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/* (c) 2002-2004 by Marcin Wiacek and Michal Cihar */
#include "../../gsmstate.h"
#if defined(GSM_ENABLE_AT) || defined(GSM_ENABLE_BLUEAT) || defined(GSM_ENABLE_IRDAAT)
#include <stdio.h>
#include <string.h>
#include "../../gsmcomon.h"
#include "at.h"
static GSM_Error AT_WriteMessage (GSM_StateMachine *s, unsigned char *buffer,
int length, unsigned char type)
{
int i,sent = 0;
GSM_DumpMessageLevel2(s, buffer, length, type);
GSM_DumpMessageLevel3(s, buffer, length, type);
if (s->Protocol.Data.AT.FastWrite) {
while (sent != length) {
if ((i = s->Device.Functions->WriteDevice(s,buffer + sent, length - sent)) == 0) {
return ERR_DEVICEWRITEERROR;
}
sent += i;
}
} else {
for (i=0;i<length;i++) {
if (s->Device.Functions->WriteDevice(s,buffer+i,1)!=1) return ERR_DEVICEWRITEERROR;
/* For some phones like Siemens M20 we need to wait a little
* after writing each char. Possible reason: these phones
* can't receive so fast chars or there is bug here in Gammu */
my_sleep(1);
}
my_sleep(400);
}
return ERR_NONE;
}
typedef struct {
char *text;
int lines;
} SpecialAnswersStruct;
static GSM_Error AT_StateMachine(GSM_StateMachine *s, unsigned char rx_char)
{
GSM_Protocol_Message Msg2;
GSM_Protocol_ATData *d = &s->Protocol.Data.AT;
int i;
/* These are lines with end of "normal" answers */
static char *StartStrings[] = {
"OK" , "ERROR" ,
"+CME ERROR:" , "+CMS ERROR:" ,
"+CPIN: " , /*A2D issue*/
NULL};
/* Some info from phone can be inside "normal" answers
* It starts with strings written here
*/
static SpecialAnswersStruct SpecialAnswers[] = {
{"_OSIGQ:" ,1}, {"_OBS:" ,1},
{"^SCN:" ,1}, {"+CGREG:" ,1},
{"+CBM:" ,1}, {"+CMT:" ,2},
{"+CMTI:" ,1}, {"+CDS:" ,2},
{"+CREG:" ,1},
{"RING" ,1}, {"NO CARRIER" ,1},
{"NO ANSWER" ,1}, {"+COLP" ,1},
{"+CLIP" ,1},
{NULL ,1}};
/* Ignore leading CR, LF and ESC */
if (d->Msg.Length == 0) {
if (rx_char == 10 || rx_char == 13 || rx_char == 27) return ERR_NONE;
d->LineStart = d->Msg.Length;
}
if (d->Msg.BufferUsed < d->Msg.Length + 2) {
d->Msg.BufferUsed = d->Msg.Length + 2;
d->Msg.Buffer = (unsigned char *)realloc(d->Msg.Buffer,d->Msg.BufferUsed);
}
d->Msg.Buffer[d->Msg.Length++] = rx_char;
d->Msg.Buffer[d->Msg.Length ] = 0;
switch (rx_char) {
case 0:
break;
case 10:
case 13:
if (!d->wascrlf) d->LineEnd = d->Msg.Length-1;
d->wascrlf = true;
if (d->Msg.Length > 0 && rx_char == 10 && d->Msg.Buffer[d->Msg.Length-2]==13) {
i = 0;
while (StartStrings[i] != NULL) {
if (strncmp(StartStrings[i],d->Msg.Buffer+d->LineStart,strlen(StartStrings[i])) == 0) {
s->Phone.Data.RequestMsg = &d->Msg;
s->Phone.Data.DispatchError = s->Phone.Functions->DispatchMessage(s);
d->Msg.Length = 0;
break;
}
i++;
}
if (d->Msg.Length == 0) break;
i = 0;
while (SpecialAnswers[i].text != NULL) {
if (strncmp(SpecialAnswers[i].text,d->Msg.Buffer+d->LineStart,strlen(SpecialAnswers[i].text)) == 0) {
