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fix(esp-modem): Improve PPP exit sequence

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* Implement retry mechanism if escape PPP mode failed
* Stop networking and checking for NO-CARRIER manually on PPP exit

Closes https://github.com/espressif/esp-protocols/issues/47
This commit is contained in:
David Cermak
2022-06-05 15:43:56 +02:00
parent ebf122bd36
commit 1e0aefd72a
2 changed files with 47 additions and 19 deletions
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53
components/esp_modem/src/esp_modem_dce.cpp
View File

@ -12,7 +12,9 @@
// See the License for the specific language governing permissions and
// limitations under the License.
#include <list>
#include <unistd.h>
#include <cstring>
#include "cxx_include/esp_modem_dte.hpp"
#include "cxx_include/esp_modem_dce.hpp"
@ -27,24 +29,41 @@ bool DCE_Mode::set(DTE *dte, ModuleIf *device, Netif &netif, modem_mode m)
case modem_mode::UNDEF:
break;
case modem_mode::COMMAND_MODE:
if (mode == modem_mode::COMMAND_MODE) {
return false;
{
if (mode == modem_mode::COMMAND_MODE) {
return false;
}
netif.stop();
SignalGroup signal;
dte->set_read_cb([&](uint8_t *data, size_t len) -> bool {
if (memchr(data, '\n', len)) {
ESP_LOG_BUFFER_HEXDUMP("esp-modem: debug_data", data, len, ESP_LOG_DEBUG);
const auto pass = std::list<std::string_view>({"NO CARRIER", "DISCONNECTED"});
std::string_view response((char *) data, len);
for (auto &it : pass)
if (response.find(it) != std::string::npos) {
signal.set(1);
return true;
}
}
return false;
});
netif.wait_until_ppp_exits();
if (!signal.wait(1, 2000)) {
if (!device->set_mode(modem_mode::COMMAND_MODE)) {
mode = modem_mode::UNDEF;
return false;
}
}
dte->set_read_cb(nullptr);
if (!dte->set_mode(modem_mode::COMMAND_MODE)) {
mode = modem_mode::UNDEF;
return false;
}
mode = m;
return true;
}
netif.stop();
if (!device->set_mode(modem_mode::COMMAND_MODE)) {
return false;
}
dte->set_read_cb([&](uint8_t *data, size_t len) -> bool {
ESP_LOG_BUFFER_HEXDUMP("esp-modem: debug_data", data, len, ESP_LOG_INFO);
return false;
});
netif.wait_until_ppp_exits();
dte->set_read_cb(nullptr);
if (!dte->set_mode(modem_mode::COMMAND_MODE)) {
return false;
}
mode = m;
return true;
break;
case modem_mode::DATA_MODE:
if (mode == modem_mode::DATA_MODE) {
return false;