ejung/xmega-modbus-pt100
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testing

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This commit is contained in:
Eggert Jung
2021-01-26 10:52:19 +01:00
parent 3cb3e52790
commit c85b45caea
1 changed files with 25 additions and 24 deletions
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49
plot.py
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@@ -1,5 +1,3 @@
# python_live_plot.py
import time import time
from simple_pid import PID from simple_pid import PID
from itertools import count from itertools import count
@@ -11,10 +9,10 @@ import minimalmodbus
tempSens = minimalmodbus.Instrument('/dev/ttyUSB1', 1) tempSens = minimalmodbus.Instrument('/dev/ttyUSB1', 1)
tempSens.serial.baudrate = 38400 tempSens.serial.baudrate = 38400
OutputDriver = minimalmodbus.Instrument('/dev/ttyUSB1', 2) OutputDriver = minimalmodbus.Instrument('/dev/ttyUSB1', 1)
OutputDriver.serial.baudrate = 38400 OutputDriver.serial.baudrate = 38400
pid = PID(1, 0.01, 0, setpoint=60) pid = PID(10, 0.01, 0.1, setpoint=100)
plt.style.use('fivethirtyeight') plt.style.use('fivethirtyeight')
@@ -26,32 +24,35 @@ index = count()
def animate(i): def animate(i):
try: try:
temp = tempSens.read_float(1) temp = tempSens.read_float(1, functioncode=4, byteorder=0)
y_values.append(temp) y_values.append(temp)
x_values.append(next(index)) x_values.append(next(index))
#print(temp)
print(tempSens.read_float(11, functioncode=4, byteorder=0))
print(temp, end='\t') # print(temp, end='\t')
control = pid(temp) # control = pid(temp)
if(control>100): # if(control>100):
control = 100; # control = 100;
control = (control/1000.0) # control = (control/1000.0)
print(control, end='\t') # if(control < 0):
print(0.1-control) # control = 0
# print(control, end='\t')
if(control > 0): # print(0.1-control)
OutputDriver.write_bit(0, 1, functioncode=15) #
# if(control > 0):
time.sleep(control) # OutputDriver.write_bit(0, 1, functioncode=15)
#
if(control<0.1): # time.sleep(control)
OutputDriver.write_bit(0, 0, functioncode=15) #
# if(control<0.1):
time.sleep(0.1-control) # OutputDriver.write_bit(0, 0, functioncode=15)
#
# time.sleep(0.1-control)
plt.cla() plt.cla()
plt.scatter(x_values, y_values) plt.scatter(x_values, y_values)
except: except Exception as e: print(e)
pass
ani = FuncAnimation(plt.gcf(), animate, 2000) ani = FuncAnimation(plt.gcf(), animate, 2000)