1

我试图了解如何使用变量来指定 ADS1115 上的引脚号。通常，人们会通过指定类似这样的内容来读取模拟输入

import board
import busio
import adafruit_ads1x15.ads1115 as ADS
from adafruit_ads1x15.analog_in import AnalogIn

chan0 = AnalogIn(ADS.ADS1115(i2c, address = 0x48), ADS.P0)

我想要做的是为它的“P0”部分使用一个变量。

我可以把它变成一个像

p_object = ADS.P0
chan0 = AnalogIn(ADS.ADS1115(i2c, address = 0x48), p_object)

但是当我开始上课时，这并没有帮助。

这是我正在使用的完整代码。我想用'pin_number'换掉P0，我知道这可能不是一个数字，但它是一个字符串吗？

class Voltage_sensor:
    '''
    Given an ADS1115 address and a corresponding pin number 
    will read voltage values from an AC715
    '''
    def __init__(self, address, pin_number) -> None:
        self.address = int(address)
        self.pin_number = pin_number
        try:
            self.chan = AnalogIn(ADS.ADS1115(i2c, address = self.address), ADS.P0) #<- wanting to replace this with the pin number.
            self.chan = AnalogIn(ADS.ADS1115(i2c, address = self.address), ADS.self.pin_number) # something like this, but this doesn't work
            print(f"Adding ADS1115 at address {hex(self.address)}")

        except:
            print(f"Voltage Sensor not found at {hex(self.address)}")
4

1 回答 1

1

我最终创建了一个大头针字典

self.pins = {'0' : ADS.P0, '1' : ADS.P1, '2' : ADS.P2, '3' : ADS.P3}

然后我只是用一个整数来调用相应的引脚。

于 2022-01-28T02:40:34.657 回答