fixup set log level fault

Signed-off-by: FuangCao <cavan.cao@foxmail.com>

Application/app/bms_message.c

@@ -32,7 +32,7 @@ void process_bms_message(can_frame_t *frame, int len){
 	int result = 0;
 	uint8_t *data = NULL;
 	int data_len = 0;
-	set_log_all(L_debug);
+	// set_log_all(L_debug);
 	switch(frame->key) {
 		case CAN_KEY_BMS_SET_POWER:
 			if (len != sizeof(pwr_cmd_t)){
@@ -198,9 +198,11 @@ void process_bms_message(can_frame_t *frame, int len){
 			break;
 		}
 		case CAN_KEY_SET_LOGGER:
-			if (len != 2) {
+			if (len < 1) {
 				result = 1;
-			}else {
+			} else if (len < 2) {
+				set_log_all(frame->data[0]);
+			} else {
 				set_log_level(frame->data[0], frame->data[1]);
 			}
 			protocol_send_ack(frame->head.can_addr, frame->key, result);