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|
#!/usr/bin/tclsh
# Part of MCU 8051 IDE ( http://http://www.moravia-microsystems.com/mcu8051ide )
############################################################################
# Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012 by Martin Ošmera #
# martin.osmera@gmail.com #
# #
# Copyright (C) 2014 by Moravia Microsystems, s.r.o. #
# martin.osmera@moravia-microsystems.com #
# #
# 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. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the #
# Free Software Foundation, Inc., #
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. #
############################################################################
# >>> File inclusion guard
if { ! [ info exists _PALE_TCL ] } {
set _PALE_TCL _
# <<< File inclusion guard
# --------------------------------------------------------------------------
# DESCRIPTION
# PALE (Peripheral Abstraction Layer Engine) - simulates virtual hardware
# --------------------------------------------------------------------------
if {$::GUI_AVAILABLE} {
# Load base class for Virtual HW components
source "${::LIB_DIRNAME}/pale/virtual_hw_component.tcl"
# Load Virtual HW components
source "${::LIB_DIRNAME}/pale/ledpanel.tcl"
source "${::LIB_DIRNAME}/pale/leddisplay.tcl"
source "${::LIB_DIRNAME}/pale/ledmatrix.tcl"
source "${::LIB_DIRNAME}/pale/multiplexedleddisplay.tcl"
source "${::LIB_DIRNAME}/pale/simplekeypad.tcl"
source "${::LIB_DIRNAME}/pale/matrixkeypad.tcl"
source "${::LIB_DIRNAME}/pale/lcd_hd44780.tcl"
source "${::LIB_DIRNAME}/pale/ds1620.tcl"
source "${::LIB_DIRNAME}/pale/virtual_uart_term.tcl"
source "${::LIB_DIRNAME}/pale/file_interface.tcl"
}
class Pale {
private variable scenario_file {} ;# String: Name of PALE scenario file
private variable portLatch {} ;# List: Nx{5x{8x{...}}} States of port latches
private variable portState {} ;# List: Nx{5x{8x{...}}} True port states
private variable portOutput {} ;# List: Nx{5x{8x{...}}} True port outputs
private variable portInput {} ;# List: 5x{8x{...}} Port inputs
private variable special_func {} ;# List: Values of alternative port functions
private variable portConfig ;# Array of Int: Index 0..4, defines port pin functions
private variable portConfig_mod 0 ;# Bool: $portConfig contain special configuration
private variable instruction_cycles 0 ;# Int: Number of instruction cycles performed during this simulation cycle
private variable last_output {} ;# List: 5x{8x{...}} Last port outputs
private variable last_input {} ;# List: 5x{8x{...}} Last port inputs
private variable last_state {} ;# List: 5x{8x{...}} Last true port states
private variable input_devices [list] ;# List of Object: Input devices (can affect true state)
private variable output_devices [list] ;# List of Object: Output devices (cannot affect true state)
private variable engaged_pins ;# Array of Lists of Objects: Output devices which uses pin specified by index (index: (port_num,pin_num))
private variable is_enabled 0 ;# Bool: PALE sysetem on-line
private variable modified 0 ;# Bool: Modified flag
## Object constructor
# Perform PALE sysetem reset
constructor {} {
pale_reset
for {set p 0} {$p < 5} {incr p} {
for {set b 0} {$b < 8} {incr b} {
set engaged_pins($p,$b) {}
}
}
}
## Object destructor
# Save PALE scenarion file and destroy all PALE VHW components
destructor {
pale_save_scenario_file
foreach dev [concat $output_devices $input_devices] {
delete object $dev
}
}
## Save PALE scenario under the specified file name
# @parm String filename - Name of the target file
# @return Bool - 1 upon success; 0 upon fail
public method pale_save_as {filename} {
set scenario_file_org $scenario_file
set scenario_file [file join [$this cget -ProjectDir] $filename]
# Adjust file extension
if {![regexp {\.vhw$} $scenario_file]} {
append scenario_file {.vhw}
}
if {[pale_save_scenario_file]} {
return 1
}
set scenario_file $scenario_file_org
return 0
}
## Save PALE scenario to a file
# If there is no predefined file name then it will call "::X::__save_as_VHW"
# @return Bool - 1 upon success; 0 upon fail
public method pale_save {} {
if {$scenario_file == {}} {
::X::__save_as_VHW
return 0
}
return [pale_save_scenario_file]
}
## Save PALE scenario to a file
# @return void
public method pale_save_scenario_file {} {
# Abort on empty file name
if {$scenario_file == {}} {
return 0
}
# Create a backup file
catch {
file rename -force $scenario_file "$scenario_file~"
}
# Try to open the file
if {[catch {
