原创 外接看门狗X5025

#ifndef __X5045_H__
#define __X5045_H__

//X5045
#define WREN 0x06 //写允许
#define WRDI 0x04 //写禁止
#define RDSR 0x05 //读状态寄存器
#define WRSR 0x01 //写状态寄存器，看门狗和块锁定
#define READ 0x03 //从选定的开始地址单元中读数据  0 0 0 0 A8 0 1 1
#define WRITE 0x02 //向选定的开始地址单元写入数据，1~16字节  0 0 0 0 A8 0 1 0

#define WIP  0x01 //状态寄存器0位，器件忙标志，为1器件忙
#define WEL  0x02 //状态寄存器1位，写允许标志，为1允许
#define BL_DIABLE 0x00 //块锁定位，状态寄存器2、3位，00不保护
#define BL_14  0x04 //块锁定位，状态寄存器2、3位，01保护$180H-$1FFH
#define BL_12  0x08 //块锁定位，状态寄存器2、3位，10保护$100H-$1FFH
#define BL_FULL  0x0C //块锁定位，状态寄存器2、3位，00保护$000H-$1FFH
#define WD_14  0x00 //看门狗控制位，状态寄存器4、5位，00为1.4s
#define WD_06  0x10 //看门狗控制位，状态寄存器4、5位，01为600ms
#define WD_02  0x20 //看门狗控制位，状态寄存器4、5位，10为200ms
#define WD_DISABLE 0x30 //看门狗控制位，状态寄存器4、5位，11禁止

#define RESET_X5045_WATCHDOG() {X5045_CS = 1; X5045_CS = 0; X5045_CS = 1;}

sbit X5045_SCK = P2^5;  //25045时钟
sbit X5045_DI = P2^4;  //25045输入
sbit X5045_DO = P2^6;  //25045输出
sbit X5045_CS = P3^5;  //25045片选

extern void x5045_out_byte(unsigned char byte);
extern unsigned char x5045_in_byte();

extern unsigned char x5045_read_register();
extern void x5045_write_register(unsigned char command);

extern void x5045_write_bytes(unsigned char idata * ptr, unsigned char bytes, unsigned char first_address, unsigned char is_upper);
extern void x5045_read_bytes(unsigned char idata * ptr,  unsigned char bytes, unsigned char first_address, unsigned char is_upper);

#endif