support CHIP_IO (Next Thing C.H.I.P.)

Type of Raspberry Pi

Next Thing C.H.I.P.

Linux Kernel version

Linux compy386 4.4.13-ntc-mlc #1 SMP Tue Dec 6 21:38:00 UTC 2016 armv7l GNU/Linux

Expected behaviour

Would love to see support for CHIP_IO, the C.H.I.P. version of RPi.GPIO 😃 I bet it would be just a few lines in lib.py and serial.py. (I will try this out myself but I am pretty noob.)

Actual behaviour

Traceback (most recent call last):
  File "st7735.py", line 14, in <module>
    serial = spi(port=0, device=0, bcm_DC=23, bcm_RST=24)
  File "/usr/local/lib/python2.7/dist-packages/luma/core/serial.py", line 163, in __init__
    self._gpio = gpio or self.__rpi_gpio__()
  File "/usr/local/lib/python2.7/dist-packages/luma/core/lib.py", line 23, in __rpi_gpio__
    import RPi.GPIO
ImportError: No module named RPi.GPIO

[combs]

Ha, yeah, just changing two lines in lib.py got me up and running—

    try:
         import CHIP_IO.GPIO
         return CHIP_IO.GPIO
#        import RPi.GPIO
#        return RPi.GPIO

(and using appropriate pins: serial = spi(port=32766, device=0, bcm_DC="CSID1", bcm_RST="CSID0")

[combs]

Hee hee, okay, that explains a lot 😄

oof,

#### iter =    651: render time = 103.80 ms, frame rate = 9.63 FPS

(cpu is still about 30% idle, interestingly)