FreeCalypso > hg > fc-magnetite
view src/cs/riviera/tests/rv/rv_test_demo.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 rv_test_demo.h * * Definitions used for demonstration tests. * * @author Cedric Baudelet * @author Vincent Oberle */ /* * History: * * Date Author Modification * ------------------------------------------------------------------- * 09/29/00 Cedric Baudelet Create. * 03/15/02 Vincent Oberle Passed all remaining macros into function. * Comment and formating cleaning. * * (C) Copyright 2002 by Texas Instruments Incorporated, All Rights Reserved */ #ifndef _RV_TEST_DEMO_H_ #define _RV_TEST_DEMO_H_ #include "tests/rv/rv_test.h" #ifdef __cplusplus extern "C" { #endif /* * DO NOT MODIFY THIS FILE! * Add your test in the corresponding .c file only. */ /** Demo test number type */ typedef T_RV_TEST_NBR T_RV_DEMO_TEST_NBR; /** Demo test return value type */ typedef T_RV_TEST_RET T_RV_DEMO_RET; #ifdef __cplusplus } #endif #endif /* _RV_TEST_DEMO_H_ */