Reply To: Problem with ElecFreaks MP3 Shield (Seeeduino compatible)

[Michael P. Flaga]

Note that Seeduino MP3’s DREQ pin is not connected to a Arduino Pin that support’s Interrupts. Hence the Error that MP3_DREQINT was undefined, as there is nothing to point it to on the Seeduino MP3 shield.

This is denoted in the support documentation

So the work around is to configure SFEMP3ShieldConfig.h’s line 195 the refill method to use something other than USE_MP3_INTx.

to
#define USE_MP3_REFILL_MEANS USE_MP3_Polled
Then it will compile.