28ac1f70bf
In a previous commit, a check was added to ensure modem was properly attached to packet service before initializing PPP. Failure to perform this check can lead to the dreaded 'NO CARRIER' issue. While this is a nice idea, the implementation was lacking because when the check failed, the entire modem initialization procedure was restarted from square one. For modems/bearers that were slow to attach, this is potentially disastrous. The proper solution is to loop only the 'AT+CGATT?' part until it succeeds, or fails N times. This commit implements this looping behavior (using the work queue). Signed-off-by: Benjamin Lindqvist <benjamin.lindqvist@endian.se>
90 lines
2.4 KiB
Plaintext
90 lines
2.4 KiB
Plaintext
# Copyright (c) 2020 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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config MODEM_GSM_PPP
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bool "Support GSM modems"
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select MODEM_CONTEXT
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select MODEM_CMD_HANDLER
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select MODEM_IFACE_UART
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help
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Enable GSM modems that support standard AT commands and PPP.
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if MODEM_GSM_PPP
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choice
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prompt "Modem type"
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default MODEM_GSM_GENERIC
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help
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Type/manufacturer of the GSM modem
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config MODEM_GSM_GENERIC
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bool "Generic GSM modem"
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help
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The modem does not need any special handling etc.
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config MODEM_GSM_SIMCOM
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bool "SIMCOM modem"
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help
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Use this if you have SIMCOM based modem like SIM800 etc.
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endchoice
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config MODEM_GSM_UART_NAME
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string "UART device name the modem is connected to"
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config MODEM_GSM_RX_STACK_SIZE
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int "Size of the stack allocated for receiving data from modem"
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default 512
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help
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Sets the stack size which will be used by the GSM RX thread.
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config MODEM_GSM_INIT_PRIORITY
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int "Init priority for the GSM modem driver"
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default 42
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range 0 99
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help
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The GSM modem is initialized in POST_KERNEL using priority in
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the range 0-99.
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config MODEM_GSM_APN
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string "Access Point Name"
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default "internet"
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help
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Specify Access Point Name, i.e. the name to identify Internet IP
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GPRS cellular data context.
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config GSM_PPP_AUTOSTART
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bool "Auto-start PPP at boot"
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default y
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help
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This setting lets driver connect to network and initialize PPP at
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boot. Unselect this if you want to run application code before
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modem connects to network. See contents of "drivers/gsm_ppp.h"
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to get an idea of the API.
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config MODEM_GSM_ATTACH_TIMEOUT
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int "Timeout for attaching to packet service"
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default 30
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help
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Before activating PPP, attachment to packet service is checked
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using AT+CGATT. This setting dictates how much time in seconds
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we give the modem before giving up.
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config MODEM_GSM_MANUAL_MCCMNO
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string "MCC/MNO for establishing network connection"
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help
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This setting is used in the AT+COPS command to set the MCC/MNO
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for the network connection context. This value is specific to
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the network provider and may need to be changed if auto is not
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selected.
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config MODEM_GSM_FACTORY_RESET_AT_BOOT
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bool "Factory reset modem at boot"
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help
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If this is enabled, the modem will be reset to factory default
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settings first thing in the initialization sequence. This is
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helpful if your modem has a tendency to get stuck due to cached
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state.
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endif
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