uda1341.c

44B0板子的检测程序 包括键盘 LED LCD SEG

#include "s3c44b0.h"
#include "uda1341.h"

#define AUDIO_BASE      0x100000
#define L3_ADDR_DATA0   0x14
#define L3_ADDR_DATA1   0x15
#define L3_ADDR_STATUS  0x16

#define rGPIO_L3        rPDATG
#define L3_MOD_BIT      0x10 //GPC4
#define L3_CLK_BIT      0x20 //GPC5
#define L3_DAT_BIT      0x40 //GPC6
#define L3_MSK_BIT      0x8F //ALL

unsigned char l3_data0_0  = 0x00; //[phone]
unsigned char l3_status_0 = 0x20; //(0)0100000
unsigned char l3_status_1 = 0x80; //(1)0000000

void iis_init(void);
void l3_init(void);

void l3_gen_wait(void);
void l3_gen_addr(unsigned char addr);
void l3_gen_data(unsigned char data);

void l3_gen_wait(void)
{
    int i;
    for (i=0; i<20; i++);
}

void l3_gen_addr(unsigned char addr)
{
    int i;
    unsigned char a;
    unsigned int t, r;
    a = addr;
    t = rGPIO_L3&L3_MSK_BIT;
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 1, clk 0, dat 1
    r = t|L3_MOD_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 0, clk 1, dat 1
    r = t|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    for (i=0; i<8; i++)
    {
        // mod 0, clk 0, dat ?
        if (a&0x01)
            r = t|L3_DAT_BIT;
        else
            r = t;
        rGPIO_L3 = r;
        l3_gen_wait();
        // mod 0, clk 1, dat ?
        if (a&0x01)
            r = t|L3_CLK_BIT|L3_DAT_BIT;
        else
            r = t|L3_CLK_BIT;
        rGPIO_L3 = r;
        l3_gen_wait();
        a = a>>1;
    }
    // mod 0, clk 1, dat 1
    r = t|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 1, clk 0, dat 1
    r = t|L3_MOD_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
}

void l3_gen_data(unsigned char data)
{
    int i;
    unsigned char d;
    unsigned int t, r;
    d = data;
    t = rGPIO_L3&L3_MSK_BIT;
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 0, clk 1, dat 1
    r = t|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    for (i=0; i<8; i++)
    {
        // mod 1, clk 0, dat ?
        if (d&0x01)
            r = t|L3_MOD_BIT|L3_DAT_BIT;
        else
            r = t|L3_MOD_BIT;
        rGPIO_L3 = r;
        l3_gen_wait();
        // mod 1, clk 1, dat ?
        if (d&0x01)
            r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
        else
            r = t|L3_MOD_BIT|L3_CLK_BIT;
        rGPIO_L3 = r;
        l3_gen_wait();
        d = d>>1;
    }
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 0, clk 1, dat 1
    r = t|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
    // mod 1, clk 1, dat 1
    r = t|L3_MOD_BIT|L3_CLK_BIT|L3_DAT_BIT;
    rGPIO_L3 = r;
    l3_gen_wait();
}

void iis_init(void)
{
    rIISMOD  = 0x089; //master, transmit, low, iis, 16-bit, 256fs, 32fs
    rIISPSR  = 0x011; //44.1k*256 = 112896k ?= 40M/4 =10M
    rIISFCON = 0x300; //normal, normal, enable, enable, -, -
    rIISCON  = 0x003; //start
}

void l3_init(void)
{
    l3_gen_addr(L3_ADDR_STATUS);
    l3_gen_data(l3_status_0);
    l3_gen_data(l3_status_1);
}

void cmd_iis(void)
{
    unsigned int cnt;
    unsigned short *buf;
    cnt = 0;
    buf = (unsigned short *)AUDIO_BASE;
    iis_init();
    l3_init();
    /*
    for (;;)
    {
        unsigned short au;
        rIISMOD = 0x049;
        au = rIISFIF;
        rIISMOD = 0x089;
        rIISFIF =  au;
    }
    */
    /*
    for (;;)
    {
        
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(40);
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(-40);
        if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        //if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        //if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        //if ((rIISCON&0x40)==0) rIISFIF = (signed short)(1000);
        //if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        //if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        //if ((rIISCON&0x40)==0) rIISFIF = (signed short)(0);
        //if ((rIISCON&0x40)==0) rIISFIF = (signed short)(-1000);
    }
    */
    ///*
    for (;;)
    {
        if ((rIISCON&0x80)==0)
        {
            rIISFIF = *buf;
            buf++;
            cnt++;
        }
        if (cnt>=0x80000)
        {
            buf = (unsigned short *)AUDIO_BASE;
            cnt = 0;
        }
    }
    //*/
}