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view src/cs/services/atp/atp_uart_env.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 945cf7f506b2
children
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/********************************************************************************/
/*                                                                              */
/*    File Name:         atp_uart_env.h                                         */
/*                                                                              */
/*    Purpose:           This header file contains the prototypes used to:      */
/*                          - get some information about the ATP-UART           */
/*                            interface, such as its name or the memory         */
/*                            requirements,                                     */
/*                          - set the memory bank identifier dedicated to the   */
/*                            ATP-UART interface,                               */
/*                          - initialize the ATP-UART interface,                */
/*                          - activate the ATP-UART interface,                  */
/*                          - prepare the termination of the ATP-UART           */
/*                            interface,                                        */
/*                          - kill the ATP-UART interface.                      */
/*                                                                              */
/*    Note:              None.                                                  */
/*                                                                              */
/*    Revision History:                                                         */
/*       10/04/01        Pascal Pompei                                          */
/*                          - Create.                                           */
/*                                                                              */
/* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved.   */
/*                                                                              */
/********************************************************************************/
#ifndef _ATP_UART_ENV_
#define _ATP_UART_ENV_

#include "atp/atp_pool_size.h"	/* Stack & Memory Bank sizes definitions */

/****************************** MEMORY REQUIREMENTS *****************************/
/*                                                                              */
/* Define the memory requirements of the ATP-UART interface.                    */
#define ATP_UART_MB_PRIM_SIZE          ATP_UART_MB1_SIZE
#define ATP_UART_MB_PRIM_WATERMARK     (ATP_UART_MB_PRIM_SIZE - 256)


/*************************** LOCAL FUNCTION PROTOTYPES **************************/
/*                                                                              */
/* Define the local fonction prototypes.                                        */
T_RVM_RETURN atp_uart_get_info (T_RVM_INFO_SWE  *info_software_entity_p);

T_RVM_RETURN atp_uart_set_info (T_RVF_ADDR_ID  addr_id,
								T_RV_RETURN    return_path_p[],
								T_RVF_MB_ID    *mb_id_p,
								T_RVM_CB_FUNC  error_function_p);

T_RVM_RETURN atp_uart_init (void);

T_RVM_RETURN atp_uart_core (void);

T_RVM_RETURN atp_uart_stop (void);

T_RVM_RETURN atp_uart_kill (void);
#endif