view src/cs/services/lls/lls_api.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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/**
 * @file   lls_api.h
 *
 * API Definition for LLS (Low Level Servies) Service.
 *
 * This file gathers all the constants, structure and functions declaration
 * useful for a LLS service user.
 *
 * @author   Laurent Sollier (l-sollier@ti.com)
 * @version 0.1
 */

/*
 * History:
 *
 *   Date          Author       Modification
 *  ----------------------------------------
 *  03/12/2002     L Sollier    Create
 *
 *
 * (C) Copyright 2002 by Texas Instruments Incorporated, All Rights Reserved
 */

#ifndef _LLS_API_H_
#define _LLS_API_H_


#include "rv/rv_general.h"

/**
 * @name External types
 *
 * Types used in API.
 *
 */
/*@{*/

/** Definition of available equipment, ... for D-Sample
 */
#define LLS_LED_A         0x01
#define LLS_BACKLIGHT     0x02
#define LLS_PRECHARGE_LED 0x03

/*@}*/

typedef UINT8 T_LLS_EQUIPMENT;

/**
 * @name API functions
 *
 * API functions declarations.
 */
/*@{*/

/**
 * function: lls_switch_on
 *
 * This function switch on an equipment.
 *
 * @param   equipment_sort    equipment sort.
 * @return
 *    - RV_OK if operation is successful,
 *    - RV_INVALID_PARAMETER if one parameter is incorrect,
 *    - RV_NOT_SUPPORTED 
 *
 */
T_RV_RET lls_switch_on(T_LLS_EQUIPMENT equipment_sort);


/**
 * function: lls_switch_off
 *
 * This function switch off an equipment.
 *
 * @param   equipment_sort    equipment sort.
 * @return
 *    - RV_OK if operation is successful,
 *    - RV_INVALID_PARAMETER if one parameter is incorrect,
 *    - RV_NOT_SUPPORTED 
 *
 */
T_RV_RET lls_switch_off(T_LLS_EQUIPMENT equipment_sort);


/*@}*/




#endif /* #ifndef _LLS_API_H_ */