/* We need something better here */
if (s->Phone.Data.RequestID == ID_GetNetworkInfo && strncmp(SpecialAnswers[i].text,"+CREG:",6) == 0) {
i++;
continue;
}
d->SpecialAnswerStart = d->LineStart;
d->SpecialAnswerLines = SpecialAnswers[i].lines;
}
i++;
}
if (d->SpecialAnswerLines == 1) {
/* This is end of special answer. We copy it and send to phone module */
Msg2.Buffer = malloc(d->LineEnd - d->SpecialAnswerStart + 3);
memcpy(Msg2.Buffer,d->Msg.Buffer+d->SpecialAnswerStart,d->LineEnd - d->SpecialAnswerStart + 2);
Msg2.Length = d->LineEnd - d->SpecialAnswerStart + 2;
Msg2.Buffer[Msg2.Length] = 0;
s->Phone.Data.RequestMsg = &Msg2;
s->Phone.Data.DispatchError = s->Phone.Functions->DispatchMessage(s);
free(Msg2.Buffer);
/* We cut special answer from main buffer */
d->Msg.Length = d->SpecialAnswerStart;
if (d->Msg.Length != 0) d->Msg.Length = d->Msg.Length - 2;
/* We need to find earlier values of all variables */
d->wascrlf = false;
d->LineStart = 0;
for (i=0;i<d->Msg.Length;i++) {
switch(d->Msg.Buffer[i]) {
case 0:
break;
case 10:
case 13:
if (!d->wascrlf) d->LineEnd = d->Msg.Length-1;
d->wascrlf = true;
break;
default:
if (d->wascrlf) {
d->LineStart = d->Msg.Length-1;
d->wascrlf = false;
}
}
}
d->Msg.Buffer[d->Msg.Length] = 0;
}
if (d->SpecialAnswerLines > 0) d->SpecialAnswerLines--;
}
break;
case 'T':
/* When CONNECT string received, we know there will not follow
* anything AT related, after CONNECT can follow ppp data, alcabus
* data and also other things.
*/
if (strncmp(d->Msg.Buffer+d->LineStart, "CONNECT", 7) == 0) {
s->Phone.Data.RequestMsg = &d->Msg;
s->Phone.Data.DispatchError = s->Phone.Functions->DispatchMessage(s);
d->LineStart = -1;
d->Msg.Length = 0;
break;
}
default:
if (d->wascrlf) {
d->LineStart = d->Msg.Length-1;
d->wascrlf = false;
}
if (d->EditMode) {
if (strlen(d->Msg.Buffer+d->LineStart) == 2 && strncmp(d->Msg.Buffer+d->LineStart,"> ",2)==0) {
s->Phone.Data.RequestMsg = &d->Msg;
s->Phone.Data.DispatchError = s->Phone.Functions->DispatchMessage(s);
}
}
}
return ERR_NONE;
}
static GSM_Error AT_Initialise(GSM_StateMachine *s)
{
GSM_Protocol_ATData *d = &s->Protocol.Data.AT;
d->Msg.Buffer = NULL;
d->Msg.BufferUsed = 0;
d->Msg.Length = 0;
d->Msg.Type = 0;
d->SpecialAnswerLines = 0;
d->LineStart = -1;
d->LineEnd = -1;
d->wascrlf = false;
d->EditMode = false;
d->FastWrite = false;
s->Device.Functions->DeviceSetDtrRts(s,true,true);
return s->Device.Functions->DeviceSetSpeed(s,s->Speed);
}
static GSM_Error AT_Terminate(GSM_StateMachine *s)
{
free(s->Protocol.Data.AT.Msg.Buffer);
return ERR_NONE;
}
GSM_Protocol_Functions ATProtocol = {
AT_WriteMessage,
AT_StateMachine,
AT_Initialise,
AT_Terminate
};
#endif
/* How should editor hadle tabs in this file? Add editor commands here.
* vim: noexpandtab sw=8 ts=8 sts=8:
*/
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