53 lines
1.9 KiB
Plaintext
53 lines
1.9 KiB
Plaintext
Overview
|
|
========
|
|
The SCTImer multi-state project is a demonstration program of the SCTimer state machine. It shows how to set up events to be triggered in a certain state
|
|
and transitioning between states.
|
|
State 0 has 2 events that generate a PWM signal, it also has an event linked to an input signal to transition to State 1.
|
|
State 1 has 4 events that generate 2 PWM signals, it also has an event linked to an input signal to transition to State 0.
|
|
|
|
Toolchain supported
|
|
===================
|
|
- IAR embedded Workbench 8.32.3
|
|
- Keil MDK 5.27
|
|
- MCUXpresso 11.0.0
|
|
- GCC ARM Embedded 8.2.1
|
|
|
|
Hardware requirements
|
|
=====================
|
|
- Mini/micro USB cable
|
|
- LPCLPCXpresso54102 board
|
|
- Personal Computer
|
|
|
|
Board settings
|
|
==============
|
|
No special settings are required.
|
|
|
|
Prepare the Demo
|
|
================
|
|
1. Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J6) on the board
|
|
2. Open a serial terminal with the following settings (See Appendix A in Getting started guide for description how to determine serial port number):
|
|
- 115200 baud rate
|
|
- 8 data bits
|
|
- No parity
|
|
- One stop bit
|
|
- No flow control
|
|
3. Download the program to the target board.
|
|
4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
|
|
|
|
Running the demo
|
|
================
|
|
The log below shows example output of the SCTimer multi-state demo in the terminal window:
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
SCTimer example to output edge-aligned PWM signal
|
|
|
|
When user presses a switch the PWM signal will be seen from Out 2
|
|
When user presses the switch again PWM signal on Out 2 will turn off
|
|
The PWM signal from Out 4 will remain active all the time
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
- Use a Digital osc probe on J1_12 and J2_18 to watch the PWM.
|
|
- When press sw1 the PWM signal will be seen from J1_12.
|
|
- When press sw1 again the PWM signal will turn off from J1_12.
|
|
Customization options
|
|
=====================
|
|
|