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Forum Index : Microcontroller and PC projects : http://garden.geoffg.net/
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jman Guru  Joined: 12/06/2011 Location: New ZealandPosts: 711 |
Hi Has any body tried Geoff's code yet. http://garden.geoffg.net/ I have not seen the SC article so maybe these points are addressed Looks like a few exit sub should have been exit function With all my ESP8266 modules AT+RST returns AT+RST load 0x40100000, len 25020, room 16 chksum 0x55 load 0x3ffe8000, len 3280, room 12 chksum 0x1d tail 0 csum 0xe1 [System Ready, Vendor:www.ai-thinker.com] In the code the following line does a sanity check [code] SendCmd "AT+RST", "ready" [/code] with the response expected to be "ready" from the above this is never going happen so I changed it to "[System Ready, Vendor:www.ai-thinker.com]" and now we are past this point I cannot get past the next bit. The module has an IP address and is pingable ' Log into the network and setup the server function PRINT "Found the ESP8266. Firmware version " + GetVer$() SendCmd "AT+CWJAP=" + CHR$(34) + SSID$ + CHR$(34) + "," + CHR$(34) + Passwd$ + CHR$(34), "OK" PRINT "Connected to " + SSID$ + ". IP Address " + GetAddr$() SendCmd "AT+CIPMUX=1", "OK" SendCmd "AT+CIPSERVER=1,80", "OK" IF error GOTO ReTryWEB To get the above work the following is required [code] ' The following four constants should be edited to reflect your requirements SSID$ = "SSID" ' Replace SSID with the name of your WiFi network Passwd$ = "passwd" ' Replace passwd with the password to your network Timeout = 20000 ' Error timeout in milliseconds echo = 0 ' Set this to non zero to see all communications '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''' ' This will get the version number of the firmware running on the module FUNCTION GetVer$() LOCAL s$, i IF error THEN EXIT SUB This should be Function ClearBuffer PRINT #1, "AT+GMR" FOR i = 1 TO 3 s$ = GetLine$() IF error THEN EXIT FOR IF echo THEN PRINT s$ NEXT i GetVer$ = s$ END FUNCTION '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''' ' This will get the IP address of the module ' After connecting to the access point it can take several seconds for the ' command to complete. This sub will keep trying to get the address and will ' only return when it has it (this signifies that the connection is made). FUNCTION GetAddr$() LOCAL s$, i, j IF error THEN EXIT SUB This should be Function FOR i = 1 TO 20 ClearBuffer PRINT #1, "AT+CIFSR" FOR j = 1 TO 3 s$ = GetLine$() IF error THEN EXIT FOR IF echo THEN PRINT s$ NEXT j IF LEN(s$) > 5 OR error THEN EXIT FOR PAUSE 1000 NEXT i GetAddr$ = s$ END FUNCTION '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''' ' This is a general purpose sub which will send a command and check ' for the correct response SUB SendCmd cmd$, response$ LOCAL InputStr$ IF error THEN EXIT SUB ClearBuffer PRINT #1, cmd$ DO InputStr$ = GetLine$() LOOP UNTIL INSTR(InputStr$, response$) > 0 OR error END SUB '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''' ' Get a line of text from the module ' This function can work with lines that are longer than the Micromite's ' maximum string length of 255 characters (unlike LINE INPUT) FUNCTION GetLine$() LOCAL s$, c$ TIMER = 0 DO c$ = INPUT$(1, #1) IF echo THEN PRINT c$; IF ASC(c$) = 13 OR LEN(s$) >= 254 THEN GetLine$ = s$ ELSE IF ASC(c$) >= 32 THEN s$ = s$ + c$ ENDIF IF TIMER > Timeout THEN error = 1 LOOP UNTIL ASC(c$) = 13 OR LEN(s$) >= 254 OR error END FUNCTION [/code] Maybe Geoff can point me in the right direction could be a blond moment on my side :) Regards Jman |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
When I browse to Geoff's http://garden.geoffg.net server I get: Welcome to the Micromite Garden Webserver
You are visitor number: 1053 The Micromite time is 19:51:21 and the date is 02-12-2014 The temperature in the garden is 22.5°C and the humidity is 45% The MMBasic program running the server can be downloaded from here. And also browsing to http://garden.geoffg.net/stats I get: Number of connections: 1058
02-12-2014 16:14:00 - Restarting the server 02-12-2014 16:15:03 - Connection number 1026 from 124.195.210.230 02-12-2014 16:19:11 - Connection number 1027 from 212.175.171.2 02-12-2014 16:19:21 - Restarting the server 02-12-2014 16:49:51 - Connection number 1028 from 125.236.241.58 02-12-2014 16:50:33 - Connection number 1029 from 125.236.241.58 02-12-2014 16:51:28 - Connection number 1030 from 125.236.241.58 02-12-2014 17:30:04 - Connection number 1031 from 62.210.136.206 02-12-2014 17:30:09 - Restarting the server 02-12-2014 17:41:02 - Connection number 1032 from 86.186.111.175 etc. If I run Geoff's program on my Micromite/ESP8266 system using my SSID and password and an included PCF8563 RTC I get: >RUN
Starting the server at 02-12-2014 23:02:45 'there's a minute or so delay here, then [260] If ERROR Then Exit Sub Error: Nothing to return to Haven't gotten past here yet. Greg Edit: I should have mentioned - at this stage I don't have a DHT-22 connected. |
