Use ets_write_char_uart instead of ets_printf in log_printfv

Author: me-no-dev

cores/esp32/esp32-hal-uart.c

@@ -659,8 +659,11 @@ int log_printfv(const char *format, va_list arg)
     }
 #endif
 
-    vsnprintf(temp, len+1, format, arg);
-    ets_printf("%s", temp);
+    int wlen = vsnprintf(temp, len+1, format, arg);
+    //ets_printf("%s", temp);
+    for (int i = 0; i < wlen; i++) {
+        ets_write_char_uart(temp[i]);
+    }
 
 #if !CONFIG_DISABLE_HAL_LOCKS
     if(s_uart_debug_nr != -1 && _uart_bus_array[s_uart_debug_nr].lock){