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Example Summary

The following example configures ADC0 to trigger single conversion and turn on LED1 if ADC > 0.5*VDD. Otherwise, LED1 remains off.

Peripherals & Pin Assignments

Peripheral	Pin	Function
GPIOA	PA0	Open-Drain Output
SYSCTL
ADC0	PA25	ADC12 Channel 2 Pin
EVENT
DEBUGSS	PA20	Debug Clock
DEBUGSS	PA19	Debug Data In Out

BoosterPacks, Board Resources & Jumper Settings

Visit LP_MSPM0L1306 for LaunchPad information, including user guide and hardware files.

Pin	Peripheral	Function	LaunchPad Pin	LaunchPad Settings
PA0	GPIOA	PA0	J1_10	PA0 is 5V tolerant open-drain so it requires pull-up J10 2:3 Use 3.3V pull-up J10 1:2 Use 5V pull-up PA0 can be connected to LED1 J2 ON Connect to LED1 J2 OFF Disconnect from LED1
PA25	ADC0	A2	J1_2	PA25 can be connected to photodiode D1 J4 OFF Disconnect from photodiode D1
PA20	DEBUGSS	SWCLK	J2_13	PA20 is used by SWD during debugging J101 15:16 ON Connect to XDS-110 SWCLK while debugging J101 15:16 OFF Disconnect from XDS-110 SWCLK if using pin in application
PA19	DEBUGSS	SWDIO	J2_17	PA19 is used by SWD during debugging J101 13:14 ON Connect to XDS-110 SWDIO while debugging J101 13:14 OFF Disconnect from XDS-110 SWDIO if using pin in application

Low-Power Recommendations

TI recommends to terminate unused pins by setting the corresponding functions to GPIO and configure the pins to output low or input with internal pullup/pulldown resistor.

SysConfig allows developers to easily configure unused pins by selecting Board→Configure Unused Pins.

For more information about jumper configuration to achieve low-power using the MSPM0 LaunchPad, please visit the LP-MSPM0L1306 User’s Guide.

Example Usage

Compile, load and run the example. Provide a valid voltage to A0_2 between 0 - VCC. Monitor LED1 while input voltage changes.

On powerup, the ADC pin(s) used in this example are by default set to the correct analog mode. Therefore, calls to DL_GPIO_initPeripheralAnalogFunction for pinmuxing those pins are not needed.