213 lines
5.1 KiB
C
213 lines
5.1 KiB
C
/*****************************************************************************
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*
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* Copyright (c) 1997-1999 Microsoft Corporation
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*
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* @doc
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* @module parallax.c | IrSIR NDIS Miniport Driver
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* @comm
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*
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*-----------------------------------------------------------------------------
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*
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* Author: Stan Adermann (stana)
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*
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* Date: 10/15/1997 (created)
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*
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* Contents: Parallax PRA9500A dongle specific code for initialization,
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* deinit, and setting the baud rate of the device.
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*
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*****************************************************************************/
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#include "irsir.h"
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#include "dongle.h"
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#define PARALLAX_IRDA_SPEEDS ( \
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NDIS_IRDA_SPEED_2400 | \
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NDIS_IRDA_SPEED_9600 | \
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NDIS_IRDA_SPEED_19200 | \
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NDIS_IRDA_SPEED_38400 | \
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NDIS_IRDA_SPEED_57600 | \
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NDIS_IRDA_SPEED_115200 \
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)
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NDIS_STATUS
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PARALLAX_QueryCaps(
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OUT PDONGLE_CAPABILITIES pDongleCaps
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)
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{
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DEBUGMSG(DBG_FUNC, ("+PARALLAX_Init\n"));
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ASSERT(pDongleCaps != NULL);
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pDongleCaps->supportedSpeedsMask = PARALLAX_IRDA_SPEEDS;
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pDongleCaps->turnAroundTime_usec = 100;
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pDongleCaps->extraBOFsRequired = 0;
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DEBUGMSG(DBG_FUNC, ("-PARALLAX_Init\n"));
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return NDIS_STATUS_SUCCESS;
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}
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/*****************************************************************************
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*
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* Function: PARALLAX_Init
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*
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* Synopsis: Initialize the PARALLAX dongle.
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*
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* Arguments:
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*
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* Returns: NDIS_STATUS_SUCCESS
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* DONGLE_CAPABILITIES
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*
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* Algorithm:
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*
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* History: dd-mm-yyyy Author Comment
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* 10/2/1996 sholden author
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*
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* Notes:
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*
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*****************************************************************************/
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NDIS_STATUS
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PARALLAX_Init(
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IN PDEVICE_OBJECT pSerialDevObj
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)
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{
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DEBUGMSG(DBG_FUNC, ("+PARALLAX_Init\n"));
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(void)SerialSetDTR(pSerialDevObj);
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(void)SerialSetRTS(pSerialDevObj);
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DEBUGMSG(DBG_FUNC, ("-PARALLAX_Init\n"));
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return NDIS_STATUS_SUCCESS;
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}
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/*****************************************************************************
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*
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* Function: PARALLAX_Deinit
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*
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* Synopsis: The PARALLAX dongle doesn't require any special deinit, but for
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* purposes of being symmetrical with other dongles...
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*
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* Arguments:
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*
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* Returns:
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*
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* Algorithm:
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*
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* History: dd-mm-yyyy Author Comment
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* 10/2/1996 sholden author
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*
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* Notes:
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*
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*
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*****************************************************************************/
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VOID
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PARALLAX_Deinit(
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IN PDEVICE_OBJECT pSerialDevObj
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)
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{
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DEBUGMSG(DBG_FUNC, ("+PARALLAX_Deinit\n"));
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DEBUGMSG(DBG_FUNC, ("-PARALLAX_Deinit\n"));
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return;
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}
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/*****************************************************************************
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*
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* Function: PARALLAX_SetSpeed
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*
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* Synopsis: set the baud rate of the PARALLAX dongle
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*
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* Arguments:
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*
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* Returns: NDIS_STATUS_SUCCESS if bitsPerSec = 9600 || 19200 || 115200
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* NDIS_STATUS_FAILURE otherwise
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*
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* Algorithm:
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*
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* History: dd-mm-yyyy Author Comment
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* 10/2/1996 sholden author
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*
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* Notes:
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* The caller of this function should set the baud rate of the
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* serial driver (UART) to 9600 first to ensure that dongle
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* receives the commands.
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*
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*
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*****************************************************************************/
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NDIS_STATUS
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PARALLAX_SetSpeed(
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IN PDEVICE_OBJECT pSerialDevObj,
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IN UINT bitsPerSec,
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IN UINT currentSpeed
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)
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{
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ULONG NumToggles;
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#if DBG
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LARGE_INTEGER StartTime, EndTime;
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ULONG DbgNumToggles;
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#endif
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DEBUGMSG(DBG_FUNC, ("+PARALLAX_SetSpeed\n"));
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if (bitsPerSec==currentSpeed)
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{
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return NDIS_STATUS_SUCCESS;
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}
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//
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// We will need to 'count down' from 115.2 Kbaud.
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//
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switch (bitsPerSec){
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case 2400: NumToggles = 6; break;
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case 4800: NumToggles = 5; break;
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case 9600: NumToggles = 4; break;
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case 19200: NumToggles = 3; break;
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case 38400: NumToggles = 2; break;
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case 57600: NumToggles = 1; break;
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case 115200: NumToggles = 0; break;
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default:
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/*
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* Illegal speed
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*/
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return NDIS_STATUS_FAILURE;
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}
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//
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// Set speed to 115200, enabling set-speed mode.
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//
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NdisMSleep(1000);
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(void)SerialClrRTS(pSerialDevObj);
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NdisMSleep(1000);
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(void)SerialSetRTS(pSerialDevObj);
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NdisMSleep(1000);
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while (NumToggles--)
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{
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(void)SerialClrDTR(pSerialDevObj);
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NdisMSleep(1000);
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(void)SerialSetDTR(pSerialDevObj);
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NdisMSleep(1000);
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}
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//
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// These NdisMSleep calls actually have a granularity of about 10ms under
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// NT, even though we're asking for 1ms. Fortunately, in this case, it
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// works.
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//
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DEBUGMSG(DBG_FUNC, ("-PARALLAX_SetSpeed\n"));
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return NDIS_STATUS_SUCCESS;
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}
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