Watchdog is a very necessary module for embedded system. Someone said that embedded system operates without watchdog enabled just like the car without air bag. You should always enabled watchdog as possible as you can. The PIC32MZ Watchdog Timer (WDT…

The microcontroller is PIC32MZ2048ECH144 on the PIC32MZ EC Starter Kit. This microcontroller has four 32-bit synchronous timers are available by combining Timer2 with Timer3, Timer4 with Timer5, Timer6 with Timer7, and Timer8 with Timer9. The 32-bit…

Core Timer is a very popular feature of PIC32 since it is a piece of the MIPS M4K core itself and is common to all MIPS processors. Most RTOS's timer are based on core timer. This timer has a fixed prescaler 1:2, and it is a 32-bit timer, no need to…

In my previous blog "PIC32MZ tutorial -- Output Compare", I shows how to apply Output Compare without interrupt to generate PWM signal. I also tried the Output Compare interrupt. I selected OC to be PWM mode without fault pin (OCM = "110&qu…

In my older blog "PIC32MZ tutorial -- Key Debounce", I shows how to acheive key debounce with port polling. At this moment, I write an application which uses External Interrupt.  Therefore, only generates interrupt and starts debounce when the f…

Output Compare is a powerful feature of embedded world. The PIC32 Output Compare module compares the values stored in the OCxR and/or the OCxRS registers to the value in the selected timer. When a match occurs, the Output Compare module generates an…

Today I implement "Hello World" on PIC32MZ EC starter kit. The application of "Hello World" only lights up a LED. There are three LEDs on the starter kit board -- LED1 and LED2 and LED3.  At the moment, I only light LED1 on RH0. Every…

An interrupt is an internal or external event that requires quick attention from the controller. The PIC32MZ architecture provides a rich interrupt system that can manage up to 190 sources of interrupts. Each interrupt source can have a unique piece…

Today I accomplish a simple application for PIC32MZ EC Starter Kit. This application uses Input Capture feature of PIC32MZ. The Input Capture module captures the 32-bit value of the selected Time Base registers when an event occurs at the ICx pin.  T…

In my last post I implement "Key Debounce" with port polling, port polling is not very efficient. And this time, I will use change notification instead of port polling. It generates interrupt and starts debounce when the level of digital port ch…