sel_float.comp

/********************************************************************************
sel_float.comp

*********************************************************************************/

component sel_float                 "This component services the float selector";

pin in bit sel_up_in              "bump selection up";
pin in bit sel_dn_in             "bump selection down";
pin in float sel_in.# [10]     "values to select from";
pin in unsigned number_sels           "number of selections to cycle, total";
pin out float sel_out                "output to sel";

function _;
author "Travis Farmer";
license "GPL";
;;

bool last_up = false;
bool last_dn = false;
int curr_sel = 0;
int lastCntr = 0;

void bump_up(unsigned int sels) {
    curr_sel++;
    if (curr_sel > sels) {
        curr_sel = sels;
    }
}

void bump_dn(unsigned int sels) {
    curr_sel--;
    if (curr_sel < 0) {
        curr_sel = 0;
    }
}

FUNCTION(_) {
    unsigned int num_sels = (number_sels-1);
    if (sel_up_in == 1 && last_up == false) {
        last_up = true;
    } else if (sel_up_in == 0 && last_up == true) {
        last_up = false;
        curr_sel++;
        if (curr_sel > num_sels) {
            curr_sel = 0;
            bump_up(num_sels);
        }
    } else if (sel_dn_in == 1 && last_dn == false) {
        last_dn = true;
    } else if (sel_dn_in == 0 && last_dn == true) {
        last_dn = false;
        bump_dn(num_sels);
    }
    sel_out = sel_in(curr_sel);
}