Overview
The TPM Example project is a demonstration program that uses the KSDK software to generate square pulse PWM to control a LED brightness.
- TPM generate a PWM with increasing duty cycle and then decreasing
- LED is firstly brighter and then dimmer, continuously
Supported Platforms
These Freescale Freedom development platforms and Tower System modules are supported by the TPM example.
- FRDM-KL02Z
- FRDM-KL03Z
- FRDM-KL25Z
- FRDM-KL26Z
- FRDM-KL27Z
- FRDM-KL43Z
- FRDM-KL46Z
- TWR-KL43Z48M
NOTE: The TWR-K65F180M does not have a suitable LED. The PWM signal is connected to the elevator board connector B52.
System Requirement
Hardware requirements
- J-Link ARM
- P&E Micro Multi-link universal
- Mini/micro USB cable
- USB A to micro AB cable
- Hardware (tower/base board, ...) for specific device
- Personal Computer
Toolchain requirements
- IAR embedded Workbench version 7.30.4
- ARM GCC 4.8.3 2014q3
- Keil MDK 5.13
- Kinetis Design Studio IDE v.2.5.0
- Atollic TrueSTUDIO for ARM win32 v5.2.1
Software requirements
- The project files are in: <SDK_Install>/examples/<board>/driver_examples/tpm/<toolchain>.
- Library dependencies: ksdk_platform_lib
Getting Started
Hardware settings
The TPM Example project does not call for any special hardware configurations. Although not required, the recommendation is to leave the development board's jumper settings and configurations in default state when running this example.
Prepare the example
- Connect a USB cable between the PC host and the OpenSDA USB port on the board.
- Open a serial terminal with these settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
- Download the program to the target board.
- Either press the reset button on your board or launch the debugger in your IDE to begin running the example.
Run the example
These instructions are displayed/shown on the terminal window:
See the change of LED brightness
After that, LED bright is first increasing and then LED becomes dimmer, continuously.