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How to configure a PIC24 timer to generate an interrupt?
You will be shown how to configure a PIC24 timer to generate an overflow interrupt every half-second. You will write a simple C function to toggle an LED. You will register the C function as the Interrupt Service Routine (ISR) for the timer, ensuring that each time the timer overflows, the LED on the development board will toggle.
How to create a half second timer using interrupts?
From the Device Resources section of the MCC Resource Management window, locate Timer1 (TMR1). Double-click on TMR1 to add this peripheral to the resources available to the project. With the F osc set at 2 MHz, Timer1 will be unable to generate a half-second period as the 16-bit counter will overflow before half-second.
When to use the interrupt for Timer 0 in Java?
If we had a lot of code in our while (INTCONbits.T0IF == 0) loop, it could be a long time between the timer rolling over (setting the interrupt flag), and the code checking that flag (since that only happens at the beginning of each loop). We will remedy this by using the interrupt for Timer 0 to call an interrupt service routine.
How to slow down a PIC24 / dsPIC33 timer?
Double-click on TMR1 to add this peripheral to the resources available to the project. With the F osc set at 2 MHz, Timer1 will be unable to generate a half-second period as the 16-bit counter will overflow before half-second. To lengthen the period window for this timer, we will prescale the system clock by 64 to slow the timer down.
How to set a timer on a PIC MCU?
It is expected that after completing this lab, you will able to use MCC to set a timer period of any value on a 16-bit PIC MCU. This project uses the PIC24F Curiosity Development Board. This board has two LEDs and two input switches: LED1 – connected to pin RA9 (PORTA pin 9).
What does the system module on a PIC24F MCU do?
The System Module allows the user to configure the MCU’s clock, the Watchdog Timer (WDT), and make changes to the debug pin assignments. This feature of the PIC24F MCU has numerous options, which are typically modified to fit the needs of the application.