ArduinoJson Serializer
Hi,
I would like to use ArduinoJson to serialize my sensor data before publishing it via mqtt. Unfortunatlex it seems like ArduinoJson and the D21G board package are not compatible?
Is there a way of making them compatible?
Help is highly appreciated!
Error message:
Arduino: 1.8.19 (Windows Store 1.8.57.0) (Windows 10), Board: "Industruino D21G"
In file included from C:\...\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Numbers/FloatTraits.hpp:13:0, C:\...\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Numbers/convertNumber.hpp:15,
....
C:\....\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Polyfills/pgmspace_generic.hpp: In instantiation of 'const T* ArduinoJson::V704PB2::detail::pgm_read(const T* const*) [with T = char]':
C:\....\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Deserialization/DeserializationError.hpp:85:42: required from here
C:\....\Documents\Arduino\libraries\ArduinoJson\src/ArduinoJson/Polyfills/pgmspace_generic.hpp:25:52: error: 'const void*' is not a pointer-to-object type
return reinterpret_cast<const T*>(pgm_read_ptr(p)); ^
exit status 1
Error compiling for board Industruino D21G.
Apperently this is not an Industruino specific error but a SAMD21 specific error.
The solution is this:
#define ARDUINOJSON_ENABLE_PROGMEM 0
#include <ArduinoJson.h>
Hope this will save somebody else some time saerching.
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| Asked: 4/29/24, 10:52 AM |
| Seen: 488 times |
| Last updated: 4/29/24, 2:18 PM |