Prevent logging internal LVGL errors to stdout

buffyboard/lv_conf.h

@@ -246,7 +246,7 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
 
 /*1: Print the log with 'printf';
  *0: User need to register a callback with `lv_log_register_print_cb()`*/
-#  define LV_LOG_PRINTF   1
+#  define LV_LOG_PRINTF   0
 
 /*Enable/disable LV_LOG_TRACE in modules that produces a huge number of logs*/
 #  define LV_LOG_TRACE_MEM            1

buffyboard/main.c

@@ -211,8 +211,9 @@ int main(int argc, char *argv[]) {
         return 1;
     }
 
-    /* Initialise lvgl */
+    /* Initialise LVGL and set up logging callback */
     lv_init();
+    lv_log_register_print_cb(bbx_log_print_cb);
 
     /* Initialise display */
     lv_display_t *disp = lv_linux_fbdev_create();