013,rst cause:2, boot mode:(3,7) load 0x40100000, len 1856, room 16 tail 0 chksum 0x63 load 0x3ffe8000, len 776, room 8 tail 0 chksum 0x02 load 0x3ffe8310, len 552, room 8 tail 0 chksum 0x79 csum 0x79 2nd boot version : 1.5 SPI Speed : 40MHz SPI Mode : DIO SPI Flash Size & Map: 8Mbit(512KB+512KB) jump to run user1 @ 1000 ??o?s?n|??|rl?s?l?l?l`?s?dl?l`?r?l???ll`sl?rd???cd?cr|bp`lcls?dco?nn?lpl?l?????ll?o???bl?p???cl?cpslrl Ai-Thinker Technology Co. Ltd. ready AT+CWMODE=1 OK AT+CWLAP +CWLAP:(3,"WLAN-E6A414",-81,"9c:80:df:e6:a4:c4",7,0,0) +CWLAP:(3,"hurz",-57,"98:9b:cb:2e:00:ec",12,11,0) +CWLAP:(3,"TEST",-55,"9a:9b:cb:2e:00:ec",12,11,0) OK AT+CIFSR +CIFSR:STAIP,"0.0.0.0" +CIFSR:STAMAC,"c8:c9:a3:64:ef:2b" OK AT+CWJAP_DEF="TEST","SOMEPASSWD" WIFI CONNECTED WIFI GOT IP OK AT+CWAUTOCONN=1 OK AT+CIPSTATUS STATUS:2 OK AT+CIPDOMAIN="WWW.THEBACKSHED.COM" +CIPDOMAIN:223.27.28.33 OK AT+PING="WWW.THEBACKSHED.COM" +timeout ERROR AT+PING="WWW.GOOGLE.COM" +13 OK AT+PING="WWW.THEBACKSHED.COM" +timeout ERROR so, the www.thebackshed.com is not pingable sources: https://www.espressif.com/sites/default/files/4a-esp8266_at_instruction_set_en_v1.5.4_0.pdf - the at commands https://www.instructables.com/Using-the-ESP8266-module/ - inspiration for the terminal program -andreas |
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