FreeCalypso > hg > fc-magnetite
view src/g23m-aci/gdd_dio/gdd_dio_kerf.c @ 680:ee3ac8c617cb
armio.c: set GPIO2 output high initially
On TI-canonical platforms GPIO2 is DCD modem control output. In TI's
original code the AI_InitIOConfig() function called from Init_Target()
would configure GPIO2 as an output and set the initial output value to
low, but then the init code in uartfax.c called from Init_Serial_Flows()
would immediately change it to high, corresponding to DCD not asserted.
The result is a momentary asserted-state glitch on the DCD output.
The present change eliminates this glitch, setting DCD output to
not-asserted initially like it should be.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 25 Jun 2020 03:17:43 +0000 |
parents | 53929b40109c |
children |
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/* +----------------------------------------------------------------------------- | File : gdd_dio_kerf.c +----------------------------------------------------------------------------- | 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 : This modul is part of the entity gdd_dio and implements the | kernel service functions. +----------------------------------------------------------------------------- */ #define ENTITY_GDD_DIO /*==== INCLUDES =============================================================*/ #include "typedefs.h" /* to get Condat data types */ #include "vsi.h" /* to get a lot of macros */ #include "prim.h" /* to get the definitions of used SAP and directions */ #include "dti.h" #include "gdd_dio.h" /* to get the global entity definitions */ /*==== CONST ================================================================*/ /*==== LOCAL VARS ===========================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ /*==== PUBLIC FUNCTIONS =====================================================*/ /* +------------------------------------------------------------------------------ | Function : ker_init +------------------------------------------------------------------------------ | Description : The function ker_init() initializes the state of the | kernel service. The state of DIO is initialized independently | when dio_init_bat() is called. +------------------------------------------------------------------------------ */ GLOBAL int gdd_dio_ker_init () { TRACE_FUNCTION( "ker_init" ); /* Nothing to do currently. The state of each kernel (gdd_dio_data_base[<instance>].ker.state is static and automatically set to GDD_DIO_KER_DEAD on start-up. */ return 1; } /* ker_init() */