MCUXpresso_LPC55S69/boards/lpcxpresso55s69/driver_examples/pint/pattern_match/cm33_core0

Overview

This example shows how to use SDK drivers to use the Pin interrupt & pattern match peripheral.

SDK version

• Version: 2.15.000

Toolchain supported

• IAR embedded Workbench 9.40.1
• Keil MDK 5.38.1
• GCC ARM Embedded 12.2
• MCUXpresso 11.8.0

Hardware requirements

• Micro USB cable
• LPCXpresso55s69 board
• Personal Computer

Board settings

No special settings are required.

Prepare the Demo

Note: MCUXpresso IDE project default debug console is semihost

1. Connect a micro USB cable between the host PC and the LPC-Link USB port (P6) on the target board.
2. Open a serial terminal with the following settings:
   • 115200 baud rate
   • 8 data bits
   • No parity
   • One stop bit
   • No flow control
3. Download the program to the target board.

Running the demo

1. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

The following lines are printed to the serial terminal when the demo program is executed.

PINT Pattern Match example

PINT Pattern match events are configured

Press corresponding switches to generate events

2.This example configures "Pin Interrupt 0" to be invoked when SW1 switch is pressed by the user. Bit slice 0 is configured as an endpoint in sticky falling edge mode. The interrupt callback prints "PINT Pin Interrupt 0 event detected. PatternMatch status = 1".

"Pin Interrupt 2" is configured to be invoked when rising edge on SW1, SW2 is detected. The interrupt callback prints "PINT Pin Interrupt 2 event detected. PatternMatch status = 100". Bit slices 1 configured to detect sticky rising edge. Bit slice 2 is configured as an endpoint.

note:if need use secure pint,you just needs to modify base address.Find PINT baseaddr in source file, you need change it to SECPINT. everything else stays the same.Because of SECURE PINT device only support PORT0,so we only need to config secure pint interrupt 0 and only this pin can be tested. For example, the following PINT_Init(PINT); PINT_PatternMatchConfig(PINT, kPINT_PatternMatchBSlice0, &pmcfg); PINT_EnableCallbackByIndex(PINT,kPINT_PinInt0); PINT_PatternMatchEnable(PINT); Change the above four lines into the following: PINT_Init(SECPINT); PINT_PatternMatchConfig(SECPINT, kPINT_SecPatternMatchBSlice0, &pmcfg); PINT_EnableCallbackByIndex(SECPINT,kPINT_SecPinInt0); PINT_PatternMatchEnable(SECPINT);

 After configuring secure pint device, you can see log output "PINT Pin Interrupt 0 event detected. PatternMatch status =        1"
 by press SW1 button.