dprintf("led_matrix_config.enable = %d\n", led_matrix_config.enable);
dprintf("led_matrix_config.mode = %d\n", led_matrix_config.mode);
dprintf("led_matrix_config.val = %d\n", led_matrix_config.val);
dprintf("led_matrix_config.enable = %d\n", led_matrix_config.enable);
dprintf("led_matrix_config.mode = %d\n", led_matrix_config.mode);
dprintf("led_matrix_config.val = %d\n", led_matrix_config.val);