Square wave Programming| Square wave Generation | Pulse Generation | DAC Programming
Square wave generation using a Digital-to-Analog Converter (DAC) is achieved by alternating the digital input between maximum (e.g., 0xFF for 8-bit) and minimum 0x00)) values with specific time delays. This toggling produces a repeating 0V to maximum voltage analog output, creating a square wave. Frequency is controlled by adjusting the delay, while amplitude depends on the reference voltage, often viewed on an oscilloscope.
Core Implementation Steps
Initialization: Configure the DAC peripheral and the associated GPIO pin as an analog output.
Level Toggling: Write the maximum digital value (e.g., 255 for 8-bit or 4095 for 12-bit) to the DAC register for the "High" state and a minimum value (usually 0) for the "Low" state.
Timing Control: Introduce a specific delay between these writes using a timer, interrupt, or software delay loop to set the frequency.
Repetition: Place the toggling logic in an infinite loop to maintain a continuous waveform.
Chapters:-
00:00 Introduction
00:54 DAC Introduction
01:47 Square and Rectangular wave
03:07 Pin function selection for Analog Output
04:46 DAC Convert register
06:28 Code for Square wave
09:11 Output Validation for Square wave
11:05 Rectangular wave Generation
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