Thread: map bits and pins

  1. #1
    Registered User
    Join Date
    Aug 2022
    Posts
    3

    map bits and pins

    Hi,
    I have unsigned char myvar, i got 5 bits and 5 pins 30, 40, 50, 60 and 70. need to map the bits to pins so that I loop though each bit in myvar and sets its pin High or low. I am using array but like to learn a clever way like using structs, unions, etc.

  2. #2
    Registered User
    Join Date
    Apr 2021
    Posts
    139
    Don't. You want the exact opposite of a "clever way."

    Try using a struct, instead:

    Code:
    struct {
        int8_t bp_pin_id;
        uint8_t bp_bit_mask;
        int8_t bp_set_state;
    } Bits_to_pins = {
    { 30, 0x40, PIN_HIGH },
    { 40, 0x01, PIN_LOW },
    { 50, 0x02, PIN_LOW },
    { 60, 0x80, PIN_HIGH },
    { 70, 0x08, PIN_LOW },j
    };

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