//**************************************
//************************************** 音量IC 2314 子程序
//**************************************
void start2314()
{
p_2314_scl = 1;
p_2314_sda = 1;
_nop_();
p_2314_sda = 0;
delay();
p_2314_scl = 0;
}
void clock2314()
{
_nop_();
p_2314_scl = 1;
delay();
p_2314_scl = 0;
_nop_();
}
ss(){}
void stop2314(void)
{
p_2314_sda = 0;
_nop_();
p_2314_scl = 1;
delay();
p_2314_sda = 1;
}
void send_2314_8bit(unsigned char s)
{
unsigned char data i;
for(i=9;i>0;i--)
{
p_2314_sda=(bit)(s & 0x80);
s *=2;
clock2314();
}
// p_2314_sda=1;
}
//s(){}
void pt2314(void)
{
unsigned char data i;
unsigned char code tone_tab[]={0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,
0x0e,0x0d,0x0c,0x0b,0x0a,0x9};
//unsigned char *p;
//p=&tone_tab[0];
start2314();
send_2314_8bit(0x88);
send_2314_8bit(mute_peg==1? 0x3f: vol_mem&0x3f);
send_2314_8bit(L_mem|0xc0);
send_2314_8bit(R_mem|0xe0);
switch(input_mem)
{
case aux_code: i=0x5f; //in4 0db
break;
case aux1_code: i=0x5c; //in0 0db
break;
case aux2_code: i=0x5e; //in3 0db
break;
case usb_code: i=0x55; //in2 3.75db
break;
case tuner_code: i=0x4d; //in2 7.5db
break;
// default:
// ;
}
if(loud_peg ==0)
i = i | 0x04;
send_2314_8bit(i);
send_2314_8bit(tone_tab[tre_mem]|0x70);
send_2314_8bit(tone_tab[bas_mem]|0x60);
stop2314();
}
void pt2314_setup(void)
{
input_mem = aux_code;
vol_mem = 0x1c;
tre_mem = 0x07;
bas_mem = 0x08;
L_mem=R_mem = 0;
start2314();
send_2314_8bit(0x88);
send_2314_8bit(0xc0);
send_2314_8bit(0xe0);
stop2314();
delay560us();
pt2314();
}
