[古董贴][范例]使用595配合165级联模块扩展端口（硬件SPI） (amobbs.com 阿莫电子技术论坛) -

Gorgon_Meducer 发表于 2006-8-21 20:28:17

[古董贴][范例]使用595配合165级联模块扩展端口（硬件SPI）

前面看到很多大侠讨论单片机扩展端口的方法，我这里也插一嘴，将我们习惯使用的一种利用595和165配对扩展输入输出端口的方法拿出来和大家交流。

其实，思路很简单，595和165在时钟极性上非常相似，都是上升沿采样/置数，同时也都需要一个控制信号的上升沿来锁存并行数据，很自然的，我们就想到利用硬件SPI的主机模式配合对SS引脚的控制来实现一次数据交换同时读取和置数的操作，并且利用595和165的可级联特性，特别适合端口扩展。

以下是扩展模块的原理图

http://cache.amobbs.com/bbs_upload782111/files_6/armok01126915.GIF

以下是驱动该结构的头文件（测试通过外部16M，1/4分频）

#ifndef _USE_VIRTUAL_PORT_H_

#define _USE_VIRTUAL_PORT_H_

/***********************************************************

*函数说明：硬件SPI虚拟端口底层驱动函数库             *

*版本： v1.00                                     *

*作者：傻孩子                                     *

*创建日期：2006年7月30日                               *

* -------------------------------------------------------- *

*[支持库]                                              *

*支持库名称：RD_MacroAndConst.h                      *

*需要版本：v0.04 &abv                               *

*函数库说明：系统常用宏定义库                         *

* -------------------------------------------------------- *

*[版本更新]                                           *

* -------------------------------------------------------- *

*[版本历史]                                           *

*    v1.00 支持595和165成队及联，支持硬件SPI传输模式， *

*          支持通过宏定义设定虚拟端口数量；虚拟端口同*

*          时支持读取和写两种模式，并且兼容AVR普通端 *

*          口的操作方式，支持虚拟端口位操作。       *

* -------------------------------------------------------- *

*[使用说明]                                           *

*       1、调用该头文件之前，可以通过宏VP_PORT_COUNT *

*          来设定虚拟端口的数目，这里的数目8个引脚算 *

*          一个端口。                               *

*       2、通过宏VP_SS来设定SS脚，这里需要位操作支持。 *

*       3、将宏VIRTUALPORT_INSERT_SPI_STC_ISR_CODE插 *

*          入到SPI通讯完成中断处理程序中。          *

*       4、虚拟端口从PORTH和PINH开始，每次需要刷新端 *

*          口时只需要调用宏REFRESH_VIRTUAL_PORT，特别*

*          说明，在中断处理程序里面调用该宏时要打开全*

*          局中断SEI();                            *

***********************************************************/

# include <RD_MacroAndConst.h>

/********************

* 系统宏定义*

********************/

/*------------------*

* 常数宏定义*

*------------------*/

#ifndef VP_PORT_COUNT

#define VP_PORT_COUNT 2

#endif

#if VP_PORT_COUNT-1 >= 0

# define PORTH (*((volatile unsigned char *)&VP_PORTx))

# define PINH (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-2 >= 0

# define PORTI (*((volatile unsigned char *)&VP_PORTx))

# define PINI (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-3 >= 0

# define PORTJ (*((volatile unsigned char *)&VP_PORTx))

# define PINJ (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-4 >= 0

# define PORTK (*((volatile unsigned char *)&VP_PORTx))

# define PINK (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-5 >= 0

# define PORTL (*((volatile unsigned char *)&VP_PORTx))

# define PINL (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-6 >= 0

# define