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view src/cs/riviera/rvf/rvf_mem_pool.c @ 629:3231dd9b38c1

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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 945cf7f506b2
children
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/****************************************************************************/
/*                                                                          */
/*  Name        rvf_mem_pool.c                                              */
/*                                                                          */
/*  Function    this file contains the definition of main memory pool       */
/*                                                                          */
/*  Version		0.1															             */
/*																			                   */
/* 	Date       	Modification												          */
/*  ------------------------------------									          */
/*  06/08/02		Create														          */
/*																			                   */
/*	Author		Laurent Sollier (l-sollier@ti.com)						          */
/*																			                   */
/* (C) Copyright 2002 by Texas Instruments Incorporated, All Rights Reserved*/
/****************************************************************************/

#include "rvf/rvf_pool_size.h"
#include "rvf/rvf_cust.h"

/******** MEMORY POOLS ******************/
/* Define the buffer pools */
T_RVF_POOL _rvf_pools[RVF_NB_POOLS];


/* allocated static buffer pools */
UINT8 Buf0[RVF_POOL_0_SIZE];

#if (RVF_NB_POOLS > 1)
UINT8 Buf1[RVF_POOL_1_SIZE];
#endif

/*******************************************************************************
**
** Function         _rvf_init_mem_pool
**
** Description      This function is called to initialize the different memory
**                  pool.
**
** Returns          void
**
*******************************************************************************/
void _rvf_init_mem_pool(void)
{
	/* initialize buffer pools */
   _rvf_init_free_queue(0, RVF_POOL_0_SIZE, (UINT8 *)Buf0);

#if (RVF_NB_POOLS > 1)
   _rvf_init_free_queue(1, RVF_POOL_1_SIZE, (UINT8 *)Buf1);
#endif
}

/*******************************************************************************
**
** Function         _rvf_get_mem_usage_ratio
**
** Description      This function is called to have the value of
**                  RVF_MEM_USAGE_RATIO.
**
** Returns          The value of RVF_MEM_USAGE_RATIO (see details of this value
**                  in rvf_pool_size.h)
**
*******************************************************************************/
UINT16 _rvf_get_mem_usage_ratio(void)
{
   return RVF_MEM_USAGE_RATIO;
}

/*******************************************************************************
**
** Function         _rvf_get_number_of_pool
**
** Description      This function is called to have the number of memory pool.
**
** Returns          The number of available different pool
**
*******************************************************************************/
UINT16 _rvf_get_number_of_pool(void)
{
   return RVF_NB_POOLS;
}