microcontrollers

[imant]

Hello! have a function :
void send_addr(unsigned long addr)
{
DDRC = 0xFF;
DDRD = 0x10;
for(int i = 0; i < 16; ++i) {
if ((addr&1)) {
DATA_ADDR1
}
else {
DATA_ADDR0
}
addr >>= 1;
SRAM_CLK0
SRAM_CLK1
}
}
how to check, if the 16 bit of addr is set?

[weaknessforcats]

Create a mask with bit 16 set and the others reset:

1000000000000000

Usually that is done by:

1 << 15

Then AND your data with the mask:

1101001010001011
1000000000000000
-------------------------
1000000000000000

If the result is the same as the mask, then bit 16 is set:

if ((1 << 15) == data & (1 << 15))
{
    //it's set
}
else
{
    //no it's not
}