ESP8266 Community Forum

- Wed May 25, 2016 12:42 am #47984 Hi everybody!
I want to connect the ESP - 01 to a webapi server, which sends data, which contains different information, dynamically in JSON. I want this information to be displayed on the LCD connected to the ESP. I do not know how to decode the JSON data. The server address is 192.168.1.8:8057/api.

OK. I try this:

Code: Select allsk=net.createConnection(net.TCP, 0)
sk:on("receive", function(sck, c)
d = c
end )
sk:connect(8095,"192.168.1.8")
sk:send("GET /api/ HTTP/1.1\r\nHost: 192.168.1.8\r\nConnection: keep-alive\r\nAccept: */*\r\n\r\n")

print(d)


and it display result:

{"lowVersion":1,"highVersion":3}

If I try:

Code: Select allsk=net.createConnection(net.TCP, 0)
sk:on("receive", function(sck, c)
d = c
end )
sk:connect(8095,"192.168.1.8")
sk:send("GET /api/ HTTP/1.1\r\nHost: 192.168.1.8\r\nConnection: keep-alive\r\nAccept: */*\r\n\r\n")

local t = cjson.decode(d)
print(t.lowVersion)

is display:

test.lua:10: Expected value but found invalid token at character 1
How to display the value "lowVersion" or "highVersion" from JSON?

- Wed Jun 22, 2016 2:14 pm #49620 Here's the same question, and an answer, on StackOverflow: http://stackoverflow.com/q/37395384/131929

https://frightanic.com/
https://nodemcu-build.com/
https://github.com/marcelstoer/nodemcu-pyflasher