SAM L21 microcontroller application in signal acquisiton and processing

U ovome radu zadatak je bio izmjeriti vlastitu potrošnju SAM L21 mikrokontrolera. Da bismo to postigli potrebno je poznavati način rada mikrokontrolera i njegove komponente. Mikrokontroler je kopaktni sklop integriran na čipu. Ima primjene u raznim industrijama. Bazira se na mikroprocesuru u ARM arhitekturi. Osim mikroprocesorea da bi radio mora imati memoriju, sabirnicu, ulazno/izlazne dijelove i još čitav niz komponenti. Mikrokontrolere možemo podijeliti u ovisnosti o arhitekuri, vrsti memorije, setu instrukcija i broju bitova. SAM L21 mikrokontroler je proizvod tvrtke Atmel koji koristi ARM Cortex mikroprocesor. Značajna karakteristika mu je što ima malu potrošnju pa je prikladan za primjene u bežičnim uređajima i uređajima s baterijskim napajanjem. Zbog potrebe za proračunom potrošnje mikrokontrolera, sadrži niz komponenti koje sudjeluju u prikupljanju i obradi signala. Mjerenje potrošnje mikrokontrolera se provodi na SAM L21 XPLAINED pločici koja ima integrirani krug za mjerenje vlastite potrošnje. Pomoću Microchip Studio programa na pločicu se učita kod. Kodovi koji su učitani da bi se izvršilo mjerenje, vezani su za sleep mod mikrokontrolera i sleepwalking mod. Rezultati mjerenja prikazuju se u Data Visualizeru koji dolazi u sklopu Microchip Studio paketa.In this research, the target is to measure the self-consumption of the SAM L21 microcontroller. To accomplish that, it is needed to be familiar with microcontroller functionalities and the way it executes its tasks. A microcontroller (MCU) is compact circuitry integrated on a chip. It has applications in different industries. It is based on a microprocessor in ARM architecture. Besides a microprocessor, there are some more essential components such as memory, bus, I/O peripherals, etc. Microcontrollers can be sorted into a few categories according to architecture, memory type, instruction set, and bit configuration. SAM L21 MCU is built by the Atmel company. It uses the ARM Cortex microprocessor. The main characteristic of that MCU series is low power consumption so it is commonly used in wireless devices and devices with battery supplies. Because of the need for power consumption measurement MCU has several components used in signal acquisition and processing. Power consumption measurement is done with help of the SAM L21 XPLAINED PRO developer kit which has implemented SAM L21 MCU and current measurement header. Microchip Studio software is used to install a specific project on the board. Projects are based on MCU operation in sleep mode and sleepwalking mode. Measurement results are shown in Data Visualizer which is implemented in Microchip Studio. AM L21 microcontroller application in signal acquisiton and processin