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view src/g23m-gprs/sndcp/sndcp_nds.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   :  sndcp_nds.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 :  Definitions for sndcp_nds.c 
+----------------------------------------------------------------------------- 
*/ 

#ifndef SNDCP_NDS_H
#define SNDCP_NDS_H

EXTERN void sig_mg_nd_recover (UBYTE nsapi);

EXTERN void sig_mg_nd_reset_ind (UBYTE nsapi);

#ifdef SNDCP_UPM_INCLUDED
EXTERN U8 sig_mg_nd_get_rec_no(UBYTE nsapi);
#else
EXTERN void sig_mg_nd_get_rec_no(UBYTE nsapi);
#endif

EXTERN void sig_mg_nd_resume (UBYTE nsapi);

EXTERN void sig_mg_nd_suspend (UBYTE nsapi);

EXTERN void sig_sd_nd_unitdata_ind (UBYTE nsapi,
                                    T_SN_UNITDATA_IND* sn_unitdata_ind);

EXTERN void sig_sda_nd_data_ind (UBYTE nsapi,
                                 T_SN_DATA_IND* sn_data_ind,
                                 UBYTE npdu_number);

EXTERN void sndcp_reset_nd_nsapi_npdu_num (UBYTE nsapi); 

#endif /* !SNDCP_NDS_H */