The ECHO command sends a string value from the computer to the Artemis board, and receive an augmented string on the computer and prints it out.
# Read a float GATT Charactersistic
ble.send_command(CMD.ECHO, "HiHello")
The GET_TIME_MILLIS command makes the robot reply write a string such as “T:123456” with the time in milliseconds.
ble.send_command(CMD.GET_TIME_MILLIS, "");
s = ble.receive_string(ble.uuid['RX_STRING'])
print(s)
T:149232