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view src/cs/services/tty/tty_api.h @ 680:ee3ac8c617cb

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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>
date Thu, 25 Jun 2020 03:17:43 +0000
parents 945cf7f506b2
children
line wrap: on
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/**
 * @file	tty_api.h
 *
 * API Definition for TTY SWE.
 *
 * @author	Frederic Turgis (f-turgis@ti.com) & Gerard Cauvy (g-cauvy@ti.com)
 * @version 0.1
 */

/*
 * History:
 *
 * 	Date       	Modification
 *  ------------------------------------
 *  01/27/2003	Create
 *
 * (C) Copyright 2003 by Texas Instruments Incorporated, All Rights Reserved
 */

#ifndef __TTY_API_H_
#define __TTY_API_H_

#include "rvm/rvm_gen.h"		/* Generic RVM types and functions. */

/* TTY entity (Background Task) is highly linked to the Audio entity. */
#include "audio/audio_api.h"

#ifdef __cplusplus
extern "C"
{
#endif

typedef struct
{
  UINT8  Mode;
  UINT16 ThresholdRead;
  UINT16 ThreshHoldWrite;
}
T_AUDIO_TTY_CONFIG_PARAMETER;

#define TTY_STOP      (0)
#define TTY_EXT_START (1)

T_AUDIO_RET audio_tty_set_config (T_AUDIO_TTY_CONFIG_PARAMETER *parameter,
                                  T_RV_RETURN *return_path);

#define AUDIO_TTY_STATUS_MSG (0x00F2 | AUDIO_EVENT_EXTERN | AUDIO_EVENTS_MASK)

typedef struct
{
  T_RV_HDR  os_hdr;
  INT8      status;
}
T_AUDIO_TTY_STATUS;

#ifdef __cplusplus
}
#endif


#endif /*__TTY_API_H_*/