FreeCalypso > hg > fc-tourmaline
view src/cs/services/atp/atp_uart_handle_msg.c @ 303:f76436d19a7a default tip
!GPRS config: fix long-standing AT+COPS chance hanging bug
There has been a long-standing bug in FreeCalypso going back years:
sometimes in the AT command bring-up sequence of an ACI-only MS,
the AT+COPS command would produce only a power scan followed by
cessation of protocol stack activity (only L1 ADC traces), instead
of the expected network search sequence. This behaviour was seen
in different FC firmware versions going back to Citrine, and seemed
to follow some law of chance, not reliably repeatable.
This bug has been tracked down and found to be specific to !GPRS
configuration, stemming from our TCS2/TCS3 hybrid and reconstruction
of !GPRS support that was bitrotten in TCS3.2/LoCosto version.
ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3
version and had to be pulled from TCS2 - but as it turns out,
there is a new field in the MMR_REG_REQ primitive that needs to be
set correctly, and that psa_mms.c module is the place where this
initialization needed to be added.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 08 Jun 2023 08:23:37 +0000 |
| parents | 4e78acac3d88 |
| children |
line wrap: on
line source
/********************************************************************************/ /* */ /* File Name: atp_uart_handle_msg.c */ /* */ /* Purpose: This file contains the internal function related to */ /* the ATP-UART interface and used to handle incoming */ /* messages */ /* */ /* Note: None. */ /* */ /* Revision History: */ /* 10/04/01 Pascal Pompei */ /* - Create. */ /* */ /* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved. */ /* */ /********************************************************************************/ #include "atp/atp_i.h" #include "atp/atp_uart_i.h" #include "rvm/rvm_use_id_list.h" /********************************************************************************/ /* */ /* Function Name: atp_uart_handle_msg */ /* */ /* Purpose: This function handles incoming messages available from */ /* the mailbox dedicated to the ATP-UART interface. */ /* */ /* Input Parameters: None. */ /* */ /* Output Parameters: None. */ /* */ /* Global Parameters: None. */ /* */ /* Notes: The GSM protocol stack must be started first. */ /* Nevertheless, note that incoming data calls are not */ /* supported for now. Moreover, the AT Parser is alerted */ /* that the call is terminated by receiving an 'Ok' or a */ /* 'No Carrier' final result code only. At last, the GSM */ /* protocol stack is initialized by invoking the */ /* following AT commands: */ /* ATE0 : Echo mode switched off, */ /* AT+CFUN=1 : Set Phone Functionality (Full), */ /* AT+COPS=0 : Operator Selection. */ /* */ /* Revision History: */ /* 10/04/01 Pascal Pompei */ /* - Create. */ /* */ /********************************************************************************/ T_ATP_UART_ERROR_CODES atp_uart_handle_msg (void) { /* Declare local variables. */ UINT16 event_pending = 0x0000; UINT32 in_buffer_size = 0x00000000; BOOLEAN echo_mode_switched_off = FALSE; BOOLEAN error_occurred = FALSE; T_ATP_CALLBACK return_path = {0x00, \ NULL}; T_ATP_ENTITY_MODE mode = {CMD_SUPPORT_ON, \ TXT_MODE, \ COPY_ON}; T_ATP_SW_ENTITY_NAME name = ATP_GSM_NAME; /********************** atp_uart_handle_msg function begins *********************/ /* First, wait until the COM port is activated. */ while ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) { /* Wait for the next event(s) of interest. */ event_pending = rvf_wait (ATP_UART_ALL_EVENT_FLAGS, 0x00000000); /* If an expected event occurred, then get the associated message from */ /* the mailbox dedicated to the ATP-UART interface. */ if (event_pending & ATP_UART_EXPECTED_EVENT) { /* Declare a local block variable. */ T_RV_HDR *incoming_message_p = NULL; /* Get the incoming message from the mailbox dedicated to the */ /* ATP-UART interface. */ incoming_message_p = (T_RV_HDR *) rvf_read_mbox (ATP_UART_MAILBOX); /* Check whether the incoming message is valid. */ if (incoming_message_p == NULL) { ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). Invalid event occurred "); return (RVM_INTERNAL_ERR); } switch (incoming_message_p->msg_id) { /* 'ATP-UART Open COM Port'. */ case ATP_UART_OPEN_COM_PORT: { /* Declare a local block variable. */ UINT8 gsm_basic_init_p[] = {'A', 'T', 'E', '0', \ ATP_CR_CHARACTER}; /* Open the COM port whose number and baud rate are */ /* specified. If any error occurred, then call the */ /* function used whenever any unrecoverable error */ /* occurs and abort. */ if (atp_uart_create_com_port ((unsigned char) (((T_ATP_UART_OPEN_COM_PORT *) (incoming_message_p))->com_port), \ ((T_ATP_UART_OPEN_COM_PORT *) (incoming_message_p))->baud_rate) != RV_OK) { ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). Unable to activate the COM port "); return (RVM_INTERNAL_ERR); } rvf_send_trace (" ATP-UART (handle_msg). COM port properly opened ", 50, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Configure the GSM especially not to echo characters */ /* during 'Command State' and 'Online Command State'. */ /* If any error occurred, then call the function used */ /* whenever any unrecoverable error occurs and abort. */ if (atp_uart_write_com_port (gsm_basic_init_p, \ sizeof (gsm_basic_init_p)) != RV_OK) { ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). GSM configuration failed "); return (RVM_INTERNAL_ERR); } break; } /* Unexpected message. */ default: { rvf_send_trace (" ATP-UART (handle_msg). Unexpected message received ", 53, incoming_message_p->msg_id, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } } (void) rvf_free_buf ((T_RVF_BUFFER *) (incoming_message_p)); } } /* Then, wait for the echo mode being switched off. */ while (echo_mode_switched_off == FALSE) { /* Wait for the next event(s) of interest. */ event_pending = rvf_wait (ATP_UART_ALL_EVENT_FLAGS, 0x00000001); /* If an expected event occurred, then get the associated message from */ /* the mailbox dedicated to the ATP-UART interface. */ if (event_pending & ATP_UART_EXPECTED_EVENT) { /* Declare a local block variable. */ T_RV_HDR *incoming_message_p = NULL; /* Get the incoming message from the mailbox dedicated to the */ /* ATP-UART interface. */ incoming_message_p = (T_RV_HDR *) rvf_read_mbox (ATP_UART_MAILBOX); /* Check whether the incoming message is valid. */ if (incoming_message_p == NULL) { ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). Invalid event occurred "); return (RVM_INTERNAL_ERR); } rvf_send_trace (" ATP-UART (handle_msg). Unexpected message received ", 53, incoming_message_p->msg_id, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); (void) rvf_free_buf ((T_RVF_BUFFER *) (incoming_message_p)); } /* Now, attempt forwarding data to the AT Parser. Thus, initialize the */ /* amount of data to be forwarded. */ in_buffer_size = (UINT32) (ATP_UART_MAX_PACKET_SIZE - \ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left); /* Then, wait for data from the COM port. If any error occurred, then */ /* abort. */ if (atp_uart_read_com_port (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[(gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left]), \ &in_buffer_size) == RV_OK) { /* Declare local block variables. */ UINT32 in_buffer_begin = 0x00000000; UINT32 in_buffer_end = 0x00000000; T_ATP_CMD *cmd_info_p = NULL; T_ATP_CMD_NB cmd_nb = 0x0000; T_ATP_CMD_TYPE cmd_type = UNKNOWN; /* Send every 'Text Command' to the AT Parser separately. */ while (in_buffer_end < in_buffer_size) { /* Skip leading <CR> and <LF> characters. */ for (in_buffer_begin = in_buffer_end; (in_buffer_begin < in_buffer_size) && \ (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin] == ATP_LF_CHARACTER) || \ ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin] == ATP_CR_CHARACTER)); in_buffer_begin++) { } /* Get the 'Text Command' length by searching for the ending */ /* <CR> character. */ for (in_buffer_end = in_buffer_begin; (in_buffer_end < in_buffer_size) && \ ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_end] != ATP_CR_CHARACTER); in_buffer_end++) { } /* Abort whether no ending <CR> character found. