view src/g23m-fad/t30/t30_muxs.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   :  J:\g23m-fad\t30\t30_muxs.c
+-----------------------------------------------------------------------------
|  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 defines the functions for processing
|             of incomming signals for the component T30
|             of the mobile station
+-----------------------------------------------------------------------------
*/

#ifndef T30_MUXS_C
#define T30_MUXS_C
#endif

#define ENTITY_T30

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

#include <string.h>
#include <stdlib.h>
#include <stddef.h>
#include "typedefs.h"
#include "pcm.h"
#include "vsi.h"
#include "macdef.h"
#include "pconst.cdg"
#include "mconst.cdg"
#include "message.h"
#include "ccdapi.h"
#include "custom.h"
#include "gsm.h"
#include "prim.h"
#include "cnf_t30.h"
#include "mon_t30.h"
#include "pei.h"
#include "tok.h"
#include "dti.h"      /* functionality of the dti library */
#include "t30.h"

/*==== CONST =======================================================*/

/*==== TYPES =======================================================*/

/*==== VAR EXPORT ==================================================*/

/*==== VAR LOCAL ===================================================*/

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

/*
+--------------------------------------------------------------------+
| PROJECT : GSM-F&D (8411)             MODULE  : T30_MUXS            |
| STATE   : code                       ROUTINE : sig_bcs_mux_bcs_req |
+--------------------------------------------------------------------+

  PURPOSE : Process signal BCS_REQ received from process BCS formatter.
            The signal requests to send BCS data to FAD.
*/

GLOBAL void sig_bcs_mux_bcs_req (T_FAD_DATA_REQ *fad_data_req)
{
  TRACE_FUNCTION ("sig_bcs_mux_bcs_req()");
  PACCESS        (fad_data_req);

  switch (GET_STATE (MUX))
  {
    case T30_MUX_BCS:
#ifdef KER_DEBUG_BCS
      ker_debug ("fad_data_req", fad_data_req->sdu.buf, (USHORT)(fad_data_req->sdu.l_buf >> 3));
#endif
      PSENDX (FAD, fad_data_req);
      break;

    default:
      PFREE (fad_data_req);
      break;
  }
}

/*
+--------------------------------------------------------------------+
| PROJECT : GSM-F&D (8411)             MODULE  : T30_MUXS            |
| STATE   : code                       ROUTINE : sig_ker_mux_mux_req |
+--------------------------------------------------------------------+

  PURPOSE : Process signal MUX_REQ received from process kernel.
            The signal switches the state of the multiplexer.
*/

GLOBAL void sig_ker_mux_mux_req (void)
{
  TRACE_FUNCTION ("sig_ker_mux_mux_req()");

  switch (GET_STATE (MUX))
  {
  case T30_MUX_OFF:
  case T30_MUX_BCS:
  case T30_MUX_MSG:
  {
    switch (t30_data->mux.mode)
    {
    case MUX_OFF:  SET_STATE (MUX, T30_MUX_OFF);  break;
    case MUX_BCS:  SET_STATE (MUX, T30_MUX_BCS);  break;
    case MUX_MSG:  SET_STATE (MUX, T30_MUX_MSG);  break;
    }
    break;
  }
  default:
    break;
  }
}

/*
+--------------------------------------------------------------------+
| PROJECT : GSM-F&D (8411)             MODULE  : T30_MUXS            |
| STATE   : code                       ROUTINE : sig_msg_mux_msg_req |
+--------------------------------------------------------------------+

  PURPOSE : Process signal MSG_REQ received from process msg-formatter.
            The signal requests to send msg-data to fad.
*/

GLOBAL void sig_msg_mux_msg_req (T_FAD_DATA_REQ *fad_data_req)
{
  TRACE_FUNCTION ("sig_msg_mux_msg_req()");
  PACCESS        (fad_data_req);

  switch (GET_STATE (MUX))
  {
    case T30_MUX_MSG:
    {
#ifdef KER_DEBUG_MSG
      ker_debug ("fad_data_req", fad_data_req->sdu.buf, (USHORT)(fad_data_req->sdu.l_buf >> 3));
#endif
      PSENDX (FAD, fad_data_req);
      t30_data->fad_data_req = NULL;
      break;
    }

    default:
    {
      PFREE (fad_data_req);
      break;
    }
  }
}