#include "legato.h"
#include "le_atDefs_interface.h"

Macros
#define	LE_ATSERVER_TEXT_MAX_LEN 4096

#define	LE_ATSERVER_CME_ERROR "+CME ERROR: "

#define	LE_ATSERVER_CMS_ERROR "+CMS ERROR: "

Typedefs
typedef void(*	le_atServer_DisconnectHandler_t) (void *)

typedef struct le_atServer_Cmd *	le_atServer_CmdRef_t

typedef struct le_atServer_Device *	le_atServer_DeviceRef_t

typedef struct le_atServer_Bridge *	le_atServer_BridgeRef_t

typedef struct le_atServer_ErrorCode *	le_atServer_ErrorCodeRef_t

typedef struct le_atServer_CommandHandler *	le_atServer_CommandHandlerRef_t

typedef void(*	le_atServer_CommandHandlerFunc_t) (le_atServer_CmdRef_t commandRef, le_atServer_Type_t type, uint32_t parametersNumber, void *contextPtr)

typedef void(*	le_atServer_GetTextCallbackFunc_t) (le_atServer_CmdRef_t cmdRef, le_result_t result, const char LE_NONNULL text, uint32_t len, void contextPtr)

Enumerations
enum	le_atServer_Type_t { LE_ATSERVER_TYPE_ACT = 0, LE_ATSERVER_TYPE_PARA = 1, LE_ATSERVER_TYPE_TEST = 2, LE_ATSERVER_TYPE_READ = 3 }

enum	le_atServer_FinalRsp_t { LE_ATSERVER_OK = 0, LE_ATSERVER_NO_CARRIER = 1, LE_ATSERVER_ERROR = 2, LE_ATSERVER_NO_DIALTONE = 3, LE_ATSERVER_BUSY = 4 }

enum	le_atServer_AvailableDevice_t { LE_ATSERVER_ALL_DEVICES = 0, LE_ATSERVER_SPECIFIC_DEVICE = 1 }

Functions
void	le_atServer_ConnectService (void)

le_result_t	le_atServer_TryConnectService (void)

void	le_atServer_SetServerDisconnectHandler (le_atServer_DisconnectHandler_t disconnectHandler, void *contextPtr)

void	le_atServer_DisconnectService (void)

le_result_t	le_atServer_Suspend (le_atServer_DeviceRef_t device)

le_result_t	le_atServer_Resume (le_atServer_DeviceRef_t device)

le_atServer_DeviceRef_t	le_atServer_Open (int fd)

le_result_t	le_atServer_Close (le_atServer_DeviceRef_t device)

le_atServer_CmdRef_t	le_atServer_Create (const char *LE_NONNULL name)

le_result_t	le_atServer_Delete (le_atServer_CmdRef_t commandRef)

le_atServer_CommandHandlerRef_t	le_atServer_AddCommandHandler (le_atServer_CmdRef_t commandRef, le_atServer_CommandHandlerFunc_t handlerPtr, void *contextPtr)

void	le_atServer_RemoveCommandHandler (le_atServer_CommandHandlerRef_t handlerRef)

le_result_t	le_atServer_GetParameter (le_atServer_CmdRef_t commandRef, uint32_t index, char *parameter, size_t parameterSize)

le_result_t	le_atServer_GetCommandName (le_atServer_CmdRef_t commandRef, char *name, size_t nameSize)

le_result_t	le_atServer_GetDevice (le_atServer_CmdRef_t commandRef, le_atServer_DeviceRef_t *deviceRefPtr)

le_result_t	le_atServer_SendIntermediateResponse (le_atServer_CmdRef_t commandRef, const char *LE_NONNULL intermediateRsp)

le_result_t	le_atServer_SendFinalResponse (le_atServer_CmdRef_t commandRef, le_atServer_FinalRsp_t finalResponse, bool customStringAvailable, const char *LE_NONNULL finalRsp)

le_result_t	le_atServer_SendFinalResultCode (le_atServer_CmdRef_t commandRef, le_atServer_FinalRsp_t finalResult, const char *LE_NONNULL pattern, uint32_t errorCode)

