Python mmio package for Carambola2. With this module you can access all internal registers. You can do some magic with this tool, but it's very easy to do something very wrong if you don't know what are you doing. Be warned!

• You need to have carambola2 build environment installed and precompilled prior to building this package
• You might need to edit Makefile first line to meet your environment

CROSS_COMPILE = ~/carambola2/staging_dir/toolchain-mips_r2_gcc-4.7-linaro_uClibc-0.9.33.2/bin/mips-openwrt-linux-

Also some packages should be selected from

make menuconfig

• Languages
  • Pyton
    • python
    • python-mini

Build python package

make python

Build test program - main()

make test

Note: you need wget with SSL support

cd /tmp/py_mmio
rm mmio.py
rm _mmio.so
wget https://github.com/8devices/py_mmio/raw/master/src/mmio.py
wget https://github.com/8devices/py_mmio/raw/master/src/_mmio.so
wget https://github.com/8devices/py_mmio/raw/master/tests/blink_gpio18.py
python blink_gpio18.py

• C main() freq = 7.6 MHz NOTE: my logic analyzer is not fast enough to capture waveform

• C main(), usleep(10) freq = 7.13 KHz

• Python slow example freq = 4 Khz

• Python fast example freq = 26 kHz

Read current values:

io -4 -r 0x18040000 -- 18040000:  00006cff
io -4 -r 0x1804000C -- 1804000c:  00002605
io -4 -r 0x18040010 -- 18040010:  00002605

Toggle led:

io -4  0x18040000 0x00046cff -- setup out
io -4  0x1804000C 0x00042605 -- set
io -4  0x18040010 0x00042605 -- clr

import gpio

register = gpio.read(18)
print "Read: 0x%08X" % register

gpio.write(18, 1)