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view src/g23m-gprs/llc/llc_irxf.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 :  
|  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 llc_irxf.c
+----------------------------------------------------------------------------- 
*/ 

#ifndef LLC_IRXF_H
#define LLC_IRXF_H


EXTERN void irx_init            (void);
EXTERN void irx_init_sapi       (void);
EXTERN void irx_init_abm        (void);

EXTERN void irx_queue_store     (T_LL_UNITDATA_IND *ll_unitdata_ind,  
                                 T_FRAME_NUM       ns,
                                 BOOL              *is_busy);
EXTERN void irx_queue_retrieve  (T_LL_UNITDATA_IND **ll_unitdata_ind, BOOL* found);
EXTERN void irx_queue_clean     (void);
EXTERN void irx_get_last_queued_ns (BOOL *found, T_FRAME_NUM *num);

EXTERN void irx_update_vr       (void);
EXTERN void irx_ack_all_to      (T_FRAME_NUM n);
EXTERN void irx_handle_sack     (T_FRAME_NUM nr, T_LL_UNITDATA_IND*, T_PDU_TYPE);
EXTERN void irx_send_ack        (T_BIT a_bit);
EXTERN void irx_send_rnr        (void);

EXTERN void irx_build_sack_bitmap (T_SACK_BITMAP *bitmap);

#endif /* !LLC_IRXF_H */