add motor class

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Konstantin Lampalzer 2021-01-15 18:22:50 +01:00
parent 5942c13721
commit b5a60438c0
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16 changed files with 438 additions and 100 deletions

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@ -1,94 +0,0 @@
import smbus
import time
class Adc:
def __init__(self):
# Get I2C bus
self.bus = smbus.SMBus(1)
# I2C address of the device
self.ADDRESS = 0x48
# PCF8591 Command
self.PCF8591_CMD = 0x40 # Command
# ADS7830 Command
self.ADS7830_CMD = 0x84 # Single-Ended Inputs
for i in range(3):
aa = self.bus.read_byte_data(self.ADDRESS, 0xf4)
if aa < 150:
self.Index = "PCF8591"
else:
self.Index = "ADS7830"
def analogReadPCF8591(self, chn): # PCF8591 read ADC value,chn:0,1,2,3
value = [0, 0, 0, 0, 0, 0, 0, 0, 0]
for i in range(9):
value[i] = self.bus.read_byte_data(self.ADDRESS, self.PCF8591_CMD + chn)
value = sorted(value)
return value[4]
# TODO: bug in original code???
#def analogWritePCF8591(self, value): # PCF8591 write DAC value
# self.bus.write_byte_data(self.ADDRESS, cmd, value)
def recvPCF8591(self, channel): # PCF8591 write DAC value
while (1):
value1 = self.analogReadPCF8591(channel) # read the ADC value of channel 0,1,2,
value2 = self.analogReadPCF8591(channel)
if value1 == value2:
break;
voltage = value1 / 256.0 * 3.3 # calculate the voltage value
voltage = round(voltage, 2)
return voltage
def recvADS7830(self, channel):
"""Select the Command data from the given provided value above"""
COMMAND_SET = self.ADS7830_CMD | ((((channel << 2) | (channel >> 1)) & 0x07) << 4)
self.bus.write_byte(self.ADDRESS, COMMAND_SET)
while (1):
value1 = self.bus.read_byte(self.ADDRESS)
value2 = self.bus.read_byte(self.ADDRESS)
if value1 == value2:
break;
voltage = value1 / 255.0 * 3.3 # calculate the voltage value
voltage = round(voltage, 2)
return voltage
def recvADC(self, channel):
if self.Index == "PCF8591":
data = self.recvPCF8591(channel)
elif self.Index == "ADS7830":
data = self.recvADS7830(channel)
return data
def i2cClose(self):
self.bus.close()
def loop():
adc = Adc()
while True:
Left_IDR = adc.recvADC(0)
print(Left_IDR)
Right_IDR = adc.recvADC(1)
print(Right_IDR)
Power = adc.recvADC(2) * 3
print(Power)
time.sleep(1)
print('----')
def destroy():
pass
# Main program logic follows:
if __name__ == '__main__':
print('Program is starting ... ')
try:
loop()
except KeyboardInterrupt: # When 'Ctrl+C' is pressed, the child program destroy() will be executed.
destroy()