利用 SPCE061A单片机，扩展 SD卡设备，实现录放音功能。要求具有下述功能：

1. SPCE061A对 SD卡的读写操作

a) SPCE061A对 SD卡的操作方式为 SPI模式；

b) 提供 SD卡插入检测功能，并进行语音提示；

c) 提供 SD卡写保护检测功能，并进行语音提示；

d) 可以对 SD卡进行初始化、扇区写、扇区读、扇区擦除、得到 SD卡的容量信息等操作；

2. 录放音功能

a) 录音数据存储在 SD卡中；

b) 支持多段录音；

c) 放音支持“上一曲”、“下一曲”；

d) 可以删除所有的录音片断，重新开始录音； -Using SPCE061A, expansion SD card equipment, audio recording and playback function. Required to have the following functions: 1. Of SPCE061A SD card read and write operations a) the operation of SPCE061A SD card in SPI mode　b) provide the SD card into the detection function, and voice prompt　c) the SD card write protection detection and voice prompts　d) the SD card can be initialized sector write sector Reading sector erase SD card capacity information and other operating　2 audio recording and playback functions a) recording data stored in the SD card　b) support for multi-segment recording　c) playback support " on a"　next one "　 d) can delete all the audio clips, and re-start recording