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view src/condat2/com/include/cl_ribu.h @ 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 93999a60b835
children
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/*
+-----------------------------------------------------------------------------
|  Project :  COMLIB
|  Modul   :  cl_ribu
+-----------------------------------------------------------------------------
|  Copyright 2002 Texas Instruments Berlin, AG
|                 All rights reserved.
|
|                 This file is confidential and a trade secret of Texas
|                 Instruments Berlin, AG
|                 The receipt of or possession of this file does not convey
|                 any rights to reproduce or disclose its contents or to
|                 manufacture, use, or sell anything it may describe, in
|                 whole, or in part, without the specific written consent of
|                 Texas Instruments Berlin, AG.
+-----------------------------------------------------------------------------
|  Purpose :  Definitions of global types used by common library functions
|             and the prototypes of those functions.
+-----------------------------------------------------------------------------
*/
/*
 *  Version 1.0
 */

/**********************************************************************************/

#ifndef CL_RIBU_H
#define CL_RIBU_H

/**********************************************************************************/

typedef struct
{
  U8 ri;        /* ring buffer read index */
  U8 wi;        /* ring buffer write index */
  U8 depth;     /* ring buffer depth */
  U8 filled;    /* ring buffer filled flag */
} T_RIBU;

typedef struct
{
  U8 type;
  U8 status;
  U8 len;   /* buffer length */
  U8 *buf;  /* buffer start address */
} T_FD;     /* frame descriptor */

typedef struct
{
  T_RIBU idx;
  T_FD **pFDv;  /* frame descriptor vector */
} T_RIBU_FD;

/**********************************************************************************/

EXTERN void cl_ribu_create(T_RIBU_FD **ribu, const U8 buflen, const U8 depth);
EXTERN void cl_ribu_release(T_RIBU_FD **ribu);

EXTERN void cl_ribu_put(const T_FD fd, T_RIBU_FD *ribu);
EXTERN T_FD *cl_ribu_get(T_RIBU_FD *ribu);
EXTERN T_FD *cl_ribu_get_new_frame_desc(T_RIBU_FD *ribu);

EXTERN void cl_ribu_init(T_RIBU *ribu, const U8 depth);
EXTERN U8   cl_ribu_read_index(T_RIBU *ribu);
EXTERN U8   cl_ribu_write_index(T_RIBU *ribu);
EXTERN BOOL cl_ribu_data_avail(const T_RIBU_FD *ribu);

EXTERN  void cl_set_frame_desc(T_FRAME_DESC *frame_desc, U8 *A0, U16 L0, U8 *A1, U16 L1);
EXTERN  void cl_set_frame_desc_0(T_FRAME_DESC *frame_desc, U8 *A0, U16 L0);

#endif /* CL_RIBU_H */