/********************************************************
*
* 北京四维卓信电子有限公司
*
* 【OpenADSP开源社区】
*
********************************************************/
#include <cdefBF533.h>
#include <sys\exception.h>
EX_INTERRUPT_HANDLER(TIMER1_ISR);
void Set_PLL(unsigned int pmsel,unsigned int pssel)
{
unsigned int new_PLL_CTL;
*pPLL_DIV = pssel;
asm("ssync;");
new_PLL_CTL = (pmsel & 0x3f) << 9;
*pSIC_IWR |= 0xffffffff;
if (new_PLL_CTL != *pPLL_CTL)
{
*pPLL_CTL = new_PLL_CTL;
asm("ssync;");
asm("idle;");
}
}
void Init_EBIU(void)
{
*pEBIU_AMBCTL0 = 0x7bb07bb0;
*pEBIU_AMBCTL1 = 0xffc07bb0;
*pEBIU_AMGCTL = 0x000f;
}
void Init_SDRAM(void)
{
*pEBIU_SDRRC = 0x00000817;
*pEBIU_SDBCTL = 0x00000013;
*pEBIU_SDGCTL = 0x0091998d;
ssync();
}
void Init_Timers(void)
{
*pTIMER1_CONFIG = 0x0059;
*pTIMER1_PERIOD = 0x00800000;
*pTIMER1_WIDTH = 0x00400000;
*pTIMER_ENABLE = 0x0002;
}
void Init_Interrupts(void)
{
*pSIC_IAR0 = 0xffffffff;
*pSIC_IAR1 = 0xffffffff;
*pSIC_IAR2 = 0xffffff4f;
register_handler(ik_ivg11, TIMER1_ISR);
*pSIC_IMASK = 0x00020000;
}
EX_INTERRUPT_HANDLER(TIMER1_ISR)
{
*pTIMER_STATUS = 0x0002;
printf("timer1 interrupt !\n");
}
void main(void)
{
Set_PLL(16,4);
Init_EBIU();
Init_SDRAM();
Init_Timers();
Init_Interrupts();
while(1);
}
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