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/*
* PARALLAX.C
*
*
*
*/
#ifndef IRMINILIB
#include "dongle.h"
/*
* The programming interface to a UART (COM serial port)
* consists of eight consecutive registers.
* These are the port offsets from the UART's base I/O address.
*/
typedef enum comPortRegOffsets {
XFER_REG_OFFSET = 0,
INT_ENABLE_REG_OFFSET = 1,
INT_ID_AND_FIFO_CNTRL_REG_OFFSET = 2,
LINE_CONTROL_REG_OFFSET = 3,
MODEM_CONTROL_REG_OFFSET = 4,
LINE_STAT_REG_OFFSET = 5,
MODEM_STAT_REG_OFFSET = 6,
SCRATCH_REG_OFFSET = 7
} comPortRegOffset;
#define PARALLAX_IRDA_SPEEDS ( \
NDIS_IRDA_SPEED_2400 | \
NDIS_IRDA_SPEED_9600 | \
NDIS_IRDA_SPEED_19200 | \
NDIS_IRDA_SPEED_38400 | \
NDIS_IRDA_SPEED_57600 | \
NDIS_IRDA_SPEED_115200 \
)
BOOLEAN PARALLAX_Init(UINT comBase, dongleCapabilities *caps, UINT *context)
{
UCHAR modemCntrlVal;
IRMINI_RawReadPort(comBase+MODEM_CONTROL_REG_OFFSET, &modemCntrlVal);
modemCntrlVal |= 3;
IRMINI_RawWritePort(comBase+MODEM_CONTROL_REG_OFFSET, modemCntrlVal);
IRMINI_StallExecution(1000);
caps->supportedSpeedsMask = PARALLAX_IRDA_SPEEDS;
caps->turnAroundTime_usec = 5000;
caps->extraBOFsRequired = 0;
*context = 0;
return TRUE;
}
VOID PARALLAX_Deinit(UINT comBase, UINT context)
{
}
BOOLEAN PARALLAX_SetSpeed(UINT comBase, UINT bitsPerSec, UINT context)
{
UCHAR modemCntrlVal;
UINT numToggles;
IRMINI_RawReadPort(comBase+MODEM_CONTROL_REG_OFFSET, &modemCntrlVal);
/*
* First set the speed to 115200 baud.
*/
modemCntrlVal &= ~2;
IRMINI_RawWritePort(comBase+MODEM_CONTROL_REG_OFFSET, modemCntrlVal);
IRMINI_StallExecution(1000);
modemCntrlVal |= 2;
IRMINI_RawWritePort(comBase+MODEM_CONTROL_REG_OFFSET, modemCntrlVal);
IRMINI_StallExecution(1000);
/*
* Now, "count down" from 115.2 Kbaud.
*/
switch (bitsPerSec){
case 2400: numToggles = 6; break;
case 4800: numToggles = 5; break;
case 9600: numToggles = 4; break;
case 19200: numToggles = 3; break;
case 38400: numToggles = 2; break;
case 57600: numToggles = 1; break;
case 115200: numToggles = 0; break;
default:
/*
* Illegal speed
*/
return FALSE;
}
while (numToggles-- > 0){
modemCntrlVal &= ~1;
IRMINI_RawWritePort(comBase+MODEM_CONTROL_REG_OFFSET, modemCntrlVal);
IRMINI_StallExecution(1000);
modemCntrlVal |= 1;
IRMINI_RawWritePort(comBase+MODEM_CONTROL_REG_OFFSET, modemCntrlVal);
IRMINI_StallExecution(1000);
}
return TRUE;
}
#endif
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