I am using VirtualWire library (http://www.open.com.au/mikem/arduino/VirtualWire.pdf) and RF transmitter/reciver to communicate between two arduinos.
There is function in this library to send data: vw_send((uint8_t *)msg, strlen(msg));
I need to send data like this:
string timestamp; float voltage; float current; float power;
DataToSend = timestamp + "," + voltage + "," + current + "," + power; for example: "2012.10.13, 4.59, 0.36, 1.65";
Is there any solution for this problem?