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/*******************************************************************************
* Copyright (C) ST-Ericsson SA 2011
* License terms: 3-clause BSD license
******************************************************************************/
/**
* @addtogroup ldr_communication_serv
* @{
* @addtogroup z_family
* @{
* @addtogroup ldr_network_layer
* @{
*/
/*******************************************************************************
* Includes
******************************************************************************/
#include <stdlib.h>
#include <string.h>
#include "c_system.h"
#include "t_basicdefinitions.h"
#include "r_z_family.h"
#include "r_z_transport.h"
#include "r_z_network.h"
#include "r_z_protocol.h"
#include "r_debug.h"
#include "r_communication_service.h"
#include "r_critical_section.h"
#ifdef WIN32
#include <windows.h>
#endif
/*******************************************************************************
* Declaration of file local functions
******************************************************************************/
/*******************************************************************************
* File scope types, constants and variables
******************************************************************************/
#define Z_RESET_INBOUND(c, s) do { (c)->ReqData = 0; (c)->RecData = 0; (c)->Target_p = NULL; (c)->State = (s); } while(0);
#define Z_SYNC_HEADER(c, d, t) do { (c)->ReqData = d; (c)->Target_p = t; } while(0);
#define Z_SET_INBOUND(c, s, d) do { (c)->ReqData = d; (c)->RecData = 0; (c)->State = (s); } while(0);
/*******************************************************************************
* Definition of external functions
******************************************************************************/
ErrorCode_e Z_Network_Initialize(Communication_t *Communication_p)
{
if (NULL == Communication_p) {
return E_INVALID_INPUT_PARAMETERS;
}
memset(Z_NETWORK(Communication_p), 0, sizeof(Z_NetworkContext_t));
Z_NETWORK(Communication_p)->Outbound.TxCriticalSection = Do_CriticalSection_Create();
/* Simulate a finished read to get the inbound state-machine going. */
Z_Network_ReadCallback(NULL, 0, Communication_p->CommunicationDevice_p);
return E_SUCCESS;
}
ErrorCode_e Z_Network_Shutdown(const Communication_t *const Communication_p)
{
Do_CriticalSection_Destroy(&(Z_NETWORK(Communication_p)->Outbound.TxCriticalSection));
return E_SUCCESS;
}
void Z_Network_ReadCallback(const void *Data_p, const uint32 Length, void *Param_p)
{
Communication_t *Communication_p = (Communication_t *)(((CommunicationDevice_t *)Param_p)->Object_p);
CommandData_t CmdData;
Z_NETWORK(Communication_p)->Inbound.RecData += Length;
if (Z_NETWORK(Communication_p)->Inbound.ReqData == 0) {
Z_Inbound_t *In_p = &(Z_NETWORK(Communication_p)->Inbound);
if (In_p->RecData == 0) {
In_p->ReqData = Z_HEADER_LENGTH;
In_p->Target_p = In_p->Scratch;
} else {
CmdData.Payload.Data_p = In_p->Scratch;
(void)Communication_p->Do_CEH_Call_Fn(Communication_p->Object_p, &CmdData);
Z_RESET_INBOUND(In_p, Z_RECEIVE_HEADER);
Z_SYNC_HEADER(In_p, Z_HEADER_LENGTH, In_p->Scratch);
}
}
}
void Z_Network_ReceiverHandler(Communication_t *Communication_p)
{
uint32 ReqData;
Z_Inbound_t *In_p = &(Z_NETWORK(Communication_p)->Inbound);
/* new data for receiving ? */
if (In_p->ReqData > 0) {
ReqData = In_p->ReqData;
In_p->ReqData = 0;
In_p->RecData = 0;
C_(printf("z_network.c (%d) ReqData(%d) RecData(%d) \n", __LINE__, ReqData, In_p->RecData);)
#ifdef CFG_ENABLE_LOADER_TYPE
if (E_SUCCESS != Communication_p->CommunicationDevice_p->Read(In_p->Target_p,
ReqData, Z_Network_ReadCallback, Communication_p->CommunicationDevice_p)) {
/* Read failed! Return to previous state. */
In_p->ReqData = ReqData;
}
#else
(void)Communication_p->CommunicationDevice_p->Read(In_p->Target_p,
ReqData, Z_Network_ReadCallback, Communication_p->CommunicationDevice_p);
#endif
}
/* check for receiver synchronization */
if (In_p->State == Z_RECEIVE_ERROR) {
In_p->ReqData = 0;
In_p->RecData = 0;
#ifdef CFG_ENABLE_LOADER_TYPE
if (TRUE == Communication_p->CommunicationDevice_p->Read(In_p->Target_p,
Z_HEADER_LENGTH, Z_Network_ReadCallback,
Communication_p->CommunicationDevice_p)) {
In_p->State = Z_RECEIVE_HEADER;
}
#else
(void)Communication_p->CommunicationDevice_p->Read(In_p->Target_p,
Z_HEADER_LENGTH, Z_Network_ReadCallback,
Communication_p->CommunicationDevice_p);
In_p->State = Z_RECEIVE_HEADER;
#endif
}
}
void Z_Network_WriteCallback(const void *Data_p, const uint32 Length, void *Param_p)
{
}
ErrorCode_e Z_Network_TransmiterHandler(Communication_t *Communication_p, Z_SendingContent_t *SendingContent_p)
{
uint8 *Data_p = SendingContent_p->Data_p;
uint8 Size = SendingContent_p->Size;
Z_Outbound_t *Out_p = &(Z_NETWORK(Communication_p)->Outbound);
if (!Do_CriticalSection_Enter(Out_p->TxCriticalSection)) {
return E_SUCCESS;
}
switch (Out_p->State) {
case Z_SEND_IDLE:
/* get next packet for transmitting */
Out_p->State = Z_SEND_PACKET;
/* FALLTHROUGH */
case Z_SEND_PACKET:
if (E_SUCCESS == Communication_p->CommunicationDevice_p->Write(Data_p,
Size,
Z_Network_WriteCallback, Communication_p->CommunicationDevice_p)) {
Out_p->State = Z_SENDING_PACKET;
} else {
/* error state ?*/
}
/* FALLTHROUGH */
case Z_SENDING_PACKET:
Out_p->State = Z_SEND_IDLE;
break;
}
Do_CriticalSection_Leave(Out_p->TxCriticalSection);
return E_SUCCESS;
}
/*******************************************************************************
* Definition of internal functions
******************************************************************************/
/** @} */
/** @} */
/** @} */
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