view src/cs/layer1/gtt_include/l1gtt_defty.h @ 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 945cf7f506b2
children
line wrap: on
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/************* Revision Controle System Header *************
 *                  GSM Layer 1 software
 * L1GTT_DEFTY.H
 *
 *        Filename l1gtt_defty.h
 *  Copyright 2003 (C) Texas Instruments  
 *
 ************* Revision Controle System Header *************/

#ifndef _L1GTT_DEFTY_H_
#define _L1GTT_DEFTY_H_

#if (L1_GTT == 1)

  // GTT L1A/L1S COM structure
  //---------------------------

  typedef struct
  {
    BOOL  start;
    BOOL  stop;
  }
  T_GTT_COMMAND;

  typedef struct
  {
    UWORD8  scen_enable;
    UWORD16 rate;
  }
  T_GTT_TEST;

  typedef struct
  {
    T_GTT_TEST    test;
    T_GTT_COMMAND command;
  }
  T_GTT_TASK;

  // FIFO structure
  //----------------

    #if (CODE_VERSION == SIMULATION)

      // DSP address do not exist --> 32-bit addresses
      typedef struct
      {
        API *ptr_read;         //API pointer to current data to read
        API *ptr_write;        //API pointer to free area to write to
        API *buffer_start;     //pointer to start
        UWORD16 buffer_length;    //length of buffer
      }
      T_TTY_FIFO_struct;

    #else

      typedef struct
      {
        API ptr_read;         //API pointer to current data to read
        API ptr_write;        //API pointer to free area to write to
        API buffer_start;     //pointer to start
        API buffer_length;    //length of buffer
      }
      T_TTY_FIFO_struct;

    #endif

  // GTT test data
  //--------------

  typedef struct
  {
    UWORD16 scen_index;
    UWORD16 scen_length;
    char   *scen_ptr;
    UWORD8  chars_to_push;
    UWORD16 frame_count;
  }
  T_GTT_TEST_L1S;

#endif 


#endif //_L1GTT_DEFTY_H_