audio.c

语音芯片的C51操作程序: 指令 8位控制码

 
//ISD4004 DRIVER 

#include"mcu-define.h" 
#include"delay.h" 
#include"isd4004.h" 

sbit ISD4XXX_SCLK=P3^6; 
sbit ISD4XXX_MISO =P3^4; 
sbit ISD4XXX_MOSI =P3^5; 
sbit ISD4XXX_SS =P3^7; 


//ISD4004 命令码 
/* 
指令 8位控制码，16位地址码 操作摘 
要 
POWERUP 00100xxx（xxxxxxxxxxxxxxxx） 上电：等待TPUD后器件可以 
工作 
SET PLAY 11100xxx（A15~A0） 从指令地址开始放音，须后 
跟PLAY指令，使放音继续 
PLAY 11110xxx（xxxxxxxxxxxxxxx） 从当前地址开始放音（直至 
EOM或OVF） 
SET REC 10110xxx（A15~A0） 从指定地址开始录 
音，须后跟REC指令，使录音继续 
REC 110110（xxxxxxxxxxxxxxx） 从当前地址开始录 
音（直至OVF或停止） 
SET MC 11101xxx（A15~A0） 从指定地址开始快 
进，须后跟MC指令，使快进继续 
MC 11111xxx（xxxxxxxxxxxxxxx） 执行快进，直到 
EOM，若再无信息，则进入OVF状态 
STOP 0x110xxx（xxxxxxxxxxxxxxx） 停止当前操作 
STOP PWRDN 0X01Xxxx（xxxxxxxxxxxxxxx） 停止当前的操作并掉电 
RINT 0X110xxx（xxxxxxxxxxxxxxxx） 读状态；OVF和EOM 

*/ 
#define ISD4XXX_POWER_UP 0x20 
#define ISD4XXX_SET_PLAY 0xe0 
#define ISD4XXX_PLAY 0xf0 
#define ISD4XXX_SET_REC 0xb0 
#define ISD4XXX_REC 0xd8 
#define ISD4XXX_SET_MC 0xe8 
#define ISD4XXX_MC 0xf8 
#define ISD4XXX_STOP 0x30 
#define ISD4XXX_STOP_PWRDN 0x10 

#define ISD4XXX_RINT 0x30 



unsigned char isd_spi(ISD_COMMAND * isdcommand) 
{ 
unsigned char i; 
unsigned long miso; 
unsigned long mosi=(unsigned long *)isdcommand; 
ISD4XXX_MISO=1; 
ISD4XXX_SCLK=0; 
ISD4XXX_SS=0; 
miso=0; 
for (i=0;i<24;i++) 
{ 
miso<<=1; 
miso |=(unsigned long )ISD4XXX_MISO; 

if (mosi & 0x800000 ==0x1) ISD4XXX_MOSI =1; 
else ISD4XXX_MOSI = 0; 

ISD4XXX_SCLK=1; 
mosi <<= 1; 
ISD4XXX_SCLK=0; 
} 
ISD4XXX_SCLK=1; 

return (char *)(miso+1); 
} 

void ISD4XXX_Record(unsigned int address) 
{ 
// 1. power up 
// 2. TPUD(25ms) *2; 
// 3. power up; 
// 4. set record address = 00; 
// 5. rec command . 
ISD_COMMAND isd_command; 
isd_command.command_code=ISD4XXX_POWER_UP; 
// isd_command.int_address=0; 
isd_spi(&isd_command); 
soft_delay_10ms(3); 
soft_delay_10ms(3); 

isd_spi(&isd_command); 

isd_command.command_code=ISD4XXX_SET_REC; 
isd_command.int_address=address; 
isd_spi(&isd_command); 

isd_command.command_code=ISD4XXX_REC ; 
// isd_command.int_address=0; 
isd_spi(&isd_command); 
} 

void ISD4XXX_Play(unsigned int address) 
{ 
// 1. POWER UP 
// 2. Delay tpuid. 
// 3. SET PLAY WITH ADDRESS 0; 
// 4. SEND play command. 
ISD_COMMAND isd_command; 
isd_command.command_code=ISD4XXX_POWER_UP; 
// isd_command.int_address=0; 
isd_spi(&isd_command); 
soft_delay_10ms(3); 

isd_command.command_code=ISD4XXX_SET_PLAY; 
isd_command.int_address=address; 
isd_spi(&isd_command); 

isd_command.command_code=ISD4XXX_PLAY; 
// isd_command.int_address=0; 
isd_spi(&isd_command); 
} 

void ISD4XXX_Stop(void) 
{ 
ISD_COMMAND isd_command; 
isd_command.command_code=ISD4XXX_STOP; 
isd_spi(&isd_command); 
} 

void ISD4XXX_PowerOff(void) 
{ 
ISD_COMMAND isd_command; 
isd_command.command_code=0x08; 
isd_spi(&isd_command); 
} 

void ISD4XXX_PowerOn(void) 
{ 
ISD_COMMAND isd_command; 
isd_command.command_code=0x04; 
isd_spi(&isd_command); 
} 


static code unsigned int address_tab[22]= 
{ 
0, 
1, 
2, 
3, 
4, 
5, 
6, 
7, 
8, 
9, 
10, 
11, 
12, 
13, 
14, 
15, 
16, 
17, 
18, 
19, 
20, 
21 
}; 

void PlaySound(unsigned char index) 
{ 

ISD4XXX_Play(address_tab[index]); 
} 
//end of file