PORTM (*((volatile unsigned char *)&VP_PORTx))

# define PINM (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-7 >= 0

# define PORTN (*((volatile unsigned char *)&VP_PORTx))

# define PINN (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-8 >= 0

# define PORTO (*((volatile unsigned char *)&VP_PORTx))

# define PINO (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-9 >= 0

# define PORTP (*((volatile unsigned char *)&VP_PORTx))

# define PINP (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-10 >= 0

# define PORTQ (*((volatile unsigned char *)&VP_PORTx))

# define PINQ (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-11 >= 0

# define PORTR (*((volatile unsigned char *)&VP_PORTx))

# define PINR (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-12 >= 0

# define PORTS (*((volatile unsigned char *)&VP_PORTx))

# define PINS (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-13 >= 0

# define PORTT (*((volatile unsigned char *)&VP_PORTx))

# define PINT (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-14 >= 0

# define PORTU (*((volatile unsigned char *)&VP_PORTx))

# define PINU (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-15 >= 0

# define PORTV (*((volatile unsigned char *)&VP_PORTx))

# define PINV (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-16 >= 0

# define PORTW (*((volatile unsigned char *)&VP_PORTx))

# define PINW (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-17 >= 0

# define PORTX (*((volatile unsigned char *)&VP_PORTx))

# define PINX (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-18 >= 0

# define PORTY (*((volatile unsigned char *)&VP_PORTx))

# define PINY (*((volatile unsigned char *)&VP_PINx))

#endif

#if VP_PORT_COUNT-19 >= 0

# define PORTZ (*((volatile unsigned char *)&VP_PORTx))

# define PINZ (*((volatile unsigned char *)&VP_PINx))

#endif

#ifdef PORTH

# define PORTH_BIT SET_BIT8_FORMAT(PORTH)

#endif

#ifdef PORTI

# define PORTI_BIT SET_BIT8_FORMAT(PORTI)

#endif

#ifdef PORTJ

# define PORTJ_BIT SET_BIT8_FORMAT(PORTJ)

#endif

#ifdef PORTK

# define PORTK_BIT SET_BIT8_FORMAT(PORTK)

#endif

#ifdef PORTL

# define PORTL_BIT SET_BIT8_FORMAT(PORTL)

#endif

#ifdef PORTM

# define PORTM_BIT SET_BIT8_FORMAT(PORTM)

#endif

#ifdef PORTN

# define PORTN_BIT SET_BIT8_FORMAT(PORTN)

#endif

#ifdef PORTO

# define PORTO_BIT SET_BIT8_FORMAT(PORTO)

#endif

#ifdef PORTP

# define PORTP_BIT SET_BIT8_FORMAT(PORTP)

#endif

#ifdef PORTQ

# define PORTQ_BIT SET_BIT8_FORMAT(PORTQ)

#endif

#ifdef PORTR

# define PORTR_BIT SET_BIT8_FORMAT(PORTR)

#endif

#ifdef PORTS

# define PORTS_BIT SET_BIT8_FORMAT(PORTS)

#endif

#ifdef PORTT

# define PORTT_BIT SET_BIT8_FORMAT(PORTT)

#endif

#ifdef PORTU

# define PORTU_BIT SET_BIT8_FORMAT(PORTU)

#endif

#ifdef PORTV

# define PORTV_BIT SET_BIT8_FORMAT(PORTV)

#endif

#ifdef PORTW

# define PORTW_BIT SET_BIT8_FORMAT(PORTW)

#endif

#ifdef PORTX