set file [open $scenario_file "w" 0640]
}]} then {
puts stderr "Unable to save to file: \"$scenario_file\""
return 0
}
# Save data to the file
puts $file "# MCU 8051 IDE: Virtual HW configuration file"
puts $file "# Project: [$this cget -projectName]\n"
foreach dev [concat $output_devices $input_devices] {
puts $file [$dev get_config]
}
# Finalize
catch {
close $file
}
set modified 0
return 1
}
## Get value of flag modified
# @return Bool - The modified flag
public method pale_modified {} {
return $modified
}
## Set flag modified
# @return Bool - Always 1
public method pale_set_modified {} {
set modified 1
return 1
}
## Get name of PALE scenarion file
# @return String - Name of the file
public method pale_get_scenario_filename {} {
# Determinate project root path
set prj_path [$this cget -projectPath]
append prj_path {/}
# Return relative directory location
if {![string first $prj_path $scenario_file]} {
return [string range $scenario_file [string length $prj_path] end]
# Return absolute directory location
} else {
return $scenario_file
}
}
## Remove all devices from the current scenarion
# @return void
public method pale_remove_all_devices {} {
foreach dev [concat $output_devices $input_devices] {
delete object $dev
}
}
## Reset pale to initial state
# @return void
public method pale_forget_all {} {
pale_remove_all_devices
set scenario_file {}
set modified 0
}
## Open the specified PALE scenarion file
# @parm String filename - Source file
# @return Int - Exit status
# 0 - Ok
# 1 - Error
# 2 - File is not usable
public method pale_open_scenario {filename} {
set filename [file join [$this cget -ProjectDir] $filename]
if {
![file exists $filename] ||
![file isfile $filename] ||
(!$::MICROSOFT_WINDOWS && ![file readable $filename])
} then {
return 0
}
pale_remove_all_devices
set scenario_file $filename
set modified 0
return [pale_load_scenarion $filename]
}
## Import the specified PALE scenarion file
# @parm String filename - Source file
# @return Int - Exit status
# 0 - Ok
# 1 - Error
# 2 - File is not usable
public method pale_load_scenarion {filename} {
# Check for file usability
if {![file exists $filename] || ![file isfile $filename] || (!$::MICROSOFT_WINDOWS && ![file readable $filename])} {
return 2
}
# Try to open the specified file
if {[catch {
set file [open $filename {r}]
}]} then {
puts stderr "Unable to open file: \"$scenario_file\", that might not be important ..."
return 1
}
# Read the file line by line
set result 0
while {![eof $file]} {
set line [gets $file]
# Skip empty lines and comments
if {$line == {} || [regexp {^\s*#} $line]} {continue}
# Decomposite file records
set obj [lindex $line 0] ;# VHW component class name
set conf [lindex $line 1] ;# VHW component configuration
# Create component object and set its configuration
if {[catch {
set obj [$obj ::#auto $this]
$obj set_config $conf
# Error detected
}]} then {
puts stderr "Unable to create PALE object: \"$obj\", maybe you are using an old version of MCU 8051 IDE.\n"
puts stderr $::errorInfo
catch {
delete object $obj
}
set result 1
}
}
# Finalize ...
catch {
close $file
}
set modified 1
return $result
}
## Reset whole PALE system
# @return void
public method pale_reset {} {
set portConfig_mod 0
array set portConfig {
0 {0 0 0 0 0 0 0 0}
1 {0 0 0 0 0 0 0 0}
2 {0 0 0 0 0 0 0 0}
3 {0 0 0 0 0 0 0 0}
4 {0 0 0 0 0 0 0 0}
}
set last_output [list \
[list 1 1 1 1 1 1 1 1] \
[list 1 1 1 1 1 1 1 1] \
[list 1 1 1 1 1 1 1 1] \
[list 1 1 1 1 1 1 1 1] \
[list 1 1 1 1 1 1 1 1] \
]
set last_input $last_output
set last_state $last_output
set portState [list $last_output]
foreach dev [concat $input_devices $output_devices] {
$dev reset
}
pale_reevaluate_IO
}
## Withdraw windows of all PALE components
# Usefull to speedup exit program procedure
# @return void
public method pale_withdraw_all_windows {} {
foreach dev [concat $output_devices $input_devices] {
$dev withdraw_window
}
}
## Inform pale about interrupt comminted by simulatoe
# @parm Int vector - Interrupt vector
# @return void
public method pale_interrupt {vector} {
$this graph_draw_interrupt_line
}
## Perform one PALE simulation cycle
# @parm List - State of 5 port latches
# @return void
public method pale_simulation_cycle args {
if {!$is_enabled} {return}
set ports [list]
foreach byte [lindex $args 0] {
set byte [NumSystem::dec2bin $byte]
set bin_len [string length $byte]
if {$bin_len < 8} {
set byte "[string repeat {0} [expr {8 - $bin_len}]]$byte"
}
lappend ports [split $byte {}]