le_result_t	le_atServer_SendUnsolicitedResponse (const char *LE_NONNULL unsolRsp, le_atServer_AvailableDevice_t availableDevice, le_atServer_DeviceRef_t device)

le_result_t	le_atServer_EnableEcho (le_atServer_DeviceRef_t device)

le_result_t	le_atServer_DisableEcho (le_atServer_DeviceRef_t device)

le_atServer_BridgeRef_t	le_atServer_OpenBridge (int fd)

le_result_t	le_atServer_CloseBridge (le_atServer_BridgeRef_t bridgeRef)

le_result_t	le_atServer_AddDeviceToBridge (le_atServer_DeviceRef_t deviceRef, le_atServer_BridgeRef_t bridgeRef)

le_result_t	le_atServer_RemoveDeviceFromBridge (le_atServer_DeviceRef_t deviceRef, le_atServer_BridgeRef_t bridgeRef)

void	le_atServer_EnableVerboseErrorCodes (void)

void	le_atServer_EnableExtendedErrorCodes (void)

void	le_atServer_DisableExtendedErrorCodes (void)

le_atServer_ErrorCodeRef_t	le_atServer_CreateErrorCode (uint32_t errorCode, const char *LE_NONNULL pattern)

le_result_t	le_atServer_DeleteErrorCode (le_atServer_ErrorCodeRef_t errorCodeRef)

le_result_t	le_atServer_SetVerboseErrorCode (le_atServer_ErrorCodeRef_t errorCodeRef, const char *LE_NONNULL verboseCode)

le_result_t	le_atServer_GetTextAsync (le_atServer_CmdRef_t cmdRef, le_atServer_GetTextCallbackFunc_t callbackPtr, void *contextPtr)

Detailed Description

Legato AT Commands Server include file.

Copyright (C) Sierra Wireless Inc.

Macro Definition Documentation

#define LE_ATSERVER_CME_ERROR "+CME ERROR: "

CME error pattern

#define LE_ATSERVER_CMS_ERROR "+CMS ERROR: "

CMS error pattern

#define LE_ATSERVER_TEXT_MAX_LEN 4096

Maximum text length.

Typedef Documentation

typedef struct le_atServer_Bridge* le_atServer_BridgeRef_t

Reference type for a AT commands server / AT commands client bridge.

typedef struct le_atServer_Cmd* le_atServer_CmdRef_t

Reference type for an AT command.

typedef void(* le_atServer_CommandHandlerFunc_t) (le_atServer_CmdRef_t commandRef,le_atServer_Type_t type,uint32_t parametersNumber,void *contextPtr)

Handler for the AT command processing.

Note: The argument "parametersNumber" is set only when "type" parameter value is LE_AT_SERVER_TYPE_PARA

typedef struct le_atServer_CommandHandler* le_atServer_CommandHandlerRef_t

Reference type used by Add/Remove functions for EVENT 'le_atServer_Command'

typedef struct le_atServer_Device* le_atServer_DeviceRef_t

Reference type for a AT command device.

typedef void(* le_atServer_DisconnectHandler_t) (void *)

Type for handler called when a server disconnects.

typedef struct le_atServer_ErrorCode* le_atServer_ErrorCodeRef_t

Reference type for an error code.

typedef void(* le_atServer_GetTextCallbackFunc_t) (le_atServer_CmdRef_t cmdRef,le_result_t result,const char *LE_NONNULL text,uint32_t len,void *contextPtr)

Get text callback

Returns

LE_OK: The function succeeded
LE_IO_ERROR: An io error happened and the function couldn't read from the device
LE_FORMAT_ERROR: Received an invalid character or an invalid sequence
LE_FAULT: Failed to remove backspaces

Enumeration Type Documentation

enum le_atServer_AvailableDevice_t

Device availability.

Enumerator
LE_ATSERVER_ALL_DEVICES	action will be done on all bound devices
LE_ATSERVER_SPECIFIC_DEVICE	action will be done on a specified device

enum le_atServer_FinalRsp_t

Final response.

