adc16_low_power_async_dma#
Overview#
The ADC Low Power Async DMA demo application demonstrates the usage of the ADC and DMA peripheral while in a low power mode. The microcontroller is first set to very low power stop (VLPS) mode. Every 100 ms, low power timer trigger the ADC module convert value on ADC channel. After 16 times(1,6s) the DMA transfer finish interrupt wake up the CPU to process sampled data, print result to user and toggle LED.
Supported Boards#
FRDM-K32L2B
Hardware requirements
Mini/micro USB cable
FRDM-K32L2B 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 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 demo.
Running the demo
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
ADC LOW POWER ASYNC DMA DEMO
ADC16_DoAutoCalibration() Done.
ADC Full Range: 65536
Please press any key to trigger ADC conversion.
ADC value: 15670
Please press any key to trigger ADC conversion.
ADC value: 16634
Please press any key to trigger ADC conversion.
ADC value: 16686
Please press any key to trigger ADC conversion.
ADC value: 16681
Please press any key to trigger ADC conversion.
Note:
LED will be toggled when the CPU wake up.
FRDM-MCXC242
Hardware requirements
USB-C cable
FRDM-MCXC242 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 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 demo.
Running the demo
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
ADC LOW POWER ASYNC DMA DEMO
ADC16_DoAutoCalibration() Done.
ADC Full Range: 65536
Please press any key to trigger ADC conversion.
ADC value: 15670
Please press any key to trigger ADC conversion.
ADC value: 16634
Please press any key to trigger ADC conversion.
ADC value: 16686
Please press any key to trigger ADC conversion.
ADC value: 16681
Please press any key to trigger ADC conversion.
Note:
LED will be toggled when the CPU wake up.
FRDM-MCXC444
Hardware requirements
Type-C USB cable
FRDM-MCXC444 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 type-c USB cable between the host PC and the MCU-Link USB port (J13) on the target 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 demo.
Running the demo
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
ADC LOW POWER ASYNC DMA DEMO
ADC16_DoAutoCalibration() Done.
ADC Full Range: 65536
Please press any key to trigger ADC conversion.
ADC value: 15670
Please press any key to trigger ADC conversion.
ADC value: 16634
Please press any key to trigger ADC conversion.
ADC value: 16686
Please press any key to trigger ADC conversion.
ADC value: 16681
Please press any key to trigger ADC conversion.
Note:
LED will be toggled when the CPU wake up.
TWR-KM34Z50MV3
Hardware requirements
Mini USB cable
TWR-KM34Z50MV3 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 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 demo.
Running the demo
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
ADC LOW POWER ASYNC DMA DEMO
ADC16_DoAutoCalibration() Done.
ADC Full Range: 65536
Please press any key to trigger ADC conversion.
ADC value: 65528
Please press any key to trigger ADC conversion.
ADC value: 65529
Please press any key to trigger ADC conversion.
ADC value: 65526
Please press any key to trigger ADC conversion.
ADC value: 48992
Please press any key to trigger ADC conversion.
ADC value: 48986
Please press any key to trigger ADC conversion.
ADC value: 48994
Please press any key to trigger ADC conversion
Note:
LED will be toggled when the CPU wake up.
TWR-KM34Z75M
Hardware requirements
Mini USB cable
TWR-KM34Z75M 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 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 demo.
Running the demo
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
ADC LOW POWER ASYNC DMA DEMO
ADC16_DoAutoCalibration() Done.
ADC value: 15670
ADC value: 16634
ADC value: 16686
ADC value: 16681
Note:
LED will be toggled when the CPU wake up.
TWR-KM35Z75M
Hardware requirements
Micro USB cable
TWR-KM35Z75M 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 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 demo.
Running the demo
When the demo runs successfully, the log would be seen on the OpenSDA terminal like:
ADC LOW POWER ASYNC DMA DEMO
ADC16_DoAutoCalibration() Done.
ADC Full Range: 65536
Please press any key to trigger ADC conversion.
ADC value: 14501
Please press any key to trigger ADC conversion.
ADC value: 14503
Please press any key to trigger ADC conversion.
ADC value: 14492
Please press any key to trigger ADC conversion.
ADC value: 14476
Please press any key to trigger ADC conversion.
Note:
LED will be toggled when the CPU wake up.