sc5020b语音ic驱动

ID:170352 · 发表于 2017-3-13 17:09

/*
*******************************************************************
* file:sc5020b.c
*
* func:sc5020b sound chip driver
*
* time:2017.03.01
*
* auth:lzx
*******************************************************************
*/
/*file*/
#include"is32u320a.h" //the define of is32u320a register address
#include"sc5020b.h" //the extern interface
#include"is32u320a_gpio.h" //the func of io_config library
/*flag*/
#define G_SC5020B_BUSY_DIRECTION GPIO33 //use GPIO33 to be the sc5020b_busy_direction
#define G_SC5020B_SDA_DIRECTION GPIO34 //use GPIO34 to be the sc5020b_sda_direction
#define G_SC5020B_BUSY_IS_NOBUSY GPIODATA2&0X01 //make sure G_SC5020B_BUSY is busy or not
/*
*************************************
* name:void sc5020b_io_initial()
*
* func:initiate the sc5020b_io
*
* time:2017.03.01
*
* auth:lzx
*************************************
*/
void sc5020b_io_initial(void)
{
SetGpioXIn(G_SC5020B_BUSY_DIRECTION); //G_SC5020B_BUSY is an input
SetGpioXOut(G_SC5020B_SDA_DIRECTION); //G_SC5020B_SDA is an output
}
/*
*************************************
* name:void sc5020b_waitbusy(void)
*
* func:wait until sc5020b free
*
* time:2017.03.01
*
* auth:lzx
*************************************
*/
void sc5020b_waitbusy(void)
{
unsigned int times;
for(times=0;times<50;times++) //the max time is 5 seconds,circle will be ended once more than max time
{
//sc5020b_delayms(100); //the time gap between each sound segment must be more than 100ms
if(G_SC5020B_BUSY_IS_NOBUSY) break; //when G_SC5020B_BUSY is free,the chip can be sent commond
}
}
/*
*************************************
* name:sc5020b_sendcommand(u8 dat)
*
* func:send command to sc5020b
*
* time:2017.03.01
*
* auth:lzx
*************************************
*/
void sc5020b_sendcommand(unsigned char dat)
{
char temp; //be used to make sure the each bit value of dat
sc5020b_waitbusy(); //wait until sc5020b free,static wait time is 100ms
//sc5020b_delayms(5); //wait for 5 micro second
for(temp=0;temp<8;temp++)
{
SetGpioXHigh(G_SC5020B_SDA_DIRECTION); //pull up the G_SC5020B_SDA
if(dat&0x01)
{ //send 1:high/low=3:1
//sc5020b_delayus(1500);//delay1500us
SetGpioXLow(G_SC5020B_SDA_DIRECTION);
//sc5020b_delayus(500); //delay500us
}
else
{ //send 0:high/low=1:3
//sc5020b_delayus(500); //delay500us
SetGpioXLow(G_SC5020B_SDA_DIRECTION);
//sc5020b_delayus(1500);//delay1500us
}
dat>>=1;
}
}

复制代码

ID:564486 · 发表于 2019-6-21 10:50

哥这哥音量怎么调节呀？手册上写的发E0-EF调，但是不管用

帐号		自动登录	找回密码
密码			立即注册