# define PORTX_BIT SET_BIT8_FORMAT(PORTX)

#endif

#ifdef PORTY

# define PORTY_BIT SET_BIT8_FORMAT(PORTY)

#endif

#ifdef PORTZ

# define PORTZ_BIT SET_BIT8_FORMAT(PORTZ)

#endif

#ifdef PINH

# define PINH_BIT SET_BIT8_FORMAT(PINH)

#endif

#ifdef PINI

# define PINI_BIT SET_BIT8_FORMAT(PINI)

#endif

#ifdef PINJ

# define PINJ_BIT SET_BIT8_FORMAT(PINJ)

#endif

#ifdef PINK

# define PINK_BIT SET_BIT8_FORMAT(PINK)

#endif

#ifdef PINL

# define PINL_BIT SET_BIT8_FORMAT(PINL)

#endif

#ifdef PINM

# define PINM_BIT SET_BIT8_FORMAT(PINM)

#endif

#ifdef PINN

# define PINN_BIT SET_BIT8_FORMAT(PINN)

#endif

#ifdef PINO

# define PINO_BIT SET_BIT8_FORMAT(PINO)

#endif

#ifdef PINP

# define PINP_BIT SET_BIT8_FORMAT(PINP)

#endif

#ifdef PINQ

# define PINQ_BIT SET_BIT8_FORMAT(PINQ)

#endif

#ifdef PINR

# define PINR_BIT SET_BIT8_FORMAT(PINR)

#endif

#ifdef PINS

# define PINS_BIT SET_BIT8_FORMAT(PINS)

#endif

#ifdef PINT

# define PINT_BIT SET_BIT8_FORMAT(PINT)

#endif

#ifdef PINU

# define PINU_BIT SET_BIT8_FORMAT(PINU)

#endif

#ifdef PINV

# define PINV_BIT SET_BIT8_FORMAT(PINV)

#endif

#ifdef PINW

# define PINW_BIT SET_BIT8_FORMAT(PINW)

#endif

#ifdef PINX

# define PINX_BIT SET_BIT8_FORMAT(PINX)

#endif

#ifdef PINY

# define PINY_BIT SET_BIT8_FORMAT(PINY)

#endif

#ifdef PINZ

# define PINZ_BIT SET_BIT8_FORMAT(PINZ)

#endif

#ifdef PORTH

# define _PH0    PORTH_BIT.BIT0

# define _PH1    PORTH_BIT.BIT1

# define _PH2    PORTH_BIT.BIT2

# define _PH3    PORTH_BIT.BIT3

# define _PH4    PORTH_BIT.BIT4

# define _PH5    PORTH_BIT.BIT5

# define _PH6    PORTH_BIT.BIT6

# define _PH7    PORTH_BIT.BIT7

#endif

#ifdef PORTI

# define _PI0    PORTI_BIT.BIT0

# define _PI1    PORTI_BIT.BIT1

# define _PI2    PORTI_BIT.BIT2

# define _PI3    PORTI_BIT.BIT3

# define _PI4    PORTI_BIT.BIT4

# define _PI5    PORTI_BIT.BIT5

# define _PI6    PORTI_BIT.BIT6

# define _PI7    PORTI_BIT.BIT7

#endif

#ifdef PORTJ

# define _PJ0    PORTJ_BIT.BIT0

# define _PJ1    PORTJ_BIT.BIT1

# define _PJ2    PORTJ_BIT.BIT2

# define _PJ3    PORTJ_BIT.BIT3

# define _PJ4    PORTJ_BIT.BIT4

# define _PJ5    PORTJ_BIT.BIT5

# define _PJ6    PORTJ_BIT.BIT6

# define _PJ7    PORTJ_BIT.BIT7

#endif

#ifdef PORTK

# define _PK0    PORTK_BIT.BIT0

# define _PK1    PORTK_BIT.BIT1

# define _PK2    PORTK_BIT.BIT2

# define _PK3    PORTK_BIT.BIT3

# define _PK4    PORTK_BIT.BIT4

# define _PK5    PORTK_BIT.BIT5

# define _PK6    PORTK_BIT.BIT6

# define _PK7    PORTK_BIT.BIT7

#endif

#ifdef PORTL

# define _PL0    PORTL_BIT.BIT0

# define _PL1    PORTL_BIT.BIT1

# define _PL2    PORTL_BIT.BIT2

# define _PL3    PORTL_BIT.BIT3

# define _PL4    PORTL_BIT.BIT4

# define _PL5    PORTL_BIT.BIT5

# define _PL6    PORTL_BIT.BIT6

# define _PL7    PORTL_BIT.BIT7

#endif

#ifdef PORTM

