QMK Spam Macro

/*  https://www.reddit.com/r/olkb/comments/pkdv7t/repeat_macro_on_loop/
    Code to spam Mouse1 and Enter every so often, with a macro to toggle it.

    Make sure you have 'MOUSEKEY_ENABLE = yes' in your rules.mk file.
 */

enum custom_keycodes {
    M1_ENTR = SAFE_RANGE,  //name your macro. always start the list at SAFE_RANGE
    //other macros,
};

#define M1_ENTR_DELAY 200     //configure time to wait between macro executions, in milliseconds
bool M1_ENTR_active = false;  //boolean to track if macro is active
uint16_t M1_ENTR_timer = 0;   //timer to track the last time macro was executed

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case M1_ENTR:
            if (record->event.pressed) {            //if M1_ENTR is pressed
                M1_ENTR_active = !M1_ENTR_active;   //  flip the boolean to turn macro on or off
            }
            break;
        //case other_macros:
            //...
    }
    return true;
}


void matrix_scan_user(void) {  //runs after every matrix scan
    if (M1_ENTR_active) {                                    //if macro is active
        if (timer_elapsed(M1_ENTR_timer) > M1_ENTR_DELAY) {  //and it has been longer than M1_ENTR_DELAY
            M1_ENTR_timer = timer_read();                    //  reset timer to the current time
            tap_code16(KC_MS_BTN1);                          //  tap mouse button 1
            tap_code16(KC_ENTER);                            //  tap enter
        }
    }
}