PIC18F47Q10 Using TMR2 as Auto-conversion trigger for ADCC module

The PIC18F47Q10 features Three 8-bit Timers/Counters and a 10-bit ADC with computation (ADCC) module. In this demo, uses TMR2 peripheral to trigger the ADCC to make conversions at a fixed frequency rate, that can be adjusted with the period of TMR2.

Related Documentation

• TB3285 - Getting Started with Timers/Counters on PIC18
• PIC18F47Q10 Product Family Page
• PIC18F47Q10 datasheet
• TB3261 - PIC1000: Getting Started with Writing C-Code for PIC16 and PIC18

Software Used

• MPLAB® X IDE 5.30 or newer (microchip.com/mplab/mplab-x-ide)
• MPLAB® XC8 2.10 or newer compiler (microchip.com/mplab/compilers)

Hardware Used

• PIC18F47Q10 Curiosity Nano (DM182029)
• Curiosity Nano Base for Click Boards™ (AC164162)
• POT click board™ (MIKROE-3402)

Setup

• The PIC18F47Q10 Curiosity Nano Development Board (DM182029) is used as the test platform.
• Insert it into the Curiosity Nano Base for Click Boards™ (AC164162) along with the POT click board™ (MIKROE-3402).
  

The following pin configurations must be made for this project:

Pin	Configuration
RA0	Analog input for ADCC
RE0	Digital output (LED0)

Operation

1. Build demo firmware, make and program the generated code onto the PIC18F47Q10 Curiosity Nano.
2. Plug the POT click board™ into the mikroBUS™ slot (1) of the Curiosity Nano Base board.
3. Run the code, LED0 will blink with Timer2Period frequency.
4. LED0 will blink if Potentiometer value is below DesiredThreshold, and if above DesiredThreshold, LED0 will be ON.
   

Summary

This project showcases how easy it is to use the TMR2 of PIC18F47Q10 as a Auto-conversion trigger for ADCC module.