5.2 MCC Melody Example Components: Running the Examples

When using the MPLAB Data Visualizer Time Plot to run the ADCC Basic Printf example, the following will appear:

The following video shows a similar example from the MCC Melody API Reference for PIC16F/18F MCU Families.

When using the MPLAB Data Visualizer Time Plot to run the ADCC Basic Printf example, the following will appear:

Tip: Load the MCC generated data_streamer.ds, meaning the Data Streamer variable configuration file, as follows:

The following video shows a similar example from the MCC Melody API Reference for PIC16F/18F MCU Families.

When using the MPLAB Data Visualizer Time Plot to run the ADC Basic Printf example, the following will appear:

The following video shows a similar example from the MCC Melody API Reference for PIC16F/18F MCU Families.

When using the MPLAB Data Visualizer Time Plot to run the ADC Basic Printf example, the following will appear:

Tip: Load the MCC generated data_streamer.ds, meaning the Data Streamer variable configuration file, as follows:

This example uses printf to print: “x Hello World!” to a terminal, where x is a counter. When using the MPLAB Data Visualizer Terminal to run the UART Printf Variable Counter example, the following will appear:

Tip: If you are new to the MPLAB Data Visualizer, have a look at Visual Debugging with MPLAB® Data Visualizer on Microchip University.

The following video shows a similar example from the MCC Melody API Reference for: PIC16F/18F, AVR.

Write any message by calling UART_write_string(msg), passing the message to print on the terminal. This can act as a light-weight alternative to printf. Running the UART Write String example displays the “Hello World!” message in the terminal.

The following video shows a similar example from the MCC Melody API Reference for: PIC16F/18F, AVR.

This example shows how to implement a basic Command Line Interface (CLI). Here a LED is controlled using commands from a terminal. Send “ON” to turn the LED on, and “OFF” to turn it off.

The following video shows a similar example from the MCC Melody API Reference for: PIC16F/18F, AVR.

This example demonstrates how to send and receive data byte using UART read and write functions. A catch for a read error (if any) in the received byte is also implemented.

The following video shows a similar example from the MCC Melody API Reference for: PIC16F/18F, AVR.

Running the Timer Toggle LED example shows the LED on the board flash at a 100 ms period interval.

• Example 100 ms:

  

The image shows running the Timer Toggle LED, verifying the 100ms period using Debug GPIO on the MPLAB Data Visualizer. An example Curiosity Nano is used, but the example can be configured to run on any board.

• 

  Tip: Two vertical cursors are added to verify the timer frequency. See configuration instructions below.

  Tip: A logic analyser can be used instead of Debug GPIO on the MPLAB Data Visualizer.

  

Running the PWM duty cycle update with the timer callback example shows the LED brightness levels updated every 1 second. This cycle is then repeated in a loop with the LED changing from ‘ON Completely’, ‘Multiple levels of Brightness’ and ‘OFF’.

Running the PWM duty cycle update with button press example shows the LED brightness levels updated every time the configured button is pressed. This cycle is then repeated in a loop with the LED changing from ‘ON Completely’, ‘Multiple levels of Brightness’ and ‘OFF’.

A single button is required for this example. Here are the available options for the dsPIC33CK64MC105 on the Curiosity Nano Explorer:

Running the PWM duty cycle update with analog input source example shows the LED brightness levels being updated corresponding to analog input. An ADC channel is used to receive input (from a potentiometer, for example), while the PWM updates the LED duty cycle accordingly.

Lower the ADC sampling frequency to be less the time it takes for an ADC Conversion (Tad).

How to fix it: ADCC Clock>Clock Divider>Slow down ADC Clock.