Difference between revisions of "STM32 Oscilloscope"

Revision as of 18:45, 9 May 2010

Features

Vertical (voltage)

Horizontal (Time)

Trigger

• Voltage level trigger
• Trigger on rising / falling edge
• Single trigger / force trigger / trigger continiously
• Auto detect and track trigger level
• External trigger
• Pretrigger (sample continiously then stop n samples after the trigger)
• Filtered trigger (low frequency / high frequency / number of pulses)
• Video trigger
• RS-232 trigger

Dynamically labelled grid

Auto Scale

• Voltage
• Period

Markers

• Voltage
• t1
• t2
• delta t
• frequency

Metered values

• Voltage
• True RMS
• Average
• Peak
• Peak to peak
• Frequency
• Duty

Save wave snapshot to picture

Save wave frames for movie

Save wave data to file

Save non interrupted wave data to file

Display roll mode (continuous scrolling)

• BPM mode for heart rate monitoring
• wide range of scroll rates
• dynamically zoom in to check on activity of extremely slow rates

Fourier transform

• Spectrum
• Average spectrum
• Subtract average
• Spectrogram

Pause and scroll back

Protocol decoding

• RS232
• TTL RS232
• IR remotes

DSP

• Pre-scale before process
• Add channels
• Subtract channels
• Multiply channels
• AM demod
• FM demod
• Configurable bandpass filtering

Coding

Protocol

One byte each:
C SS DDD...
C = Code
S = Size
D = Data

Commands --> STM32

• 0 0 4 DDDD - Set sample rate in Hz
• 1 0 5 D DDDD - Trigger mode & voltage

Advanced features for the future