lpc_gpio_led_output#
Overview#
The GPIO Example project is a demonstration program that uses the KSDK software to manipulate the general-purpose outputs. The example use LEDs and buttons to demonstrates GPIO API for port and pin manipulation (init, set, clear, and toggle).
Supported Boards#
EVK-MIMXRT595
Hardware requirements
Micro USB cable
EVK-MIMXRT595 board
Personal Computer
Board settings
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J40) on the board
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output in the terminal window:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 100001
Masked port read: 100000
Port state: 100000
...
Press the SW2 will toggle the LED RED state.
EVK-MIMXRT685
Hardware requirements
Micro USB cable
EVK-MIMXRT685 board
Personal Computer
Board settings
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J5) on the board
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output in the terminal window:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 2018004
Masked port read: 2010000
Port state: 18004
Port state: 18004
...
Press the SW2 will toggle the LED BLUE state.
FRDM-MCXW23
Hardware requirements
Type-C USB cable
FRDM-MCXW23 Board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the FRDM board J10.
Open a serial terminal with the following 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 demo.
Running the demo
The log below shows the output of the demo in the terminal window:
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 1c100c
Masked port read: 1c0000
Port state: 18100c
Port state: 10100c
Port state: 18100c
Port state: 10100c
...
When press sw2 the LED BLUE will toggle.
FRDM-RW612
Hardware requirements
Micro USB cable
FRDM-RW612 board
Personal Computer
Board settings
No special settings
Prepare the Demo
Connect a micro USB cable between the PC host and the MCU-Link USB port (J10) on the board
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output in the terminal window:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 2000000
Masked port read: 2000000
Port state: 0
Port state: 1
...
When press sw2 the LED BLUE will toggle.
LPC845BREAKOUT
Hardware requirements
Micro USB cable
LPC845 Breakout board
Personal Computer
Board settings
No special settings are required.
Prepare the demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port on the board.
Open a serial terminal with the following settings:
9600 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 demo.
Running the demo
The log below shows example output of the gpio driver demo in the terminal window:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 3fffff
Masked port read: 3f0000
Port state: fffff067
Port state: fffff067
...
When press K3 the LD1 GREEN will turn to shine.
LPCXpresso51U68
Hardware requirements
Mini/micro USB cable
LPCXpresso51U68 board
Personal Computer
Board settings
This 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 Demo
Connect a serial cable from the debug UART port of the board to the PC. Start Tera Term (http://ttssh2.osdn.jp) and make a connection to the virtual serial port.
Start Tera Term
New connection -> Serial
Set appropriate COMx port (x is port number) in Port context menu. Number is provided by operation system and could be different from computer to computer. Select COM number related to virtual serial port. Confirm selected port by OK button.
Set following connection parameters in menu Setup->Serial port… Baud rate: 115200 Data: 8 Parity: none Stop: 1 Flow control: none
Confirm selected parameters by OK button.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: fffdffff
Masked port read: fffdffff
Port state: fffdffff
Port state: fffdffff
Port state: fffdffff
Port state: fffdffff
...
When press sw1 the LED GREEN will turn to shine and you can Probe oscilloscope at J1-14 to see output signal.
Note: maybe exist different output log for different board configurations.
LPCXpresso54628
Hardware requirements
Micro USB cable
LPCXpresso54628 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a micro USB cable between the host PC and the LPC-Link USB port (J8) on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Running the demo
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.
GPIO Driver example
The LED is taking turns to shine.
Standard port read: ffbffffe
Masked port read: ffbffffe
Port state: ffbffffe
Then press the SW2, the LED3 will start to shine.
Press corresponding switches to generate events This 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.
LPCXpresso54S018
Hardware requirements
Micro USB cable
LPCXpresso54S018 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a micro USB cable between the host PC and the LPC-Link USB port (J8) on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Running the demo
This demo is an external flash plain load demo, ROM will copy image in external flash to SRAMX to run:
Build the demo to generate a bin file. Note: If need to generate bin file using MCUXpresso IDE, below steps need to be followed: Set in example Properties->C/C++ Build->Settings->Build steps->Post-build steps->Edit enbable arm-none-eabi-objcopy -v -O binary “&{BuildArtifactFileName}” “&{BuildArtifactFileBaseName}.bin”
This plainload example linked the vector table to 0x00000000, but program to external flash 0x10000000.
