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发表于 2008-7-28 17:45:23
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显示全部楼层
看了楼主的的模拟SPI时序,来发一个纯硬件SPI的ISD17xx驱动,由于我只用到了其中放音功能,所以录音,及擦除功能没有使用,所以这些函数没有加上去,如果你要用加起来应该很简单的. 程序用M8做的实验,我的电路中有一个LED和一个按键,实际产品用的M64,编译器用的IAR(希望发此贴不会引起关于什么版权问题,所在公司小买不起正版).关于播放地址的表格是实际产品的表格,你要自己修改以适应你的语音内容,电路图参考楼主的,没什么东西,通讯接口连好就OK,通讯速率250k(示波器上测量的,不是计算结果)不知能否再快点
//***************************************************************************************************
//MYDECLARE.H
#ifndef __MYDECLARE__
#define __MYDECLARE__
#include <avr_macros.h> //引用宏定义
#include <intrinsics.h> //引用本征库函数
#include <stdbool.h> //引用BOOL变量
//简化本征库函数的书写
#define NOP __no_operation //空操作
#define SLEEP __sleep //休眠
#define CLI __disable_interrupt //禁止中断
#define SEI __enable_interrupt //充许中断
#define WDR __watchdog_reset //看门狗复位
//==============================================================================
#define CPU_F 8000000ULL //8M的晶振
#define DELAY_US(USCNT) __delay_cycles(((CPU_F)*(USCNT)/1000000))
typedef unsigned char UCHAR;
typedef unsigned int UINT;
typedef unsigned long ULONG;
typedef unsigned char BYTE;
typedef unsigned int WORD;
typedef unsigned long DWORD;
#endif
//***************************************************************************************************
//ISD1700.H
#ifndef __ISD1700__
#define __ISD1700__
//==============================================================================
//语音段干起始地址
#define VOICE_SEGMENT1 0x10 //声音片断1地址
#define VOICE_SEGMENT2 0x1E
#define VOICE_SEGMENT3 0x26
#define VOICE_SEGMENT4 0x2F
#define VOICE_SEGMENT5 0x38
#define VOICE_SEGMENT6 0x49
#define VOICE_SEGMENT7 0x51
#define VOICE_SEGMENT8 0x58
#define VOICE_SEGMENT9 0x61
#define VOICE_SEGMENT10 0x72
#define VOICE_SEGMENT11 0x7B
#define MAX_SOUND_ID 0x0A //最大声音索引,数组中最后一位为结束地址
#define INVALID_SOUND_ID 0xFF //无效声音ID
//==============================================================================
//语音芯片控制命令
#define ISD_PWRUP 0x01 //ISD芯片上电
#define ISD_PU 0x01
#define ISD_STOP 0x02 //停止当前操作
#define ISD_RESET 0x03 //ISD芯片复位
#define ISD_CLRINT 0x04 //清除EOM标志和中断信号
#define ISD_RDSTATUS 0x05 //返回状态寄存器的内容
#define ISD_RDPLAYPTR 0x06 //返回状态和放音指针
#define ISD_PWRDOWN 0x07 //芯片下电
#define ISD_PD 0x07
#define ISD_RDRECPTR 0x08 //返回状态和录音指针
#define ISD_RDDEVID 0x09 //读取芯片ID
#define ISD_PLAY 0x40 //从当前地址放音
#define ISD_REC 0x41 //从当前地址录音
#define ISD_ERASE 0x42 //擦除当前段
#define ISD_ERASEALL 0x43 //擦除所有当前段
#define ISD_RDAPC 0x44 //返回状态寄存器和
#define ISD_WRAPC 0x45 //将<D11:D0>写入APC寄存器
#define ISD_WRAPCVOL 0x65 //将<D11:D0>写入APC寄存器,并由<D2:D0>控制音量
#define ISD_WRNVCFG 0x46 //将APC的内容写非易失存储器
#define ISD_LDNVCFG 0x47 //将NVCFG的内容装入APC中
#define ISD_FWD 0x48 //将放音指针指向下一段语音起始地址
#define ISD_CHKMEM 0x49 //检测环形存储
#define ISD_ENEXTCLK 0x4A //使能外部时钟
#define ISD_SETPLAY 0x80 //按指定地址放音
#define ISD_SETREC 0x81 //按指定地址录音
#define ISD_SETERASE 0x82 //按指定地址擦除
//==============================================================================
struct ISD_STATUS
{
unsigned char SR0_L;
unsigned char SR0_H;
unsigned char SR1;
};
//==============================================================================
void isd_init(void); //芯片初始化
void isd_setapc2(void); //设置APC(带音量)
