FreeCalypso > hg > fc-magnetite
annotate cdg3/sap-inline/DIO_inline.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 | c15047b3d00d |
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rev | line source |
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1 /*** |
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2 ;******************************************************************************** |
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3 ;*** File : DIO_inline.h |
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4 ;*** Creation : Wed Mar 11 09:57:46 CST 2009 |
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5 ;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1 |
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6 ;*** Copyright : (c) Texas Instruments AG, Berlin Germany 2002 |
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7 ;******************************************************************************** |
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8 ;*** Document Type : Service Access Point Specification |
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9 ;*** Document Name : DIO |
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10 ;*** Document No. : ... |
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11 ;*** Document Date : 2004-03-19 |
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12 ;*** Document Status: BEING_PROCESSED |
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13 ;*** Document Author: RM |
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14 ;******************************************************************************** |
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15 ;*** !!! THIS INCLUDE FILE WAS GENERATED AUTOMATICALLY, DO NOT MODIFY !!! |
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16 ;******************************************************************************** |
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17 ***/ |
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18 #ifndef _DIO_INLINE_H_ |
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19 #define _DIO_INLINE_H_ |
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21 #include "gdi.h" |
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24 extern U16 dio_init ( void ); |
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26 extern U16 dio_user_init ( U32 user_name, U16 drv_handle, T_DRV_CB_FUNC signal_callback ); |
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28 extern U16 dio_user_exit ( U32 user_name ); |
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30 extern void dio_exit ( void ); |
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32 extern U16 dio_set_rx_buffer ( U32 device, T_dio_buffer *buffer ); |
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34 extern U16 dio_read ( U32 device, T_DIO_CTRL *control_info, T_dio_buffer **buffer ); |
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36 extern U16 dio_write ( U32 device, T_DIO_CTRL *control_info, T_dio_buffer *buffer ); |
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38 extern U16 dio_get_tx_buffer ( U32 device, T_dio_buffer **buffer ); |
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40 extern U16 dio_clear ( U32 device ); |
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41 |
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42 extern U16 dio_flush ( U32 device ); |
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44 extern U16 dio_get_capabilities ( U32 device, T_DIO_CAP **capabilities ); |
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45 |
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46 extern U16 dio_set_config ( U32 device, T_DIO_DCB *dcb ); |
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48 extern U16 dio_get_config ( U32 device, T_DIO_DCB *dcb ); |
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50 extern U16 dio_close_device ( U32 device ); |
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55 #endif /* !_DIO_INLINE_H_ */ |