Question

PCON is not a bit addressable register. Write a C code segment that makes sure that...

PCON is not a bit addressable register. Write a C code segment that makes sure that SMOD0 (bit 6) is cleared to ‘0’ and SMOD1 (bit 7) is set or cleared based on a defined value (i.e #define SMOD1 (1) would cause bit 7 to be set.). Hint: This can be done with as few as two instructions (one to clear and one to set).

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Answer #1

C code to make 6th bit of SMODO clear
if(SMODO & (1<<6))SMODO ^= (1<<6);


C code to make 7th bit of SMOD1 set
SMOD1 &= (1<<7);

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