/********************************************************
*
* 北京四维卓信电子有限公司
* http://www.openadsp.com
*
* 【OpenADSP开源社区】
* http://www.openadsp.com/bbs/
*
********************************************************/
#include <cdefBF533.h>
#include <sys\exception.h>
#include "cpld.h"
//#define KEY_INT_ENABLE
EX_INTERRUPT_HANDLER(FlagA_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_Flags(void)
{
*pFIO_INEN = 0x0001;
*pFIO_DIR = 0x0000;
*pFIO_EDGE = 0x0001;
*pFIO_POLAR = 0x0001;
*pFIO_MASKA_D = 0x0001;
}
void Init_Interrupts(void)
{
*pSIC_IAR0 = 0xffffffff;
*pSIC_IAR1 = 0xffffffff;
*pSIC_IAR2 = 0xffff5fff;
register_handler(ik_ivg12, FlagA_ISR);
*pSIC_IMASK = 0x00080000;
}
EX_INTERRUPT_HANDLER(FlagA_ISR)
{
unsigned char interrupt=0;
unsigned char keydata;
if(~*pINTERRUPT_DAT & KEY_INT)
{
keydata = ~*pKEYBOARD_DAT; //读键值
switch(keydata)
{
case LUK: printf("The key is left->up\n\r"); break;
case LLK: printf("The key is left->left\n\r"); break;
case LDK: printf("The key is left->down\n\r"); break;
case LRK: printf("The key is left->right\n\r"); break;
case RUK: printf("The key is right->up\n\r"); break;
case RLK: printf("The key is right->left\n\r"); break;
case RDK: printf("The key is right->down\n\r"); break;
case RRK: printf("The key is right->right\n\r"); break;
default:
}
}
*pFIO_FLAG_C = 0x0001;
}
void main(void)
{
Set_PLL(16,4);
Init_EBIU();
printf("Please press the Keyboard!\n");
#ifdef KEY_INT_ENABLE
Init_Interrupts();
ExtIO_Interrupt_Enable();
Interrupt_Enable();
Init_Flags();
#else
unsigned char keydata;
while(1)
{
keydata = ~*pKEYBOARD_DAT; //读键值
if(keydata & LUK)
printf("The key is left->up\n\r");
if(keydata & LLK)
printf("The key is left->left\n\r");
if(keydata & LDK)
printf("The key is left->down\n\r");
if(keydata & LRK)
printf("The key is left->right\n\r");
if(keydata & RUK)
printf("The key is right->up\n\r");
if(keydata & RLK)
printf("The key is right->left\n\r");
if(keydata & RDK)
printf("The key is right->down\n\r");
if(keydata & RRK)
printf("The key is right->right\n\r");
}
#endif
while(1);
}
