####### Example ####### Here are some examples of how to use mraa, common convention is to import mraa as mraa to keep it short but feel free to import it globally! As a general rule the API is very similar to the C++ API so there are only basic examples to show quick usage. The mraa module can be built with python3 or python2. All examples may not run on python3 as this is not tested. Hello GPIO ========== Here is the simplest Gpio program in mraa. .. literalinclude:: ../../../../examples/python/gpio.py :prepend: import mraa :start-after: import mraa GPIO Interrupt (isr) ==================== The GPIO module allows you to set an interrupt on a GPIO. This interrupt is controlled by the mode that the 'edge' is in. Before setting another isr please remove the first one, multiple isrs on one pin are not supported. Some platforms will not support interrupts on all pins so please check your return values. **Note:** Galileo Gen1 only supports EDGE_BOTH .. literalinclude:: ../../../../examples/python/gpio_advanced.py :prepend: import mraa :start-after: import mraa **Note:** If the python script is ended the destructors will run meaning that the ISR will not run. The sleep call is there for that function. **Note:** The python isr module treats only objects. This means that int counters will not work inside your isr. Please use the different edge modes. I2c === The I2c module module has a number of different ways of interacting with the i2c bus, including a number of overloaded read() calls and the writeReg() helper function. .. literalinclude:: ../../../../examples/python/i2c_bmp85.py :prepend: x = m.I2c(0) :start-after: x = m.I2c(0) .. literalinclude:: ../../../../docs/i2c.txt Pwm === The PWM module is rather simple, note that different hardware support PWM generation is various different ways so results may vary. .. literalinclude:: ../../../../examples/python/pwm.py :prepend: import mraa :start-after: import mraa Aio === The ADC is typically provided on a dedicated or shared SPI bus, this is abstracted by the Linux kernel as spidev and abstracted again by mraa. It is fairly simple in use. .. literalinclude:: ../../../../examples/python/aio.py :prepend: import mraa :start-after: import mraa Uart ==== Uart is the Universal asynchronous receiver/transmitter interface in mraa. It allows the exposure of UART pins on supported boards, with basic configuration operations supported. Here's a simple pair of programs comprising a sender and receiver pair. Sender: .. literalinclude:: ../../../../examples/python/uart_sender.py :prepend: import mraa :start-after: import mraa Receiver: .. literalinclude:: ../../../../examples/python/uart_receiver.py :prepend: import mraa :start-after: import mraa LED === LED module is used for controlling the on-board LEDs. With the help of this module, we can control the brightness, trigger etc... .. literalinclude:: ../../../../examples/python/led.py :prepend: import mraa :start-after: import mraa