[参考译文] TMS320F28335：TMS320F28335 CPUtimer 中的中断计数

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1025897/tms320f28335-interruptcount-in-tms320f28335-cputimer

尊敬的先生：

InterruptCount 的用途是什么、因为它在任何位置都不会在源代码中使用。

此致、

Rajesh BN。

#include "DSP2833x_Device.h"

// external function prototypes
extern void InitSysCtrl(void);
extern void InitPieCtrl(void);
extern void InitPieVectTable(void);
extern void InitCpuTimers(void);
extern void ConfigCpuTimer(struct CPUTIMER_VARS *, float, float);

// Prototype statements for functions found within this file.
void Gpio_select(void);
interrupt void cpu_timer0_isr(void);

//###########################################################################
//						main code									
//###########################################################################
void main(void)
 {
	int i=0;	// binary counter for digital output

	InitSysCtrl();	// Basic Core Init from DSP2833x_SysCtrl.c

	EALLOW;
   	SysCtrlRegs.WDCR= 0x00AF;	// Re-enable the watchdog 
   	EDIS;			// 0x00AF  to NOT disable the Watchdog, Prescaler = 64

	DINT;				// Disable all interrupts
	
	Gpio_select();		// GPIO9, GPIO11, GPIO34 and GPIO49 as output
					    // to 4 LEDs at Peripheral Explorer)

	InitPieCtrl();		// basic setup of PIE table; from DSP2833x_PieCtrl.c
	
	InitPieVectTable();	// default ISR's in PIE

	EALLOW;
	PieVectTable.TINT0 = &cpu_timer0_isr;
	EDIS;

	InitCpuTimers();	// basic setup CPU Timer0, 1 and 2

	ConfigCpuTimer(&CpuTimer0,150,100000); // CPU - Timer0 at 100 milliseconds

	PieCtrlRegs.PIEIER1.bit.INTx7 = 1;

	IER |=1;

	EINT;
	ERTM;

	CpuTimer0Regs.TCR.bit.TSS = 0;	// start timer0

	while(1)
	{    
		    i++;
		    
	  		while(CpuTimer0.InterruptCount == 0);
			CpuTimer0.InterruptCount = 0;
			
			EALLOW;
			SysCtrlRegs.WDKEY = 0x55;	// service WD #1
			EDIS;

	 
	}
} 

void Gpio_select(void)
{
	EALLOW;
	GpioCtrlRegs.GPAMUX1.all = 0;		// GPIO15 ... GPIO0 = General Puropse I/O
	GpioCtrlRegs.GPAMUX2.all = 0;		// GPIO31 ... GPIO16 = General Purpose I/O
	GpioCtrlRegs.GPBMUX1.all = 0;		// GPIO47 ... GPIO32 = General Purpose I/O
	GpioCtrlRegs.GPBMUX2.all = 0;		// GPIO63 ... GPIO48 = General Purpose I/O
	GpioCtrlRegs.GPCMUX1.all = 0;		// GPIO79 ... GPIO64 = General Purpose I/O
	GpioCtrlRegs.GPCMUX2.all = 0;		// GPIO87 ... GPIO80 = General Purpose I/O
	 
	GpioCtrlRegs.GPADIR.all = 0;
	GpioCtrlRegs.GPADIR.bit.GPIO9 = 1;	// peripheral explorer: LED LD1 at GPIO9
	GpioCtrlRegs.GPADIR.bit.GPIO11 = 1;	// peripheral explorer: LED LD2 at GPIO11

	GpioCtrlRegs.GPBDIR.all = 0;		// GPIO63-32 as inputs
	GpioCtrlRegs.GPBDIR.bit.GPIO34 = 1;	// peripheral explorer: LED LD3 at GPIO34
	GpioCtrlRegs.GPBDIR.bit.GPIO49 = 1; // peripheral explorer: LED LD4 at GPIO49
	GpioCtrlRegs.GPCDIR.all = 0;		// GPIO87-64 as inputs
	EDIS;
}   

interrupt void cpu_timer0_isr(void)
{
	CpuTimer0.InterruptCount++;
	EALLOW;
	SysCtrlRegs.WDKEY = 0xAA;	// service WD #2
	EDIS;
	PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}