微调

hgdriver/hgdev/hg_scanner_239.cpp

@@ -231,6 +231,7 @@ std::string hg_scanner_239::control_fetch(int addr, int val, int size)
 }
 std::string hg_scanner_239::get_fpga(void)
 {
+	std::lock_guard<std::mutex>      lock(io_lock_);
 	int val = 0,
 		ret = read_register(setting3399::SR_GET_MBVERSION_LENGHT, &val);
 	std::string fpga("");
@@ -247,6 +248,7 @@ std::string hg_scanner_239::get_fpga(void)
 }
 int  hg_scanner_239::get_scan_mode(bool &type)
 {
+	std::lock_guard<std::mutex>      lock(io_lock_);
 	int	val = 0,
 		ret = read_register(setting3399::SR_OS, &val); //val == 1计数模式
 	type =val == 1 ? false : true;