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view src/g23m-gprs/llc/llc_us.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_us.c 
+----------------------------------------------------------------------------- 
*/ 


#ifndef LLC_US_H
#define LLC_US_H




EXTERN void sig_llme_u_assign_req (void);

EXTERN void sig_llme_u_unassign_req (void);

EXTERN void sig_rx_u_data_ind (T_LL_UNITDATA_IND *ll_unitdata_ind, 
                               T_COMMAND command, T_BIT cr_bit, T_BIT pf_bit);

EXTERN void sig_rx_u_frmr_ind (T_LL_UNITDATA_IND *ll_unitdata_ind,
                               T_PDU_TYPE pdu_type,
                               USHORT frmr_ctrl_length,
                               T_BIT cr_bit,
                               UBYTE frmr_reason);

EXTERN void sig_t200_u_expired_ind 
(
#ifndef LL_DESC 
  T_LL_UNITDATA_REQ *ll_unitdesc_req,
#else
  T_LL_UNITDESC_REQ *ll_unitdesc_req,
#endif
  UBYTE cause,
  T_EXPIRY_MODE_TYPE mode
);

EXTERN void sig_llme_u_reest_req (void);

EXTERN void sig_irx_u_no_frame_expected_ind (void);

#endif /* !LLC_US_H */