Installing

Stable library from PyPi:

• Just run pip install pimcp3008

PiMcp3008's Methods

Constructor(config={})

'config' is dictionary type.

'channel'

Configure SPI chip selects of Raspberry Pi.

• Channel.CE0.value
  • CE0 is used for MCP3008
  • Default
• Channel.CE1.value
  • CE1 is used for MCP3008
• Channel.CE2.value
  • CE2 is used for MCP3008
  • Only Auxiliary Mode

'clock'

Configure SPI clock of Raspberry Pi.

• Integer value
  • Default: 1000000

'device'

Configure MCP3008 compatible devices.

• Device.MCP3008.value
  • Use MCP3008
  • Default
• Device.MCP3004.value
  • Use MCP3004

read(channels)

Read A/D convert value. Argument channels that enumerate integer value is valiable length. Return value has include selected channel's value.

• MCP3008: 0 to 7
• MCP3004: 0 to 3

If argument channels is not exist, return value has include all channel's value.

Return value is dictionary type. Key is channels value that type is int. Value is integer value.

Sample

Run sudo pigpiod before running the sample.

Simple

.. code-block:: shell

# -*- coding: utf-8 -*-
import pimpc3008 as MPC3008
import time

obj = MPC3008.PiMpc3008()

try:
    while True:
        values = obj.read()
        print(values)
        time.sleep(10)
except KeyboardInterrupt:
    pass

Modify config

'clock' is 100kHz.

.. code-block:: shell

# -*- coding: utf-8 -*-
import pimpc3008 as MPC3008
import time

config = {
    'clock' : 100000
}

# pigpioを初期化する
obj = MPC3008.PiMpc3008(config)

try:
    while True:
        values = obj.read()
        print(values)
        time.sleep(10)
except KeyboardInterrupt:
    # Ctrl + C で終了する
    pass

Select Channel

Get 0ch, 2ch and 4ch values.

.. code-block:: shell

# -*- coding: utf-8 -*-
import pimpc3008 as MPC3008
import time

obj = MPC3008.PiMpc3008()

try:
    while True:
        values = obj.read(0, 2, 4)
        print(values)
        time.sleep(10)
except KeyboardInterrupt:
    pass