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_end] != ATP_CR_CHARACTER) { /* Update the number of bytes left. */ in_buffer_size -= in_buffer_begin; /* Defrag. */ memcpy ((void *) ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p), (void *) (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin])), in_buffer_size); /* Update the number of bytes left. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left = in_buffer_size; break; } /* Otherwise, replace the ending <CR> character by NULL. */ /* Indeed, such a 'Text Command' must be a NULL-terminated */ /* string. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_end++] = '\x00'; rvf_send_trace (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin]), (UINT8) (in_buffer_end - in_buffer_begin - 0x01), NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Check whether the 'Text Command' is a final result code. */ if ((atp_translate_txt_to_cmd (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin]), \ UNKNOWN, \ &cmd_type, \ &cmd_nb, \ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ &cmd_info_p) == RV_OK) && \ (cmd_type == RESULT_CODE)) { /* If needed, de-allocate the command-related information. */ if (cmd_info_p != NULL) { (void) rvf_free_buf ((T_RVF_BUFFER *) (cmd_info_p)); } /* Check whether the 'Text Command' corresponds to the 'OK' */ /* final result code. */ if (cmd_nb == ATP_OK_NB) { rvf_send_trace (" ATP-UART (handle_msg). Echo mode switched off ", 48, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* The echo mode is properly switched off. */ echo_mode_switched_off = TRUE; break; } ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). Echo mode not switched off "); return (RVM_INTERNAL_ERR); } /* If needed, de-allocate the command-related information. */ if (cmd_info_p != NULL) { (void) rvf_free_buf ((T_RVF_BUFFER *) (cmd_info_p)); } } continue; } rvf_send_trace (" ATP-UART (handle_msg). Failed in getting data from the COM port ", 66, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); } /* At last, initialize the remainder of the return path in order to receive */ /* events from the AT parser. */ return_path.addr_id = gbl_atp_uart_ctrl_blk_p->addr_id; /* Register the ATP-UART interface to the AT Parser. If any error occurred, */ /* then call the function used whenever any unrecoverable error occurs and */ /* abort. */ if (atp_reg (name, \ return_path, \ mode, \ &((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id)) != RV_OK) { ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). Registration failed "); return (RVM_INTERNAL_ERR); } rvf_send_trace (" ATP-UART (handle_msg). Registration completed ", 48, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Now, wait for the next events to be handled as long as no error occurs. */ while (error_occurred == FALSE) { /* Wait for the next event(s) of interest. */ event_pending = rvf_wait (ATP_UART_ALL_EVENT_FLAGS, 0x00000001); /* If an expected event occurred, then get the associated message from */ /* the mailbox dedicated to the ATP-UART interface. */ if (event_pending & ATP_UART_EXPECTED_EVENT) { /* Declare a local block variable. */ T_RV_HDR *incoming_message_p = NULL; /* Get the incoming message from the mailbox dedicated to the */ /* ATP-UART interface. */ incoming_message_p = (T_RV_HDR *) rvf_read_mbox (ATP_UART_MAILBOX); /* Check whether the incoming message is valid. */ if (incoming_message_p == NULL) { ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). Invalid event occurred "); return (RVM_INTERNAL_ERR); } switch (incoming_message_p->msg_id) { /* 'ATP Open Port Indication'. */ case ATP_OPEN_PORT_IND: { /* Declare local block variables. */ T_ATP_PORT_INFO gsm_port_info = {NOT_DEFINED_CONFIG, \ ATP_NO_RING_TYPE, \ ATP_ALL_THE_SIGNAL_UNMASK, \ 0x0000}; T_ATP_NO_COPY_INFO gsm_no_copy_info = {RVF_INVALID_MB_ID, \ RVF_INVALID_MB_ID, \ TX_HEADER_OFF, \ 0x00, \ 0x00, \ RX_HEADER_OFF, \ 0x00, \ 0x00, \ NORMAL_PACKET}; T_ATP_CUSTOM_FROM_GSM_INFO *gsm_custom_info_p = NULL; rvf_send_trace (" ATP-UART (handle_msg). 