Avr microcontroller for direct modulation via PWM port the code to play music, the music data is stored in an array eeprom, you can modify according to the conditions, with the reference value.

play
....\BACKUP
....\......\main.c.151219210634
....\......\main.c.151219210736
....\......\main.c.151219210842
....\......\main.c.151219210954
....\......\main.c.151219211110
....\......\main.c.151219212500
....\......\main.c.151219212524
....\......\main.c.151219212732
....\......\main.c.151219212902
....\......\main.c.151219212916
....\......\main.c.151219213018
....\......\main.c.151219213024
....\......\main.c.151219213324
....\......\main.c.151219213340
....\......\main.c.151219213644
....\......\main.c.151219213734
....\......\main._c
....\main.c
....\main.lis
....\main.o
....\PLAY.cof
....\PLAY.dbg
....\PLAY.hex
....\PLAY.lk
....\PLAY.lst
....\PLAY.mak
....\PLAY.mp
....\play.prj
....\PLAY.SRC

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