add centered text

main/hello_world_main.c

@@ -184,6 +184,22 @@ void put_line(uint8_t line, char *str, uint8_t spacing, uint8_t size){
         pos++;
     }
 }
+
+void put_line_center(uint8_t line, char *str, uint8_t spacing, uint8_t size){
+    uint8_t pos = 0;
+    uint8_t txt_length = 0;
+
+    while(str[pos] != 0){
+        txt_length += (check_chr_width(font[str[pos]-0x20]) + 1 + spacing)*size;
+        pos++;
+    }
+    pos=0;
+
+    uint8_t disp_pos = 65-(txt_length/2);
+
+    while(str[pos] != 0){
+        put_chr(line, disp_pos, font[str[pos]-0x20], size);
+        disp_pos += (check_chr_width(font[str[pos]-0x20]) + 1 + spacing)*size;
         pos++;
     }
 }
@@ -202,8 +218,7 @@ void app_main(void)
 {
     printf("Hello world!\n");
 
-    put_line(0, "429 Amalienplatz");
+    put_line(2, "429 Amalienplatz", 1, 1);
-    put_line(1, "0123abcd");
 
     gpio_config_t io_conf;
     //disable interrupt