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adc16_interrupt

adc16_interrupt#

Overview#

The adc16_interrupt example shows how to use interrupt with ADC16 driver.

In this example, user should indicate a channel to provide a voltage signal (can be controlled by user) as the ADC16’s sample input. When running the project, typing any key into debug console would trigger the conversion. ADC interrupt would be asserted once the conversion is completed. In ADC ISR, the conversion completed flag would be cleared by reading the conversion result value. Also, the conversion result value is stored, and the ISR counter is increased. These information would be printed when the execution return to the main loop.

The point is that the ADC16 interrupt configuration is set when configuring the ADC16’s conversion channel. When in software trigger mode, the conversion would be launched by the operation of configuring channel, just like writing a conversion command. So if user wants to generate the interrupt every time the conversion is completed, the channel’s configuration with enabling interrupt setting would be used for each conversion.

Supported Boards#

FRDM-K22F
Hardware requirements

  • Mini/Micro USB cable

  • FRDM-K22F board

  • Personal Computer

Board settings

No special is needed.

Prepare the Demo

  1. Connect a USB cable between the PC host and the OpenSDA USB port on the board.

  2. Open a serial terminal on PC for OpenSDA serial device with these settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Connect external signal source to user-defined channel, defined by “DEMO_ADC16_USER_CHANNEL” in source code.

  4. Download the program to the target board.

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

Running the demo

When the demo runs successfully, the log would be seen on the OpenSDA terminal like:

ADC16 interrupt Example. ADC16_DoAutoCalibration() Done. ADC Full Range: XXXX Press any key to get user channel’s ADC value … ADC Value: 1918 ADC Interrupt Count: 1 ADC Value: 1635 ADC Interrupt Count: 2 ADC Value: 1412 ADC Interrupt Count: 3 ADC Value: 1332 ADC Interrupt Count: 4 ADC Value: 1543 ADC Interrupt Count: 5 ADC Value: 1579 ADC Interrupt Count: 6

FRDM-K32L2A4S
Hardware requirements

  • Mini/Micro USB cable

  • FRDM-K32L2A4S board

  • Personal Computer

Board settings

Input analog signal to J4-11

Prepare the Demo

  1. Connect a USB cable between the PC host and the OpenSDA USB port on the board.

  2. Open a serial terminal on PC for OpenSDA serial device with these settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Connect external signal source to user-defined channel, defined by “DEMO_ADC16_USER_CHANNEL” in source code.

  4. Download the program to the target board.

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

Running the demo

When the demo runs successfully, the log would be seen on the OpenSDA terminal like:

ADC16 interrupt Example.
ADC16_DoAutoCalibration() Done.
ADC Full Range: XXXX
Press any key to get user channel's ADC value ...
ADC Value: 1918
ADC Interrupt Count: 1
ADC Value: 1635
ADC Interrupt Count: 2
ADC Value: 1412
ADC Interrupt Count: 3
ADC Value: 1332
ADC Interrupt Count: 4
ADC Value: 1543
ADC Interrupt Count: 5
ADC Value: 1579
ADC Interrupt Count: 6
FRDM-K32L2B
Hardware requirements

  • Mini/Micro USB cable

  • FRDM-K32L2B board

  • Personal Computer

Board settings

No special is needed.

Prepare the Demo

  1. Connect a USB cable between the PC host and the OpenSDA USB port on the board.

  2. Open a serial terminal on PC for OpenSDA serial device with these settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Connect external signal source to user-defined channel, defined by “DEMO_ADC16_USER_CHANNEL” in source code. Shorten jumper J16 to use external reference voltage pair pins.

  4. Download the program to the target board.

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

Running the demo

When the demo runs successfully, the log would be seen on the OpenSDA terminal like:

ADC16 interrupt Example. ADC16_DoAutoCalibration() Done. ADC Full Range: XXXX Press any key to get user channel’s ADC value … ADC Value: 1918 ADC Interrupt Count: 1 ADC Value: 1635 ADC Interrupt Count: 2 ADC Value: 1412 ADC Interrupt Count: 3 ADC Value: 1332 ADC Interrupt Count: 4 ADC Value: 1543 ADC Interrupt Count: 5 ADC Value: 1579 ADC Interrupt Count: 6

FRDM-MCXC041
Hardware requirements

  • Type-C USB cable

  • FRDM-MCXC041 board

  • Personal Computer

Board settings

No special settings are required.

Prepare the Demo

  1. Connect a USB cable between the PC host and the OpenSDA USB port on the board.

  2. Open a serial terminal on PC for OpenSDA serial device with these settings:

    • 9600 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Connect external signal in J4-2.

  4. Download the program to the target board.

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

Running the demo

When the example runs successfully, the following message is displayed in the terminal:

ADC16 interrupt Example.
ADC16_DoAutoCalibration() Done.
Press any key to get user channel's ADC value ...
ADC Value: 1918
ADC Interrupt Count: 1
ADC Value: 1635
ADC Interrupt Count: 2
ADC Value: 1412
ADC Interrupt Count: 3
ADC Value: 1332
ADC Interrupt Count: 4
ADC Value: 1543
ADC Interrupt Count: 5
ADC Value: 1579
ADC Interrupt Count: 6
FRDM-MCXC242
Hardware requirements

  • USB-C cable

  • FRDM-MCXC242 board

  • Personal Computer

Board settings

No special is needed.

Prepare the Demo

  1. Connect a USB cable between the PC host and the OpenSDA USB port on the board.

  2. Open a serial terminal on PC for OpenSDA serial device with these settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Connect external signal source to user-defined channel, defined by “DEMO_ADC16_USER_CHANNEL” in source code.

  4. Download the program to the target board.

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

Running the demo

When the demo runs successfully, the log would be seen on the OpenSDA terminal like:

ADC16 interrupt Example. ADC16_DoAutoCalibration() Done. ADC Full Range: XXXX Press any key to get user channel’s ADC value … ADC Value: 1918 ADC Interrupt Count: 1 ADC Value: 1635 ADC Interrupt Count: 2 ADC Value: 1412 ADC Interrupt Count: 3 ADC Value: 1332 ADC Interrupt Count: 4 ADC Value: 1543 ADC Interrupt Count: 5 ADC Value: 1579 ADC Interrupt Count: 6

FRDM-MCXC444
Hardware requirements

  • Type-C USB cable

  • FRDM-MCXC444 board

  • Personal Computer

Board settings

No special is needed.

Prepare the Demo

  1. Connect a type-c USB cable between the host PC and the MCU-Link USB port (J13) 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. Connect external signal source J6-2 to user-defined channel, defined by “DEMO_ADC16_USER_CHANNEL” in source code. Shorten jumper JP6 to use external reference voltage pair pins.

  4. Download the program to the target board.

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

Running the demo

When the demo runs successfully, the log would be seen on the terminal like:

ADC16 interrupt Example. ADC16_DoAutoCalibration() Done. ADC Full Range: XXXX Press any key to get user channel’s ADC value … ADC Value: 1918 ADC Interrupt Count: 1 ADC Value: 1635 ADC Interrupt Count: 2 ADC Value: 1412 ADC Interrupt Count: 3 ADC Value: 1332 ADC Interrupt Count: 4 ADC Value: 1543 ADC Interrupt Count: 5 ADC Value: 1579 ADC Interrupt Count: 6

TWR-KM34Z50MV3
Hardware requirements

  • Mini USB cable

  • TWR-KM34Z50MV3 board

  • Personal Computer

Board settings

Connect J8 1-2 to use potentiometer

Prepare the Demo

  1. Connect a USB cable between the host PC and the OpenSDA USB port 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.

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

Running the demo

Roll the potentiometer(R20) to change the ADC value. When the demo runs successfully, the following message is displayed in the terminal:

ADC16 interrupt Example.
ADC16_DoAutoCalibration() Done.
Press any key to get user channel's ADC value ...
ADC Value: 1918
ADC Interrupt Count: 1
ADC Value: 1635
ADC Interrupt Count: 2
ADC Value: 1412
ADC Interrupt Count: 3
ADC Value: 1332
ADC Interrupt Count: 4
ADC Value: 1543
ADC Interrupt Count: 5
ADC Value: 1579
ADC Interrupt Count: 6
TWR-KM34Z75M
Hardware requirements

  • Mini USB cable

  • TWR-KM34Z75M board

  • Personal Computer

Board settings

Connect J21 1-2 to use potentiometer

Prepare the Demo

  1. Connect a USB cable between the host PC and the OpenSDA USB port 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.

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

Running the demo

Roll the potentiometer(R21) to change the ADC value. When the demo runs successfully, the following message is displayed in the terminal:

ADC16 interrupt Example.
ADC16_DoAutoCalibration() Done.
Press any key to get user channel's ADC value ...
ADC Value: 1918
ADC Interrupt Count: 1
ADC Value: 1635
ADC Interrupt Count: 2
ADC Value: 1412
ADC Interrupt Count: 3
ADC Value: 1332
ADC Interrupt Count: 4
ADC Value: 1543
ADC Interrupt Count: 5
ADC Value: 1579
ADC Interrupt Count: 6
TWR-KM35Z75M
Hardware requirements

  • Micro USB cable

  • TWR-KM35Z75M board

  • Personal Computer

Board settings

Connect J21 1-2 to use potentiometer

Prepare the Demo

  1. Connect a USB cable between the host PC and the OpenSDA USB port 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.

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

Running the demo

Roll the potentiometer(R21) to change the ADC value. When the demo runs successfully, the following message is displayed in the terminal:

ADC16 interrupt Example.
ADC16_DoAutoCalibration() Done.
Press any key to get user channel's ADC value ...
ADC Value: 1918
ADC Interrupt Count: 1
ADC Value: 1635
ADC Interrupt Count: 2
ADC Value: 1412
ADC Interrupt Count: 3
ADC Value: 1332
ADC Interrupt Count: 4
ADC Value: 1543
ADC Interrupt Count: 5
ADC Value: 1579
ADC Interrupt Count: 6
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