# define _PM0    PORTM_BIT.BIT0

# define _PM1    PORTM_BIT.BIT1

# define _PM2    PORTM_BIT.BIT2

# define _PM3    PORTM_BIT.BIT3

# define _PM4    PORTM_BIT.BIT4

# define _PM5    PORTM_BIT.BIT5

# define _PM6    PORTM_BIT.BIT6

# define _PM7    PORTM_BIT.BIT7

#endif

#ifdef PORTN

# define _PN0    PORTN_BIT.BIT0

# define _PN1    PORTN_BIT.BIT1

# define _PN2    PORTN_BIT.BIT2

# define _PN3    PORTN_BIT.BIT3

# define _PN4    PORTN_BIT.BIT4

# define _PN5    PORTN_BIT.BIT5

# define _PN6    PORTN_BIT.BIT6

# define _PN7    PORTN_BIT.BIT7

#endif

#ifdef PORTO

# define _PO0    PORTO_BIT.BIT0

# define _PO1    PORTO_BIT.BIT1

# define _PO2    PORTO_BIT.BIT2

# define _PO3    PORTO_BIT.BIT3

# define _PO4    PORTO_BIT.BIT4

# define _PO5    PORTO_BIT.BIT5

# define _PO6    PORTO_BIT.BIT6

# define _PO7    PORTO_BIT.BIT7

#endif

#ifdef PORTP

# define _PP0    PORTP_BIT.BIT0

# define _PP1    PORTP_BIT.BIT1

# define _PP2    PORTP_BIT.BIT2

# define _PP3    PORTP_BIT.BIT3

# define _PP4    PORTP_BIT.BIT4

# define _PP5    PORTP_BIT.BIT5

# define _PP6    PORTP_BIT.BIT6

# define _PP7    PORTP_BIT.BIT7

#endif

#ifdef PORTQ

# define _PQ0    PORTQ_BIT.BIT0

# define _PQ1    PORTQ_BIT.BIT1

# define _PQ2    PORTQ_BIT.BIT2

# define _PQ3    PORTQ_BIT.BIT3

# define _PQ4    PORTQ_BIT.BIT4

# define _PQ5    PORTQ_BIT.BIT5

# define _PQ6    PORTQ_BIT.BIT6

# define _PQ7    PORTQ_BIT.BIT7

#endif

#ifdef PORTR

# define _PR0    PORTR_BIT.BIT0

# define _PR1    PORTR_BIT.BIT1

# define _PR2    PORTR_BIT.BIT2

# define _PR3    PORTR_BIT.BIT3

# define _PR4    PORTR_BIT.BIT4

# define _PR5    PORTR_BIT.BIT5

# define _PR6    PORTR_BIT.BIT6

# define _PR7    PORTR_BIT.BIT7

#endif

#ifdef PORTS

# define _PS0    PORTS_BIT.BIT0

# define _PS1    PORTS_BIT.BIT1

# define _PS2    PORTS_BIT.BIT2

# define _PS3    PORTS_BIT.BIT3

# define _PS4    PORTS_BIT.BIT4

# define _PS5    PORTS_BIT.BIT5

# define _PS6    PORTS_BIT.BIT6

# define _PS7    PORTS_BIT.BIT7

#endif

#ifdef PORTT

# define _PT0    PORTT_BIT.BIT0

# define _PT1    PORTT_BIT.BIT1

# define _PT2    PORTT_BIT.BIT2

# define _PT3    PORTT_BIT.BIT3

# define _PT4    PORTT_BIT.BIT4

# define _PT5    PORTT_BIT.BIT5

# define _PT6    PORTT_BIT.BIT6

# define _PT7    PORTT_BIT.BIT7

#endif

#ifdef PORTU

# define _PU0    PORTU_BIT.BIT0

# define _PU1    PORTU_BIT.BIT1

# define _PU2    PORTU_BIT.BIT2

# define _PU3    PORTU_BIT.BIT3

# define _PU4    PORTU_BIT.BIT4

# define _PU5    PORTU_BIT.BIT5

# define _PU6    PORTU_BIT.BIT6

# define _PU7    PORTU_BIT.BIT7

#endif

#ifdef PORTV

# define _PV0    PORTV_BIT.BIT0

# define _PV1    PORTV_BIT.BIT1

# define _PV2    PORTV_BIT.BIT2

# define _PV3    PORTV_BIT.BIT3

# define _PV4    PORTV_BIT.BIT4

# define _PV5    PORTV_BIT.BIT5

# define _PV6    PORTV_BIT.BIT6

# define _PV7    PORTV_BIT.BIT7

#endif

#ifdef PORTW

# define _PW0    PORTW_BIT.BIT0

# define _PW1    PORTW_BIT.BIT1

# define _PW2    PORTW_BIT.BIT2

# define _PW3    PORTW_BIT.BIT3

# define _PW4    PORTW_BIT.BIT4

# define _PW5    PORTW_BIT.BIT5

# define _PW6    PORTW_BIT.BIT6

# define _PW7    PORTW_BIT.BIT7

#endif