Program the bin file to external on board flash via SEGGER J-FLASH Lite(V6.22 or higher):
a. Open SEGGER J-FLASH Lite, select device LPC54S018.
b. Click the ‘Erase Chip’ to erase the extrenal flash.(if can not success, press SW4 button and reset the board, and try to erase again)
c. Select the bin data file, set the ‘.bin/Erase Start’ address to 0x10000000, then click ‘Program Device’ Note: Please use above way to program the binary file built by armgcc tool chain to external flash. For IAR, KEIL, MCUXpresso IDE, you can use the IDE tool to program the external flash.
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.
GPIO Driver example
The LED is taking turns to shine.
Standard port read: ffbff7ff
Masked port read: bfbff7ff
Port state: bfbff7ff
Then press the SW2, the LED3 will start to shine.
Press corresponding switches to generate events This 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.
LPCXpresso54S018M
Hardware requirements
Micro USB cable
LPCXpresso54S018M board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a micro USB cable between the host PC and the LPC-Link USB port (J8) on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Running the demo
This demo is an external flash plain load demo, ROM will copy image in external flash to SRAMX to run:
Build the demo to generate a bin file. Note: If need to generate bin file using MCUXpresso IDE, below steps need to be followed: Set in example Properties->C/C++ Build->Settings->Build steps->Post-build steps->Edit enbable arm-none-eabi-objcopy -v -O binary “&{BuildArtifactFileName}” “&{BuildArtifactFileBaseName}.bin”
This plainload example linked the vector table to 0x00000000, but program to external flash 0x10000000.
Program the bin file to external on board flash via SEGGER J-FLASH Lite(V6.22 or higher):
a. Open SEGGER J-FLASH Lite, select device LPC54S018M.
b. Click the ‘Erase Chip’ to erase the extrenal flash.(if can not success, press SW4 button and reset the board, and try to erase again)
c. Select the bin data file, set the ‘.bin/Erase Start’ address to 0x10000000, then click ‘Program Device’ Note: Please use above way to program the binary file built by armgcc tool chain to external flash. For IAR, KEIL, MCUXpresso IDE, you can use the IDE tool to program the external flash.
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.
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 7b80107c
Masked port read: 7b80107c
Port state: 7b80107c
Then press the SW2, the LED3 will start to shine.
Press corresponding switches to generate events This 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.
LPCXpresso55S06
Hardware requirements
Mini/micro USB cable
LPCXpresso55S06 board
Personal Computer
Board settings
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J1) on the board
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
Download the program to the target board.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 40290
Masked port read: 40000
Port state: 64001804
Port state: 64001804
Port state: 64001804
Port state: 64001804
...
When press sw1 the LED GREEN will turn to shine
LPCXpresso55S16
Hardware requirements
Mini/micro USB cable
LPCXpresso55S16 board
Personal Computer
Board settings
The jumper setting: Default jumpers configuration does not work, you will need to add JP20 and JP21 (JP22 optional for ADC use)
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J1) on the board
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
Download the program to the target board.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 40290
Masked port read: 40000
Port state: 64001804
Port state: 64001804
Port state: 64001804
Port state: 64001804
...
When press sw1 the LED GREEN will turn to shine
LPCXpresso55S28
Hardware requirements
Mini/micro USB cable
LPCXpresso55S28 board
Personal Computer
Board settings
This example project does not call for any special hardware configurations.
Prepare the Demo
Note: MCUXpresso IDE project default debug console is semihost
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (P6) on the board
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
Download the program to the target board.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 402c0
Masked port read: 40000
Port state: 64001804
Port state: 64001804
Port state: 64001804
Port state: 64001804
...
When press s1 the LED GREEN will turn to shine
LPCXpresso55S36
Hardware requirements
Mini/micro USB cable
LPCXpresso55S36 board
Personal Computer
Board settings
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J1) on the board
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
Download the program to the target board.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 40290
Masked port read: 40000
Port state: 64001804
Port state: 64001804
Port state: 64001804
Port state: 64001804
...
When press sw1 the LED RED will turn to shine
LPCXpresso55S69
Hardware requirements
Mini/micro USB cable
LPCXpresso55s69 board
Personal Computer
Board settings
This example project does not call for any special hardware configurations.
Prepare the Demo
Note: MCUXpresso IDE project default debug console is semihost
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (P6) on the board
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
Download the program to the target board.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 402c0
Masked port read: 40000
Port state: 64001804
Port state: 64001804
Port state: 64001804
Port state: 64001804
...
When press s1 the LED GREEN will turn to shine
LPCXpresso802
Hardware requirements
Micro USB cable
LPCXpresso54018 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a micro USB cable between the host PC and the LPC-Link USB port (J8) on the target board.
Open a serial terminal with the following settings:
9600 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Running the demo
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.
GPIO Driver example
The LED is taking turns to shine.
