I connect Arduino and IMP through UART, and Arduino send sensors data to IMP by UART interface.
Arduino - Serial1.write();
IMP - uart.read();
the question is How to send the float data and number over 255 from Arduino to IMP correctly?
Serial1.write(0.27); => uart.read = 0; expect to get 0.27
Serial1.write(263); => uart.read = 7; expect to get 263