#ifdef PORTX

# define _PX0    PORTX_BIT.BIT0

# define _PX1    PORTX_BIT.BIT1

# define _PX2    PORTX_BIT.BIT2

# define _PX3    PORTX_BIT.BIT3

# define _PX4    PORTX_BIT.BIT4

# define _PX5    PORTX_BIT.BIT5

# define _PX6    PORTX_BIT.BIT6

# define _PX7    PORTX_BIT.BIT7

#endif

#ifdef PORTY

# define _PY0    PORTY_BIT.BIT0

# define _PY1    PORTY_BIT.BIT1

# define _PY2    PORTY_BIT.BIT2

# define _PY3    PORTY_BIT.BIT3

# define _PY4    PORTY_BIT.BIT4

# define _PY5    PORTY_BIT.BIT5

# define _PY6    PORTY_BIT.BIT6

# define _PY7    PORTY_BIT.BIT7

#endif

#ifdef PORTZ

# define _PZ0    PORTZ_BIT.BIT0

# define _PZ1    PORTZ_BIT.BIT1

# define _PZ2    PORTZ_BIT.BIT2

# define _PZ3    PORTZ_BIT.BIT3

# define _PZ4    PORTZ_BIT.BIT4

# define _PZ5    PORTZ_BIT.BIT5

# define _PZ6    PORTZ_BIT.BIT6

# define _PZ7    PORTZ_BIT.BIT7

#endif

#ifdef PINH

# define Read_PH0    PINH_BIT.BIT0

# define Read_PH1    PINH_BIT.BIT1

# define Read_PH2    PINH_BIT.BIT2

# define Read_PH3    PINH_BIT.BIT3

# define Read_PH4    PINH_BIT.BIT4

# define Read_PH5    PINH_BIT.BIT5

# define Read_PH6    PINH_BIT.BIT6

# define Read_PH7    PINH_BIT.BIT7

#endif

#ifdef PINI

# define Read_PI0    PINI_BIT.BIT0

# define Read_PI1    PINI_BIT.BIT1

# define Read_PI2    PINI_BIT.BIT2

# define Read_PI3    PINI_BIT.BIT3

# define Read_PI4    PINI_BIT.BIT4

# define Read_PI5    PINI_BIT.BIT5

# define Read_PI6    PINI_BIT.BIT6

# define Read_PI7    PINI_BIT.BIT7

#endif

#ifdef PINJ

# define Read_PJ0    PINJ_BIT.BIT0

# define Read_PJ1    PINJ_BIT.BIT1

# define Read_PJ2    PINJ_BIT.BIT2

# define Read_PJ3    PINJ_BIT.BIT3

# define Read_PJ4    PINJ_BIT.BIT4

# define Read_PJ5    PINJ_BIT.BIT5

# define Read_PJ6    PINJ_BIT.BIT6

# define Read_PJ7    PINJ_BIT.BIT7

#endif

#ifdef PINK

# define Read_PK0    PINK_BIT.BIT0

# define Read_PK1    PINK_BIT.BIT1

# define Read_PK2    PINK_BIT.BIT2

# define Read_PK3    PINK_BIT.BIT3

# define Read_PK4    PINK_BIT.BIT4

# define Read_PK5    PINK_BIT.BIT5

# define Read_PK6    PINK_BIT.BIT6

# define Read_PK7    PINK_BIT.BIT7

#endif

#ifdef PINL

# define Read_PL0    PINL_BIT.BIT0

# define Read_PL1    PINL_BIT.BIT1

# define Read_PL2    PINL_BIT.BIT2

# define Read_PL3    PINL_BIT.BIT3

# define Read_PL4    PINL_BIT.BIT4

# define Read_PL5    PINL_BIT.BIT5

# define Read_PL6    PINL_BIT.BIT6

# define Read_PL7    PINL_BIT.BIT7

#endif

#ifdef PINM

# define Read_PM0    PINM_BIT.BIT0

# define Read_PM1    PINM_BIT.BIT1

# define Read_PM2    PINM_BIT.BIT2

# define Read_PM3    PINM_BIT.BIT3

# define Read_PM4    PINM_BIT.BIT4

# define Read_PM5    PINM_BIT.BIT5

# define Read_PM6    PINM_BIT.BIT6

# define Read_PM7    PINM_BIT.BIT7

#endif

#ifdef PINN

