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view src/cs/drivers/drv_app/rtc/rtc_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:   rtc_env.h                                                 */
/*                                                                          */
/*   Purpose:   This file contains prototypes for RV Environment related    */
/*            functions used to get info, start and stop the rtc block.     */
/*                                                                          */
/*  Version      0.1                                                        */
/*                                                                          */
/*    Date          Modification                                            */
/*  ------------------------------------                                    */
/*  03/20/1   Create                                                        */
/*                                                                          */
/*   Author      Laurent Sollier                                            */
/*                                                                          */
/* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved*/
/****************************************************************************/
#ifndef __RTC_ENV_H_
#define __RTC_ENV_H_


#include "rvm/rvm_gen.h"

#include "rtc/rtc_pool_size.h"	/* Stack & Memory Bank sizes definitions */


/* memory bank size and watermark */   
#define RTC_MB_PRIM_SIZE            RTC_MB1_SIZE
#define RTC_MB_PRIM_WATERMARK       (RTC_MB_PRIM_SIZE - 20)

/* generic functions declarations */
T_RVM_RETURN rtc_get_info (T_RVM_INFO_SWE  *infoSWE);

T_RVM_RETURN rtc_set_info(T_RVF_ADDR_ID   addrId,
                          T_RV_RETURN      return_path[],
                          T_RVF_MB_ID      mbId[],
                          T_RVM_RETURN   (*callBackFct) (   T_RVM_NAME SWEntName,
                                                            T_RVM_RETURN errorCause,
                                                            T_RVM_ERROR_TYPE errorType,
                                                            T_RVM_STRING errorMsg) );

T_RVM_RETURN rtc_init (void);

T_RVM_RETURN rtc_stop (void);

T_RVM_RETURN rtc_kill (void);


#endif /*__RTC_ENV_H_*/