cpu.c File Reference

#include "cpu.h"

Go to the source code of this file.

Functions
void	InitCPU (Uint32 oscCLK, Uint16 dsp28_DIVSEL, Uint16 dsp28_PLLCR, Uint16 hspCLK, Uint16 lspCLK)
void	InitSysCtrl (void)
void	InitPieCtrl (void)
void	EnableInterrupts (void)
	This function enables the PIE module and CPU interrupts.
void	ServiceDog (void)
void	DisableDog (void)
	This function disables the watchdog timer.
void	InitPll (Uint16 val, Uint16 divsel)
	Initializes the PLL.
void	InitPeripheralClocks (void)
	Initializes high speed and low speed clocks.
Variables
struct CPUConfiguration	cpuConf

---

Function Documentation

void DisableDog

(

void

)

This function disables the watchdog timer.

Definition at line 159 of file cpu.c.

void EnableInterrupts

(

void

)

This function enables the PIE module and CPU interrupts.

Examples:

TIMotorLIBExample1/main.c, TIMotorLIBExample2/main.c, TIMotorLIBExample3/main.c, TIMotorLIBExampleHrdw/main.c, and TIMotorLIBExampleSw/main.c.

Definition at line 123 of file cpu.c.

void InitCPU	(	Uint32	oscCLK,
		Uint16	dsp28_DIVSEL,
		Uint16	dsp28_PLLCR,
		Uint16	hspCLK,
		Uint16	lspCLK
	)

Init CPU clocks (spru712d pp 47).

Parameters:

	oscCLK	Oscillator frequency in Mhz
	dsp28_DIVSEL	SYSCLKOUT divider Values: 0, 1 (/4); 2(/2); 3(/1)
	dsp28_PLLCR	Pll Values: from 0 (bypass) to 10 (x10)
	hspCLK	High speed clock pre-scaler. This clock is the clock source for: ADC Values: [0 (reset default=SYSCLKOUT/2), 1, 2, 4, 6, 8, 10, 12, 14]
	lspCLK	Low speed clock pre-scaler. This clock is the clock source for: SPI, SCI, I2C McBSP Values: [0 (reset default= SYSCLKOUT/4), 1, 2, 4, 6, 8, 10, 12, 14]

Examples:

TIMotorLIBExample1/main.c, TIMotorLIBExample2/main.c, TIMotorLIBExample3/main.c, TIMotorLIBExampleHrdw/main.c, and TIMotorLIBExampleSw/main.c.

Definition at line 30 of file cpu.c.

void InitPeripheralClocks

(

void

)

Initializes high speed and low speed clocks.

Definition at line 333 of file cpu.c.

void InitPieCtrl

(

void

)

This function initializes the PIE control registers to a known state. All the interrupt vectors are cleared.

Definition at line 79 of file cpu.c.

void InitPll	(	Uint16	val,
		Uint16	divsel
	)

Initializes the PLL.

Definition at line 168 of file cpu.c.

void InitSysCtrl

(

void

)

This function initializes the System Control registers to a known state.

• Disables the watchdog
• Set the PLLCR for proper SYSCLKOUT frequency
• Set the pre-scaler for the high and low frequency peripheral clocks
• Enable the clocks to the peripherals

Definition at line 60 of file cpu.c.

void ServiceDog

(

void

)

This function resets the watchdog timer. Enable this function for using ServiceDog in the application

Definition at line 146 of file cpu.c.

---

Variable Documentation

struct CPUConfiguration cpuConf

Definition at line 27 of file cpu.c.