FreeCalypso > hg > fc-magnetite
annotate src/cs/riviera/rvt/rvt_env_i.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 * |
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3 * rvt_env_i.h |
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4 * |
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5 * This file should be included by rvt_env.c ONLY!!! |
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6 * It includes definitions of global variables used for trace. |
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7 * |
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8 * (C) Texas Instruments, all rights reserved |
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9 * |
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10 * Version number : 0.11 |
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11 * |
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12 * History : 0.1 (7/4/2000) - Created |
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13 * : 0.11 (6/13/2002) - Remove useless dependency. |
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14 * |
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15 * Date : 6/13/2002 |
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16 * |
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17 * Author : Cristian Livadiotti, c-livadiotti@ti.com |
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18 * |
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19 ******************************************************************************/ |
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20 |
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21 #ifndef __RVT_ENV_I_H__ |
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22 #define __RVT_ENV_I_H__ |
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23 |
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24 |
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25 /* |
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26 ** Environment global variables |
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27 */ |
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28 extern T_RVF_MB_ID rvt_mb_id; |
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29 extern T_RVF_ADDR_ID rvt_addr_id; |
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30 |
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31 |
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32 /* |
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33 ** Trace Module State |
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34 */ |
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35 extern T_RVT_STATE rvt_module_state; |
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36 |
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37 extern char *p_rvt_lost_msg; |
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38 extern char *p_rvt_sys_time; |
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39 extern T_RVT_USER_DB rvt_user_db []; |
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40 extern T_RVT_USER_ID rv_trace_user_id; |
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41 |
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42 #define RVT_LOST_MSG ("RVT: Lost Message ") |
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43 #define RVT_LOST_MSG_LENGTH (sizeof (RVT_LOST_MSG) - 1) |
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44 |
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45 #define RVT_SYS_TIME ("RVT: System Time ") |
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46 #define RVT_SYS_TIME_LENGTH (sizeof (RVT_SYS_TIME) - 1) |
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47 |
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48 #define RVT_HEX_VALUE_LENGTH (sizeof ("00000000") - 1) |
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49 |
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50 #ifndef FRAMING_PROTOCOL |
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51 #define RVT_HYPERTERM_LENGTH (sizeof ('\n') + sizeof ('\r')) |
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52 #else |
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53 #define RVT_HDR_LENGTH (6) |
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54 #endif |
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55 |
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56 #endif |