FreeCalypso > hg > fc-magnetite
view src/g23m-gprs/sndcp/sndcp_sdp.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 | 219afcfc6250 |
| children |
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/* +----------------------------------------------------------------------------- | Project : GPRS (8441) | Modul : sndcp_sdp.h +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : Definitions for sndcp_sdp.c +----------------------------------------------------------------------------- */ /*---- HISTORY --------------------------------------------------------------*/ #if 0 $Log:: /GPRS/Condat/MS/SRC/SNDCP/sndcp_sdp.h $ * * 16 15.05.00 16:55 Hk * T H E E N D. * * 15 15.05.00 16:16 Hk * backup. * * 14 9.05.00 18:59 Hk * XID negotiation work in progress. Backup. * * 13 18.04.00 18:47 Hk * Backup. Work on XID negotiation. * * 12 30.03.00 16:04 Hk * * 11 17.03.00 18:03 Hk * Acknowledged data transfer is now implemented and tested uplink and * downlink. * * 10 10.03.00 17:49 Hk * Backup. First downlink ack data transfer ok (case 700). * * 9 7.03.00 18:24 Hk * Backup. Last check in before adding extra downlink service for timeout and * re-ordering. * * 8 25.02.00 18:27 Hk * Backup, test case 346 runs (deactivation of ack context including ll * release. * * 7 17.02.00 14:32 Hk * Last checkin before maybe splitting sd in two services for 1.unack and 2. * ack op mode. * * 6 11.02.00 18:49 Hk * Establishment of LLC acknowledged operation mode. First test case SNDCP035 * successful. Backup. * * 5 9.02.00 15:03 Hk * Backup. Unacknowledged data transfer possible. Up to testcase SNDCP034. * * 4 7.02.00 18:02 Hk * Backup, error situations in service sd, up to testcase 028. * * 3 3.02.00 18:08 Hk * Backup, downlink transfer up to test case 016. * * 2 26.01.00 16:24 Hk * Made services sd and nd compilable. * * 1 25.01.00 17:32 Hk * Initial. #endif #ifndef SNDCP_SDP_H #define SNDCP_SDP_H #endif /* !SNDCP_SDP_H */