;仅供参考 cn_f__12308.c
; 路泽阳
while(1) ////////////////////////////
{
ADDRESS2=0x01;
ADDRESS1=0x00;
for(i=0;i<14;i++)
{
save_char(ADDRESS1,ADDRESS2,SAVE_DATA);
}
_NOP();
ADDRESS2=0x01;
ADDRESS1=0x00;
for(j=0;j<14;j++)
{
DISP_NUM[0][j]=get_char(ADDRESS1,ADDRESS2);
}
_NOP();
}
/////////write byte/////////////////////////////////////////////////////////////
void save_char(char address1,char address2,char wbyte)
{
P_LCM_CONOUT|=FM18L08_CEB; //预充电
P_ADDRESSHIGH_OUT&=~FM1808_WEB; //写操作
P_ADDRESSLOW_OUT=address1; //低8位地址
P_ADDRESSHIGH_OUT=address2; //高7位地址
P_LCM_CONOUT&=~FM18L08_CEB; //地址锁定
P_DATA_DIR=0XFF; //DATA—BUS口线改为输出状态
P_DATA_OUT=wbyte; //给出数据内容
P_LCM_CONOUT|=FM18L08_CEB; //结束写操作
P_ADDRESSHIGH_OUT|=FM1808_WEB; //取消写状态
ADDRESS1++; //地址递增
if(ADDRESS1>0xff)
{
ADDRESS1=0x00;
ADDRESS2++;
if(ADDRESS2>0x7f)
{
ADDRESS2=0x00;
}
}
P_DATA_DIR=0XFF; //BUS口线为输出状态
P_DATA_OUT=0XFF; //释放BUS总线
}
///////read byte///////////////////////////////////////////////////////////////
char get_char(char address1,char address2) 
{
char rbyte;
P_ADDRESSHIGH_OUT|=FM1808_WEB; //取消写状态
P_LCM_CONOUT|=FM18L08_CEB; //预充电
P_ADDRESSLOW_OUT=address1; //低8位地址
P_ADDRESSHIGH_OUT=address2; //高7位地址
P_LCM_CONOUT&=~FM18L08_CEB; //地址锁定
P_LCM_CONOUT&=~FM18L08_OEB; //读状态
P_DATA_DIR=0X00; //DATA—BUS口线改为输入状态
rbyte=P_DATA_IN; //读入数据内容
P_LCM_CONOUT|=FM18L08_CEB; //结束读操作
P_LCM_CONOUT|=FM18L08_OEB; //取消读状态
ADDRESS1++; //地址递增
if(ADDRESS1>0xff)
{
ADDRESS1=0x00;
ADDRESS2++;
if(ADDRESS2>0x7f)
{
ADDRESS2=0x00;
}
}
P_DATA_DIR=0XFF; //BUS口线为输出状态
P_DATA_OUT=0XFF; //释放BUS总线
return rbyte; //返回数据值
}
FM31系列提供最新的参考电路图
