at25f4096.c

来自「单片机c语言程序设计100例--基于PIC+PROTEUS」· C语言 代码 · 共 92 行

//-----------------------------------------------------------------
//  名称:用SPI接口读写AT25F4096子程序
//-----------------------------------------------------------------
#include <pic18.h>
#define INT8U   unsigned char
#define INT16U  unsigned int
#define INT32U  unsigned long
#define _XTAL_FREQ 8000000UL
//AT25F4096指令集
#define WREN            0x06   //使能写
#define WRDI            0x04   //禁止写
#define RDSR            0x05   //读状态
#define WRSR            0x01   //写状态
#define READ            0x03   //读字节
#define PROGRAM         0x02   //写字节
#define SECTOR_ERASE    0x52   //删除区域数据
#define CHIP_ERASE      0x62   //删除芯片数据
#define RDID            0x15   //读厂商与产品ID
//SPI使能与禁用
#define SPI_EN() RD0 = 0
#define SPI_DI() RD0 = 1
//-----------------------------------------------------------------
// SPI主机初始化
//-----------------------------------------------------------------
void SPI_MasterInit()
{


}

//-----------------------------------------------------------------
// SPI数据传输
//-----------------------------------------------------------------
INT8U SPI_Transmit(INT8U dat)
{


}

//-----------------------------------------------------------------
// 读AT25F4096芯片状态
//-----------------------------------------------------------------
INT8U Read_SPI_Status()
{


}

//-----------------------------------------------------------------
// AT25F4096忙等待
//-----------------------------------------------------------------
void Busy_Wait()
{  


}

//-----------------------------------------------------------------
// 向AT25F4096写入三个字节的地址0x000000-0x07FFFF (有效位为19位)
//-----------------------------------------------------------------
void Write_3_Bytes_AT25F4096_Address(INT32U addr)
{


}

//-----------------------------------------------------------------
// 从指定地址读单字节
//-----------------------------------------------------------------
INT8U Read_Byte_FROM_AT25F4096(INT32U addr)
{


}

//-----------------------------------------------------------------
// 从指定地址读多字节到缓冲
//-----------------------------------------------------------------
void Read_Bytes_from_SPI_MEM(INT32U addr, INT8U *p, INT16U len)
{


}

//-----------------------------------------------------------------
// 向AT25F4096指定地址写入单字节数据
//-----------------------------------------------------------------
void Write_Byte_TO_AT25F4096(INT32U addr,INT8U dat)
{	


}