Clock.h File Reference

Provide functions that initialize the MSPM0 clock module. More...

Go to the source code of this file.

Macros
#define	OSCFREQ32MHZ   0
	using OSCFREQ32MHZ Clock_Init will create 32 MHz bus clock
#define	OSCFREQ4MHZ   1
	using OSCFREQ4MHZ Clock_Init will create 4 MHz bus clock

Functions
void	Clock_Init80MHz (int enablePA14)
	Initialize clock to 80 MHz. More...
void	Clock_Init_HFXT_40_80MHz (int enablePA14)
	Initialize clock to 80 MHz. More...
void	Clock_Init40MHz (void)
	Initialize clock to 40 MHz. More...
void	Clock_Init_HFXT_16MHz (void)
	Initialize clock to 16 MHz. More...
void	Clock_Init_HFXT_16_80MHz (int enablePA14)
	Initialize clock to 80 MHz. More...
void	Clock_Init (uint32_t freq)
	Initialize clock to 4 or 32 MHz. More...
uint32_t	Clock_Freq (void)
	Returns current clock bus frequency in Hz. More...
void	Clock_Delay (uint32_t cycles) __attribute__((noinline))
	Software implementation of a busy-wait delay. More...
void	Clock_Delay1ms (uint32_t ms)
	Software implementation of a busy-wait delay. More...
void	SysTick_Init (void)
	SysTick for busy-wait delay. More...
void	SysTick_Wait (uint32_t delay)
	SysTick implementation of a busy-wait delay. More...
void	SysTick_Wait10ms (uint32_t t)
	SysTick implementation of a busy-wait delay. More...
void	TimerG8_Init (uint32_t divider, uint32_t prescale)
	SysTick for busy-wait delay. More...

Detailed Description

Provide functions that initialize the MSPM0 clock module.

Reconfigure MSPM0 to run at 4, 32, 40 or 80 MHz

Version

ECE319K v1.0

Author

Daniel Valvano and Jonathan Valvano

Copyright

Copyright 2026 by Jonathan W. Valvano, valva.nosp@m.no@m.nosp@m.ail.u.nosp@m.texa.nosp@m.s.edu,

Warning

AS-IS

Note

For more information see http://users.ece.utexas.edu/~valvano/

Date

July 4, 2026

Clock pins

Pin	Description
PA5	HFXIN crystal
PA6	HFXOUT crystal
PA14	Possible clock output