view src/g23m-fad/ppp/ppp_prxf.c @ 629:3231dd9b38c1

armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively, and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code for C-Sample and earlier turns them into GPIOs configured as outputs also driving 1 - so far, so good - but TI's code for BOARD 41 (which covers D-Sample, Leonardo and all real world Calypso devices derived from the latter) switches them from MCUEN to GPIOs, but then leaves them as inputs. Given that the hardware powerup state of these two pins is outputs driving 1, every Calypso board design MUST be compatible with such driving; typically these GPIO signals will be either unused and unconnected or connected as outputs driving some peripheral. Turning these pins into GPIO inputs will result in floating inputs on every reasonably-wired board, thus I am convinced that this configuration is nothing but a bug on the part of whoever wrote this code at TI. This floating input bug had already been fixed earlier for GTA modem and FCDEV3B targets; the present change makes the fix unconditional for all "classic" targets. The newly affected targets are D-Sample, Leonardo, Tango and GTM900.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 02 Jan 2020 05:38:26 +0000
parents 90eb61ecd093
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   :  
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  This modul is part of the entity PPP and implements all 
|             procedures and functions as described in the 
|             SDL-documentation (PRX-statemachine)
+----------------------------------------------------------------------------- 
*/ 

#define ENTITY_PPP

/*==== INCLUDES =============================================================*/

#include "typedefs.h"   /* to get Condat data types */
#include "vsi.h"        /* to get a lot of macros */
#include "macdef.h"     /* to get a lot of macros */
#include "custom.h"     /* to get a lot of macros */
/*lint -efile(766,gsm.h) */
#include "gsm.h"        /* to get a lot of macros */
/*lint -efile(766,cnf_ppp.h) */
#include "cnf_ppp.h"    /* to get cnf-definitions */
/*lint -efile(766,mon_ppp.h) */
#include "mon_ppp.h"    /* to get mon-definitions */
#include "prim.h"       /* to get the definitions of used SAP and directions */
#include "dti.h"        /* to get the DTILIB definitions */
#include "ppp.h"        /* to get the global entity definitions */

#ifdef FF_STATUS_TE
#include "gdi.h"        /* To include driver type-defines */
#include "ste.h"        /* To include function interface for TE status driver */
#include "ppp_prxf.h"   /* To include call-back function for TE status driver */
#endif /* FF_STATUS_TE */
/*==== CONST ================================================================*/

/*==== LOCAL VARS ===========================================================*/

/*==== PRIVATE FUNCTIONS ====================================================*/

/*==== PUBLIC FUNCTIONS =====================================================*/



/*
+------------------------------------------------------------------------------
| Function    : prx_init
+------------------------------------------------------------------------------
| Description : The function prx_init() initializes Packet Receive (PRX)
|
| Parameters  : no parameters
|
+------------------------------------------------------------------------------
*/
GLOBAL void prx_init ()
{ 
  TRACE_FUNCTION( "prx_init" );
  
#if defined FF_STATUS_TE
  /*
   * Init of the TE status driver - the handle is unique inside PPP only, SMN
   * PPP handle-management are placed in the end of ppp.h 
   */
  if (DRV_OK NEQ STE_Init( STE_HANDLE, cb_status_TE ))
  {
    /*
     * Error during init of TE status driver - either it is already init or it has failed 
     */
    TRACE_ERROR( "STE driver init. error" );
  }
  else
  {

#ifdef _SIMULATION_
    TRACE_EVENT( "Return DRV_OK from STE_Init()" );
#endif /* _SIMULATION_ */

    /*
     * Setup of used signal-types for driver to trig a callback
     */
    if (DRV_OK NEQ STE_SetSignal( DRV_SIGTYPE_READ ))
    {
      /* 
       * Error during signal-set - either signal illegal, not available or internal fail 
       */
      TRACE_ERROR( "STE driver setup error" );
    }
#ifdef _SIMULATION_
    else
    {
      TRACE_EVENT( "Return DRV_OK from STE_SetSignal()" );
    }
#endif /* _SIMULATION_ */
  }
  /*
   * initialize variables
   */
  ppp_data->prx.TE_data_buffer_desc_list_first = NULL;
  ppp_data->prx.TE_data_buffer_p_id            = DTI_PID_UOS;
  ppp_data->prx.TE_data_buffered               = FALSE;
#endif /* FF_STATUS_TE */

   INIT_STATE( PPP_SERVICE_PRX , PRX_DEAD );
} /* prx_init() */



#ifdef FF_STATUS_TE
/*
+------------------------------------------------------------------------------
| Function    : cb_status_TE
+------------------------------------------------------------------------------
| Description : Handles the call-back from the TE status driver and sends the
|               NEW_POWER_STATUS signal to the PS
|
| Parameters  : None
|
+------------------------------------------------------------------------------
*/
GLOBAL void cb_status_TE (T_DRV_SIGNAL * signal)
{ 

  TRACE_FUNCTION( "cb_status_TE" );

  if((signal->SignalType EQ DRV_SIGTYPE_READ) &&
     (signal->DrvHandle  EQ STE_HANDLE) &&
     (*((USHORT*)signal->UserData)  EQ STE_IDENTIFIER_POWER))
  {
    PSIGNAL(hCommPPP, NEW_POWER_STATUS, NULL);
  }
  else
  {
    TRACE_ERROR( "STE driver: Signal not supported" );
  }
} /* cb_status_TE() */
#endif /* FF_STATUS_TE */