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view src/g23m-aci/uart/uart_dtxs.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 53929b40109c
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 uart_dtxs.c 
+----------------------------------------------------------------------------- 
*/ 

#ifndef UART_DTXS_H
#define UART_DTXS_H


EXTERN void sig_ker_dtx_ready_mode_req (UBYTE dlc_instance);

EXTERN void sig_ker_dtx_dead_mode_req (void);

EXTERN void sig_ker_dtx_line_states_req(UBYTE st_flow,
                                        UBYTE st_line_sa,
                                        UBYTE st_line_sb,
                                        UBYTE st_break_len);

EXTERN void sig_rx_dtx_receiving_ind (void);

EXTERN void sig_rx_dtx_data_received_ind (T_desc2* received_data, 
                                          USHORT  write_pos);

EXTERN void sig_ker_dtx_set_dti_peer_req (USHORT tui_peer, 
                                          T_HANDLE peer_handle, 
                                          UBYTE c_id);

#ifdef DTILIB
EXTERN void sig_ker_dtx_set_dtilib_peer_req (void);
#ifdef DTI2
EXTERN void sig_ker_dtx_disconnected_mode_req(void);
EXTERN void sig_ker_dtx_detect_escape_req (UBYTE detect_escape); 
#endif /* DTI2 */
#endif

EXTERN void sig_ker_dtx_timeout_tesd_req (void);


#endif /* !UART_DTXS_H */