CE219490 – PSoC 6 MCU Ramping LED
using Smart I/O
Document No. 002-25568 Rev.*A
1
Objective
This example demonstrates the flexibility of Smart I/O in PSoC
®
6 MCU, by implementing an LED ramping effect exclusively in
hardware with no CPU usage beyond initialization.
Requirements
™ IDE 1.1
Programming Language:
C
Associated Parts:
Related Hardware:
PSoC 6 BLE Pioneer Kit, PSoC 6 WiFi-BT Pioneer Kit, PSoC6 WiFi-Prototyping Kit
Overview
This example uses a PWM resource and Smart I/O in PSoC 6 MCU to implement a ramping LED, where an LED gradually
cycles through increasing and decreasing brightness levels. There is no CPU usage except for the initialization of PWM and
Smart I/O.
Hardware Setup
This example uses the
kit’s default configuration. See the kit guide to ensure the kit is configured correctly.
Note
: The PSoC 6 BLE Pioneer kit and the PSoC 6 WiFi-BT Pioneer kit ship with KitProg2. ModusToolbox only works with
KitProg3. Before using this code example, make sure that the kit is upgraded to KitProg3. See ModusToolbox Help >
ModusToolbox IDE Documentation > User Guide; section PSoC 6 MCU KitProg Firmware Loader. If you do not upgrade, you
will see an error like “unable to find CMSIS-DAP device” or “KitProg firmware is out of date”.
Software Setup
None.
Operation
Follow the instructions that came with your kit to make sure that your kit is connected to your PC
1. Connect the kit to your PC using the provided USB cable.
2. Import the application into a new workspace. See
3. Build the application. Choose
Project
>
Build All
.
4. Program the PSoC 6 MCU device. In the project explorer, select the
mainapp
project. In the Quick Panel, scroll to the
Launches
section and click the
Program (KitProg3)
configuration. Program configurations also build the code.
5. Using a jumper wire, connect
P9[4]
to
P13[7]
.
You can observe the ramping effect on the LED connected to P13[7] on the kit.
Debugging
You can debug the example to step through the code. Use the
Debug (KitProg3)
configuration. If you are unfamiliar with how
