view src/cs/riviera/rvt/rvt_env.h @ 629:3231dd9b38c1

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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/*******************************************************************************
 *
 * rvt_env.c
 *
 * This module interfaces the environment and contains all start/init/stop...
 * functions of the trace module.
 *
 * (C) Texas Instruments, all rights reserved
 *
 * Version number	: 0.1
 *
 * History			: 0.1 (7/4/2000) - Created
 *
 * Date             : 7/4/2000
 *
 * Author           : Cristian Livadiotti, c-livadiotti@ti.com
 *
 ******************************************************************************/

#ifndef __RVT_ENV_H__
#define __RVT_ENV_H__

#include "rvm/rvm_gen.h"


typedef enum { RVT_NOT_STARTED,	RVT_STARTED	} T_RVT_STATE;

extern T_RVF_MB_ID		rvt_mb_id;

extern T_RVT_STATE		rvt_module_state;

T_RVM_RETURN
rvt_get_info (T_RVM_INFO_SWE *p_info_swe);

T_RVM_RETURN
rvt_set_info (T_RVF_ADDR_ID		addr_id,
			  T_RV_RETURN_PATH	return_path[],
			  T_RVF_MB_ID		bk_id[],
			  T_RVM_CB_FUNC		rvm_error_ft);

T_RVM_RETURN
rvt_init (void);

T_RVM_RETURN
rvt_task_core (void);

T_RVM_RETURN
rvt_stop (void);

T_RVM_RETURN
rvt_kill (void);


#endif /* __RVT_ENV_H__ */