add variable spacing and scalable font

main/hello_world_main.c

@@ -165,19 +165,25 @@ uint8_t check_chr_width(uint8_t chr[]){
     return 2; //space character
 }
 
-void put_chr(uint8_t line, uint8_t pos, uint8_t chr[]){
+void put_chr(uint8_t line, uint8_t pos, uint8_t chr[], uint8_t size){
     for(int i=0;i<8;i++)
         for(int j=0;j<7;j++){
-            fb[1+(line*10)+i][(pos)+j][0] = (chr[j]&(1<<i))>>i;
+            uint8_t val = (chr[j]&(1<<i))>>i;
+            for(int x=0;x<size;x++)
+                for(int y=0;y<size;y++)
+                    fb[1+(line*10)+(i*size)+y][(pos)+(j*size)+x][0] = val;
         }
 }
 
-void put_line(uint8_t line, char *str){
+void put_line(uint8_t line, char *str, uint8_t spacing, uint8_t size){
     uint8_t pos = 0;
     uint8_t disp_pos = 0;
     while(str[pos] != 0){
-        put_chr(line, disp_pos, font[str[pos]-0x20]);
-        disp_pos += check_chr_width(font[str[pos]-0x20]) + 3;
+        put_chr(line, disp_pos, font[str[pos]-0x20], size);
+        disp_pos += (check_chr_width(font[str[pos]-0x20]) + 1 + spacing)*size;
+        pos++;
+    }
+}
         pos++;
     }
 }