Py Digilent

This repository contains an object oriented library for Digilent devices. It is written in Python 3 and has typing information. Typing means this library incompatible with earlier python versions.

This library has been developed and tested with the Digilent Analog Discovery 2, however, the library is written to adapt to any digilent device supported by the digilent SDK. Using SDK calls, class properties are generated at runtime based upon the connected hardware.

Formally, only the object model of the AnalogDiscovery2 is supported. Object models for other digilent devices can be created independently in user applications by initialising the required classes. Some work is required to enable AnalogOut functionality and implementations for SPI, UART, and CAN peripherals.

Installation

To run, the package requires the Waveforms SDK to be installed. The SDK comes as part of the Waveforms software installation

Via pip:

pip install pydigilent

The latest version might not be available on pip. Install source to pip by:

1. Download/clone this repository
2. Navigate to the downloaded/cloned repository and open a terminal
3. pip install -e .

Samples

Blinkity blink

from pydigilent import *
import time

ad2 = AnalogDiscovery2()

while True:
    ad2.io.D0.value = not ad2.io.D0.value
    time.sleep(2)

Power control

from pydigilent import *
import time

ad2 = AnalogDiscovery2()
v = 3.5
ad2.power.vplus.enable = 1
ad2.power.vplus.voltage = v

# after configuring power options, the master must be switched to enable
ad2.power.master.enable = 1

ad2.scope.channel1.vertical_division = 1.

while ad2.scope.channel1.voltage < v:
    print(ad2.scope.channel1.voltage)
    time.sleep(.5)

print(ad2.scope.channel1.voltage)

Scope

from pydigilent import *
import time

ad2 = AnalogDiscovery2()

# D0 and D8 are connected to scope channels 1 and 2 respectively
ad2.io.D0.value = 1
ad2.io.D8.value = 1

ad2.scope.channel1.vertical_division = .2
ad2.scope.horizontal_division = .0001
ad2.scope.channel1.offset = 3.
ad2.scope.channel2.offset = 2.5

ad2.scope.acquire()

while not ad2.scope.acquire_complete():
    time.sleep(.1)

# show calls plt.show (displays in a separate window)
ad2.plot(ad2.scope.data, show=True)