FreeCalypso > hg > fc-magnetite
view src/cs/layer1/gtt_include/l1gtt_defty.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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/************* Revision Controle System Header ************* * GSM Layer 1 software * L1GTT_DEFTY.H * * Filename l1gtt_defty.h * Copyright 2003 (C) Texas Instruments * ************* Revision Controle System Header *************/ #ifndef _L1GTT_DEFTY_H_ #define _L1GTT_DEFTY_H_ #if (L1_GTT == 1) // GTT L1A/L1S COM structure //--------------------------- typedef struct { BOOL start; BOOL stop; } T_GTT_COMMAND; typedef struct { UWORD8 scen_enable; UWORD16 rate; } T_GTT_TEST; typedef struct { T_GTT_TEST test; T_GTT_COMMAND command; } T_GTT_TASK; // FIFO structure //---------------- #if (CODE_VERSION == SIMULATION) // DSP address do not exist --> 32-bit addresses typedef struct { API *ptr_read; //API pointer to current data to read API *ptr_write; //API pointer to free area to write to API *buffer_start; //pointer to start UWORD16 buffer_length; //length of buffer } T_TTY_FIFO_struct; #else typedef struct { API ptr_read; //API pointer to current data to read API ptr_write; //API pointer to free area to write to API buffer_start; //pointer to start API buffer_length; //length of buffer } T_TTY_FIFO_struct; #endif // GTT test data //-------------- typedef struct { UWORD16 scen_index; UWORD16 scen_length; char *scen_ptr; UWORD8 chars_to_push; UWORD16 frame_count; } T_GTT_TEST_L1S; #endif #endif //_L1GTT_DEFTY_H_