in this code for at91sam9

AT91C_BASE_PIOA->PIO_SODR = led_mask ;

i'm beginner in c language AND what is purpose from ->

  AT91C_BASE_SYS->PITC_PIMR |= AT91C_PITC_PITEN;

in this code

what is purpose from
|=

thank's

 

-> means the member of a structure named on the RHS "pointed at" by the pointer on the LHS.

|= menas "or equal" the left hand operand is or'ed with the right hand operand and assigned to the left hand operand.

 

-> means the member of a structure named on the RHS "pointed at" by the pointer on the LHS.

|= menas "or equal" the left hand operand is or'ed with the right hand operand and assigned to the left hand operand.

thank you

but i'm not good in english

-and what rhs and lhs mean ?

thank you

 

RHS = Right Hand Side
LHS = Left Hand Side

 

thank you for help me