# define Read_PN0    PINN_BIT.BIT0

# define Read_PN1    PINN_BIT.BIT1

# define Read_PN2    PINN_BIT.BIT2

# define Read_PN3    PINN_BIT.BIT3

# define Read_PN4    PINN_BIT.BIT4

# define Read_PN5    PINN_BIT.BIT5

# define Read_PN6    PINN_BIT.BIT6

# define Read_PN7    PINN_BIT.BIT7

#endif

#ifdef PINO

# define Read_PO0    PINO_BIT.BIT0

# define Read_PO1    PINO_BIT.BIT1

# define Read_PO2    PINO_BIT.BIT2

# define Read_PO3    PINO_BIT.BIT3

# define Read_PO4    PINO_BIT.BIT4

# define Read_PO5    PINO_BIT.BIT5

# define Read_PO6    PINO_BIT.BIT6

# define Read_PO7    PINO_BIT.BIT7

#endif

#ifdef PINP

# define Read_PP0    PINP_BIT.BIT0

# define Read_PP1    PINP_BIT.BIT1

# define Read_PP2    PINP_BIT.BIT2

# define Read_PP3    PINP_BIT.BIT3

# define Read_PP4    PINP_BIT.BIT4

# define Read_PP5    PINP_BIT.BIT5

# define Read_PP6    PINP_BIT.BIT6

# define Read_PP7    PINP_BIT.BIT7

#endif

#ifdef PINQ

# define Read_PQ0    PINQ_BIT.BIT0

# define Read_PQ1    PINQ_BIT.BIT1

# define Read_PQ2    PINQ_BIT.BIT2

# define Read_PQ3    PINQ_BIT.BIT3

# define Read_PQ4    PINQ_BIT.BIT4

# define Read_PQ5    PINQ_BIT.BIT5

# define Read_PQ6    PINQ_BIT.BIT6

# define Read_PQ7    PINQ_BIT.BIT7

#endif

#ifdef PINR

# define Read_PR0    PINR_BIT.BIT0

# define Read_PR1    PINR_BIT.BIT1

# define Read_PR2    PINR_BIT.BIT2

# define Read_PR3    PINR_BIT.BIT3

# define Read_PR4    PINR_BIT.BIT4

# define Read_PR5    PINR_BIT.BIT5

# define Read_PR6    PINR_BIT.BIT6

# define Read_PR7    PINR_BIT.BIT7

#endif

#ifdef PINS

# define Read_PS0    PINS_BIT.BIT0

# define Read_PS1    PINS_BIT.BIT1

# define Read_PS2    PINS_BIT.BIT2

# define Read_PS3    PINS_BIT.BIT3

# define Read_PS4    PINS_BIT.BIT4

# define Read_PS5    PINS_BIT.BIT5

# define Read_PS6    PINS_BIT.BIT6

# define Read_PS7    PINS_BIT.BIT7

#endif

#ifdef PINT

# define Read_PT0    PINT_BIT.BIT0

# define Read_PT1    PINT_BIT.BIT1

# define Read_PT2    PINT_BIT.BIT2

# define Read_PT3    PINT_BIT.BIT3

# define Read_PT4    PINT_BIT.BIT4

# define Read_PT5    PINT_BIT.BIT5

# define Read_PT6    PINT_BIT.BIT6

# define Read_PT7    PINT_BIT.BIT7

#endif

#ifdef PINU

# define Read_PU0    PINU_BIT.BIT0

# define Read_PU1    PINU_BIT.BIT1

# define Read_PU2    PINU_BIT.BIT2

# define Read_PU3    PINU_BIT.BIT3

# define Read_PU4    PINU_BIT.BIT4

# define Read_PU5    PINU_BIT.BIT5

# define Read_PU6    PINU_BIT.BIT6

# define Read_PU7    PINU_BIT.BIT7

#endif

#ifdef PINV

# define Read_PV0    PINV_BIT.BIT0

# define Read_PV1    PINV_BIT.BIT1

# define Read_PV2    PINV_BIT.BIT2

# define Read_PV3    PINV_BIT.BIT3

# define Read_PV4    PINV_BIT.BIT4

# define Read_PV5    PINV_BIT.BIT5

# define Read_PV6    PINV_BIT.BIT6

# define Read_PV7    PINV_BIT.BIT7

#endif

#ifdef PINW

# define Read_PW0    PINW_BIT.BIT0

# define Read_PW1    PINW_BIT.BIT1

# define Read_PW2    PINW_BIT.BIT2

# define Read_PW3    PINW_BIT.BIT3

# define Read_PW4    PINW_BIT.BIT4

# define Read_PW5    PINW_BIT.BIT5

# define Read_PW6    PINW_BIT.BIT6

# define Read_PW7    PINW_BIT.BIT7

#endif

