view src/cs/layer1/gtt_include/ctm/conv_encoder.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
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/*
*******************************************************************************
*
*      COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH
*
*      The program(s) may be used and/or copied only with the
*      written permission from Ericsson or in accordance
*      with the terms and conditions stipulated in the agreement or
*      contract under which the program(s) have been supplied.
*
*******************************************************************************
*
*      File             : conv_encoder.h
*      Purpose          : Header file for conv_encoder.c
*      Author           : Francisco Javier Gil Gomez
*
*******************************************************************************
*
*      Changes since October 13, 2000:
*      - added reset function conv_encoder_reset()
*
*******************************************************************************
* $Id: $ 
*
*/

      
#ifndef conv_encoder_h
#define conv_encoder_h "$Id: $"

#include "conv_poly.h"    /* definition of encoder_t */

/***********************************************************************/
/* conv_encoder_init()                                                 */
/* *******************                                                 */
/* Initialization of the convolutional encoder.                        */
/*                                                                     */
/* output variables:                                                   */
/* *ptr_state    Initialized state variable of the encoder             */
/***********************************************************************/

void conv_encoder_init(conv_encoder_t* ptr_state);

void conv_encoder_reset(conv_encoder_t* ptr_state);

/***********************************************************************/
/* conv_encoder_exec()                                                 */
/* *******************                                                 */
/* Execution of the convolutional encoder                              */
/*                                                                     */
/* input variables:                                                    */
/* in                   Vector with net bits                           */
/* inbits               Number of valid net bits in vector in.         */
/*                                                                     */
/* output variables:                                                   */
/* out                  Vector with the encoded gross bits. The gross  */
/*                      bits are either 0 or 1. The vector out must    */
/*                      have at least CHC_RATE*inbits elements.        */
/*                                                                     */
/* input/output variables:                                             */
/* *ptr_state           State variable of the encoder                  */
/*                                                                     */
/***********************************************************************/

void conv_encoder_exec(conv_encoder_t* ptr_state, 
                       WORD16* in,
                       WORD16  inbits, 
                       WORD16* out);

#endif