nonsintetic

/*
 * This sketch illustrates how to set a timer on an SAMD21 based board in Arduino (Feather M0, Arduino Zero should work)
 * It should generate a 1Hz square wave as it is (thanks richdrich for the suggestion)
 * Some more info about Timer Counter works can be found in this article: 
 * http://www.lucadavidian.com/2017/08/08/arduino-m0-pro-il-sistema-di-clock/
 * and in the datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_D21_DA1_Family_DataSheet_DS40001882F.pdf
*/

uint32_t sampleRate = 1000; //sample rate in milliseconds, determines how often TC5_Handler is called