Enumerator
LE_ATSERVER_OK	AT command successfully treated.
LE_ATSERVER_NO_CARRIER	Connection terminated.
LE_ATSERVER_ERROR	Error in AT command treatement.
LE_ATSERVER_NO_DIALTONE	No dialtone detected.
LE_ATSERVER_BUSY	Busy signal detected.

enum le_atServer_Type_t

Received AT command type.

Enumerator
LE_ATSERVER_TYPE_ACT	Action AT command (e.g. 'AT+CMD')
LE_ATSERVER_TYPE_PARA	AT command received with parameters (e.g. 'AT+CMD=x,y')
LE_ATSERVER_TYPE_TEST	Test AT command (e.g. 'AT+CMD=?')
LE_ATSERVER_TYPE_READ	Read AT command (e.g. 'AT+CMD?')

Function Documentation

le_atServer_CommandHandlerRef_t le_atServer_AddCommandHandler	(	le_atServer_CmdRef_t	commandRef,
		le_atServer_CommandHandlerFunc_t	handlerPtr,
		void *	contextPtr
	)

Add handler function for EVENT 'le_atServer_Command'

This event provides information when the AT command is detected.

Parameters

[in]	commandRef	AT command reference
[in]	handlerPtr	Handler to called when the AT command is detected
[in]	contextPtr

le_result_t le_atServer_AddDeviceToBridge	(	le_atServer_DeviceRef_t	deviceRef,
		le_atServer_BridgeRef_t	bridgeRef
	)

This function adds a device to an opened bridge.

Returns

LE_OK The function succeeded.
LE_BUSY The device is already used by the bridge.
LE_FAULT The function failed to add the device to the bridge.

Parameters

[in]	deviceRef	Device reference to add to the bridge
[in]	bridgeRef	Bridge refence

le_result_t le_atServer_Close ( le_atServer_DeviceRef_t device )

This function closes the AT server session on the requested device.

Returns

LE_OK The function succeeded.
LE_BAD_PARAMETER Invalid device reference.
LE_BUSY The requested device is busy.
LE_FAULT Failed to stop the server, check logs for more information.

Parameters

[in] device device to be unbound

le_result_t le_atServer_CloseBridge ( le_atServer_BridgeRef_t bridgeRef )

This function closes an opened bridge.

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to close the bridge.
LE_BUSY The bridge is in use (devices references have to be removed first).

Parameters

[in] bridgeRef Bridge reference

void le_atServer_ConnectService ( void )

Connect the current client thread to the service providing this API. Block until the service is available.

For each thread that wants to use this API, either ConnectService or TryConnectService must be called before any other functions in this API. Normally, ConnectService is automatically called for the main thread, but not for any other thread. For details, see Client-specific Functions.

This function is created automatically.

le_atServer_CmdRef_t le_atServer_Create ( const char *LE_NONNULL name )

This function created an AT command and register it into the AT parser.

Returns

Reference to the AT command.
NULL if an error occurs.

Parameters

[in] name AT command name string

le_atServer_ErrorCodeRef_t le_atServer_CreateErrorCode	(	uint32_t	errorCode,
		const char *LE_NONNULL	pattern
	)

This function creates a custom error code.

Returns

ErrorCode Reference to the created error code
NULL Function failed to create the error code

Note: This function fails to create the error code if the combinaison (errorCode, pattern) already exists or if the errorCode number is lower than 512.

Parameters

[in]	errorCode	Numerical error code
[in]	pattern	Prefix of the response message

le_result_t le_atServer_Delete ( le_atServer_CmdRef_t commandRef )

This function deletes an AT command (i.e. unregister from the AT parser).

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to delete the command.
LE_BUSY Command is in progress.

Parameters

[in] commandRef AT command reference

le_result_t le_atServer_DeleteErrorCode ( le_atServer_ErrorCodeRef_t errorCodeRef )

This function deletes a custom error code.

Returns

LE_OK The function succeeded
LE_FAULT The function failed to delete the error code

Parameters

[in] errorCodeRef Error code reference

le_result_t le_atServer_DisableEcho ( le_atServer_DeviceRef_t device )

This function disables echo on the selected device.