Standard port read: ffbff7ff
Masked port read: bfbff7ff
Port state: bfbff7ff
Then press the USER, the LD21&&LE22 will start to shine.
Press corresponding switches to generate events This 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.
LPCXpresso804
Hardware requirements
Mini/micro USB cable
LPCXpresso804 board
Personal Computer
Board settings
This 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 Demo
Connect a serial cable from the debug UART port of the board to the PC. Start Tera Term (http://ttssh2.osdn.jp) and make a connection to the virtual serial port.
Start Tera Term
New connection -> Serial
Set appropriate COMx port (x is port number) in Port context menu. Number is provided by operation system and could be different from computer to computer. Select COM number related to virtual serial port. Confirm selected port by OK button.
Set following connection parameters in menu Setup->Serial port… Baud rate: 9600 Data: 8 Parity: none Stop: 1 Flow control: none
Confirm selected parameters by OK button.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 7ffffbb7
Masked port read: 7fff0000
Port state: 7ffffbb7
Port state: 7ffffbb7
...
When press sw1 the LED blue will turn to shine.
LPCXpresso824MAX
Hardware requirements
Mini/micro USB cable
LPCXpresso824MAX board
Personal Computer
Board settings
This 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 Demo
Connect a serial cable from the debug UART port of the board to the PC. Start Tera Term (http://ttssh2.osdn.jp) and make a connection to the virtual serial port.
Start Tera Term
New connection -> Serial
Set appropriate COMx port (x is port number) in Port context menu. Number is provided by operation system and could be different from computer to computer. Select COM number related to virtual serial port. Confirm selected port by OK button.
Set following connection parameters in menu Setup->Serial port… Baud rate: 9600 Data: 8 Parity: none Stop: 1 Flow control: none
Confirm selected parameters by OK button.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: fffffff7
Masked port read: ffff0000
Port state: fffffff7
Port state: fffffff7
...
When press sw1 the LED GREEN will turn to shine.
When press sw2 the LED RED will turn to shine.
LPCXpresso845MAX
Hardware requirements
Mini/micro USB cable
LPCXpresso845max board
Personal Computer
Board settings
This 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 Demo
Connect a serial cable from the debug UART port of the board to the PC. Start Tera Term (http://ttssh2.osdn.jp) and make a connection to the virtual serial port.
Start Tera Term
New connection -> Serial
Set appropriate COMx port (x is port number) in Port context menu. Number is provided by operation system and could be different from computer to computer. Select COM number related to virtual serial port. Confirm selected port by OK button.
Set following connection parameters in menu Setup->Serial port… Baud rate: 9600 Data: 8 Parity: none Stop: 1 Flow control: none
Confirm selected parameters by OK button.
Running the demo
After the board is flashed the Tera Term will print message on terminal.
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: fffffff7
Masked port read: ffff0000
Port state: fffffff7
Port state: fffffff7
...
When press sw2 the LED GREEN will turn to shine.
When press sw1 the LED RED will turn to shine.
LPCXpresso860MAX
Hardware requirements
Micro USB cable
LPCXpresso860max board
Personal Computer
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J4) on the board
Open a serial terminal with the following settings (See Appendix A in Getting started guide for description how to determine serial port number):
9600 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 demo.
Running the demo
Users are prompted to press the SW2, and board will blink the LED.
MIMXRT685-AUD-EVK
Hardware requirements
Micro USB cable
MIMXRT685-AUD-EVK board
Personal Computer
Board settings
Prepare the Demo
Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J5) on the board
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output in the terminal window:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 2018004
Masked port read: 2010000
Port state: 18004
Port state: 18004
...
When press sw2 the LED BLUE will turn to shine.
RD-RW612-BGA
Hardware requirements
Micro USB cable
RD-RW612-BGA board
Personal Computer
Board settings
Ensure R520 is removed, R518 is installed to make SW4 work.
Prepare the Demo
Connect a micro USB cable between the PC host and the MCU-Link USB port (J7) on the board
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Launch the debugger in your IDE to begin running the demo.
Running the demo
The log below shows the output in the terminal window:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 2000007
Masked port read: 2000000
Port state: 7
Port state: 3
...
When press sw4 the LED1 will toggle.
MCXW23-EVK
Hardware requirements
Mini/micro USB cable
MCXW23-EVK Board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the EVK board J33.
Open a serial terminal with the following 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 demo.
Running the demo
The log below shows the output of the demo in the terminal window:
Example output:
GPIO Driver example
The LED is taking turns to shine.
Standard port read: 1c100c
Masked port read: 1c0000
Port state: 18100c
Port state: 10100c
Port state: 18100c
Port state: 10100c
...
When press sw4 the LED BLUE will toggle.