void isd_reset(void); //芯片复位
void isd_pu(void); //芯片上电
UCHAR isd_senddata(UCHAR data); //发送一个字节
bool isd_is_free(void); //返回当前是否为空闲状态
bool isd_is_done(void); //当前操作是否完成
void isd_play(void); //播放当前段;
void isd_wrnvcfg(void); //APC配置写入永久记录
void isd_clearint(void); //清除中断
UCHAR isd_readid(void); //读芯片ID
void isd_stop(void); //停止
void isd_pd(void); //芯片掉电
void isd_setplay(UINT st_addr, UINT end_addr); //播放指定段
struct ISD_STATUS isd_rdstatus(void); //读取状太,返回在一个全局结构中
void isd_playid(UCHAR SoundID); //播放指定片断
void isd_forward(void); //播放指针跳到下一首
//==============================================================================
#endif
//***************************************************************************************************
//ISD1700.C
#include <iom8.h>
#include "mydeclare.h"
#include "isd1700.h"
#define SpiSS PORTB_Bit2 //定义SS端口
//static struct ISD_STATTUS isd_status; //ISD 状诚返回结果
//==============================================================================
//语音片断地址表
__flash static unsigned char isd_seg_addr[12]=
{
//存放播放地址起始位置,结束位置定为上一位置结束位置
0x10, 0x1E, 0x26, 0x2F,
0x38, 0x49, 0x51, 0x58,
0x61, 0x72, 0x7B, 0xFF
};
//==============================================================================
void isd_init(void) //初始化ISD1700
{
isd_reset();
while(!isd_is_free());
isd_pu();
while(!isd_is_free());
isd_setapc2();
while(!isd_is_free());
isd_clearint();
}
//==============================================================================
//ISD1700发送一字节的数据
UCHAR isd_senddata(UCHAR data) //要在外部保证SS = 0
{
SPDR = data;
while((SPSR & 0x80) == 0);
data = SPDR;
return data;
}
//==============================================================================
//检测ISD1700当前是否为空闲状态
bool isd_is_free() //
{
UCHAR status;
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_RDSTATUS);
isd_senddata(0x00);
status = isd_senddata(0x00);
SpiSS = 1;
if((status & 0x01) == 0x01)
return true;
else
return false;
}
//==============================================================================
void isd_setapc2(void)
{
//初始化APC寄存器,音量最大,关模拟输出,遇到EOM标志自动结束
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_WRAPCVOL);
isd_senddata(0xA0); //音量最大
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
void isd_reset(void) //复位MCU
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_RESET);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
void isd_pu(void) //芯片上电
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_PU);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
void isd_wrnvcfg(void) //写APC寄存器到非易失存储器
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_WRNVCFG);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
void isd_play() //播放当前段
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_PLAY);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
void isd_clearint(void)
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_CLRINT);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
UCHAR isd_readid(void)
{
unsigned char isd_id;
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_RDDEVID);
isd_senddata(0x00);
isd_id = isd_senddata(0x00);
SpiSS = 1;
return isd_id;
}
//==============================================================================
