view src/cs/services/mks/mks_env.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 945cf7f506b2
children
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/**
 * @file   mks_env.c
 *
 * Coding of the Riviera Generic Functions 
 *
 * @author   Laurent Sollier (l-sollier@ti.com)
 * @version 0.1
 */

/*
 * History:
 *
 *   Date          Author       Modification
 *  ----------------------------------------
 *  11/16/2001     L Sollier    Create
 *
 *
 * (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved
 */

#include "mks/mks_env.h"
#include "mks/mks_i.h"

#include "rvm/rvm_use_id_list.h"
#include "rvm/rvm_priorities.h"

#include <string.h>


/* External declaration */
extern T_RV_RET mks_core(void);

/**
 * Pointer on the structure gathering all the global variables
 * used by MKS instance.
 */
T_MKS_ENV_CTRL_BLK* mks_env_ctrl_blk = NULL;


/**
 * @name Riviera generic functions implementation
 *
 */
/*@{*/

/**
 * function: mks_get_info
 */
T_RVM_RETURN mks_get_info(T_RVM_INFO_SWE* swe_info)
{
   /* SWE info */
   swe_info->swe_type = RVM_SWE_TYPE_4;
   swe_info->type_info.type4.swe_use_id = MKS_USE_ID;

   memcpy( swe_info->type_info.type4.swe_name, "MKS", sizeof("MKS") );

   swe_info->type_info.type4.stack_size = MKS_STACK_SIZE;
   swe_info->type_info.type4.priority   = RVM_MKS_TASK_PRIORITY;


   /* Set the return path */
   swe_info->type_info.type4.return_path.callback_func   = NULL;
   swe_info->type_info.type4.return_path.addr_id         = 0;


   /* memory bank info */
   swe_info->type_info.type4.nb_mem_bank = 1;

   memcpy ((UINT8 *)    swe_info->type_info.type4.mem_bank[0].bank_name, "MKS_PRIM", 9);
   swe_info->type_info.type4.mem_bank[0].initial_params.size          = MKS_MB_PRIM_SIZE;
   swe_info->type_info.type4.mem_bank[0].initial_params.watermark     = MKS_MB_PRIM_WATERMARK;

   /* Linked SWE info */
   swe_info->type_info.type4.linked_swe_id[0] = KPD_USE_ID;
   swe_info->type_info.type4.nb_linked_swe = 1;

   /* generic functions */
   swe_info->type_info.type4.set_info = mks_set_info;
   swe_info->type_info.type4.init     = mks_init;
   swe_info->type_info.type4.core     = mks_core;
   swe_info->type_info.type4.stop     = mks_stop;
   swe_info->type_info.type4.kill     = mks_kill;

   return RVM_OK;
}


/**
 * function: mks_set_info
 */
T_RVM_RETURN mks_set_info (T_RVF_ADDR_ID   addr_id, 
                           T_RV_RETURN      return_path[], 
                           T_RVF_MB_ID      bk_id[],
                           T_RVM_RETURN   (*rvm_error_ft)(T_RVM_NAME       swe_name,
                                                          T_RVM_RETURN     error_cause,
                                                          T_RVM_ERROR_TYPE error_type,
                                                          T_RVM_STRING     error_msg))
{
   /* Create instance gathering all the variable used by MKS instance */
   if (rvf_get_buf(bk_id[0], 
                  sizeof(T_MKS_ENV_CTRL_BLK),
                  (T_RVF_BUFFER**)&mks_env_ctrl_blk) != RVF_GREEN)
   {
      /* The environemnt will cancel the MKS instance creation. */
      return RVM_MEMORY_ERR;
   }

   /* Store the pointer to the error function */
   mks_env_ctrl_blk->error_ft = rvm_error_ft ;
   /* Store the mem bank id. */
   mks_env_ctrl_blk->prim_id = bk_id[0];
   /* Store the address id */
   mks_env_ctrl_blk->addr_id = addr_id;

   /* return_path of linked SWE -> not used */
   return RVM_OK;
}


/**
 * function: mks_init
 */
T_RVM_RETURN mks_init(void)
{
   return RV_OK;
}


/**
 * function: mks_stop
 */
T_RVM_RETURN mks_stop(void)
{
   /* Stop MKS SWE */
   mks_stop_swe();

   return RVM_OK;
}


/**
 * function: mks_kill
 */
T_RVM_RETURN mks_kill (void)
{
   /*
    * DO NOT SEND MESSAGES
    */

   rvf_free_buf(mks_env_ctrl_blk);

   return RVM_OK;
}


/*@}*/