#ifdef PINX

# define Read_PX0    PINX_BIT.BIT0

# define Read_PX1    PINX_BIT.BIT1

# define Read_PX2    PINX_BIT.BIT2

# define Read_PX3    PINX_BIT.BIT3

# define Read_PX4    PINX_BIT.BIT4

# define Read_PX5    PINX_BIT.BIT5

# define Read_PX6    PINX_BIT.BIT6

# define Read_PX7    PINX_BIT.BIT7

#endif

#ifdef PINY

# define Read_PY0    PINY_BIT.BIT0

# define Read_PY1    PINY_BIT.BIT1

# define Read_PY2    PINY_BIT.BIT2

# define Read_PY3    PINY_BIT.BIT3

# define Read_PY4    PINY_BIT.BIT4

# define Read_PY5    PINY_BIT.BIT5

# define Read_PY6    PINY_BIT.BIT6

# define Read_PY7    PINY_BIT.BIT7

#endif

#ifdef PINZ

# define Read_PZ0    PINZ_BIT.BIT0

# define Read_PZ1    PINZ_BIT.BIT1

# define Read_PZ2    PINZ_BIT.BIT2

# define Read_PZ3    PINZ_BIT.BIT3

# define Read_PZ4    PINZ_BIT.BIT4

# define Read_PZ5    PINZ_BIT.BIT5

# define Read_PZ6    PINZ_BIT.BIT6

# define Read_PZ7    PINZ_BIT.BIT7

#endif

/*------------------*

* 动作宏定义*

*------------------*/

# define VIRTUALPORT_INSERT_SPI_STC_ISR_CODEVP_PINx = SPDR; VP_IfStartRefresh = True;

# define REFRESH_VIRTUAL_PORT refreshVirtualPort();

/********************

* 结构体宏定义 *

********************/

/********************

* 函数声明区*

********************/

BOOL refreshVirtualPort(void);

/********************

* 全局变量声明区*

********************/

volatile unsigned char VP_PORTx;

volatile unsigned char VP_PINx;

BOOL VP_IfStartRefresh = False;                         //虚拟端口刷新标志

unsigned char VP_PortCounter = 0;                         //虚拟端口计数器

/***********************************************************

*函数说明：虚拟端口刷新函数                            *

***********************************************************/

BOOL refreshVirtualPort(void)

{

static BOOL IfStartRefresh = False;                   //刷新忙信号

if (IfStartRefresh)

{

   return False;

}

IfStartRefresh = True;

VP_SS = Low;

VP_SS = High;                                        //锁存并行数据

for (VP_PortCounter = VP_PORT_COUNT;VP_PortCounter>0;VP_PortCounter--)

{

   VP_IfStartRefresh = False;                      //设置等待完成信号

   SPDR = VP_PORTx;

   while(VP_IfStartRefresh == False);

}

VP_SS = Low;

VP_SS = High;                                        //锁存串行数据

IfStartRefresh = False;

return True;

}

#endif

Gorgon_Meducer 发表于 2006-8-21 21:42:43

应用实例

比方说，我要扩展2个端口

使用M8

……

/*--------------虚拟端口模块---------------*/

# define VP_PORT_COUNT2

# define VP_SS       _PB0

# include <RD_UseVirtualPort.h>

/***********************************************************

*函数说明：硬件SPI初始化函数                         *

***********************************************************/

void SPIInit(void)

{

SPCR = 0xDC;

SPSR = 0x01;

}

/***********************************************************

*函数说明：硬件SPI中断处理程序                         *

***********************************************************/

void SPIStcIsr(void)

