DAC-Piano

Created DAC Using R-2R Ladder Circuit To Implement Piano in TM4C. This project was done as the part of Embedded Systems course.

Components Used

Constructed R-2R Ladder Design for 8-bits in Tivac Board using resistors, wire connectors, and connected Multimeter and in the R-2R Ladder.
The 8-bit binary value is assigned to 8 ports of Port B
GPIO Ports (E and F) are initialized as digital pins and set to input mode.
Unlock PORT E and F and disable the analog function. We also clear the PCTL register for Ports E and F.
Configured the Tiva C board pin connections for resistors in the R-2R ladder (port B pins).
Each button corresponds with a different keynote and has a frequency index for each button.
By reading the corresponding PORTS (Port E and F) , the button pressed is found.
Pushbutton signals are sent to Tiva C pin connections ( VCC, GND, taking output signal from push buttons when pressed and feeding the input to Tiva C - 4 port E and 4 port F GPIO pins).
Binary input values (corresponding frequencies of piano notes) are sent from Tiva C to corresponding R-2R Ladder resistors in the circuit.
GPIO PE0-PE3 and PF0-PF3 ports are set from Tiva C to R-2R ladder DAC to Piezo to play the specific frequency.
GPIO Port B in range of PB0-PB7 Pin is read from R-2R Ladder to corresponding Tiva C Button Connected GPIO Port ranging from PE0-PE3 and PF0-PF3 Port.
Sine Waves are generated by setting frequency for 8 Basic notes in music to get through DAC R-2R Ladder.