chat.c File Reference

#include <cfg/os.h>
#include <sys/timer.h>
#include <dev/uart.h>
#include <stdlib.h>
#include <string.h>
#include <io.h>
#include <memdebug.h>
#include <dev/chat.h>

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Functions
void	NutTraceChat (FILE *stream, uint8_t flags)
	Control chat tracing.
int	NutChatExpectString (NUTCHAT *ci, char *str)
	Wait for a specific string to appear.
int	NutChatExpect (NUTCHAT *ci, char *str)
int	NutChatSend (NUTCHAT *ci, char *str)
	Process a chat send argument.
NUTCHAT *	NutChatCreate (int fd)
	Create a NUTCHAT structure.
void	NutChatDestroy (NUTCHAT *ci)
	Destroy a previously created NUTCHAT structure.
int	NutChat (int fd, CONST char *script)
	Execute a conversational exchange with a serial device.
int	NutChat_P (int fd, PGM_P script)
	Execute a conversational exchange with a serial device.
Variables
uint8_t *	chat_report

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Function Documentation

void NutTraceChat	(	FILE *	stream,
		uint8_t	flags
	)

Control chat tracing.

Parameters:

stream	Pointer to a previously opened stream or null to disable trace output.
flags	Flags to enable specific traces.

Definition at line 89 of file chat.c.

References fprintf_P, and prog_char.

int NutChatExpectString	(	NUTCHAT *	ci,
		char *	str
	)

Wait for a specific string to appear.

Parameters:

ci	Pointer to a NUTCHAT structure, which must have been created by NutChatCreate().
str	Expected string. May be empty if nothing is expected.

Returns:

0 on success, 3 in case of a timeout error while waiting for an expected string, or the index of an abort string plus 4, if one has been received.

Definition at line 131 of file chat.c.

References _read(), NUTCHAT::chat_abomat, NUTCHAT::chat_abort, NUTCHAT::chat_aborts, NUTCHAT::chat_fd, CHAT_MAX_REPORT_SIZE, NUTCHAT::chat_repmat, chat_report, NUTCHAT::chat_report_search, NUTCHAT::chat_report_state, fprintf(), fprintf_P, fputc(), fputs_P, and prog_char.

Referenced by NutChatExpect().

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int NutChatExpect	(	NUTCHAT *	ci,
		char *	str
	)

Definition at line 357 of file chat.c.

References NUTCHAT::chat_arg, CHAT_ARG_ABORT, CHAT_ARG_REPORT, CHAT_ARG_TIMEOUT, NUTCHAT::chat_fd, NUTCHAT::chat_repmat, NUTCHAT::chat_report_state, NutChatExpectString(), and strcmp().

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int NutChatSend	(	NUTCHAT *	ci,
		char *	str
	)

Process a chat send argument.

Parameters:

ci	Pointer to a NUTCHAT structure, which must have been created by NutChatCreate().
str	String containing the chat send argument.

Returns:

0 on success, 1 in case of invalid parameters, 2 in case of an I/O error, 3 in case of a timeout error while waiting for an expected string, or the index of an abort string plus 4, if one has been received.

Definition at line 413 of file chat.c.

References _ioctl(), atol(), NUTCHAT::chat_abort, NUTCHAT::chat_aborts, NUTCHAT::chat_arg, CHAT_ARG_ABORT, CHAT_ARG_REPORT, CHAT_ARG_SEND, CHAT_ARG_TIMEOUT, CHAT_DEFAULT_TIMEOUT, NUTCHAT::chat_fd, CHAT_MAX_ABORTS, CHAT_MAX_REPORT_SIZE, chat_report, NUTCHAT::chat_report_search, malloc(), strlen(), and UART_SETREADTIMEOUT.

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NUTCHAT* NutChatCreate

(

int

fd

)

Create a NUTCHAT structure.

Returns:

Pointer to a new NUTCHAT structure.

Definition at line 516 of file chat.c.

References NUTCHAT::chat_fd, malloc(), and memset().

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void NutChatDestroy

(

NUTCHAT *

ci

)

Destroy a previously created NUTCHAT structure.

Parameters:

ci	Pointer to a NUTCHAT structure, which must have been created by NutChatCreate().

Definition at line 533 of file chat.c.

References NUTCHAT::chat_abort, NUTCHAT::chat_aborts, and free().

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int NutChat	(	int	fd,
		CONST char *	script
	)

Execute a conversational exchange with a serial device.

Its primary purpose is to establish a modem connection.

Parameters:

fd	Descriptor of a previously opened device.
script	Pointer to a string containing the chat script.

Returns:

0 on success, 1 in case of invalid parameters, 2 in case of an I/O error, 3 in case of a timeout error while waiting for an expected string, or the index of an abort string plus 4, if one has been received.

Definition at line 662 of file chat.c.

References free(), and strdup().

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int NutChat_P	(	int	fd,
		PGM_P	script
	)

Execute a conversational exchange with a serial device.

Similar to NutChat() except that the chat string is located in program memory.

Returns:

0 on success, 1 in case of invalid parameters, 2 in case of an I/O error, 3 in case of a timeout error while waiting for an expected string, or the index of an abort string plus 4, if one has been received.

Definition at line 689 of file chat.c.

References free(), malloc(), strcpy_P, and strlen_P.

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Variable Documentation

uint8_t* chat_report

Definition at line 75 of file chat.c.

Referenced by NutChatExpectString(), and NutChatSend().