fake-rpi 0.1.1

Install

The preferred way to install this is:

pip install fake_rpi

Development

To submit pull requests and do development:

git clone
cd fake_rpi
pip install -e .

Usage

To use as is:

from fake_rpi import GPIO as io
from fake_rpi import smbus
from fake_rpi import toggle_print

# by default it prints everything to std.error
toggle_print(False)  # turn on/off printing

io.setmode(io.BCM)
b = io.input(21)

sm = smbus.SMBus(1)
b = sm.read_byte_data(0x21, 0x32)  # read in a byte

But I need smbus to return a specific byte for unit testing! Ok, then create a child of my smbus like below and modify only the methods you need changed:

from fake_rpi import smbus
from fake_rpi import printf

class MyBus(smbus.SMBus):
        @printf
        def read_byte_data(self, i2c_addr, register):
                ret = 0xff
                if i2c_addr == 0x21:
                        ret = 0x55
                elif i2c_addr == 0x25:
                        ret = 0x11
                return ret

sm = MyBus()
b = sm.read_byte_data(0x21, 0x32)  # read in a byte

kevin@Logan fake_rpi $ ./example.py
<<< WARNING: using fake raspberry pi interfaces >>>

kevin@Logan fake_rpi $ ./example.py
<<< WARNING: using fake raspberry pi interfaces >>>
fake_rpi.RPi.PWM.__init__()
fake_rpi.RPi.PWM.start(5,)
fake_rpi.smbus.SMBus.__init__(1,)
fake_rpi.smbus.SMBus.write_byte_data(1, 2, 3)
fake_rpi.smbus.SMBus.read_byte_data(1, 2): 21
fake_rpi.smbus.SMBus.close()
__main__.MyBus.__init__()
__main__.MyBus.read_byte_data(1, 2): 72
__main__.MyBus.read_i2c_block_data(1, 2, 3): [90, 90, 90]

ToDo

• add serial

• double check interfaces and flush them out better

Change Log

MIT License

Copyright (c) 2017 Kevin J. Walchko

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.