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dsc_adc16_interrupt

dsc_adc16_interrupt#

Overview#

The adc16_interrupt example shows how to use interrupts through the ADC16 driver.

In this example, the user should specify a channel to provide a voltage signal (which can be controlled by the user) as the ADC16 Sample input. When the project is running, any key input in the debug console will trigger the conversion. ADC interrupt Once the conversion is complete, it will be asserted. Once the value of the conversion data register is read in the interrupt function, the conversion flag is cleared and one conversion ends. When the conversion is performed again, and the conversion flag is set to 1, the conversion result is placed in the data register.

The important point is to set the ADC16 interrupt configuration when configuring the ADC16 conversion channel. When Software trigger mode, start the conversion through the operation of the configuration channel, just like writing a Conversion command. So if the user wants to generate an interrupt every time the conversion is completed, the channel’s Each conversion will use the configuration with interrupt settings enabled

Supported Boards#

TWR-MC56F8400
Hardware requirements

  • Mini USB cable

  • TWR-MC56F8400 board

  • Personal Computer

Board hardware common setting

  1. Power setting:

    Connect J11 pin1 and pin2 Connect J6 pin1 and J7 pin2

  2. UART setting:

    Connect J8 pin3 and pin4 Connect J9 pin3 and pin4

  3. Onboard OSJTAG debugger setting:

    Connect J20 pin1 and pin2. Leave J17 open. Note: J17 is only used(connected) when firmware update for onboard debugger OSJTAG. Connect J21 pin 1-2, 3-4, 5-6, 7-8, to setup onboard debugger OSJTAG. Note: when use external debugger(connected to J14), leave all J21 pins open

Board settings

  • Supply external voltage(0~3.3V) to J503-3.

Prepare the Demo

  1. Connect USB cable between the host PC and the JM60 USB(J18) port on the target board. It setups OSJTAG and COM port in PC device manager.

  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 with OSJTAG debug configuration.

  4. 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.
ADC Full Range: 4096
Press any key to get user channel's ADC value ...
ADC Value: 1129
ADC Interrupt Count: 1
ADC Value: 1100
ADC Interrupt Count: 2
ADC Value: 1028
ADC Interrupt Count: 3
ADC Value: 1141
ADC Interrupt Count: 4
...
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