JSONmbed.txt

 #include "mbed.h"
 
char Head[] = "{\"module\": \"hogehogehoge\",\"type\": \"channels\",\"datetime\":\"2016-06-01T12:21:11.628907163Z\",\"payload\": {\"channels\": [";
char Ch1Head[] = "{\"channel\":1,\"type\": \"i\",\"value\":";
char Ch2Head[] = "{\"channel\":2,\"type\": \"i\",\"value\":";
char Ch3Head[] = "{\"channel\":3,\"type\": \"f\",\"value\":";
char Ch4Head[] = "{\"channel\":4,\"type\": \"f\",\"value\":";
char JSONCHEND [] = "},";
char JSONSTREND [] = "]}}";
float Soil,Lux,Temp,RH;
int main() {          
Soil = 350.325;// Soil sennsor Analog object
Lux = 580.065;// Lux Sensor Analog object
Temp = 25.735;// Temperature sensor Analog object
RH = 67.525;// Humidity sensor Anlog object

// UART output
   printf("%s%s%.2f%s%s%.2f%s%s%.2f%s%s%.2f%s%s\r\n",Head,Ch1Head,Soil,JSONCHEND,Ch2Head,Lux,JSONCHEND,Ch3Head,Temp,JSONCHEND,Ch4Head,RH,JSONCHEND,JSONSTREND);
 }