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| jman Guru Joined: 12/06/2011 Location: New ZealandPosts: 711 |
Hi To get past the bit were the program stop change the exit sub to exit function I think there is 3 of those that need changes What version of the ESP8266 firmware are you using ? Jman |
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centrex Guru Joined: 13/11/2011 Location: AustraliaPosts: 320 |
At the top of Geoff's code he says ' This server will run on all versions of the Micromite firmware however ' support for the DHT22 temperature/humidity sensor is only present in ' version 4.6 of MMBasic for the Micromite MkII. Perhaps due to the article lead time and all the changes with the BETA versions this has caused the problems noted. cliff Cliff |
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Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3165 |
Unfortunately I am off camping in the great outdoors so I will not be able to look at it for 5 to 6 days. This is a bad habit of mine (going camping when an article hits the streets). The "server" is running an early beta of 4.6 (I cannot remember what beta number). When I get back I will reflash it with the latest and see if I can track down the problem. The issue that Jman encountered could be due to a different version number of the firmware running on the ESP8266. The ESP8266 is a great little device but it is frustrating to use because of issues like this. Geoff Geoff Graham - http://geoffg.net |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
I'm on V0.9.2.2 of the ESP8266 and B25 of MMBasic. I changed those three EXIT Functions and also put the "www.ai-thinker.com" response in but found I didn't need the latter because it does actually come back with "OK" from the AT+RST command - but it's quick - and the it follows with the strange gumpth that ends with the "...ai-thinker" line. I now get to the point where it says "Found the ESP8266..." etc but it doesn't read the version or the address correctly. I think there's some issue in the GetLine$() function or timing there because I get two AT+GMR commands sent, one behind the other. I assume that means it is getting an ERROR. Greg |
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| jman Guru Joined: 12/06/2011 Location: New ZealandPosts: 711 |
@ Greg Try the attached code and report back if it works for you The RTC and DHT22 are commented out as I don't have them connected at present Regards Jman 2014-12-03_082731_WebServerJman.zip |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
@Jim, Yes, that did the job - but only temporarily! When I first fired it up with your code it returned both the Version number and the it's assigned IP address. At that point I could also talk to it via the browser and get both webpages back. After halting it and re-starting it though, it didn't want to get past the Version number, i.e. it returned the Version number but not the IP address. I then cut the power and started again and up it came properly again with both Version and IP address. I halted the program and re-started. Same problem - no IP address. This time I changed the PAUSE in line 236 to 200 (from the 100 you had changed it to) and ran it and lo, it worked properly again but not after halting and starting again. I didn't try fiddling with the AT+CWMODE, I left it at 1 where you had changed it to (from 3). It all seems a bit random - there are obviously a few bugs still in their firmware. Greg |
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| jman Guru Joined: 12/06/2011 Location: New ZealandPosts: 711 |
@Greg Ok I see that issue if you add the line below all should be well should be around line 71 [Code] SendCmd "AT+RST", "chksum 0xe1" ClearBuffer <<<<<<< Add this [/Code] The AT+CWMODE=1 sets the module in client mode only and AT+CWMODE=3 set it to Client and Access Point mode I don't need this module to act as an access point so I changed it client mode only Regards Jman |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
Same problem Jim, it gets the Version number but not the address. BTW the address has changed since the other day, I guess the router did a DHCP re-assignment. I could put a fixed IP in there but I'm not sure what the modules MAC is. Geoff mentions that in his SC article but doesn't say how he got the MAC. Can you re-post the file that you have now please - I'm not sure I haven't changed things I shouldn't have here. Greg |
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| jman Guru Joined: 12/06/2011 Location: New ZealandPosts: 711 |
Sure this code works for me 2014-12-04_072148_WebServerJman.zip BTW it's John :) Regards Jman |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
HI John - sorry about that  ,
Still having trouble with that latest file. My system returns two IP addresses when AT+CIFSR is sent, as below, and 192.168.1.2 pings OK, the .4.1 one doesn't. AT+CIFSR
