使用了ti的例ble_examples-simplelink_cc2640r2_sdk-3.40\examples\rtos\CC2640R2_LAUNCHXL\ble5apps\simple_serial_socket_server\tirtos\ccs,链接为https://github.com/ti-simplelink/ble_examples/tree/simplelink_cc2640r2_sdk-3.40/examples/rtos/CC2640R2_LAUNCHXL/bleapps/simple_serial_socket_server,在cc2640r2f 7*7的芯片上可以正常使用工作,并且可以正常烧录进cc2640r2f 4*4的芯片上,但是蓝牙手机搜不到?请问需要怎么解决?