'ATP Open Port Indication' received ", 61, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_MEDIUM, ATP_USE_ID); /* Set custom information associated with the pseudo */ /* GSM Software Entity. If insufficient resources, then */ /* call the function used whenever any unrecoverable */ /* error occurs and abort. */ if (rvf_get_buf (gbl_atp_uart_ctrl_blk_p->mb_id, \ sizeof (T_ATP_CUSTOM_FROM_GSM_INFO), \ (T_RVF_BUFFER **) (&gsm_custom_info_p)) == RVF_RED) { ATP_UART_UNRECOVERABLE_ERROR (RVM_MEMORY_ERR, " ATP-UART (handle_msg). Insufficient resources "); return (RVM_MEMORY_ERR); } gsm_custom_info_p->custom_type = ATP_FROM_GSM_INFO; gsm_custom_info_p->optimal_gsm_max_packet_size = ATP_UART_MAX_PACKET_SIZE; /* Open the virtual modem port with the AT Parser. If */ /* any error occurred, then de-allocate custom */ /* information associated with the pseudo GSM Software */ /* Entity, call the function used whenever any */ /* unrecoverable error occurs and abort. */ if (atp_open_port_rsp (((T_ATP_OPEN_PORT_IND *) (incoming_message_p))->initiator_id, \ ((T_ATP_OPEN_PORT_IND *) (incoming_message_p))->initiator_port_nb, \ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ ATP_UART_GSM_PORT_NB, \ gsm_port_info, \ gsm_no_copy_info, \ (T_ATP_CUSTOM_INFO *) (gsm_custom_info_p), \ OPEN_PORT_OK) != RV_OK) { (void) rvf_free_buf ((T_RVF_BUFFER *) (gsm_custom_info_p)); ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). Unable to open the virtual modem port with the AT Parser "); return (RVM_INTERNAL_ERR); } rvf_send_trace (" ATP-UART (handle_msg). Virtual modem port properly established with the AT Parser ", 84, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* The virtual modem port opened with the AT Parser is */ /* now properly initialized. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).virtual_modem_port_established = TRUE; /* If needed, de-allocate custom information contained */ /* in the 'ATP Open Port Indication'. */ if (((T_ATP_OPEN_PORT_IND *) incoming_message_p)->custom_info_p != NULL) { rvf_free_buf ((T_RVF_BUFFER *) (((T_ATP_OPEN_PORT_IND *) (incoming_message_p))->custom_info_p)); } break; } /* 'ATP Text Command Ready'. */ case ATP_TXT_CMD_RDY: { /* Declare local block variables. */ UINT8 txt_cmd_length = 0x00; T_ATP_TXT_CMD_RDY *txt_cmd_rdy_p = (T_ATP_TXT_CMD_RDY *) (incoming_message_p); rvf_send_trace (" ATP-UART (handle_msg). 'ATP Text Command Ready' received ", 59, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_MEDIUM, ATP_USE_ID); /* If any error occurred, then abort. */ if ((txt_cmd_rdy_p->port_nb != ATP_UART_GSM_PORT_NB) || \ (txt_cmd_rdy_p->txt_cmd_p == NULL)) { rvf_send_trace (" ATP-UART (handle_msg). 'Text Command' transfer failed ", 56, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } /* Get the length of the 'Text Command'. Note that such */ /* a 'Text Command' is a NULL-terminated string. */ txt_cmd_length = (UINT8) (strlen (txt_cmd_rdy_p->txt_cmd_p)); rvf_send_trace (txt_cmd_rdy_p->txt_cmd_p, txt_cmd_length, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Forward the 'Text Command' to the COM port. If any */ /* error occurred, then proceed. */ txt_cmd_rdy_p->txt_cmd_p[txt_cmd_length] = ATP_CR_CHARACTER; if (atp_uart_write_com_port ((UINT8 *) (txt_cmd_rdy_p->txt_cmd_p), \ (txt_cmd_length + 0x00000001)) != RV_OK) { rvf_send_trace (" ATP-UART (handle_msg). 'Text Command' transfer failed ", 56, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); } /* De-allocate the data buffer provided with the 'ATP */ /* Command Ready'. */ (void) rvf_free_buf ((T_RVF_BUFFER *) (txt_cmd_rdy_p->txt_cmd_p)); break; } /* 'ATP No Copy Data Ready'. */ case ATP_NO_COPY_DATA_RDY: { /* Declare a local block variable. */ T_ATP_NO_COPY_DATA_RDY *no_copy_data_rdy_p = (T_ATP_NO_COPY_DATA_RDY *) (incoming_message_p); rvf_send_trace (" ATP-UART (handle_msg). 'ATP No Copy Data Ready' received ", 59, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_MEDIUM, ATP_USE_ID); /* If any error occurred, then abort. */ if ((no_copy_data_rdy_p->port_nb != ATP_UART_GSM_PORT_NB) || \ (no_copy_data_rdy_p->atp_buffer_p == NULL)) { rvf_send_trace (" ATP-UART (handle_msg). Data transfer to the COM port failed ", 62, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } rvf_send_trace (" ATP-UART (handle_msg). Data size ", 35, no_copy_data_rdy_p->buffer_size, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Forward data to the COM port. If any error occurred, */ /* then proceed. */ if (atp_uart_write_com_port (no_copy_data_rdy_p->atp_buffer_p, \ no_copy_data_rdy_p->buffer_size) != RV_OK) { rvf_send_trace (" ATP-UART (handle_msg). Data transfer to the COM port failed ", 62, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); } /* De-allocate the data buffer provided with the 'ATP */ /* No Copy Data Ready'. */ (void) rvf_free_buf ((T_RVF_BUFFER *) (no_copy_data_rdy_p->atp_buffer_p)); break; } /* 'ATP Signal Changed'. */ case ATP_SIGNAL_CHANGED: { /* Declare a local block variable. */ T_ATP_SIGNAL_CHANGED *signal_changed_p = (T_ATP_SIGNAL_CHANGED *) (incoming_message_p); rvf_send_trace (" ATP-UART (handle_msg). 'ATP Signal Changed' received ", 55, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_MEDIUM, ATP_USE_ID); /* If any error occurred, then abort. */ if (signal_changed_p->port_nb != ATP_UART_GSM_PORT_NB) { rvf_send_trace (" ATP-UART (handle_msg). Invalid port number ", 45, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } rvf_send_trace (" ATP-UART (handle_msg). Bit mask ", 34, signal_changed_p->signal, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Update the RS232 control signals associated with the */ /* virtual modem port. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).control_signals = signal_changed_p->signal; break; } /* 'ATP Port Mode Changed'. */ case ATP_PORT_MODE_CHANGED: { /* Declare a local block variable. */ T_ATP_PORT_MODE_CHANGED *port_mode_changed_p = (T_ATP_PORT_MODE_CHANGED *) (incoming_message_p); rvf_send_trace (" ATP-UART (handle_msg). 'ATP Port Mode Changed' received ", 58, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_MEDIUM, ATP_USE_ID); /* If any error occurred, then abort. */ if (port_mode_changed_p->port_nb != ATP_UART_GSM_PORT_NB) { rvf_send_trace (" ATP-UART (handle_msg). Invalid port number ", 45, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } rvf_send_trace (" ATP-UART (handle_msg). Mode ", 30, port_mode_changed_p->mode, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* If the virtual modem port is in 'Data' mode, then */ /* send the escape sequence first. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).virtual_modem_port_mode == ATP_PORT_DATA_MODE) { /* Forward the escape sequence to the COM port. If */ /* any error occurred, then call the function used */ /* whenever any unrecoverable error occurs and */ /* abort. */ if (atp_uart_write_com_port ((UINT8 *) (ATP_ESCAPE_SEQUENCE), \ (sizeof (ATP_ESCAPE_SEQUENCE) - 0x00000001)) != RV_OK) { ATP_UART_UNRECOVERABLE_ERROR (RVM_INTERNAL_ERR, " ATP-UART (handle_msg). 'Escape sequence' not transmitted "); return (RVM_INTERNAL_ERR); } rvf_send_trace (" ATP-UART (handle_msg). 'Escape sequence' properly transmitted ", 64, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); } /* Update the mode of the virtual modem port. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).virtual_modem_port_mode = port_mode_changed_p->mode; break; } /* 'ATP Port Closed'. */ case ATP_PORT_CLOSED: { rvf_send_trace (" ATP-UART (handle_msg). 'ATP Port Closed' received ", 52, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_MEDIUM, ATP_USE_ID); /* If any error occurred, then abort. */ if (((T_ATP_PORT_CLOSED *) (incoming_message_p))->port_nb != ATP_UART_GSM_PORT_NB) { rvf_send_trace (" ATP-UART (handle_msg). Invalid port number ", 45, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } /* The virtual modem port opened with the AT Parser is */ /* now closed. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).virtual_modem_port_established = FALSE; break; } /* 'ATP-UART Start GSM'. */ case ATP_UART_START_GSM: { /* Declare a local block variable. */ UINT8 gsm_init_p[] = {'A', 'T', '+', 'C', 'F', 'U', 'N', '=', '1', ';', '+', 'C', 'O', 'P', 'S', '=', '0', \ ATP_CR_CHARACTER}; rvf_send_trace (" ATP-UART (handle_msg). 'ATP-UART Start GSM' received ", 55, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_MEDIUM, ATP_USE_ID); /* If any error occurred, then abort. */ if (atp_uart_write_com_port (gsm_init_p, \ sizeof (gsm_init_p)) != RV_OK) { rvf_send_trace (" ATP-UART (handle_msg). Unable to start the GSM protocol stack ", 64, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } break; } /* Unexpected message. */ default: { rvf_send_trace (" ATP-UART (handle_msg). Unexpected message received ", 53, incoming_message_p->msg_id, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } } (void) rvf_free_buf ((T_RVF_BUFFER *) (incoming_message_p)); } /* Now, if the flow control is activated, then proceed without getting */ /* any data from the COM port. */ if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).control_signals & ATP_RX_FLOW_UNMASK) == ATP_RX_FLOW_ON) { continue; } /* Otherwise, attempt forwarding data to the AT Parser. Thus, */ /* initialize the amount of data to be forwarded. */ in_buffer_size = (UINT32) (ATP_UART_MAX_PACKET_SIZE - \ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left); /* Then, wait for data from the COM port. If any error occurred, then */ /* abort. */ if (atp_uart_read_com_port (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[(gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left]), \ &in_buffer_size) != RV_OK) { rvf_send_trace (" ATP-UART (handle_msg). Failed in getting data from the COM port ", 66, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); continue; } /* Take new data into account. */ in_buffer_size = (UINT32) ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left + \ in_buffer_size); /* If no virtual modem port established with the AT Parser or if no */ /* data pending for transmission to the AT Parser, then update the */ /* number of bytes left and proceed. */ if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).virtual_modem_port_established == FALSE) || \ (in_buffer_size == 0x00000000)) { (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left = in_buffer_size; continue; } /* Otherwise, re-initialize the number of bytes left. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left = 0x00000000; rvf_send_trace (" ATP-UART (handle_msg). Get data from the COM port ", 52, in_buffer_size, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* At last, depending on the mode, transfert data from the COM port as */ /* 'Text Command' or 'Data'. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).virtual_modem_port_mode == ATP_PORT_CMD_MODE) { /* Declare local block variables. */ UINT32 in_buffer_begin = 0x00000000; UINT32 in_buffer_end = 0x00000000; T_ATP_CMD *cmd_info_p = NULL; T_ATP_CMD_NB cmd_nb = 0x0000; T_ATP_TXT_CMD txt_cmd_p = NULL; T_ATP_CMD_TYPE cmd_type = UNKNOWN; /* Send every 'Text Command' to the AT Parser separately. */ while (in_buffer_end < in_buffer_size) { /* Skip leading <CR> and <LF> characters. */ for (in_buffer_begin = in_buffer_end; (in_buffer_begin < in_buffer_size) && \ (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin] == ATP_LF_CHARACTER) || \ ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin] == ATP_CR_CHARACTER)); in_buffer_begin++) { } /* Get the 'Text Command' length by searching for the ending */ /* <CR> character. */ for (in_buffer_end = in_buffer_begin; (in_buffer_end < in_buffer_size) && \ ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_end] != ATP_CR_CHARACTER); in_buffer_end++) { } /* Abort whether no ending <CR> character found. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_end] != ATP_CR_CHARACTER) { /* Update the number of bytes left. */ in_buffer_size -= in_buffer_begin; /* Defrag. */ memcpy ((void *) ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p), (void *) (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin])), in_buffer_size); /* Update the number of bytes left. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left = in_buffer_size; break; } /* Otherwise, replace the ending <CR> character by NULL. */ /* Indeed, such a 'Text Command' must be a NULL-terminated */ /* string. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_end++] = '\x00'; /* Allocate memory in order to forward the 'Text Command' to */ /* the AT Parser. If insufficient resources, then call the */ /* function used whenever any unrecoverable error occurs and */ /* abort. */ if (rvf_get_buf (gbl_atp_uart_ctrl_blk_p->mb_id, \ (in_buffer_end - in_buffer_begin), \ (T_RVF_BUFFER **) (&txt_cmd_p)) == RVF_RED) { ATP_UART_UNRECOVERABLE_ERROR (RVM_MEMORY_ERR, " ATP-UART (handle_msg). Insufficient resources "); break; } /* Copy the 'Text Command'. */ memcpy ((void *) (txt_cmd_p), (void *) (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_begin])), (in_buffer_end - in_buffer_begin)); rvf_send_trace (txt_cmd_p, (UINT8) (in_buffer_end - in_buffer_begin - 0x01), NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Check whether the 'Text Command' is a final or an */ /* unsolicited result code. */ if ((atp_translate_txt_to_cmd (txt_cmd_p, \ UNKNOWN, \ &cmd_type, \ &cmd_nb, \ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ &cmd_info_p) == RV_OK) && \ (cmd_type == RESULT_CODE)) { /* If the 'Text Command' corresponds to the 'Connect' final */ /* result code, then turn the 'Data Carrier Detect' on */ /* before sending it to the AT Parser (See ITU-T */ /* Recommendation V.250 ter page 32). If any error */ /* occurred, then de-allocate the 'Text Command' and abort. */ if (cmd_nb == ATP_CONNECT_NB) { if (atp_set_signal ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ ATP_UART_GSM_PORT_NB, \ ATP_DCD_1, \ ATP_DCD_UNMASK) != RV_OK) { (void) rvf_free_buf ((T_RVF_BUFFER *) (txt_cmd_p)); /* If needed, de-allocate the command-related */ /* information. */ if (cmd_info_p != NULL) { (void) rvf_free_buf ((T_RVF_BUFFER *) (cmd_info_p)); } rvf_send_trace (" ATP-UART (handle_msg). 'Data Carrier Detect' not turned on ", 61, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } rvf_send_trace (" ATP-UART (handle_msg). 'Data Carrier Detect' properly turned on ", 66, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); } } /* Otherwise, the 'Text Command' is recognized as a preliminary */ /* result code. */ else { cmd_type = PRELIMINARY_RESULT_CODE; } /* If needed, de-allocate the command-related information. */ if (cmd_info_p != NULL) { (void) rvf_free_buf ((T_RVF_BUFFER *) (cmd_info_p)); } /* Forward the 'Text Command' to the AT Parser. If any error */ /* occurred, then de-allocate the 'Text Command' and abort. */ if (atp_send_txt_cmd ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ ATP_UART_GSM_PORT_NB, \ cmd_type, \ txt_cmd_p) != RV_OK) { (void) rvf_free_buf ((T_RVF_BUFFER *) (txt_cmd_p)); rvf_send_trace (" ATP-UART (handle_msg). 'Text Command' failed ", 47, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); break; } } } else { /* Declare local block variables. */ UINT8 no_carrier_count = 0x00; UINT8 no_carrier_p[] = {ATP_CR_CHARACTER, \ ATP_LF_CHARACTER, \ 'N', 'O', ' ', 'C', 'A', 'R', 'R', 'I', 'E', 'R', \ ATP_CR_CHARACTER, \ ATP_LF_CHARACTER}; UINT8 ok_count = 0x00; UINT8 ok_p[] = {ATP_CR_CHARACTER, \ ATP_LF_CHARACTER, \ 'O', 'K', \ ATP_CR_CHARACTER, \ ATP_LF_CHARACTER}; UINT32 in_buffer_count = 0x00000000; UINT32 in_data_size = 0x00000000; T_ATP_CMD_NB result_code_nb = ATP_MAX_NB_OF_RESULT_CODES; /* First, search for 'Ok' or 'No Carrier' final result codes. */ for (in_buffer_count = 0x00000000, \ in_data_size = in_buffer_size; in_buffer_count < in_buffer_size; in_buffer_count++) { /* Search for an 'Ok' final result code. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_count] == ok_p[ok_count]) { /* 'Ok' final result code detected. */ if (++ok_count == sizeof (ok_p)) { result_code_nb = ATP_OK_NB; rvf_send_trace (" ATP-UART (handle_msg). 'Ok' final result code detected ", 57, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Send the remainder to the AT Parser. */ in_data_size = in_buffer_count - (sizeof (ok_p) - 0x00000001); break; } } else { ok_count = 0x00; } /* Search for a 'No Carrier' final result code. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_count] == no_carrier_p[no_carrier_count]) { /* 'No Carrier' final result code detected. */ if (++no_carrier_count == sizeof (no_carrier_p)) { result_code_nb = ATP_NO_CARRIER_NB; rvf_send_trace (" ATP-UART (handle_msg). 'No Carrier' final result code detected ", 65, NULL_PARAM, RV_TRACE_LEVEL_DEBUG_LOW, ATP_USE_ID); /* Send the remainder to the AT Parser. */ in_data_size = in_buffer_count - (sizeof (no_carrier_p) - 0x00000001); break; } } else { no_carrier_count = 0x00; } } /* Then, check for some bytes to be forwarded data to the AT */ /* Parser. */ if (in_data_size > 0x00000000) { /* Forward data to the AT Parser. If any error occurred, then */ /* proceed. */ if (atp_send_data ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ ATP_UART_GSM_PORT_NB, \ (void *) ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p), \ in_data_size, \ &((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left)) != RV_OK) { rvf_send_trace (" ATP-UART (handle_msg). Data transfer to the AT Parser failed ", 63, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); } /* Update the number of bytes left. */ in_data_size -= (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left; in_buffer_size -= in_data_size; /* Check whether some bytes left to be sent to the AT Parser. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left > 0x00000000) { /* Defrag. */ memcpy ((void *) ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p), (void *) (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_data_size])), in_buffer_size); /* Update the number of bytes left. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left = in_buffer_size; continue; } } /* At last, check whether an 'Ok' or a 'No Carrier' final result */ /* code was detected. */ if (result_code_nb != ATP_MAX_NB_OF_RESULT_CODES) { /* Turn the 'Data Carrier Detect' off before sending it to the */ /* AT Parser (See ITU-T Recommendation V.250 ter page 37). */ /* However, proceed whether any error occurred. */ if (((atp_set_signal ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ ATP_UART_GSM_PORT_NB, \ ATP_DCD_0, \ ATP_DCD_UNMASK) != RV_OK) || \ (atp_send_cmd ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).atp_id, \ ATP_UART_GSM_PORT_NB, \ RESULT_CODE, \ result_code_nb, \ NULL) != RV_OK))) { rvf_send_trace (" ATP-UART (handle_msg). Final result code not transmitted ", 59, NULL_PARAM, RV_TRACE_LEVEL_WARNING, ATP_USE_ID); } /* Update the number of bytes left. */ in_buffer_size -= in_buffer_count; /* Update the mode of the virtual modem port. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).virtual_modem_port_mode = ATP_PORT_CMD_MODE; } /* If some data left, then defrag. */ memcpy ((void *) ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p), (void *) (&((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).in_buffer_p[in_buffer_count])), in_buffer_size); /* Update the number of bytes left. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).nb_bytes_left = in_buffer_size; } } return (RVM_OK); } /********************* End of atp_uart_handle_msg function ********************/