diff --git a/api/maa/i2c.hpp b/api/maa/i2c.hpp index e2dd5c4..eab6268 100644 --- a/api/maa/i2c.hpp +++ b/api/maa/i2c.hpp @@ -108,6 +108,19 @@ class I2c { maa_result_t write(const unsigned char* data, int length) { return maa_i2c_write(m_i2c, data, length); } + + /** + * Write to an i2c register + * + * @param reg Register to write to + * @param data Value to write to register + * @return Result of operation + */ + maa_result_t writeReg(const unsigned char reg, const unsigned char data) { + const unsigned char buf[2] = {reg, data}; + return maa_i2c_write(m_i2c, buf, 2); + } + /** * Write multiple bytes to the bus * diff --git a/examples/python/rgblcd.py b/examples/python/rgblcd.py new file mode 100644 index 0000000..06eab4a --- /dev/null +++ b/examples/python/rgblcd.py @@ -0,0 +1,36 @@ +#!/usr/bin/env python + +# Author: Brendan Le Foll +# Copyright (c) 2014 Intel Corporation. +# +# 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 + +import pymaa as maa + +# This example will change the LCD backlight on the Grove-LCD RGB backlight +# to a nice shade of purple +x = maa.I2c(0) +x.address(0x62) +x.writeReg(0,0) +x.writeReg(1,0) +x.writeReg(0x08,0xAA) +x.writeReg(0x04,255) +x.writeReg(0x02,255) +