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at: wake only when sending AT commands

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Allow the modem to enter soft sleep when
we don't talk to the modem using AT commands.
This was already the case in suspend, but
not during runtime. By only waking the modem
from soft sleep when we need to send
an AT command, we can save some power.
This commit is contained in:
Dylan Van Assche
2021-05-23 20:00:42 +02:00
parent 64145acbae
commit e690e2a17d
3 changed files with 47 additions and 15 deletions
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36
src/at.c
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@@ -6,6 +6,7 @@
#include "at.h"
#include "suspend.h"
#include "gpio.h"
#include <fcntl.h>
#include <stdio.h>
@@ -59,6 +60,10 @@ static gboolean send_at_command(struct EG25Manager *manager)
int ret, len = 0;
if (at_cmd) {
/* Wake up the modem from soft sleep before sending an AT command */
gpio_sequence_wake(manager);
/* Send AT command */
if (at_cmd->subcmd == NULL && at_cmd->value == NULL && at_cmd->expected == NULL)
len = sprintf(command, "AT+%s\r\n", at_cmd->cmd);
else if (at_cmd->subcmd == NULL && at_cmd->value == NULL)
@@ -75,23 +80,28 @@ static gboolean send_at_command(struct EG25Manager *manager)
g_warning("Couldn't write full AT command: wrote %d/%d bytes", ret, len);
g_message("Sending command: %s", g_strstrip(command));
} else if (manager->modem_state < EG25_STATE_CONFIGURED) {
if (manager->modem_iface == MODEM_IFACE_MODEMMANAGER) {
} else {
/* Allow the modem to enter soft sleep again when we sent the AT command*/
gpio_sequence_sleep(manager);
if (manager->modem_state < EG25_STATE_CONFIGURED) {
if (manager->modem_iface == MODEM_IFACE_MODEMMANAGER) {
#ifdef HAVE_MMGLIB
MMModemState modem_state = mm_modem_get_state(manager->mm_modem);
MMModemState modem_state = mm_modem_get_state(manager->mm_modem);
if (manager->mm_modem && modem_state >= MM_MODEM_STATE_REGISTERED)
modem_update_state(manager, modem_state);
else
manager->modem_state = EG25_STATE_CONFIGURED;
if (manager->mm_modem && modem_state >= MM_MODEM_STATE_REGISTERED)
modem_update_state(manager, modem_state);
else
manager->modem_state = EG25_STATE_CONFIGURED;
#endif
} else {
manager->modem_state = EG25_STATE_CONFIGURED;
} else {
manager->modem_state = EG25_STATE_CONFIGURED;
}
} else if (manager->modem_state == EG25_STATE_SUSPENDING) {
modem_suspend_post(manager);
} else if (manager->modem_state == EG25_STATE_RESETTING) {
manager->modem_state = EG25_STATE_POWERED;
}
} else if (manager->modem_state == EG25_STATE_SUSPENDING) {
modem_suspend_post(manager);
} else if (manager->modem_state == EG25_STATE_RESETTING) {
manager->modem_state = EG25_STATE_POWERED;
}
return FALSE;