Returns

LE_OK The function succeeded.
LE_BAD_PARAMETER Invalid device reference.

Parameters

[in] device device reference

void le_atServer_DisableExtendedErrorCodes ( void )

This function disables extended error codes on the selected device.

void le_atServer_DisconnectService ( void )

Disconnect the current client thread from the service providing this API.

Normally, this function doesn't need to be called. After this function is called, there's no longer a connection to the service, and the functions in this API can't be used. For details, see Client-specific Functions.

This function is created automatically.

le_result_t le_atServer_EnableEcho ( le_atServer_DeviceRef_t device )

This function enables echo on the selected device.

Returns

LE_OK The function succeeded.
LE_BAD_PARAMETER Invalid device reference.

Parameters

[in] device device reference

void le_atServer_EnableExtendedErrorCodes ( void )

This function enables extended error codes on the selected device.

void le_atServer_EnableVerboseErrorCodes ( void )

This function enables verbose error codes on the selected device.

le_result_t le_atServer_GetCommandName	(	le_atServer_CmdRef_t	commandRef,
		char *	name,
		size_t	nameSize
	)

This function can be used to get the AT command string.

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to get the AT command string.

Parameters

[in]	commandRef	AT command reference
[out]	name	AT command string
[in]	nameSize

le_result_t le_atServer_GetDevice	(	le_atServer_CmdRef_t	commandRef,
		le_atServer_DeviceRef_t *	deviceRefPtr
	)

This function can be used to get the device reference in use for an AT command specified with its reference.

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to get the AT command string.

Parameters

[in]	commandRef	AT command reference
[out]	deviceRefPtr	Device reference

le_result_t le_atServer_GetParameter	(	le_atServer_CmdRef_t	commandRef,
		uint32_t	index,
		char *	parameter,
		size_t	parameterSize
	)

This function can be used to get the parameters of a received AT command.

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to get the requested parameter.

Parameters

[in]	commandRef	AT command reference
[in]	index	agument index
[out]	parameter	parameter value
[in]	parameterSize

le_result_t le_atServer_GetTextAsync	(	le_atServer_CmdRef_t	cmdRef,
		le_atServer_GetTextCallbackFunc_t	callbackPtr,
		void *	contextPtr
	)

This function allows the user to register a le_atServer_GetTextCallback_t callback to retrieve text and sends a prompt <CR><LF><greater_than><SPACE> on the current command's device.

Returns

LE_OK The function succeeded.
LE_BAD_PARAMETER Invalid device or command reference.

Parameters

[in]	cmdRef	AT command reference
[in]	callbackPtr	Get text callback
[in]	contextPtr

le_atServer_DeviceRef_t le_atServer_Open ( int fd )

This function opens an AT server session on the requested device.

Returns

Reference to the requested device.
NULL if the device is not available or fd is a BAD FILE DESCRIPTOR.

Note: Make sure to duplicate (man dup) your file descriptor before opening a server session to be able to use the suspend/resume feature

Parameters

[in] fd File descriptor.

le_atServer_BridgeRef_t le_atServer_OpenBridge ( int fd )

This function opens a AT commands server bridge. All unknown AT commands will be sent on this alternative file descriptor thanks to the AT client Service.

Returns

Reference to the requested bridge.
NULL if the device can't be bridged

Parameters

[in] fd File descriptor.

void le_atServer_RemoveCommandHandler ( le_atServer_CommandHandlerRef_t handlerRef )

Remove handler function for EVENT 'le_atServer_Command'

Parameters

[in] handlerRef

le_result_t le_atServer_RemoveDeviceFromBridge	(	le_atServer_DeviceRef_t	deviceRef,
		le_atServer_BridgeRef_t	bridgeRef
	)

This function removes a device from a bridge

Returns

LE_OK The function succeeded.
LE_NOT_FOUND The device is not isued by the specified bridge
LE_BUSY The device is currently in use
LE_FAULT The function failed to add the device to the bridge.

Parameters

[in]	deviceRef	Device reference to add to the bridge
[in]	bridgeRef	Bridge refence

le_result_t le_atServer_Resume ( le_atServer_DeviceRef_t device )

Resume server / enter command mode

When this function is called the server resumes monitoring the fd for events and is able to interpret AT commands again.

