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view src/g23m-fad/ppp/ppp_lcpf.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 90eb61ecd093
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   :  
+----------------------------------------------------------------------------- 
|  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 ppp_lcpf.c 
+----------------------------------------------------------------------------- 
*/ 

#ifndef PPP_LCPF_H
#define PPP_LCPF_H


EXTERN void lcp_init (void);

EXTERN void lcp_get_values (UBYTE*  ptr_ap, 
                            USHORT* ptr_mru, 
                            ULONG*  ptr_accm, 
                            UBYTE*  ptr_pfc, 
                            UBYTE* ptr_acfc);

EXTERN void lcp_fill_out_packet (UBYTE pco_buf[], USHORT* ptr_pos);

EXTERN void lcp_get_scr (T_desc2** ptr_packet);

EXTERN void lcp_get_str (T_desc2** ptr_packet);

EXTERN void lcp_rcr (T_desc2** ptr_packet, UBYTE* isnew, UBYTE* forward);

EXTERN void lcp_rca (T_desc2* packet, UBYTE* forward);

EXTERN void lcp_rcn (T_desc2** ptr_packet, UBYTE* forward);

EXTERN void lcp_rcj (T_desc2** ptr_packet, UBYTE* forward);

EXTERN void lcp_rtr (T_desc2** ptr_packet, UBYTE* forward);

EXTERN void lcp_rta (T_desc2* packet, UBYTE* forward);

EXTERN void lcp_rxj (T_desc2** ptr_packet, UBYTE* forward);

EXTERN void lcp_rpj (T_desc2* packet, UBYTE* forward);

EXTERN void lcp_rer (T_desc2** ptr_packet, UBYTE* forward);

EXTERN void lcp_rep_rdr (T_desc2* packet, UBYTE* forward);

EXTERN void lcp_ruc (T_desc2** ptr_packet, UBYTE* forward);

#endif /* !PPP_LCPF_H */