{

VIRTUALPORT_INSERT_SPI_STC_ISR_CODE

}

/***********************************************************

*函数说明：定时器0初始化函数                         *

***********************************************************/

void Timer0Init(void)

{

TCCR0 = 0x00;

ASSR= 0x00;

TCNT0 = 0x06;

OCR0= 0xFA;

TCCR0 = 0x04;

}

/***********************************************************

*函数说明：定时器0中断处理程序                         *

***********************************************************/

void Timer0OvfIsr(void)

{

TCNT0 = 0x06;

REFRESH_VIRTUAL_PORT    //一毫秒刷新一次

}

因为我们只扩展两个端口

所以，这两个端口分别是

PORTH PORTIPINH PINI

当然，也支持位操作哦^_^

pcl001 发表于 2006-8-22 09:16:33

不错 ,595及165以前用过 ,感觉还可以

yulutong 发表于 2007-12-20 13:24:51

傻孩子要出书了。现在要用到165,这么好的范例帖子帮顶。

Feeling_MCU 发表于 2007-12-21 09:34:10

顶，好东西，可以用得上

admvip 发表于 2008-1-16 11:30:40

这两个端口分别是
PORTH PORTIPINH PINI

是不是也要用DDR控制方向呢？
另外1楼给出的电路图是扩展4组IO端口吧,可是为什么要用2片165，2片595呢！
新手的问题比较菜，见笑了！

Gorgon_Meducer 发表于 2008-1-16 19:14:39

不需要DDR控制方向哈，因为虚拟出来的PORTx和PINx在物理上是分开的，分别对应595和165。
另外，该贴子介绍的方法已经有了改进版本，不需要额外编写时序来驱动了。只需要在165的S/P信号上加一个非门，就可以直接用硬件SPI直接驱动——其时钟极性与595兼容。在我的书中，我从万用板开始，由硬到软一步一步（多图）介绍了这种端口扩展方式。

admvip 发表于 2008-1-18 14:36:35

都明白了，谢谢楼主。

zhzj2007 发表于 2008-1-30 18:11:31

楼主：下面这头文件在哪里呢。
RD_MacroAndConst.h

zhzj2007 发表于 2008-1-30 18:25:18

楼主在吗，或者知道的朋友帮忙贴下上来吧

Gorgon_Meducer 发表于 2008-1-30 21:04:15

这个头文件在专栏楼顶的贴子里面

gxluozhi 发表于 2008-2-1 14:55:52

真的不错，哪天我才有这样的境界啊。看来是我没有用心读书~~~595很多人都用过啊

apcfy 发表于 2008-2-17 08:55:52

楼主牛人,不知道你的书里面有没有将很多个165和595联级混合使用的范例.我以前见过这样的电路,但自己没写过!
我是菜鸟,望指教!

spy2008 发表于 2008-4-2 14:36:10

mark

qxs5264 发表于 2008-4-9 09:11:32

顶一下！

onebobo126com 发表于 2009-6-18 15:54:21

楼主厉害，长见识了

sunmy 发表于 2010-6-21 10:39:08

dingyiging!

busybox 发表于 2012-1-4 19:18:43

非常不错的资料，正在用到了，谢谢楼主~

lhuan 发表于 2012-3-30 22:08:18

实践证明一切。

edwardguo1112 发表于 2013-11-24 10:17:19

牛人！！！！！！！！！！！！！！！！！！！！！！！

农夫山泉 发表于 2014-1-2 10:52:29

MARK........

山在桥那边 发表于 2014-6-7 18:51:36

mark mark mark

BrightWang 发表于 2014-6-7 19:34:14

标记，[古董贴][范例]使用595配合165级联模块扩展端口（硬件SPI）

click_lijie 发表于 2014-7-4 15:24:49

本帖最后由 click_lijie 于 2014-7-4 15:26 编辑

顶。提醒一下，165和595 都是高位在前的，设计程序注意一下。还有165的锁存是低电平有效，595的锁存是上升沿有效。若想利用SPI的片选信号对它们同时有效（要不然165可能会有一位不正确----最高位），最好在165的锁存加一个非门（我用三极管反向），在SPI的自动片选下降沿就完成锁存.

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[古董贴][范例]使用595配合165级联模块扩展端口（硬件SPI）