📄 microwire.c
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/********************** Micro_wire基本操作函数******************************
[文件名] microwire.c+microwire.H+ASMselect.h
[版本] TV.1
[创建] 阿春x
[修正] 阿春x
[最后修改时间] 2006.04.20 20:30
[验 正 时 间] 2006.04.24 15:30
[功能说明]指定地址数据块读写，需指定数据格式（16位或8位）和数据输入输出线是否共用，
参数:片选io口，地址，地址位数，数据个数，数据缓冲区地址。
***************************************************************************/
#include "ASMselect.h"
#if ASMmicrowire
#include "reg51x.h"
#include "tab.h"
#include <stdio.h>
#include <intrins.h>
//#include "ioprot.h"
//---------------------
sbit DO= P1^1;//if DO,DI short,DO=P1^1;
sbit DI=P1^1;
sbit SK=P1^2;
sbit CS_93C46=P1^3;
/* TSSOP PDIP SOIC
PIN 1- CS HIGH active
PIN 2- SK Clock
PIN 3- DI Data Input DI and DO can short
PIN 4- DO Data Output
PIN 5- GND
PIN 6- VCC 1.8/2.5/2.7~5.5V
PIN 7- ORG '1' or open data is 16 bit, '0' data 8 bit
PIN 8- NC
93c46 1K: 128 x 8 or 64 x 16(addr 7 bit or 6 bit)
93c56 2K: 256 x 8 or 128 x 16(addr 8 bit or 7 bit)
93c66 4K: 512 x 8 or 256 x 16(addr 9 bit or 8 bit) */
sbit CS_lcd=P1^3;
sbit CS_timer=P1^3;
//---------------------
extern void DELAY_Xms(unsigned int count);
uchar Micro_read_8bit();
Micro_write_nbit(uint txdata,uchar txcount);
cs_process(uchar cs_pin,bit hilow);
//Micro_write_8bit(uchar idata txdata);
//void DELAY_X20us( int xus);
#if store_data_8bit
Micro_write_block_data8(uchar cs_pin,uint addr ,uchar ucaddr_count,uchar ucdata_count,uchar *ucdata_buf){
uchar i;
SK=0;
for(i=0;i<ucdata_count;i++){
cs_process(cs_pin,0);
cs_process(cs_pin,1);
DI=1;SK=1;SK=0;//Start bit //cs _/------------------------\_
Micro_write_nbit(0x060,9);//write en //di ---\ _ _ / - -\ _ _ _ _ =1 0011xxxxx write enable
cs_process(cs_pin,0); //sk -\_ -\_-\_-\_-\_-\_-\_-\_-\_
//---------
cs_process(cs_pin,1);
DI=1;SK=1;SK=0;//Start bit //cs _/---------
DI=0;SK=1;SK=0;//command:01 write//di ---\ _ / - =1 01 write command
DI=1;SK=1;SK=0;//command //sk -\_ -\_-\_-
Micro_write_nbit(addr,ucaddr_count); //wirte addr
Micro_write_nbit(*ucdata_buf,8); //wirte tx 8 data
// Micro_write_8bit(*ucdata_buf); //wirte tx 8 data
cs_process(cs_pin,0);
DELAY_Xms(11);
//----------
cs_process(cs_pin,1);
DI=1;SK=1;SK=0;//Start bit //cs _/------------------------\_
Micro_write_nbit(0x000,9);//write ds //di ---\ _ _ _ _ _ _ _ _ _ =1 0000xxxxx write disable
cs_process(cs_pin,0); //sk -\_ -\_-\_-\_-\_-\_-\_-\_-\_
addr++;
ucdata_buf++;
}
}
Micro_read_block_data8(uchar cs_pin,uint addr ,uchar ucaddr_count,uchar ucdata_count,uchar *ucdata_buf){
uchar i;
cs_process(cs_pin,0);
for(i=0;i<ucdata_count;i++){
SK=0;
cs_process(cs_pin,1);
DI=1;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///Start bit //cs _/---------
DI=1;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///command:01 write//di ----- \ _ __ =1 10 read command
DI=0;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///command //sk -\_ -\_-\_-
Micro_write_nbit(addr,ucaddr_count);//rx 8 bit data
DI=1;
*ucdata_buf=Micro_read_8bit();
#if debug
printf("rx%bx=%bx",i,*ucdata_buf);
#endif
addr++;
ucdata_buf++;
cs_process(cs_pin,0);
DELAY_Xms(1);
}
}
#endif
#if store_data_16bit
