东北大学嵌入式课程设计电子密码锁程序.docVIP

#include710defs.h #includeAC97.h #includeHB_it.h #include stdio.h #include main.h #include lcd_pattern.h extern int c; extern U8 shuru; extern U8 a[7]; extern U8 b[7]; extern int p; extern int c; /*播放缓冲区的首地址*/ #define base_addres 0x100000 /*播放数据*/ UINT8 PlayData[] = { #include 8k.dat }; UINT8 PlayData1[] ={ #include 7k.dat }; UINT32 PCM_QUEUE_LEN = (512*1024); UINT _uPlayVol = 0x1f1f; UINT16 sPlayVolume = 0; BOOL PlayLastBlock; volatile UINT _uPcmQHead; /*延时函数*/ static void Delay1(int nCnt) { volatile int loop; for (loop=0; loopnCnt; loop++); } /*播放函数1*/ INT PlayCallback(UINT8 *pucBuff, UINT32 uDataLen) { UINT nLen; nLen = PCM_QUEUE_LEN - _uPcmQHead; /*将数据从PCM队列中取出放到DMA缓存区*/ if (nLen = uDataLen) { memcpy(pucBuff, PlayData[_uPcmQHead], uDataLen); _uPcmQHead = (_uPcmQHead + uDataLen) % PCM_QUEUE_LEN; } else { memcpy(pucBuff, PlayData[_uPcmQHead], nLen); memcpy(pucBuff[nLen], PlayData, uDataLen - nLen); _uPcmQHead = uDataLen - nLen; } return 0; } /*播放函数2*/ INT PlayCallback1(UINT8 *pucBuff, UINT32 uDataLen) { UINT nLen; nLen = PCM_QUEUE_LEN - _uPcmQHead; /*将数据从PCM队列中取出放到DMA缓存区*/ if (nLen = uDataLen) { memcpy(pucBuff, PlayData1[_uPcmQHead], uDataLen); _uPcmQHead = (_uPcmQHead + uDataLen) % PCM_QUEUE_LEN; } else { memcpy(pucBuff, PlayData1[_uPcmQHead], nLen); memcpy(pucBuff[nLen], PlayData1, uDataLen - nLen); _uPcmQHead = uDataLen - nLen; } return 0; } /* 读AC97寄存器*/ static UINT16 ac97_read_register(INT nIdx) { UINT volatile nWait; /* 置起R_WB位并写入寄存器地址 */ REG_ACTL_ACOS1 = (0x80 | nIdx); /* 设置帧是否有效和有效的时隙 */ REG_ACTL_ACOS0 = 0x11; Delay1(100); /* 检查AC_ACTL_ACCON的AC_R_FINISH位是否被置高，若被置高，说明读数据缓存区已经准备好给CPU读取 */ for (nWait = 0; nWait 0x10000; nWait++) { if (REG_ACTL_ACCON AC_