Introduction

This example uses the DAC to generate a sine wave on the DAC output.

The example does the below

Configures Timer to generate interrupt at a rate of 20KHz.
Increments an angle alpha from 0 to 360 based on the output sine wave frequency required.
Configures the sine of alpha in the DAC Shadow register within the ISR.
This repeated programming of the registers generates a sine wave.

External Connections

DAC output pin can be connected to an oscilloscope to view the sine wave output.

AM263X-CC

Note: To use the reference voltage generated on ControlCard, make sure that the System VREF source select switch SW8 on ControlCard is set to position 1-2

When using AM263x-CC with TMDSHSECDOCK (HSEC180 controlCARD Baseboard Docking Station)

Capture waveform on HSEC Pin 9

AM263X-LP

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 nortos
Toolchain	ti-arm-clang
Board	am263x-cc, am263x-lp
Example folder	examples/drivers/dac/dac_sine_wave/

Steps to Run the Example

When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
Establish connections as mentioned in External Connections section
Launch a CCS debug session and run the executable, see CCS Launch, Load and Run
Use an Oscilloscope to view the sine wave on DAC output pin.

Sample Output

Shown below is a sample output when the application is run,

DAC Sine Wave Test Started ...
DAC Sine Wave Test Passed!!
All tests have passed!!

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