192.168.4.1 192.168.1.2 OK The first address shouldn't exist on my system, the second is the correct DHCP assigned address for the module. In any case it won't pick the address up until I change the response for the line "SendCmd "AT+CWJAP=...." from "OK" to "csum 0xe1" because that rubbish keeps flowing through. Here's what the output looks like: RUN
Starting the server at 04-12-2014 23:40:23 AT OK AT+RST OK ets Jan 8 2013,rst cause:4, boot mode:(3,7) wdt reset load 0x40100000, len 25020, room 16 tail 12 chksum 0x55 ho 0 tail 12 room 4 load 0x3ffe8000, len 3280, room 12 tail 4 chksum 0x1d load 0x3ffe8cd0, len 6468, room 4 tail 0 chksum 0xe1 AT+GMR AT+GMR 0018000902 0018000902 Found the ESP8266. Firmware version 0018000902 AT+CWJAP="YSAWNET","My_PWD" ets Jan 8 2013,rst cause:4, boot mode:(3,7) wdt reset load 0x40100000, len 25020, room 16 tail 12 chksum 0x55 ho 0 tail 12 room 4 load 0x3ffe8000, len 3280, room 12 tail 4 chksum 0x1d load 0x3ffe8cd0, len 6468, room 4 tail 0 chksum 0xe1 csum 0xe1 AT+CIFSR AT+CIFSR 192.168.4.1 192.168.4.1 Connected to YSAWNET. IP Address 192.168.4.1 AT+CIPMUX=1 OK AT+CIPSERVER=1,80 OK WEB server started ets Jan 8 2013,rst cause:4, boot mode:(3,7) wdt reset load 0x40100000, len 25020, room 16 tail 12 chksum 0x55 ho 0 tail 12 room 4 load 0x3ffe8000, len 3280, room 12 tail 4 chksum 0x1d load 0x3ffe8cd0, len 6468, room 4 tail 0 chksum 0xe1 csum 0xe1 [System Ready, Vendor:www.ai-thinker.com] Those two identical IP addresses, 192.168.4.1 usually show up as the two addresses as per the box at the top of the post. This is frustrating - I might give it a miss for a few days! Greg |
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| WhiteWizzard Guru Joined: 05/04/2013 Location: United KingdomPosts: 2794 |
All, Two points that may prove useful to 'beginners' - observed while I have been playing with the ESP8266 unit (along with Geoff's article in December's SC Magazine). 1> In Geoff's article: Fig 4 on Page 32 shows connection between the ESP8266 and a 28-pin MicroMite. The two MicroMite Pins used should be 22 and 21 - and not 22 and 23 as indicated. Simply read Pin 23 (from the Fig 4) as Pin 21. 2> If using TeraTerm then make sure that under the 'Setup' tab (then 'Terminal' menu option): that New-Line Transmit option is set to CR+LF. If it is only set to CR then you won't get the 'OK' responses from the ESP module (took me a while to track this one down!!) I also get two IPs returned in response to the AT+CIFSR command (the first one is 'invalid', the second one is on my network and works just fine) Loving the capabilities at the moment - but unit does run warm! Hope the above information helps at least some of you out there . . . . WW For everything Micromite visit micromite.org Direct Email: whitewizzard@micromite.o |
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| jman Guru Joined: 12/06/2011 Location: New ZealandPosts: 711 |
Hi The reason you get 2 IP address's is that you have the module in AP and Client mode "Print #1, "AT+CWMODE=1" Will put the module in client mode and you get only one IP Print #1, "AT+CWMODE=3" will put the module in AP and Client mode and you will get two IP's one from the AP (Not your network) and one from your network Since the module is getting to your WiFi network you do NOT need an additional Access point so I suggest turning if off. Regards Jman |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
I should have realised that John, I knew mode 3 was AP & client. I've just gone back to AT+CWMODE=1 and now getting one address returned. For some reason though the code is returning 0.0.0.0 as the address even though it's actually connected to 192.168.1.2 (I've checked it with the terminal program and I can ping it). Also it now doesn't return the Version number whereas before it did. I'm wondering whether it's corrupted something that it stores in flash and maybe I should re-flash it. BTW I noticed that on ESP8266 forum that Espressif put out a new firmware version on the 28th Nov. From what I've read about it there though there are other issues now. Greg |
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| jman Guru Joined: 12/06/2011 Location: New ZealandPosts: 711 |
Hi Greg I have attached the latest SSP8266 firmware Upgrade the module and then try the attached basic code The ESP8266 now supports a watchdog so we can recover if the module goes haywire Regards Jman 2014-12-06_215131_ESP8266_AT_V00180902_04.zip 2014-12-06_215146_WebServerJman.zip |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
OK John, I re-flashed it to the file above and now I'm running the ..-AIO3 version. Thanks for posting that. I then ran the Version of "Garden" you posted above (after getting slightly confused with the DHT11 stuff till I realised what was going on ) and after a few tries when it could only get the Version number again, it finally found the IP address and I could access it properly with the browser. Unfortunately that just lasted for a few runs and it lost itself again. At this stage I've tried re-starting a few times and powering off/on but still can't get it - right now it doesn't even find the Version number. 
