Programmable ECG Signal Generator

Ovaj završni rad opisuje izradu programabilnog generatora EKG signala pomoću STM32F4 porodice mikrokontrolera. Mikrokontroler koristi svoju RAM memoriju u kojoj su spremljeni uzorci EKG signala u digitalnom obliku, preuzetih sa PhysioNet web platforme. DMA prenosi te podatke iz RAM-a do DAC-a koji vrši digitalno analognu konverziju te šalje te podatke na GPIO izlaz odakle se ti signali mogu mjeriti. Cijelim procesom upravlja brojač mikrokontrolera. Generator opisan u ovom završnom radu nudi mogućnost prikaza četiri različita EKG signala. Signali se biraju pomoću GUI-a u MATLABU, koji nakon odabira naredbu šalje mikrokontroleru putem USART-a koji prepoznaje naredbu te ovisno o njoj počinje generirati odgovarajući signal.This bachelor dissertation describes implementation of programmable ECG signal generator using STM32F4 family of microcontrollers. ECG signal database is downloaded from PhysioNet webpage using Physiotoolkit with Cygwin environment. ECG signal data is stored in microcontroller's RAM. DMA transfers that data from RAM to DAC. Data is then converted from digital to analogue and it is being sent to GPIO output pin. Data is suitable for measurement and analysis on GPIO pins. CPU is in charge of whole process. This generator offers representation of four different ECG signals. User can choose between signals using GUI in MATLAB. GUI sends command to microcontroller through USART. Microprocessor starts signal generation depending on that command