PIC16F1705 Ep6-1C MCC LED Timer0

Описание: In this video the PIC16F1705 has three LED’s connected on Pins RC2, RC4 and RA5, using sinking circuits. The LED’s will be used with Timer0, demonstrating the timer’s features. Using MPLAB MCC first this time, to configure device pins and Timer0’s configuration to generate code sections, and add bits of code for each application requirement.

The LED connected to RC2 will used with the 8 bit Timer0, in Timer mode. The Setup of the Timer0 to create a delay for blinking the LED on RC2 @ 500ms using Interrupt Polling will be covered in the first created project.

Then the LED connected to RC4 will also be used in Timer mode to blink the LED using an Interrupt delay. The Setup of the Timer0 to create an Interrupt delay for blinking the LED @ 2000ms will be covered in the second created Project.

Lastly, the LED connected to RA5 will require the Timer0 mode, to be changed from Timer mode to Counter mode and we will go over the setup required for the example used in this tutorial. We will cover the Setup of Timer0 in counter mode, blinking the LED connected to RA5 @ 3000ms.

The PIC16F1705 is setup as usual with the connections to programmer. Current limiting resistors are installed as pull-ups on Pins RC2, RC4 and RA5. When Timer0 is setup for Counter mode, an external input is required. This input is monitored by Pin RA2 of the PIC16F1705. The PIC12F1572 is added to the third project and can be preprogrammed to generate a 10Hz (10 pulse per second) output on pin RA2, which will be connected with a pull-up resistor and also connected to PIC16F1705’s pin RA2, as the external input for Timer0 in Counter mode.

The PIC12F1572 can use the example from the previous tutorial, PIC12F1572_LED_MCC, where the RA2 LED was toggled at 500ms, now change to 50ms for both setLow and setHigh. This will produce the 10 pulses per second or 10Hz, used as the external input for Timer0 in Counter mode of PIC16F1705.

Two separate projects for the Timer0 in Timer Mode with Delay Polling and Interrupt methods will be covered first and then a third project for Timer0 using Counter Mode.

The two Timer 0 Tutorial pdf documents for some operational review and possible testing can be found at links:

https://ww1.microchip.com/downloads/e...
https://ww1.microchip.com/downloads/e...

Here are two videos with good intro to Timer 0 and then the explanation of how it works.

PIC18 Timers- Introduction to timers in PIC Micro controllers
   • PIC18 Timers- Introduction to timers in PI...  

PIC18 Timers- Blink an LED with Timer0
   • PIC18 Timers- Blink an LED with Timer0  

I've had requests to post hex files for projects to download and run and will look at posting links to access these soon. I will also be introducing the MPLAB X IDE Simulator and showing how we can use this to test projects without PIC devices or Programmers helping you follow the Tutorials without delays or costs needing to buy PIC devices and Programmers...

Enjoy.