Returns

LE_OK Success.
LE_BAD_PARAMETER Invalid device reference.
LE_FAULT Device not monitored

Parameters

[in] device device to be resumed

le_result_t le_atServer_SendFinalResponse	(	le_atServer_CmdRef_t	commandRef,
		le_atServer_FinalRsp_t	finalResponse,
		bool	customStringAvailable,
		const char *LE_NONNULL	finalRsp
	)

This function can be used to send the final response.

Deprecated:: le_atServer_SendFinalResponse() should not be used anymore and will be removed soon. It has been replaced by le_atServer_SendFinalResultCode()

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to send the final response.

Parameters

[in]	commandRef	AT command reference
[in]	finalResponse	Final response to be sent
[in]	customStringAvailable	Custom final response has to be sent instead of the default one.
[in]	finalRsp	custom final response string

le_result_t le_atServer_SendFinalResultCode	(	le_atServer_CmdRef_t	commandRef,
		le_atServer_FinalRsp_t	finalResult,
		const char *LE_NONNULL	pattern,
		uint32_t	errorCode
	)

This function can be used to send the final result code.

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to send the final result code.

Parameters

[in]	commandRef	AT command reference
[in]	finalResult	Final result code to be sent
[in]	pattern	Prefix of the return message
[in]	errorCode	Numeric error code

le_result_t le_atServer_SendIntermediateResponse	(	le_atServer_CmdRef_t	commandRef,
		const char *LE_NONNULL	intermediateRsp
	)

This function can be used to send an intermediate response.

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to send the intermediate response.

Parameters

[in]	commandRef	AT command reference
[in]	intermediateRsp	Intermediate response to be sent

le_result_t le_atServer_SendUnsolicitedResponse	(	const char *LE_NONNULL	unsolRsp,
		le_atServer_AvailableDevice_t	availableDevice,
		le_atServer_DeviceRef_t	device
	)

This function can be used to send the unsolicited response.

Returns

LE_OK The function succeeded.
LE_FAULT The function failed to send the unsolicited response.

Parameters

[in]	unsolRsp	Unsolicited response to be sent
[in]	availableDevice	device to send the unsolicited response
[in]	device	device reference where the unsolicited response has to be sent

void le_atServer_SetServerDisconnectHandler	(	le_atServer_DisconnectHandler_t	disconnectHandler,
		void *	contextPtr
	)

Set handler called when server disconnection is detected.

When a server connection is lost, call this handler then exit with LE_FATAL. If a program wants to continue without exiting, it should call longjmp() from inside the handler.

le_result_t le_atServer_SetVerboseErrorCode	(	le_atServer_ErrorCodeRef_t	errorCodeRef,
		const char *LE_NONNULL	verboseCode
	)

This function adds a verbose message to a specified error code

Returns

LE_OK The function succeeded
LE_FAULT The function failed to set the verbose message

Parameters

[in]	errorCodeRef	Error code reference
[in]	verboseCode	Verbose message

le_result_t le_atServer_Suspend ( le_atServer_DeviceRef_t device )

Suspend server / enter data mode

When this function is called the server stops monitoring the fd for events hence no more I/O operations are done on the fd by the server.

Returns

LE_OK Success.
LE_BAD_PARAMETER Invalid device reference.
LE_FAULT Device not monitored

Parameters

[in] device device to be suspended

le_result_t le_atServer_TryConnectService ( void )

Try to connect the current client thread to the service providing this API. Return with an error if the service is not available.

For each thread that wants to use this API, either ConnectService or TryConnectService must be called before any other functions in this API. Normally, ConnectService is automatically called for the main thread, but not for any other thread. For details, see Client-specific Functions.

This function is created automatically.

Returns

LE_OK if the client connected successfully to the service.
LE_UNAVAILABLE if the server is not currently offering the service to which the client is bound.
LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).
LE_COMM_ERROR if the Service Directory cannot be reached.

/ Build Apps

le_atServer_interface.h File Reference

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation