FreeCalypso > hg > fc-magnetite
annotate src/cs/services/tty/tty_env.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> |
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date | Thu, 02 Jan 2020 05:38:26 +0000 |
parents | 945cf7f506b2 |
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rev | line source |
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1 /** |
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2 * @file tty_env.h |
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3 * |
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4 * Declarations of the Riviera Generic Functions |
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5 * |
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6 * @author Frederic Turgis (f-turgis@ti.com) & Gerard Cauvy (g-cauvy@ti.com) |
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7 * @version 0.1 |
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8 */ |
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9 |
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10 /* |
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11 * History: |
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12 * |
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13 * Date Modification |
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14 * ------------------------------------ |
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15 * 01/27/2003 Create |
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16 * |
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17 * (C) Copyright 2003 by Texas Instruments Incorporated, All Rights Reserved |
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18 */ |
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19 |
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20 #ifndef __TTY_ENV_H_ |
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21 #define __TTY_ENV_H_ |
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22 |
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23 |
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24 #include "rvm/rvm_gen.h" /* Generic RVM types and functions. */ |
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25 //#include "rvf/rvf_pool_size.h" /* Stack & Memory Bank sizes definitions */ |
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26 #include "tty/tty_pool_size.h" /* Stack & Memory Bank sizes definitions */ |
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27 |
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28 |
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29 /** |
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30 * @name Mem bank |
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31 * |
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32 * Memory bank size and watermark. |
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33 */ |
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34 /*@{*/ |
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35 #define TTY_MB_PRIM_SIZE TTY_MB1_SIZE |
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36 #define TTY_MB_PRIM_WATERMARK (TTY_MB_PRIM_SIZE - 256) |
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37 /*@}*/ |
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38 |
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39 |
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40 /** |
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41 * @name Generic functions |
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42 * |
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43 * Generic functions declarations needed for a type 2 SWE |
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44 * (Group Member SWE). |
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45 */ |
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46 /*@{*/ |
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47 T_RVM_RETURN tty_get_info (T_RVM_INFO_SWE *info_swe); |
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48 |
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49 T_RVM_RETURN tty_set_info ( T_RVF_G_ADDR_ID addr_id, |
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50 T_RV_RETURN_PATH return_path[], |
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51 T_RVF_MB_ID bk_id_table[], |
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52 T_RVM_CB_FUNC call_back_error_ft); |
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53 |
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54 T_RVM_RETURN tty_init (void); |
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55 |
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56 T_RVM_RETURN tty_stop (void); |
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57 |
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58 T_RVM_RETURN tty_kill (void); |
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59 /*@}*/ |
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61 #endif /*__TTY_ENV_H_*/ |
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62 |