Micro_write_block_data16(uchar cs_pin,uint addr ,uchar ucaddr_count,uchar ucdata_count,uint *uidata_buf){
uchar i;
SK=0;
for(i=0;i<ucdata_count;i++){
cs_process(cs_pin,0);
cs_process(cs_pin,1);
DI=1;SK=1;/*DELAY_X20us(1);*/
SK=0;/*DELAY_X20us(1);*///Start bit //cs _/------------------------\_
Micro_write_nbit(0x30,8);//write en //di ---\ _ _ / - -\ _ _ _ _ =1 0011xxxx write enable
cs_process(cs_pin,0); //sk -\_ -\_-\_-\_-\_-\_-\_-\_-\_
//---------
cs_process(cs_pin,1);
DI=1;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///Start bit //cs _/---------
DI=0;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///command:01 write//di ---\ _ / - =1 01 write command
DI=1;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///command //sk -\_ -\_-\_-
Micro_write_nbit(addr,ucaddr_count); //wirte addr
Micro_write_nbit(*uidata_buf,16); //wirte rx 16 bit data
cs_process(cs_pin,0);
DELAY_Xms(11);
//----------
cs_process(cs_pin,1);
DI=1;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///Start bit //cs _/------------------------\_
Micro_write_nbit(0x00,8);//write ds //di ---\ _ _ _ _ _ _ _ _ _ =1 0000xxxx write disable
cs_process(cs_pin,0); //sk -\_ -\_-\_-\_-\_-\_-\_-\_-\_
addr++;
uidata_buf++;
}
}
Micro_read_block_data16(uchar cs_pin,uint addr,uchar ucaddr_count,uchar ucdata_count,uint *uidata_buf){
uchar i;
union {
uint uidata;
uchar ucdata[2];
}datax;
cs_process(cs_pin,0);
for(i=0;i<ucdata_count;i++){
SK=0;
cs_process(cs_pin,1);
datax.uidata=0;
DI=1;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///Start bit //cs _/---------
DI=1;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///command:01 write//di ----- \ _ __ =1 10 read command
DI=0;SK=1;/*DELAY_X20us(1);*/SK=0;/*DELAY_X20us(1);*///command //sk -\_ -\_-\_- Micro_write_nbit(addr,ucaddr_count);
Micro_write_nbit(addr,ucaddr_count);//tx addr
DI=1;
datax.ucdata[0]=Micro_read_8bit();//rx 16 bit data
datax.ucdata[1]=Micro_read_8bit();
*uidata_buf=datax.uidata;
addr++;
uidata_buf++;
cs_process(cs_pin,0);
DELAY_Xms(1);
}
}
#endif
/*
Micro_write_8bit(uchar txdata){
char i;
for(i=0;i<8;i++){
if((txdata & 0x80 )==0){
DI=0;
}
else {
DI=1;
}
SK=1;
txdata<<=1;
SK=0;
}
}*/
Micro_write_nbit(uint txdata,uchar txcount){
uchar i;
for(i=16;i>0;i--){
if(i<=txcount){
if((txdata&0X8000)!=0){
DI=1;
SK=1;/*DELAY_X20us(1);*/
}
else {
DI=0;
SK=1;/*DELAY_X20us(1);*/
}
SK=0;/*DELAY_X20us(1);*/
}
txdata<<=1;
}
}
uchar Micro_read_8bit(){
uchar rxdata=0;
uchar i;
for(i=0;i<8;i++){
SK=0;/*DELAY_X20us(1);*/
SK=1;/*DELAY_X20us(1);*/
rxdata<<=1;
if(DO)rxdata++;
}
return(rxdata);
}
cs_process(uchar cs_pin,bit hilow){
switch(cs_pin){
case 1:
CS_93C46=hilow;
break;
case 2:
CS_lcd=hilow;
break;
case 3:
CS_timer=hilow;
break;
default:
break;
}
}
//if define delay_xms not define//=================================
void DELAY_Xms(unsigned int count)// DELAY X ms time f=12M
{
unsigned char data i,j;
for (i = 0;i < count;i++)
{
for (j = 0;j <249;j++)
{
_nop_();
}
}
} //*/
/*/======================DELAY_X20us(delay=20*xs+10us(f=12M)D 30us~655ms==================
void DELAY_X20us( int xus){
int s1;
for (s1=1;s1<xus;s1++){
_nop_();_nop_();_nop_();_nop_();
}
}//*/
#endif
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