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fix(ppp): Fix PPP not working after reboot if no RST (#10264)

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Modem will try to switch to CMUX and then back to COMMAND in order to allow communication with the modem.
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Me No Dev 2024-08-30 18:03:56 +03:00 committed by GitHub
parent 019855ff90
commit b2c805a139
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GPG Key ID: B5690EEEBB952194
1 changed files with 10 additions and 1 deletions
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11
libraries/PPP/src/PPP.cpp
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@ -324,8 +324,17 @@ bool PPPClass::begin(ppp_modem_model_t model, uint8_t uart_num, int baud_rate) {
} else {
// try to communicate with the modem
if (esp_modem_sync(_dce) != ESP_OK) {
log_v("Modem does not respond to AT, maybe in DATA mode? ...exiting network mode");
log_v("Modem does not respond to AT! Switching to COMMAND mode.");
esp_modem_set_mode(_dce, ESP_MODEM_MODE_COMMAND);
if (esp_modem_sync(_dce) != ESP_OK) {
log_v("Modem does not respond to AT! Switching to CMUX mode.");
if (esp_modem_set_mode(_dce, ESP_MODEM_MODE_CMUX) != ESP_OK) {
log_v("Modem failed to switch to CMUX mode!");
} else {
log_v("Switching back to COMMAND mode");
esp_modem_set_mode(_dce, ESP_MODEM_MODE_COMMAND);
}
}
if (esp_modem_sync(_dce) != ESP_OK) {
log_e("Modem failed to respond to AT!");
goto err;