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main.c

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+/*
+ctenna - a multi antenna calulator for console, written in C
+Copyright (C) 2021  Thomas Kummer
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include "hb9cv.h"
+
+//#include <stdlib.h>
+
+void clear_scr(void){
+	printf("\033[H");  //brings cursor home
+	printf("\x1b[2J"); //clears screen
+}
+
+void printunit (int *unit_index){ // prints the selected unit
+    switch(*unit_index){
+    	case 1: printf("mm"); break;
+    	case 2: printf("inch"); break;
+    }
+}
+
+
+
+void set_freq(float *f){ // change the MHz
+    float input;
+    printf("Please input an f in MHz value: e.G. 432.2 \n");
+    scanf("%f", &input);
+    *f = input;
+    printf("\n");
+}
+
+void set_units_system(float *unit_factor ,int *unit_index ){ // change betweenn units
+    int input;
+    printf("Please choose (1)Metric or (2)Imperial units \n");
+    scanf("%i", &input);
+    *unit_index = input;
+    printf("\n");
+    switch(*unit_index){
+    	case 1: *unit_factor = 1; break; // for metric
+    	case 2: *unit_factor = 0.039; break; // for inch
+    	default: *unit_factor = 1; *unit_index = 1;  printf("Invalid input! Guessing! \n"); printf("\n"); break; // a fool, ... we go metric
+    }
+}
+
+void main_menu(float *f, int *unit_index){
+	printf("\n");
+	printf("===========================================================\n");
+	printf("--                       MAIN MENU                       --\n");
+	printf("===========================================================\n");
+	printf("-- (1) Set Frequncy in MHz  %f \n", *f);
+	printf("\n");
+	printf("-- (2) Choose units system  ( set to: "); printunit(&*unit_index); printf(" )\n");
+	printf("\n");
+	printf("--= Omnidirectional Antennas =--\n");
+	printf("\n");
+    printf("-- (3) J-pole antenna\n");
+	printf("\n");
+	printf("-- (4) Groundplane\n");
+	printf("\n");
+	printf("--= Directional Antennas =--\n");
+	printf("\n");
+    printf("-- (5) HB9CV antenna\n");
+   	printf("\n");
+	printf("-----------------------------------------------------------\n");
+    printf("-- (0) Quit                                              --\n");
+	printf("-----------------------------------------------------------\n");
+	}
+
+int menu_select(){
+    int input;
+    printf("Enter your choice: ");
+    scanf("%i",&input);
+    return input;
+}
+
+int main(){
+
+    float f = 435,unit_factor = 1, lambda, l1, l2, l3, l4, l5, bdiam, raddiam; //startup with a 70cm QRG and metric system
+    int main_menu_sel = -1, unit_index = 1;
+
+    while (main_menu_sel != 0){ // main menu loop runs until "0" for quit
+
+        main_menu(&f, &unit_index);
+        main_menu_sel = menu_select();
+
+
+        switch(main_menu_sel){
+
+            case 1: clear_scr();set_freq(&f);
+                    break;
+            case 2: clear_scr();set_units_system(&unit_factor ,&unit_index );
+                    break;
+            //case 3: printf("Not yet"); break;
+            //case 4: printf("Not yet"); break;
+            case 5: hb9cv_calc(&f ,&unit_factor, &lambda, &l1, &l2, &l3, &l4, &l5, &bdiam, &raddiam);
+                    hb9cv_print(&f ,&unit_factor, &lambda, &l1, &l2, &l3, &l4, &l5, &bdiam, &raddiam, &unit_index);
+                    break;
+            // default: maybe easteregg in future
+    	}
+    }
+    clear_scr();
+    printf("\n");
+    printf(" 73! \n");
+    printf("\n");
+    return 0;
+}