sdhal.h
上传用户:tsengnan
上传日期:2010-03-31
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- /**--------------File Info-------------------------------------------------------------------------------
- ** File name: sdhal.h
- ** Last modified Date: 2005-1-6
- ** Last Version: V1.0
- ** Descriptions: sd 卡驱动软件包: 硬件抽象层 ---- SPI操作函数头文件
- ** Soft Packet of SD Card Driver: hard abstrast layer ---- function of SPI operation
- ** header file
- **------------------------------------------------------------------------------------------------------
- ** Created by: gan peng
- ** Created date: 2005-1-6
- ** Version: V1.0
- ** Descriptions: The original version
- **
- **------------------------------------------------------------------------------------------------------
- ** Modified by:
- ** Modified date:
- ** Version:
- ** Descriptions:
- **
- **------------------------------------------------------------------------------------------------------
- ** Modified by:
- ** Modified date:
- ** Version:
- ** Descriptions:
- **
- ********************************************************************************************************/
- /* 检测卡是否完全插入 check weather card is insert entirely */
- extern INT8U SD_ChkCard(void);
- extern INT8U SD_ChkCardWP(void);
- /* 初始化访问SD卡的硬件初始化 initialize the hardware that access sd card */
- extern void SD_HardWareInit(void);
- /* 设置SPI的时钟小于400kHZ set the clock of SPI less than 400kHZ */
- extern void SPI_Clk400k(void);
- /* 设置SPI的clock到最大值 set the clock of SPI to maximum */
- extern void SPI_ClkToMax(void);
- /* 通过SPI接口发送一个字节 send a byte by SPI interface */
- extern void SPI_SendByte(INT8U byte);
- /* 从SPI接口接收一个字节 receive a byte from SPI interface */
- extern INT8U SPI_RecByte(void);
- /* 片选SPI从机 select the SPI slave */
- extern void SPI_CS_Assert(void);
- /* 不片选SPI从机 not select the SPI slave */
- extern void SPI_CS_Deassert(void);