lib_board.c

44B0板子的检测程序 包括键盘 LED LCD SEG

#include "s3c44b0.h"
#include "lib_44b0.h"
#include "lib_board.h"

#define BRD_BASE        0x06000000
#define rBRD_KEYNOE     (*(volatile unsigned char *)(BRD_BASE+0x00))
#define rBRD_KEYLE      (*(volatile unsigned char *)(BRD_BASE+0x02))
#define rBRD_SEG0       (*(volatile unsigned char *)(BRD_BASE+0x04))
#define rBRD_SEG1       (*(volatile unsigned char *)(BRD_BASE+0x06))
#define rBRD_SEG2       (*(volatile unsigned char *)(BRD_BASE+0x08))
#define rBRD_SEG3       (*(volatile unsigned char *)(BRD_BASE+0x0A))
#define rBRD_LCD1       (*(volatile unsigned char *)(BRD_BASE+0x0C))
#define rBRD_LCD2       (*(volatile unsigned char *)(BRD_BASE+0x0E))
#define rBRD_DAC        (*(volatile unsigned char *)(BRD_BASE+0x10))
/*
unsigned char seg_num[16]=
{0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 
 0x7F, 0x6F, 0x77, 0x7C, 0x39, 0x5E, 0x79, 0x71};*/

unsigned char seg_num[16]=
{0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 
 0xFF, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF};

void brd_led(void)
{
    int i;
    unsigned int t;
    t = (rPCONE&~0xFF00)|0x5500;
    rPCONE = t;
    t = rPDATE;
    for (;;)
    {
        for (i=0; i<500000; i++);
        rPDATE = t&~0xF0;
        for (i=0; i<500000; i++);
        rPDATE = t|0xF0;
    }
}

void brd_int(void)
{
    INT_ENABLE(26); // global
    INT_ENABLE(22); // eint3
    for (;;);
}

void brd_key(void)
{
    int i;
    unsigned int t;
    unsigned char ki, ko;
    unsigned char kl, kn;
    int kcnt;
    i = 0;
    kcnt = 0;
    for (;;)
    {
        for (i=0; i<4; i++)
        {
            ko = 0x01<<i;
            rBRD_KEYLE = ko;
            ki = rBRD_KEYNOE&0x0F;
            kn = (ki<<4)|ko;
            if (ki != 0) break;
        }
        if (kn == kl)
            kcnt = (kcnt+1)%50000;
        else
            kcnt = 0;
        if (ki == 0)
            kcnt = 0;
        kl = kn;
        if (kcnt == 1000)
        {
            t = kn;
            serial_puts("\n");
            serial_puth(&t);
        }
    }
}

void brd_seg(void)
{
    int i, j;
    j=0;
    for (;;)
    {
        for (i=0; i<500000; i++);
        rBRD_SEG0=seg_num[j];
        rBRD_SEG1=seg_num[j];
        rBRD_SEG2=seg_num[j];
        rBRD_SEG3=seg_num[j];
        j=(j+1)%16;
    }
}

void brd_lcd(void)
{
    serial_puts("Not Support!\n");
    return;
}

void brd_dac(void)
{
    unsigned char i;
    i = 0;
    for (;;)
    {
        rBRD_DAC = i;
        i++;
    }
}

__irq void isr_eint3(void)
{
    serial_puts("ISR of EINT3 is called!\n");
    CLEAR_PEND_INT(22);
}