void isd_stop(void) //停止当前操作
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_STOP);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
void isd_pd(void) //芯片下电
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_PD);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
bool isd_is_done(void)
{
unsigned char SR0_L;
SpiSS = 0;
DELAY_US(5);
SR0_L = isd_senddata(ISD_RDSTATUS);
isd_senddata(0x00);
isd_senddata(0x00);
SpiSS = 1;
if((SR0_L & 0x10) != 0) //SR0_L_bit4 为INT位表示操作是否完成
return true;
else
return false;
}
//==============================================================================
struct ISD_STATUS isd_rdstatus(void)
{
struct ISD_STATUS status;
SpiSS = 0;
DELAY_US(5);
status.SR0_L = isd_senddata(ISD_RDSTATUS);
status.SR0_H = isd_senddata(0x00);
status.SR1 = isd_senddata(0x00);
SpiSS = 1;
return status;
}
//==============================================================================
void isd_forward(void)
{
SpiSS = 0;
DELAY_US(5);
isd_senddata(ISD_FWD);
isd_senddata(0x00);
SpiSS = 1;
}
//==============================================================================
void isd_setplay(UINT st_addr, UINT end_addr) //播放指定地址
{
SpiSS = 0;
DELAY_US(5);
//isd_clearint();
//while(!isd_is_free()); //等待空闲
isd_senddata(ISD_SETPLAY);
isd_senddata(0x00);
isd_senddata(st_addr & 0xFF);
isd_senddata(st_addr >> 8);
isd_senddata(end_addr & 0xFF);
isd_senddata(end_addr >> 8);
SpiSS = 1;
}
//==============================================================================
void isd_playid(UCHAR SoundID)
{
unsigned int start_addr, end_addr;
if(SoundID > MAX_SOUND_ID)
{
SoundID = MAX_SOUND_ID;
}
start_addr = isd_seg_addr[SoundID];
end_addr = isd_seg_addr[SoundID + 1] -1;
SpiSS = 0;
DELAY_US(5);
//isd_clearint();
//while(!isd_is_free()); //等待空闲
isd_senddata(ISD_SETPLAY);
isd_senddata(0x00);
isd_senddata(start_addr & 0xFF);
isd_senddata(start_addr >> 8);
isd_senddata(end_addr & 0xFF);
isd_senddata(end_addr >> 8);
SpiSS = 1;
}
//***************************************************************************************************
//MAIN.C
/*通讯过程中缓冲区处理方法
*/
#include <iom8.h> //引用端口及SFR的位定义
#include "MyDeclare.h" //引用自定义头文件
#include "ISD1700.h"
#define LED PORTD_Bit0 //LED
#define KEY PINB_Bit0 //按键
//==============================================================================
//信息
__root unsigned char __flash VerInfo[]@0x1FE0={"Ver 1.0 tomhe666 "__DATE__};
static unsigned char SoundID; //当前需播放的声音片断ID
static unsigned char keylock=0;
//==============================================================================
void main( void )
{
__disable_interrupt(); //禁止中断
DDRB = 0x2C; //SPI端口初始化
PORTB = 0x15; //开启按键上拉
DDRD = 0x01;
PORTD = 0x01; //亮灯
TCCR0 = 0x05; //系统时钟1024分频
TCNT0 = 0;
SPCR = 0x7E; //SPI使能,SCK空闲保持为高电平,数据在上升沿采样,速率为1:128(FOSC/128)
SPSR = 0x01; //使能倍速
DELAY_US(500000);
isd_init(); //初始化语音芯片
while(!isd_is_free());
isd_playid(2);
while(1)
{
TCNT0 = 0;
if((KEY) == 1)
{
keylock = 0;
LED = 0;
}
else
{
LED = 1;
if(keylock != 1)
{
//process key
SoundID++;
if(SoundID > MAX_SOUND_ID)SoundID = 0;
while(!isd_is_free());
isd_playid(SoundID);
keylock = 1;
}
}
while(TCNT0 < 78);
}
} |
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