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Inerfacing RF 433 module with UART transmission in PIC

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Code: 
me >>=2;
this is the same as
Code: 
me = me>>2;
which means shift right two positions the value of me and then assign the new value back to me

Code: 
me |= 0b01000000;

| is the OR operator , any value ORed with one becomes 1 and any value ORed by 0 keeps the old value.
The above code is the same as

Code: 
me =  me | 0b01000000;
it essentially sets bit6 of me to a value of 1 while preserving the values of all the other bits.

Code: 
bit_set(dec,3);
bit_clear(dec,3);
The two parameters are the variable and the bit to manipulate, (dec,3) means bit 3 of variable dec.
The bit_set function sets the bit to a value of 1 and the bit_clear sets the bit to a value of 0.

Alex
 
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