ESP8266 Community Forum

Posted: **Sun Dec 07, 2014 5:36 pm**

I'm just starting to get my hands dirty with the new RTOS SDK that Espressif publish on github a few days ago. Has anyone tried using the included cJSON library with this SDK?

I've added "#include "json/cjson.h" to the top of user_main.c file, and added just this one line of code:

Code: Select allcJSON * rcvd_json = cJSON_Parse(recv_buf);

However when I compile I get: "undefined reference to cJSON_Parse"

Anyone have any tips on what I am forgetting to do to make this compile successfully? Any hints would be very much appreciated.
Thanks.
-Jonathan

Posted: **Mon Dec 08, 2014 1:12 am**

maybe alonewolfx2 tip help You:
viewtopic.php?f=9&t=584&p=4124&hilit=json#p4112

Posted: **Mon Dec 08, 2014 2:08 am**

Thanks for the link!

it's true that adding the json library to the makefile solved the problem. I added

Code: Select all-ljson \

to the linkflags in the makefile in the app directory (beginning on line 61 with "LINKFLAGS_eagle.app.v6 "... ) and then was able to successfully compile.

ESP8266 Community Forum

Using cJSON with Espressif's esp_iot_rtos_sdk

Using cJSON with Espressif's esp_iot_rtos_sdk

Re: Using cJSON with Espressif's esp_iot_rtos_sdk

Re: Using cJSON with Espressif's esp_iot_rtos_sdk