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view src/g23m-gprs/grr/grr_pgf.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 219afcfc6250
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  GPRS (8441)
|  Modul   :  GRR
+----------------------------------------------------------------------------- 
|  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 for service PG.
+----------------------------------------------------------------------------- 
*/ 

#ifndef GRR_PGF_H
#define GRR_PGF_H

typedef enum
{
  NULL_IDLE,
  IDLE_ACCESS,
  IDLE_PTM,
  ACCESS_IDLE,
  ACCESS_PTM,
  PTM_ACCESS,
  PTM_IDLE,
  T3172_PTM
}T_PG_TRANS;

EXTERN void pg_handle_classB_NMO_III ( T_PG_TRANS transition );

EXTERN void pg_handle_idle_mode ( T_PG_TRANS transition );

EXTERN void pg_handle_access_mode ( void );

EXTERN void pg_handle_transfer_mode ( T_PG_TRANS transition );

EXTERN void pg_init ( void );

EXTERN void pg_init_params ( void );

EXTERN void pg_process_pp_req ( T_D_PAGING_REQ *paging_req, UBYTE state );

EXTERN void pg_send_stop ( void );

EXTERN void pg_send_start ( UBYTE pg_mode );

EXTERN void pg_start_t_nc2_ndrx ( UBYTE nc_non_drx_period );

EXTERN void pg_non_drx ( void );

EXTERN void pg_handle_non_drx_timers(void);

EXTERN void pg_set_l1_ref_tn ( UBYTE* out_tn, UBYTE in_tn );

#endif /* !GRR_PGF_H */