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Example Summary

The following example configures TimerG4 in combined capture mode (configure to measure a PWM signal’s period and duty cycle). TimerG1 is used to generate a the PWM signal.

Peripherals & Pin Assignments

Peripheral	Pin	Function
SYSCTL
TIMG1	PA26	Counter Compare Pin 0
TIMG4	PA10	Counter Compare Pin 0
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
PA26	TIMG1	CCP0	J4_38	J12 ON/OFF: Connect/Disconnect LED2 Red
PA10	TIMG4	CCP0	J4_36	N/A
PA20	DEBUGSS	SWCLK	J2_13	J101 15:16 ON: Connect to XDS-110 SWCLK (debug)
PA19	DEBUGSS	SWDIO	J2_17	J101 13:14 ON: Connect to XDS-110 SWDIO (debug)

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

Connect a jumper cable between PA10 (GPIO_TIMER_CAPTURE_C0_PIN) and PA26 (GPIO_PWM_C0_PIN). Compile, load and run the example. The application will capture two full periods before hitting a SW breakpoint. This ensures that the timers are fully synchronized (please refer the TRM for additional details). At the breakpoint, the user can inspect the values of pwmPeriod and pwmDuty. The value of pwmDuty should be set to ~90. The value of pwmPeriod should be set to ~1000.