I used starterware_1_10_03_03 for omapl138, but I have problem.
I used the timer on DSP core, but it can not work. The timer does not start.
My program is from the example. It is as follow:
/**
* \file timerCounter.c
*
* \brief Sample application for timer.
*/
#include "uart.h"
#include "hw_uart.h"
#include "interrupt.h"
#include "soc_OMAPL138.h"
#include "hw_syscfg0_OMAPL138.h"
#include "timer.h"
#include "lcdkOMAPL138.h"
#include "uartStdio.h"
#ifndef _TMS320C6X
#include "cpu.h"
#endif
/******************************************************************************
** INTERNAL MACRO DEFINITIONS
*******************************************************************************/
#define STR_LEN (13)
#define TMR_PERIOD_LSB32 (0x07FFFFFF)
#define TMR_PERIOD_MSB32 (0x0)
/******************************************************************************
** INTERNAL FUNCTION PROTOTYPES
*******************************************************************************/
static void TimerIsr(void);
static void TimerSetUp64Bit(void);
static void TimerIntrSetUp(void);
/******************************************************************************
** INTERNAL VARIABLE DEFINITIONS
*******************************************************************************/
static unsigned char cntArr[9] = {'8', '7', '6', '5', '4', '3', '2', '1', '0'};
static volatile unsigned int secCnt = 0;
static volatile unsigned int flagIsrCnt = 0;
/******************************************************************************
** FUNCTION DEFINITIONS
*******************************************************************************/
int main(void)
{
/* Set up the UART2 peripheral */
UARTStdioInit();
/* Set up the Timer2 peripheral */
TimerSetUp64Bit();
/* Set up the AINTC to generate Timer2 interrupts */
TimerIntrSetUp();
/* Enable the timer interrupt */
TimerIntEnable(SOC_TMR_2_REGS, TMR_INT_TMR12_NON_CAPT_MODE);
#ifndef _TMS320C6X
/* Switch to non privileged mode; This is done for demonstration purpose */
CPUSwitchToUserMode();
#endif
/* Send the first String */
UARTPuts("Tencounter: 9", -1);
/* Start the timer. Characters from cntArr will be sent from the ISR */
TimerEnable(SOC_TMR_2_REGS, TMR_TIMER12, TMR_ENABLE_CONT);
/* make sure all the characters from cntArray from ISR */
while(secCnt < 9)
{
/* Replace previous number each time the timer interrupt occurs */
if(flagIsrCnt)
{
UARTPutc('\b');
UARTPutc(cntArr[secCnt]);
secCnt++;
flagIsrCnt = 0;
}
}
/* Disable the timer. No more timer interrupts */
TimerDisable(SOC_TMR_2_REGS, TMR_TIMER12);
/* Halt the program */
while(1);
}
/*
** Timer Interrupt Service Routine
*/
static void TimerIsr(void)
{
/* Disable the timer interrupt */
TimerIntDisable(SOC_TMR_2_REGS, TMR_INT_TMR12_NON_CAPT_MODE);
#ifdef _TMS320C6X
/* Clear interrupt status in DSPINTC */
IntEventClear(SYS_INT_T64P2_TINTALL);
#else
/* Clear the interrupt status in AINTC */
IntSystemStatusClear(SYS_INT_TIMR2_ALL);
#endif
TimerIntStatusClear(SOC_TMR_2_REGS, TMR_INT_TMR12_NON_CAPT_MODE);
/* Signal application to print a new character */
flagIsrCnt = 1;
/* Enable the timer interrupt */
TimerIntEnable(SOC_TMR_2_REGS, TMR_INT_TMR12_NON_CAPT_MODE);
}
/*
** Setup the timer for 64 bit mode
*/
static void TimerSetUp64Bit(void)
{
/* Configuration of Timer */
TimerConfigure(SOC_TMR_2_REGS, TMR_CFG_64BIT_CLK_INT);
/* Set the 64 bit timer period */
TimerPeriodSet(SOC_TMR_2_REGS, TMR_TIMER12, TMR_PERIOD_LSB32);
TimerPeriodSet(SOC_TMR_2_REGS, TMR_TIMER34, TMR_PERIOD_MSB32);
}
/*
** Set up the ARM Interrupt Controller for generating timer interrupt
*/
static void TimerIntrSetUp(void)
{
#ifdef _TMS320C6X
/* Initialize the DSPINTC */
IntDSPINTCInit();
/* Register the Timer ISR */
IntRegister(C674X_MASK_INT4, TimerIsr);
/* Map Timer interrupts to DSP maskable interrupt */
IntEventMap(C674X_MASK_INT4, SYS_INT_T64P2_TINTALL);
/* Enable DSP interrupt in DSPINTC */
IntEnable(C674X_MASK_INT4);
/* Enable DSP interrupts */
IntGlobalEnable();
#else
/* Initialize AINTC and register timer interrupt */
IntAINTCInit();
/* Register the Timer ISR */
IntRegister(SYS_INT_TIMR2_ALL, TimerIsr);
/* Set the channel number for Timer interrupt, it will map to IRQ */
IntChannelSet(SYS_INT_TIMR2_ALL, 2);
/* Enable IRQ for ARM (in CPSR)*/
IntMasterIRQEnable();
/* Enable AINTC interrupts in GER */
IntGlobalEnable();
/* Enable IRQ in AINTC */
IntIRQEnable();
/* Enable timer interrupts in AINTC */
IntSystemEnable(SYS_INT_TIMR2_ALL);
#endif
}
