FreeCalypso > hg > fc-magnetite
view cdg-hybrid/fflags.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 | e7a67accfad9 |
children |
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/* * This version of fflags.h (ccdgen config file) is a FreeCalypso concoction. * Here I set all feature flags to OFF in order to create a configuration * that mimics the TCS211 program. */ #undef FF_PS_RSSI #undef SIM_PERS #undef FF_PHONE_LOCK #undef TI_PS_FF_AT_CMD_P_ECC #undef TI_PS_FF_REL99_AND_ABOVE #undef TI_DUAL_MODE #undef REL99 #undef FF_BHO #undef TI_PS_FF_EMR #undef TI_PS_FF_RTD #undef FF_EGPRS #undef REL4 #undef TI_PS_FF_TBF_EST_PACCH #undef TI_PS_FF_QUAD_BAND_SUPPORT