FreeCalypso > hg > fc-magnetite
annotate src/g23m-gprs/llc/llc_irxs.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 |
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : |
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4 | Modul : |
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5 +----------------------------------------------------------------------------- |
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6 | Copyright 2002 Texas Instruments Berlin, AG |
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7 | All rights reserved. |
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8 | |
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9 | This file is confidential and a trade secret of Texas |
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10 | Instruments Berlin, AG |
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11 | The receipt of or possession of this file does not convey |
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12 | any rights to reproduce or disclose its contents or to |
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13 | manufacture, use, or sell anything it may describe, in |
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14 | whole, or in part, without the specific written consent of |
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15 | Texas Instruments Berlin, AG. |
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16 +----------------------------------------------------------------------------- |
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17 | Purpose : Definitions for llc_irxs.c |
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18 | Logical Link Control (LLC) |
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19 +----------------------------------------------------------------------------- |
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20 */ |
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21 |
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22 #ifndef LLC_IRXS_H |
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23 #define LLC_IRXS_H |
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24 |
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26 EXTERN void sig_llme_irx_assign_req (void); |
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28 EXTERN void sig_llme_irx_unassign_req (void); |
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30 EXTERN void sig_llme_irx_reset_req (void); |
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32 EXTERN void sig_llme_irx_abmest_req (void); |
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34 EXTERN void sig_llme_irx_abmrel_req (void); |
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36 EXTERN void sig_itx_irx_s_frame_req (T_ABIT_REQ_TYPE req); |
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38 EXTERN void sig_rx_irx_data_ind (T_LL_UNITDATA_IND *ll_unitdata_ind, |
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39 T_COMMAND command, |
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40 T_PDU_TYPE frame_type, |
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41 T_BIT cr_bit, |
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42 T_BIT a_bit, |
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43 T_FRAME_NUM ns, |
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44 T_FRAME_NUM nr); |
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45 |
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47 #endif /* !LLC_IRXS_H */ |