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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 838eeafb0051
children
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/********************************************************************************/
/*                                                                              */
/*    File Name:   audio_bgd_macro_i.h                                          */
/*                                                                              */
/*    Purpose:     This header contains the generic structures and constants    */
/*                 that are used by the AUDIO BACKGROUND layer.                 */
/*                                                                              */
/*  Version   1                                                                 */
/*                                                                              */
/*  Date          Modification                                                  */
/*  ------------------------------------                                        */
/*  19 June 2003  Creation                                                      */
/*                                                                              */
/*  Author      Frederic Turgis                                                 */
/*                                                                              */
/* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved.   */
/*                                                                              */
/********************************************************************************/

#include "rv/rv_defined_swe.h"

#ifdef RVM_AUDIO_BGD_SWE

  #ifndef _AUDIO_BGD_MACRO_I_H
  #define _AUDIO_BGD_MACRO_I_H

  #include "rv/rv_trace.h"
  #include "rvf/rvf_api.h"
  #include "rvm/rvm_use_id_list.h"

  #ifdef __cplusplus
    extern "C"
    {
  #endif

  /*
  ** AUDIO trace macros
  */
  #define AUDIO_BGD_SEND_TRACE(string,type) rvf_send_trace (string,(sizeof(string)-1),NULL_PARAM,type,AUDIO_BGD_USE_ID)
  #define AUDIO_BGD_SEND_TRACE_PARAM(string,param,type) rvf_send_trace (string,(sizeof(string)-1),(UINT32)param,type,AUDIO_BGD_USE_ID)
  #define AUDIO_BGD_TRACE_WARNING(string) rvf_send_trace (string,(sizeof(string)-1),NULL_PARAM,RV_TRACE_LEVEL_WARNING,AUDIO_BGD_USE_ID)

  #ifdef __cplusplus
    }
  #endif

  #endif // #ifndef _AUDIO_BGD_MACRO_I_H

#endif // #ifdef RVM_AUDIO_BGD_SWE