FreeCalypso > hg > fc-magnetite
annotate src/gpf2/tst/idle.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 | cd37d228dae0 |
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rev | line source |
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1 /* |
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2 +------------------------------------------------------------------------------ |
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3 | File: idle.h |
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4 +------------------------------------------------------------------------------ |
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5 | Copyright Texas Instruments 2002 |
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6 | All rights reserved. |
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7 | |
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8 +------------------------------------------------------------------------------ |
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9 | Purpose: Definitions for the IDLE entity. |
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10 | $Identity:$ |
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11 +------------------------------------------------------------------------------ |
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12 */ |
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13 |
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14 #ifndef IDLE_H |
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15 #define IDLE_H |
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16 |
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17 /*==== INCLUDES ==============================================================*/ |
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18 |
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19 /*==== CONSTS ================================================================*/ |
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20 |
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21 #ifdef VSI_CALLER |
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22 #undef VSI_CALLER |
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23 #define VSI_CALLER idle_handle, |
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24 #define VSI_CALLER_SINGLE idle_handle |
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25 #endif |
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26 |
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27 #define hCommTST idle_hCommTST /* Communication handle to TST */ |
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28 |
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29 #define IDLE_REQ 0x00000010 |
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30 #define IDLE_CNF 0x00010010 |
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31 |
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32 |
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33 #ifndef __T_IDLE_CNF__ |
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34 #define __T_IDLE_CNF__ |
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35 typedef struct |
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36 { |
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37 U8 dummy; /*< 0: 1> */ |
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38 } T_IDLE_CNF; |
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39 #endif |
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40 |
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41 #ifndef __T_IDLE_REQ__ |
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42 #define __T_IDLE_REQ__ |
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43 typedef struct |
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44 { |
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45 U8 dummy; /*< 0: 1> */ |
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46 } T_IDLE_REQ; |
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47 #endif |
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48 |
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49 /*==== TYPES =================================================================*/ |
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50 |
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51 /*==== EXPORTS ===============================================================*/ |
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52 |
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53 #ifdef IDLE_PEI_C |
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54 |
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55 /* Communication handles */ |
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56 T_HANDLE idle_handle; |
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57 T_HANDLE hCommTST = VSI_ERROR; |
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58 |
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59 #else /* IDLE_PEI_C */ |
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60 |
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61 extern T_HANDLE idle_handle; |
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62 extern T_HANDLE hCommTST; |
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63 |
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64 #endif /* IDLE_PEI_C */ |
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65 |
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66 #endif /* IDLE_H */ |
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67 |
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68 /*==== END OF FILE ===========================================================*/ |