I wondered if it was having trouble accessing the router but that's only about three meters away, albeit through a plaster wall, and there have been times when it's had no trouble so I think that's unlikely. I'll press on. Greg |
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| jman Guru Joined: 12/06/2011 Location: New ZealandPosts: 711 |
Hi Greg Just a thought does your module have a good 3.3V supply at full power these modules seem to pull more than the MCP1702 can supply the LM1117 seems to work ok also add .100uf cap across the power pins on the module. Try adding the line below this will enable the modules watchdog ' Open communications with the ESP8266 module Open "COM1:115200, 1024" As #1 Print #1, "AT+CSYSWDTENABLE" '<<<<<<<<<< Add this line Let us know who you get on Regards Jman |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1328 |
Hi John, The supply should be fine, it's an LM2596 based adjustable switchmode supposed to be good for better than 2A. However, I did put a 0.1uF across the supply and when I first fired it up tonight with last night's code it came in immediately, found the IP on the first try and then gave me three good sets of responses from the browser. Unfortunately then it stopped. I then tried several combinations of restarts and power down/ups to no avail, then I added in the module watchdog and still no go. I started wondering about my router so had a look at its log and below is a section of it. That MAC address is the module and it looks like it's sending to the router alright but not acknowledging the "ack". Dec 08 22:37:42 daemon DHCP SERVER: DHCPDISCOVER from 18:fe:34:98:67:09 via br0
Dec 08 22:37:43 daemon DHCP SERVER: DHCP offer to 18:fe:34:98:67:09 Dec 08 22:37:43 daemon DHCP SERVER: DHCP request from 18:fe:34:98:67:09 Dec 08 22:37:43 daemon DHCP SERVER: DHCP ack to 18:fe:34:98:67:09 Dec 08 22:38:30 daemon DHCP SERVER: DHCPDISCOVER from 18:fe:34:98:67:09 via br0 Dec 08 22:38:31 daemon DHCP SERVER: DHCP offer to 18:fe:34:98:67:09 Dec 08 22:38:31 daemon DHCP SERVER: DHCP request from 18:fe:34:98:67:09 Dec 08 22:38:31 daemon DHCP SERVER: DHCP ack to 18:fe:34:98:67:09 Dec 08 22:39:01 daemon DHCP SERVER: DHCPDISCOVER from 18:fe:34:98:67:09 via br0 Dec 08 22:39:02 daemon DHCP SERVER: DHCP offer to 18:fe:34:98:67:09 Dec 08 22:39:02 daemon DHCP SERVER: DHCP request from 18:fe:34:98:67:09 Dec 08 22:39:02 daemon DHCP SERVER: DHCP ack to 18:fe:34:98:67:09 I was getting a bit excited there for a while. Greg |
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Oldbitcollector Senior Member  Joined: 16/05/2014 Location: United StatesPosts: 172 |
Bought a copy of the December issue to see the article on the $5.00 Webserver. I was disappointed that Geoff didn't grab onto a golden opportunity to promote MMBASIC/Micromite in the article and post a working example in code. Obviously he has it working nicely. @Geoff, is your source code posted anywhere so that we can play with it? My Propeller/Micromite mini-computer project. |
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