Can't update ThingSpeak field via AT commands to ESP8266

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Richard Stallard
Richard Stallard 2022-3-18
评论： Christopher Stapels 2022-3-21
I am working towards sending data from a Picaxe using AT commands via ESP8266, based on an example from 2015 here: https://www.allaboutcircuits.com/projects/connect-a-picaxe-to-the-internet-of-things/
At this stage, I am sending the AT commands to the ESP8266 from a terminal program (Termite), so the Picaxe board is not playing an active part other than providing 3.3V for the ESP-01S module.
However, the GET command is not working and there are no updates to ThingSpeak.
I can send the same update string from a browser and the data does appear in ThingSpeak, so the key and field number are correct. This is the update URL which works:
https://api.thingspeak.com/update?key=XXXXXXXXXXXXXXXX&field2=123
I understand there is a ThingSpeak library for Arduino which would simplify the process but, for various reasons, I prefer Picaxe at the moment.
Are updates via GET still supported?
Have there been any recent changes to the format which affect the data string?
I assume the byte count requires addition of 2 to account for the CR+LF sent from the terminal program but I have also tried with byte count reduced by 2 with no change in the result.
Here is the log from Termite:
AT
OK
AT+CIPSTART="TCP","thingspeak.com",80
AT+CIPSTART="TCP","thingspeak.com",80
CONNECT
OK
AT+CIPSEND=45
AT+CIPSEND=45
OK
> GET /update?key=XXXXXXXXXXXXXXXX&field1=123
Recv 45 bytes
SEND OK
+IPD,69:HTTP/1.1 408 REQUEST_TIMEOUT
Content-Length:0
Connection: Close
CLOSED

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采纳的回答

Richard Stallard
Richard Stallard 2022-3-18
Problem solved!
The web address needed "api" at the beginning.
AT+CIPSTART="TCP","api.thingspeak.com",80

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