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view src/g23m-gsm/alr/alr_gprs.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 27a4235405c6
children
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/*
+-----------------------------------------------------------------------------
|  Project :
|  Modul   :  J:\g23m-gsm\alr\alr_gprs.h
+-----------------------------------------------------------------------------
|  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 :
+-----------------------------------------------------------------------------
*/
typedef struct {
  UBYTE v_ptmsi;
  ULONG ptmsi;
  UBYTE v_ptmsi2;
  ULONG ptmsi2;
  UBYTE ign_pgm;
  UBYTE pbcch;
  UBYTE check_bsic;
  UBYTE ptm;
  UBYTE pim;
  UBYTE sync_only;
  UBYTE pcco_active;
} T_ALR_GPRS_DATA;

#define SI13_ON_NBCCH 0
#define SI13_ON_EBCCH 1

void gprs_alr_get_table            (const T_FUNC**      tab,
                                    USHORT*             n);
void gprs_alr_mon_ctrl_req         (T_MPH_MON_CTRL_REQ* ctrl_req);
BOOL gprs_alr_check_packet_paging  (UBYTE*              frame,
                                    UBYTE               which);
BOOL gprs_alr_check_packet_paging_2(UBYTE*              frame,
                                    UBYTE               which);
BOOL gprs_alr_check_ptmsi          (ULONG               ptmsi_pag);
void gprs_alr_store_ptmsi          (UBYTE indic,
                                    ULONG               tmsi);
void gprs_alr_store_ptmsi2         (UBYTE indic2,
                                    ULONG               tmsi2);

void gprs_alr_check_downlink_assign(T_MPHC_DATA_IND*    data_ind);
void gprs_alr_init                 (void);
BOOL gprs_check_read_si13_only     (void);
void gprs_check_page_mode          (T_MPHC_DATA_IND*    data_ind);
void set_gprs_support( UBYTE support );
GLOBAL BOOL gprs_alr_is_supported  (void);