1

Create a Project

Create a new project and select thePIC16F1619 along with theCuriosity Board andMPLAB® XC8 compiler. If this is your first time creating a project, click on the link below to expand the directions.

2

Launch MCC

Open the MPLAB Code Configurator (MCC) under theTools > Embedded menu of MPLAB X IDE.

3

System Setup

FromProject Resources chooseSystem Module to open theSystem Setup window within MCC.

• In the clock settings, make sure you selectINTOSC
• Select the system clockFOSC.
• Set Internal Clock to4MHz_HF setting.
• Check thePLL Enabled box.
• The Curiosity Board uses a programmer/debugger on board (PKOB) and uses a Low Voltage Program method to program the MCU, therefore we must enable low voltage programming by checking theLow-voltage programming Enable box.

4

Timer 6 Setup

Add the TMR6 peripheral to the project from the Device Resources area of MCC by scrolling down to theTimer entry and expand the list by clicking on the arrow. Now double click-on theTMR6 entry to add it to theProject Resources list. Then click on theTMR6 to open the Timer 6 configuration setup screen.

1. Check theEnable Timer box
2. SelectClock Source LFINTOSC,Postscaler 1:1, andPrescaler 1:32
3. Set Timer period value to "100.129 ms"
4. Set External Reset Source toT6IN, and Control mode setting toRoll over pulse,
5. Set Start/Reset Option toSoftware Control (this will inhibit hardware reset of timer).
6. Leave theEnable Timer Interrupt box unchecked.

5

CLC Setup

Add the CLC1 peripheral to the project from the Device Resources area of MCC by scrolling down to theCLC entry and expand the list by clicking on the arrow. Now double click-on theCLC1 entry to add it to theProject Resources. Then click on theCLC1 to open the Timer 6 configuration setup screen.

Select theJ-K Flip-Flop with R tab from the logic functions (mode) list. Let’s connect J and K to a high logic level. The logic diagram can be modified by just clicking on the connections.

1. Set first input signal toT6_postscaled_out
2. Connect the first input signal toGate 1 by clicking on the input line toGate 1.
3. SetGate 2 andGate 4 outputs toInverted by clicking on theoutput line.

With the inputs of Gate 2 and Gate 4 grounded and then the output inverted this sets the J and K inputs of the JK flip-flop to always high. The R pin is set low by Gate 3 setup which didn't require any changes from the default.

Connecting I/O pin

The output of the CLC JK Flip Flop needs to be connected to the LED. We can do that using thePeripheral Pin Select (PPS) feature built into the device. The MCC does the setup code for us so all that is needed is to change the blue lock for the PortC 5 pin to green in the CLC1OUT row of the Pin Manager Grid. This will connect the output of the Flip-FlopFlop to the I/O pin using the PPS.

6

Generate Driver Code

Click on theGenerate button in theProject Resources of the MCC screen to have the MCC create the drivers and a basemain.c file for the project.

7

main.c

The generatedmain.c file doesn't need any additional code because this application runs within the core independent peripheral hardware separate from the CPU.

    while (1)    {        // Add your application code    }/** End of File*/

8

Build Project

Click onBuild Project (hammer icon) to compile the code and you will see a "BUILD SUCCESSFUL" message in the output window of MPLAB X within several seconds of processing time.

BUILD SUCCESSFUL (total time: 8s)

9

Make sure your Curiosity Board is connected to the USB port. Then, click onMake and Program Device. This will build the project again and launch the programmer built into the Curiosity Board. In the Output window, you should see a series of messages and when successful it will end with a "Programming and Verify Successful" message.

Output Window:

Connecting to MPLAB Starter Kit on Board...Currently loaded firmware on Starter Kit on BoardFirmware Suite Version.....01.41.07Firmware type..............Enhanced MidrangeTarget detectedDevice ID Revision = 2004The following memory area(s) will be programmed:program memory: start address = 0x0, end address = 0x7ffconfiguration memoryProgramming...Programming/Verify complete