FreeCalypso > hg > fc-magnetite
view src/cs/riviera/rv_template/xxx_i.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 xxx_i.h * * Internal definitions for XXX. * * @author Your name here (your_email_here) * @version 0.1 */ /* * History: * * Date Author Modification * ------------------------------------------------------------------- * // Create. * * (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved */ #ifndef __XXX_INST_I_H_ #define __XXX_INST_I_H_ #include "rv/rv_general.h" #include "rvf/rvf_api.h" #include "rvm/rvm_gen.h" #include "rvm/rvm_use_id_list.h" #include "rvm/rvm_ext_use_id_list.h" #include "xxx/xxx_cfg.h" #include "xxx/xxx_api.h" #include "xxx/xxx_message.h" #include "xxx/xxx_state_i.h" /** Macro used for tracing XXX messages. */ #define XXX_SEND_TRACE(string, trace_level) \ rvf_send_trace (string, (sizeof(string) - 1), NULL_PARAM, trace_level, XXX_USE_ID) /** * The Control Block buffer of XXX, which gathers all 'Global variables' * used by XXX instance. * * A structure should gathers all the 'global variables' of XXX instance. * Indeed, global variable must not be defined in order to avoid using static memory. * A T_XXX_ENV_CTRL_BLK buffer is allocated when creating XXX instance and is * then always refered by XXX instance when access to 'global variable' * is necessary. */ typedef struct { /** Store the current state of the XXX instance */ T_XXX_INTERNAL_STATE state; /** Pointer to the error function */ T_RVM_RETURN (*error_ft)(T_RVM_NAME swe_name, T_RVM_RETURN error_cause, T_RVM_ERROR_TYPE error_type, T_RVM_STRING error_msg); /** Mem bank id. */ T_RVF_MB_ID prim_mb_id; T_RVF_ADDR_ID addr_id; } T_XXX_ENV_CTRL_BLK; /** External ref "global variables" structure. */ extern T_XXX_ENV_CTRL_BLK *xxx_env_ctrl_blk_p; #endif /* __XXX_INST_I_H_ */