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/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
Copyright (c) 2000-2001 Palm, Inc. or its subsidiaries.
All rights reserved.
This file is part of the Palm OS Emulator.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
\* ===================================================================== */
#include "EmCommon.h"
#include "EmRegsEZVisor.h"
#include "EmRegsEZPrv.h"
#include "EmDevice.h" // HardwareID
#include "EmSession.h" // GetDevice
#include "EmSPISlaveADS784x.h" // EmSPISlaveADS784x
const uint16 kVisorButtonMap[kNumButtonRows][kNumButtonCols] =
{
{ keyBitHard1, keyBitHard2, keyBitHard3 },
{ keyBitPageUp, keyBitPageDown, 0 },
{ keyBitPower, keyBitHard4, 0 }
};
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::EmRegsEZVisor
// ---------------------------------------------------------------------------
EmRegsEZVisor::EmRegsEZVisor (void) :
EmRegsEZ (),
fSPISlaveADC (new EmSPISlaveADS784x (kChannelSet2))
{
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::~EmRegsEZVisor
// ---------------------------------------------------------------------------
EmRegsEZVisor::~EmRegsEZVisor (void)
{
delete fSPISlaveADC;
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::GetLCDScreenOn
// ---------------------------------------------------------------------------
Bool EmRegsEZVisor::GetLCDScreenOn (void)
{
return (READ_REGISTER (portCData) & hwrLegoPortCLCDEnableOn) != 0;
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::GetLCDBacklightOn
// ---------------------------------------------------------------------------
Bool EmRegsEZVisor::GetLCDBacklightOn (void)
{
return (READ_REGISTER (portGData) & hwrLegoPortGBacklightOff) == 0;
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::GetLineDriverState
// ---------------------------------------------------------------------------
// Return whether or not the line drivers for the given object are open or
// closed.
Bool EmRegsEZVisor::GetLineDriverState (EmUARTDeviceType type)
{
if (type == kUARTSerial)
{
uint16 uControl = READ_REGISTER (uControl);
uint16 uMisc = READ_REGISTER (uMisc);
return (uControl & hwrEZ328UControlUARTEnable) != 0 &&
(uMisc & hwrEZ328UMiscIRDAEn) == 0;
}
if (type == kUARTIR)
{
uint16 uControl = READ_REGISTER (uControl);
uint16 uMisc = READ_REGISTER (uMisc);
return (uControl & hwrEZ328UControlUARTEnable) != 0 &&
(uMisc & hwrEZ328UMiscIRDAEn) != 0;
}
return false;
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::GetPortInputValue
// ---------------------------------------------------------------------------
// Return the GPIO values for the pins on the port. These values are used
// if the select pins are high.
uint8 EmRegsEZVisor::GetPortInputValue (int port)
{
uint8 result = EmRegsEZ::GetPortInputValue (port);
if (port == 'E')
{
/*
Support the Visor model ID. From Bob Petersen at Handspring:
The Visor ROM only works with 1 device so far. But, the Visor does have
model detect pins so that future ROMs can work on multiple platforms. The
model input pins are connected to port E, bits 0-2 (E[0-2]). To read them,
you have to drive port G bit 2 low and enable the pullups on port E.
*/
#define modelOutPin 0x04 // EMUIRQ (IRQ7)
#define modelInPins 0x07 // SPI pins on Visor
UInt8 portGData = READ_REGISTER (portGData);
UInt8 portGDir = READ_REGISTER (portGDir);
UInt8 portGSelect = READ_REGISTER (portGSelect);
if (((portGData & modelOutPin) == 0) &&
((portGDir & modelOutPin) == modelOutPin) &&
((portGSelect & modelOutPin) == modelOutPin))
{
EmAssert (gSession);
EmDevice device = gSession->GetDevice ();
result |= (~device.HardwareID ()) & modelInPins; // <chg 24-Apr-2000 BP> expects inverse output
}
else
{
// The pin for detecting "in cradle" is hwrLegoPortEDock2Off. It should be low
// if in the serial cradle. If it is high, we assume USB.
// -- Bob Petersen
result &= ~hwrLegoPortEDock2Off;
}
}
else if (port == 'G')
{
// Make sure that hwrLegoPortGPowerFailIrqOff is set. If it's clear,
// the battery code will make the device go to sleep immediately.
result |= hwrLegoPortGPowerFailIrqOff;
}
return result;
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::GetPortInternalValue
// ---------------------------------------------------------------------------
// Return the dedicated values for the pins on the port. These values are
// used if the select pins are low.
uint8 EmRegsEZVisor::GetPortInternalValue (int port)
{
uint8 result = EmRegsEZ::GetPortInternalValue (port);
if (port == 'D')
{
// Always set the high bit, indicating that there's no memory module
// installed. From Bob Petersen at Handspring:
//
// This is a probe into the module memory, to check for a replacement ROM on a
// card that is plugged in. The card is mapped to 0x20000000 and the card's
// ROM is at 0x28000000. If it finds the card header (FEEDBEEF) and the card
// is plugged in that has a non-zero reset vector, the chip selects are changed
// so B0 addresses 10c00000, and then we jump to the reset vector and boot off
// the card.
//
// This part of the boot code should only be called if it is detected that a
// card is currently plugged in (bit 7 of port D) and we aren't currently
// booting from the card.
result |= hwrLegoPortDCardInstIrqOff;
// Ensure that bit hwrLegoPortDDock1IrqOff is set. If it's clear, HotSync
// will sync via the modem instead of the serial port.
result |= hwrLegoPortDDock1IrqOff;
}
else if (port == 'G')
{
// Make sure that hwrLegoPortGPowerFailIrqOff is set. If it's clear,
// the battery code will make the device go to sleep immediately.
result |= hwrLegoPortGPowerFailIrqOff;
}
return result;
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::GetKeyInfo
// ---------------------------------------------------------------------------
void EmRegsEZVisor::GetKeyInfo (int* numRows, int* numCols,
uint16* keyMap, Bool* rows)
{
*numRows = kNumButtonRows;
*numCols = kNumButtonCols;
memcpy (keyMap, kVisorButtonMap, sizeof (kVisorButtonMap));
// Determine what row is being asked for.
UInt8 portDDir = READ_REGISTER (portDDir);
UInt8 portDData = READ_REGISTER (portDData);
UInt8 portGDir = READ_REGISTER (portGDir);
UInt8 portGData = READ_REGISTER (portGData);
rows[0] = (portGDir & hwrLegoPortGKbdRow0) != 0 && (portGData & hwrLegoPortGKbdRow0) == 0;
rows[1] = (portGDir & hwrLegoPortGKbdRow1) != 0 && (portGData & hwrLegoPortGKbdRow1) == 0;
rows[2] = (portDDir & hwrLegoPortDKbdRow2) != 0 && (portDData & hwrLegoPortDKbdRow2) == 0;
}
// ---------------------------------------------------------------------------
// ¥ EmRegsEZVisor::GetSPISlave
// ---------------------------------------------------------------------------
EmSPISlave* EmRegsEZVisor::GetSPISlave (void)
{
if ((READ_REGISTER (portGData) & hwrLegoPortGAdcCsOff) == 0)
{
return fSPISlaveADC;
}
return NULL;
}
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