ATD command is used to switch generic device to the data mode
by dialing GPRS_SRC. The generic version of the command was incorrect
`ATD*99##` (containing extra trailing # char, which is accepted by most
devices). Command has been fixed, but the extra #'s been kept for devices
that we cannot test (to be fixed in IDFGH-9470).
Closes https://github.com/espressif/esp-protocols/issues/433
This test exhibits an issue of getting unexpected data just after
completing a command. The DTE rewrites the state to TIMEOUT, but the
signal has been already triggered, thus results in an unexpected state.
Related to Closes https://github.com/espressif/esp-protocols/issues/426
Loopback terminal uses std::async to inject test data to the test
terminal. There was a hazardeous condition when destructing the terminal
while async batch_read() was in progress. Adding a signal and waiting
for destruction solves the issue.
Race condtion:
* First command timeouted, but the reply came just after evaluation and
set signal variable to GOT_LINE
* Second command should timeout too, but a consistency check validates
that it timeouted and at the same time GOT_LINE (from previous step) and
throws an exception
STR:
* Revert change in esp_modem_dte.cpp
* Run TEST_CASE("DTE command races", "[esp_modem]")
Closes https://github.com/espressif/esp-protocols/issues/110
