Provide data from .c file to .py file VS Code - matplotlib.pyplot

[ChrtistophAT]

Hello,

I got saadc example on my nrf5340 dk running and now I would like to plot the incoming serial data.

saadc code example: saadc.zip

changed the way I got adviced in nrfx_saadc - buildconf. error PPI_CHEN / DPPIC_CHEN  / nrfx_saadc---buildconf-error-ppi_chen-dppic_chen

My approach is using matplotlib from python and already got code running and some plot in real time.

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#https://code.visualstudio.com/docs/python/python-tutorial

#https://learn.sparkfun.com/tutorials/graph-sensor-data-with-python-and-matplotlib/update-a-graph-in-real-time

import datetime as dt

import matplotlib.pyplot as plt

import matplotlib.animation as animation

import numpy as np

# Create figure for plotting

fig = plt.figure()

ax = fig.add_subplot(1, 1, 1)

xs = []

ys = []

# This function is called periodically from FuncAnimation

def animate(i, xs, ys):

# Add x and y to lists

xs.append(dt.datetime.now().strftime('%H:%M:%S.%f'))

ys.append(20) #straightforward plotting value 20

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

#https://code.visualstudio.com/docs/python/python-tutorial
#https://learn.sparkfun.com/tutorials/graph-sensor-data-with-python-and-matplotlib/update-a-graph-in-real-time

import datetime as dt
import matplotlib.pyplot as plt
import matplotlib.animation as animation
import numpy as np

# Create figure for plotting
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
xs = []
ys = []

# This function is called periodically from FuncAnimation
def animate(i, xs, ys):

    # Add x and y to lists
    xs.append(dt.datetime.now().strftime('%H:%M:%S.%f'))
    ys.append(20)       #straightforward plotting value 20

    # Limit x and y lists to 20 items
    xs = xs[-20:]
    ys = ys[-20:]

    # Draw x and y lists
    ax.clear()
    ax.plot(xs, ys)

    # Format plot
    plt.xticks(rotation=45, ha='right')
    plt.subplots_adjust(bottom=0.30)
    plt.title('Graph in real time')
    plt.ylabel('int')

# Set up plot to call animate() function periodically
ani = animation.FuncAnimation(fig, animate, fargs=(xs, ys), interval=100)
plt.show()

Now I am plotting value 20 all the time and would appreciate any help how to get the ADC value from main.c to python file for plotting task. Is it even possible or any workaround?

Many many thanks in advance,

Christoph