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unsigned char read_port4_7(char port)
{
unsigned char sfrpage_save = SFRPAGE;
unsigned char value_port = 0;
switch (port)
{
case 4:
SFRPAGE = CONFIG_PAGE; // SFRPAGE = 0x0F;
P4MDOUT = 0;
P4 = 0xFF;
value_port = P4;
break;
case 5:
SFRPAGE = CONFIG_PAGE;
P5MDOUT = 0;
P5 = 0xFF;
value_port = P5;
break;
case 6:
SFRPAGE = CONFIG_PAGE;
P6MDOUT = 0;
P6 = 0xFF;
value_port = P6;
break;
case 7:
SFRPAGE = CONFIG_PAGE;
P7MDOUT = 0;
P7 = 0xFF;
value_port = P7;
break;
}
SFRPAGE = sfrpage_save;
return (value_port);
}
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