mcx_opamp_trigger_mode#
Overview#
The OPAMP trigger mode example demonstrates how to use SCTIMER to trigger OPAMP. In this example, INP0 and INP1 are connected to different levels. When OPAMP receives a trigger signal, it will switch to different output voltages.
Supported Boards#
FRDM-MCXN947
Hardware requirements
Type-C USB cable
FRDM-MCXN947 board
Personal Computer
Board settings Positive INP0 J4-1(P4_12). Positive INP1 J8-18(P4_13). Negative input channel J4_3(OPAMP0_INN) connects to GND. OPAMP output pin: J8-20(P4_15)
Prepare the Demo
Connect a type-c USB cable between the PC host and the CMSIS DAP USB port (J17) on the board
Open a serial terminal with the following settings (See Appendix A in the Getting started guide for a description of 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
OPAMP TRIGGER MODE EXAMPLE!
1. Connect INP0 and INP1 to different levels.
2. Monitor OPAMP output with an oscilloscope. When OPAMP receives a trigger signal, it will switch to different output voltages.
FRDM-MCXN947T
Hardware requirements
Type-C USB cable
FRDM-MCXN947T board
Personal Computer
Board settings Positive INP0 J4-1(P4_12). Positive INP1 J8-18(P4_13). Negative input channel J4_3(OPAMP0_INN) connects to GND. OPAMP output pin: J8-20(P4_15)
Prepare the Demo
Connect a type-c USB cable between the PC host and the CMSIS DAP USB port (J17) on the board
Open a serial terminal with the following settings (See Appendix A in the Getting started guide for a description of 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
OPAMP TRIGGER MODE EXAMPLE!
1. Connect INP0 and INP1 to different levels.
2. Monitor OPAMP output with an oscilloscope. When OPAMP receives a trigger signal, it will switch to different output voltages.
MCX-N9XX-EVK
Hardware requirements
Mini/micro USB cable
MCX-N9XX-EVK board
Personal Computer
Board settings Positive INP0 J4-1(P4_12). Positive INP1 J20-18(P4_13). Negative input channel J4_3(OPAMP0_INN) connects to GND. OPAMP output pin: J20-20(P4_15)
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 (See Appendix A in the Getting started guide for a description of 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.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
OPAMP TRIGGER MODE EXAMPLE!
1. Connect INP0 and INP1 to different levels.
2. Monitor OPAMP output with an oscilloscope. When OPAMP receives a trigger signal, it will switch to different output voltages.