1.6 CCL Manchester Encoder
This example application shows how to use the CCL peripheral library and generate a Manchester-encoded output.
Description
This demonstrates a way to generate a Manchester-encoded output using a SPI port and the CCL. The SPI port is sending out a predefined buffer of data in a circular fashion. Data is sent out LSB first, with CCL_OUT being the Manchester-encoded output. Pins are configured such that a logic analyzer can be attached to see the input (MOSI and SCK) and the output (CCL_OUT) simultaneously.
Downloading and Building the Application
To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.
Path of the application within the repository is apps/ccl/manchester_encoder.
To build the application, refer to the following table and open the project using its IDE.
| Project Name | Description |
|---|---|
| wbz653_curiosity.X | MPLABX Project for WBZ653 Curiosity Board |
Setting Up the Hardware
The following table shows the target hardware for the application projects.
| Project Name | Description |
|---|---|
| wbz653_curiosity.X | WBZ653 Curiosity Board |
Setting Up WBZ653 Curiosity Board
- SCK pin of mikroBUS2 has SCK output.
- Use jumper to connect SCK pin of mikroBUS1 and MISO pin of mikroBUS1 (This routes SCK signal To CCLIN4).
- MOSI pin of mikroBUS1 has MOSI output..
- RA3 (pin 25 of GPIO Header) has CCL output (CCL_OUT1).
- Connect the Debug USB port on the board to the computer using a micro USB cable.
Running the Application
- Connect a logic analyzer to MOSI pin of mikroBUS1.
- Connect a logic analyzer to SCK pin of mikroBUS2.
- Connect a logic analyzer to RA3 pin of GPIO Header (pin 25 of GPIO Header).
- Refer to the following table for pin details:
Board MOSI Pin SCK Pin CCL_OUT Pin WBZ653 Curiosity Board Pin 6 of mikroBUS1 Pin 4 of mikroBUS2 Pin 25 of GPIO Header - Build and Program the application using its IDE.
- Observe the output on logic analyzer, it should follow the truth table as shown
in the following diagram:
