FreeCalypso > hg > fc-magnetite
view src/cs/services/atp/atp_uart.c @ 636:57e67ca2e1cb
pcmdata.c: default +CGMI to "FreeCalypso" and +CGMM to model
The present change has no effect whatsoever on Falconia-made and Openmoko-made
devices on which /pcm/CGMI and /pcm/CGMM files have been programmed in FFS
with sensible ID strings by the respective factories, but what should AT+CGMI
and AT+CGMM queries return when the device is a Huawei GTM900 or Tango modem
that has been converted to FreeCalypso with a firmware change? Before the
present change they would return compiled-in defaults of "<manufacturer>" and
"<model>", respectively; with the present change the firmware will self-identify
as "FreeCalypso GTM900-FC" or "FreeCalypso Tango" on the two respective targets.
This firmware identification will become important if someone incorporates an
FC-converted GTM900 or Tango modem into a ZeroPhone-style smartphone where some
high-level software like ofono will be talking to the modem and will need to
properly identify this modem as FreeCalypso, as opposed to some other AT command
modem flavor with different quirks.
In technical terms, the compiled-in default for the AT+CGMI query (which will
always be overridden by the /pcm/CGMI file in FFS if one is present) is now
"FreeCalypso" in all configs on all targets; the compiled-in default for the
AT+CGMM query (likewise always overridden by /pcm/CGMM if present) is
"GTM900-FC" if CONFIG_TARGET_GTM900 or "Tango" if CONFIG_TARGET_TANGO or the
original default of "<model>" otherwise.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 19 Jan 2020 20:14:58 +0000 |
| parents | 945cf7f506b2 |
| children |
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/********************************************************************************/ /* */ /* File Name: atp_uart.c */ /* */ /* Purpose: This file contains the internal functions related to */ /* the ATP-UART interface and used to utilize a COM port */ /* under WIN32. */ /* */ /* Note: None. */ /* */ /* Revision History: */ /* 10/04/01 Pascal Pompei */ /* - Create. */ /* */ /* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved. */ /* */ /********************************************************************************/ #include "atp/atp_uart_i.h" /********************************************************************************/ /* */ /* Function Name: atp_uart_create_com_port */ /* */ /* Purpose: This function creates a COM port. */ /* */ /* Input Parameters: */ /* com_port - Contains the COM port number. */ /* baud_rate - Contains the baud rate (in bits per second). */ /* */ /* Output Parameters: None. */ /* */ /* Global Parameters: None. */ /* */ /* Note: None. */ /* */ /* Revision History: */ /* 02/05/01 David Lamy-Charrier */ /* - Create. */ /* */ /********************************************************************************/ T_ATP_UART_ERROR_CODES atp_uart_create_com_port (T_ATP_UART_COM_PORT com_port, T_ATP_UART_BAUD_RATE baud_rate) { /* Declare local variables. */ DCB control_settings; COMMTIMEOUTS timeouts = {MAXDWORD, \ MAXDWORD, \ 0x0000000A, \ 0x00000000, \ 0x00000000}; /******************* atp_uart_create_com_port function begins *******************/ /* First, update the name associated with the COM port. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_name[3] = (char) ('0' + com_port); /* Then, create the COM port with the following parameters: */ /* - Read/Write access, */ /* - The COM port can not be shared and can not be opened again until the */ /* handle is closed, */ /* - The handle can not be inherited, */ /* - The COM port is just opened (failed if does not exist), */ /* - No specific file attributes, */ /* - No template used. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle = CreateFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_name, (GENERIC_READ | GENERIC_WRITE), 0x00000000, NULL, OPEN_EXISTING, 0x00000000, NULL); /* If any error occurred, then abort. */ if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) { return (RV_INVALID_PARAMETER); } /* Otherwise, having created the COM port, get the default setting */ /* information. However, if any error occurred, then remove the COM port */ /* and abort. */ control_settings.DCBlength = sizeof (DCB); if (GetCommState ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ &control_settings) == FALSE) { (void) atp_uart_remove_com_port (); return (RV_INVALID_PARAMETER); } /* Define the baud rate, as well as the DCB structure settings. */ control_settings.BaudRate = baud_rate; control_settings.fOutxCtsFlow = TRUE; control_settings.fOutxDsrFlow = FALSE; control_settings.fDtrControl = DTR_CONTROL_ENABLE; control_settings.fDsrSensitivity = FALSE; control_settings.fRtsControl = RTS_CONTROL_HANDSHAKE; /* Then, configure the COM port according to the specifications of the DCB */ /* structure, set the timeout parameters for all read and write operations */ /* on the COM port and discard all characters from the output and input */ /* buffers. However, if any error occurred, then remove the COM port and */ /* abort. */ if ((SetCommState ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ &control_settings) == FALSE) || \ (SetCommTimeouts ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ &timeouts) == FALSE) || \ (PurgeComm ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ (PURGE_RXCLEAR | PURGE_TXCLEAR | PURGE_RXABORT | PURGE_TXABORT)) == FALSE)) { (void) atp_uart_remove_com_port (); return (RV_INTERNAL_ERR); } return (RV_OK); } /****************** End of atp_uart_create_com_port function ******************/ /********************************************************************************/ /* */ /* Function Name: atp_uart_write_com_port */ /* */ /* Purpose: This function writes data on the COM port. */ /* */ /* Input Parameters: */ /* data_buffer_p - Pointer on the data to be written. */ /* data_size - Contains the total byte count to be written. */ /* */ /* Output Parameters: None. */ /* */ /* Global Parameters: None. */ /* */ /* Note: Buffer de-allocation is outside the scope of this */ /* function. */ /* */ /* Revision History: */ /* 02/05/01 David Lamy-Charrier */ /* - Create. */ /* */ /********************************************************************************/ T_ATP_UART_ERROR_CODES atp_uart_write_com_port (UINT8 *data_buffer_p, UINT32 data_size) { /* Declare a local variable. */ UINT32 data_size_sent = 0x00000000; /******************** atp_uart_write_com_port function begins *******************/ /* Attempt writing data. If any error occurred, then abort. */ if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) || \ (WriteFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ data_buffer_p, \ data_size, \ (unsigned long *) (&data_size_sent), \ NULL) == FALSE) || \ (data_size_sent != data_size)) { return (RV_INVALID_PARAMETER); } return (RV_OK); } /******************* End of atp_uart_write_com_port function ******************/ /********************************************************************************/ /* */ /* Function Name: atp_uart_read_com_port */ /* */ /* Purpose: This function reads data from the COM port. */ /* */ /* Input Parameters: */ /* data_buffer_p - Pointer on the destination buffer. */ /* data_size_p - Pointer on the total byte count to be read. */ /* */ /* Output Parameters: None. */ /* data_size_p - Contains the total byte count read. */ /* */ /* Global Parameters: None. */ /* */ /* Notes: Buffer allocation is outside the scope of this */ /* function Moreover, this function returns the total */ /* byte count read, up to the expected value (from */ /* 0x00000000 to 'data_size_p'). */ /* */ /* Revision History: */ /* 02/05/01 David Lamy-Charrier */ /* - Create. */ /* */ /********************************************************************************/ T_ATP_UART_ERROR_CODES atp_uart_read_com_port (UINT8 *data_buffer_p, UINT32 *data_size_p) { /* Declare a local variable. */ UINT32 data_size_read = 0x00000000; UINT32 total_data_size_read = 0x00000000; /******************** atp_uart_read_com_port function begins ********************/ /* First, check whether the COM port is in use and whether the total byte */ /* count to be read is valid. Otherwise, abort. */ if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) || \ (data_size_p == NULL)) { return (RV_INVALID_PARAMETER); } /* Then, attempt reading data, up to the expected value. However, abort if */ /* no data available from the COM port or if any error occurred. */ do { if (ReadFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ (data_buffer_p + total_data_size_read), \ (*data_size_p - total_data_size_read), \ (unsigned long *) (&data_size_read), \ NULL) == FALSE) { return (RV_INVALID_PARAMETER); } total_data_size_read += data_size_read; } while (data_size_read != 0x00000000); /* Update the total byte count read. */ *data_size_p = total_data_size_read; return(RV_OK); } /******************* End of atp_uart_read_com_port function *******************/ /********************************************************************************/ /* */ /* Function Name: atp_uart_remove_com_port */ /* */ /* Purpose: This function removes the COM port. */ /* */ /* Input Parameters: None. */ /* */ /* Output Parameters: None. */ /* */ /* Global Parameters: None. */ /* */ /* Note: None. */ /* */ /* Revision History: */ /* 02/05/01 David Lamy-Charrier */ /* - Create. */ /* */ /********************************************************************************/ T_ATP_UART_ERROR_CODES atp_uart_remove_com_port (void) { /******************* atp_uart_remove_com_port function begins *******************/ /* Remove the COM port. If any error occurred, then abort. */ if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) || \ (DeleteFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_name) == FALSE)) { return (RV_INVALID_PARAMETER); } /* Set the default handle assigned to the COM port. */ (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle = INVALID_HANDLE_VALUE; return (RV_OK); } /****************** End of atp_uart_remove_com_port function ******************/