- Labs project
Sine generation by an IIR filter approach on low-cost 8 bit MCU's
April 15, 2013
This project describes the generation of sine waves by a simple recursive digital filter in a way that only 8 bit shift/add/subtraction operations, two permanently occupied 8 bit registers and no data tables are required, therefore permitting the usage of low-cost micro-controllers without multiplication units and little storage capacity. It contains the complete theory of this approach, the finding of suitable parameters under the constraint of 8 bit operations plus substitution of multiplications by shift operations and an example implementation on an ATtiny45 MCU.
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- ATtiny.zip (5.56 KB )Source code
- IIRSinus.pdf_.zip (2.32 MB )Publication (german)
- IIRSinus_en.pdf_.zip (4.78 MB )Publication (english)