mirror of git://git.sysmocom.de/ofono
quectel: replace g_at_chat_set_wakeup_command() with g_at_chat_retry()
If the modem isn't powered on, the use of g_at_chat_set_wakeup_command() makes ofono send out AT strings in an endless loop. Avoid this by using g_at_chat_retry() in a timer instead.
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@ -99,6 +99,9 @@ struct quectel_data {
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int mux_ready_count;
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int initial_ldisc;
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struct l_gpio_writer *gpio;
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struct l_timeout *init_timeout;
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size_t init_count;
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guint init_cmd;
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};
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struct dbus_hw {
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@ -186,6 +189,7 @@ static void quectel_remove(struct ofono_modem *modem)
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g_at_chat_unregister(data->aux, data->cpin_ready);
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ofono_modem_set_data(modem, NULL);
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l_timeout_remove(data->init_timeout);
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l_gpio_writer_free(data->gpio);
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g_at_chat_unref(data->aux);
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g_at_chat_unref(data->modem);
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@ -867,6 +871,47 @@ static void ate_cb(int ok, GAtResult *result, void *user_data)
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cmux_cb, modem, NULL);
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}
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static void init_cmd_cb(gboolean ok, GAtResult *result, void *user_data)
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{
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struct ofono_modem *modem = user_data;
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struct quectel_data *data = ofono_modem_get_data(modem);
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const char *rts_cts;
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DBG("%p", modem);
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if (!ok)
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return;
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rts_cts = ofono_modem_get_string(modem, "RtsCts");
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if (strcmp(rts_cts, "on") == 0)
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g_at_chat_send(data->uart, "AT+IFC=2,2; E0", none_prefix,
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ate_cb, modem, NULL);
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else
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g_at_chat_send(data->uart, "ATE0", none_prefix, ate_cb, modem,
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NULL);
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l_timeout_remove(data->init_timeout);
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data->init_timeout = NULL;
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}
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static void init_timeout_cb(struct l_timeout *timeout, void *user_data)
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{
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struct ofono_modem *modem = user_data;
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struct quectel_data *data = ofono_modem_get_data(modem);
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DBG("%p", modem);
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if (data->init_count++ >= 20) {
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ofono_error("failed to init modem after 20 attempts");
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close_serial(modem);
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return;
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}
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g_at_chat_retry(data->uart, data->init_cmd);
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l_timeout_modify_ms(timeout, 500);
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}
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static int open_serial(struct ofono_modem *modem)
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{
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struct quectel_data *data = ofono_modem_get_data(modem);
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@ -910,18 +955,15 @@ static int open_serial(struct ofono_modem *modem)
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* a few 'AT' bytes to detect the host UART bitrate, but the RDY is
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* lost.
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*
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* the wakeup command feature is (mis)used to support all three
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* scenarious by sending AT commands until the modem responds with OK,
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* at which point the modem is ready.
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* Handle all three cases by issuing a plain AT command. The modem
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* answers with OK when it is ready. Create a timer to re-issue
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* the AT command at regular intervals until the modem answers.
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*/
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g_at_chat_set_wakeup_command(data->uart, "AT\r", 500, 10000);
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if (strcmp(rts_cts, "on") == 0)
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g_at_chat_send(data->uart, "AT+IFC=2,2; E0", none_prefix,
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ate_cb, modem, NULL);
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else
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g_at_chat_send(data->uart, "ATE0", none_prefix, ate_cb, modem,
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NULL);
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data->init_count = 0;
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data->init_cmd = g_at_chat_send(data->uart, "AT", none_prefix,
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init_cmd_cb, modem, NULL);
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data->init_timeout = l_timeout_create_ms(500, init_timeout_cb, modem,
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NULL);
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return -EINPROGRESS;
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}
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