serializeMsgPack for unsigned char (uint8_t)

Created by: Piruthivi

Hi, Am new to json format data and c++ too. I found it amusing, it is very easy to build a json when started to json generator example. And it is simple to use. Now lets see what my doubt is.

By using ArduinoJson library i can serializeJson to a character array and to a uart port like Serial1 or SerialUSB. Similarly same can be done with serializeMsgPack. Now the tricky part is i need to use unsigned char for serialize message pack. I did saw a "Custom Writer" could be a solution, but didnt have a clue to use it. Does it need to be added in the library files or in the program(.ino) files i have been using.

If i call serializeMsgPack(doc,(uint8_t) data) getting following error

_In member function 'size_t CustomWriter::write(uint8_t)':

abputilitypacket:22:9: error: request for member 'append' in '((CustomWriter*)this)->CustomWriter::str', which is of non-class type 'uint8_t {aka unsigned char}'

 str.append(1, static_cast<char>(c));

     ^_

If i could solve this i can move forward in my project. And thanks in advance.