I am using a DFplayer mini module and I want to read the value of the volume. This page: DFPlayer_Mini_SKU_DFR0299-DFRobot shows that the command code for querying the volume is
0x43. However when I send that command to the DFplayer I don't get anything on the RX (but somehow there are 10 bytes to be read when doing
available() on the DFplayer's serial port). The 10 bytes are present no matter if I query the volume or not. How do I read the volume of the DFplayer?