#define ad1 0x50; //AD一通道 0-10V 输入
#define ad_addr XBYTE[0x8000]
sbit HBEN = P1^0; //0 读高四位 1读低8位
sbit CS = P1^1;
sbit INTF1 = P3^3;
uint ad_vale;
uint ad_command;
uint read_ad197(uchar ad_command)
{
uint ad_vale;
CS = 0;
EA = 1;
EX1 = 1;
ad_addr = ad_command;
while(INTF1 != 0)
// while(IE1 == 0)
{
HBEN=0;
}
IE1 = 0;
ad_vale = ad_addr;
ad_vale = ad_vale << 8;
HBEN = 1;
ad_vale = ad_addr;
return ad_vale;
}![]() |
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