Two years ago I published post about Remote controller with PCA9535. This device was not without some disadvantages, of course. Some of them: not accurate board outline, IQRF module orientation, through-hole push buttons. Now I have finished new version with some improvements, which replaces disadvantages mentioned above.
If you are not daily user of IQRF modules, probably you often find that you have to look into reference manual for correct function names and parameters. If you want to simplify work with IQRF OS functions, this article is just for you. This post describes how to install IQRF syntax highlight and auto-completion into Notepad ++ (from 6.6.6 version).
In this article you can read about working with RGB LED diode. You can display 8 colors using one LED diode. LED is connected by 3 pins to MCU for control color and by 1 pin is connected to MCU via transistor to regulate brightness (see scheme). Regulation of brightness is performed by PWM.
Try to group order of access to the variables from the same memory bank to the adjacent statements. This will eliminate redundant MOVLB instructions.
Original code
uns8 savedTX;
...
RTHOPS = 0xFF; // @bank5 !=
TX = savedTX; // @bank11 != @bank5 ==
RTDEF = 2; // @bank5
I like TR-52D modules, but I was disappointed of their DAC capabilities inherited from used MCU. Fortunately we have several ways, how to fix this issue. One of them is AS1500 digital potentiometer usage. It is very simple (from programming view) device and not so expensive. Following example is only draft. For fully functional circuit, some additional hardware is required.
We described simple method, how to drive modellers servo. Today, we are going to try to drive this servo from potentiometer connected to TR module ADC. It is reaction to forum thread where is discussion about airplane model control possibility. Continue reading
Today, I focussed on another example from IQRF Startup package – Servo control. You will find this example inside Advanced examples of Startup package. You can use this user code together with ADC example described earlier and make automatic wireless control device.
Maybe some of you read post Morse code for IQRF. Now, we are going to show, how to do simple bidirectional wireless telegraph within a few seconds. You need only some motherboard for IQRF TR module with assembled button, for example DK-EVAL-04 or CK-USB-04.
Sometimes, you need to measure analog signal and then switch something on or off according to the result. This short example shows, how to do it. Everything you need is DDC-SE-01 module as a sensor module and DDC-RE-01 as relay module. Of course you need DK-EVAL-04 or CK-USB-04 for both of them as a master module.
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