}
lappend portLatch $ports
incr instruction_cycles
}
## Set Line Special Function (Bypass port latch)
# @parm List port_and_bit - {port_number bit_number}
# @parm Int type - Function
# 0 - Nomal operation -- port latch is outputed
# 1 - Special logical IO function (UART, triggers, external memory, etc.)
# 2 - High speed digital output (possibly a few pulses per instruction cycle)
# 3 - PWM output (it's low speed logical output)
# 4 - Analog comparator input (accepts values between 0 and 1)
# 5 - External memory
# 6 - Not implemented pin
# @return void
public method pale_SLSF {port_and_bit type} {
# Modify ports configuration
lset portConfig([lindex $port_and_bit 0]) \
[expr {7 - [lindex $port_and_bit 1]}] $type
# Adjust flag portConfig_mod
set portConfig_mod 0
for {set i 0} {$i < 5} {incr i} {
for {set j 0} {$j < 5} {incr j} {
if {[lindex $portConfig($i) $j] != 0} {
set portConfig_mod 1
return
}
}
}
}
## Read Real Port Voltage - 8 bit value (0..255)
# @parm Int port - Port number
# @return Int - Port value
public method pale_RRPV {port} {
if {!$is_enabled} {return 255}
set result_tmp [lindex $portState [list end $port]]
set result {}
foreach bit $result_tmp {
switch -- $bit {
{?} { ;# No volatge
append result [expr {rand() < 0.5}]
}
{X} { ;# Access to external memory
append result [expr {rand() < 0.5}]
}
{-} { ;# Indeterminable value (some noise)
append result [expr {rand() < 0.5}]
}
{|} { ;# High frequency
append result 1
}
{=} { ;# High forced to low
append result 0
}
default {
append result $bit
}
}
}
set result [NumSystem::bin2dec $result]
return $result
}
## Read Real Port Pin Voltage - 1 bit value (0 or 1)
# @parm List pn_bn - {port_number bit_number}
# @parm Int position=0 - Position in history (positive number)
# @return Bool - Boolean value
public method pale_RRPPV {pn_bn {position 0}} {
if {!$is_enabled} {return 1}
# Parse input arguments
set port [lindex $pn_bn 0]
set bit [lindex $pn_bn 1]
# Adjust arguments
if {$position < 0} {
set position [expr {[llength $portState] + $position}]
}
set bit [expr {7 - $bit}]
# Evaluate result
set result [lindex $portState [list $position $port $bit]]
switch -- $result {
{?} { ;# No volatge
return [expr {rand() < 0.5}]
}
{X} { ;# Access to external memory
return [expr {rand() < 0.5}]
}
{|} { ;# High frequency
return 1
}
{1} { ;# Logical 1
return 1
}
{0} { ;# Logical 0
return 0
}
{=} { ;# High forced to low
return 0
}
default {
return 1
}
}
}
## Write to port with bypassed latch (takes effect on next simulation cycle)
# @parm Int port - Port number
# @parm List value - New value -- list of 8 values {bit0 bit1 bit2 ... bit7}
# '0' - Logical 0
# '1' - Logical 1
# '|' - High frequency pulse
# 'X' - Access to external memory
# '?' - No volatge
# '-' - Indeterminable value (some noise)
# '=' - High forced to low
# @parm Int position=0 - Position in history (zero or negative number)
# @return void
public method pale_WPBL {port value {position 0}} {
if {!$is_enabled} {return}
# Set value
for {set bit 0} {$bit < 8} {incr bit} {
lappend special_func [list $port $bit $value $position]
}
}
## Write to port bit with bypassed latch
# @parm List pn_bn - {port_number bit_number}
# @parm Char value - New value
# '0' - Logical 0
# '1' - Logical 1
# '|' - High frequency pulse
# 'X' - Access to external memory
# '?' - No volatge
# '-' - Indeterminable value (some noise)
# '=' - High forced to low
# @parm Int position=0 - Position in history (zero or negative number)
# @return void
public method pale_WPBBL {pn_bn value {position 0}} {
if {!$is_enabled} {return}
# Parse input arguments
set port [lindex $pn_bn 0]
set bit [lindex $pn_bn 1]
set bit [expr {7 - $bit}]
# Set value
lappend special_func [list $port $bit $value $position]
}
## Finalize this simulation cycle
# @return void
public method pale_finish_simulation_cycle {} {
if {!$is_enabled} {return}
# ---------------------------------------------------
# DETERMINATE TRUE OUTPUT VALUES
# ---------------------------------------------------
set portOutput $portLatch
if {$portConfig_mod} {
# Adjust port outputs to contain '#' where are the
#+ bits with active alternative function
for {set port 0} {$port < 5} {incr port} {
for {set bit 0} {$bit < 8} {incr bit} {
switch -- [lindex $portConfig($port) $bit] {
0 { ;# Nomal operation -- port latch is outputed
}
1 { ;# Special logical IO function (UART, triggers, external memory, etc.)
for {set i 0} {$i < $instruction_cycles} {incr i} {
lset portOutput [list $i $port $bit] {#}
}
}
2 { ;# High speed digital output (possibly a few pulses per machine cycle)
for {set i 0} {$i < $instruction_cycles} {incr i} {
lset portOutput [list $i $port $bit] {#}
}
}
3 { ;# PWM output (it's low speed logical output)
for {set i 0} {$i < $instruction_cycles} {incr i} {
lset portOutput [list $i $port $bit] {#}
}
}
4 { ;# Analog comparator input (accepts values between 0 and 1)
for {set i 0} {$i < $instruction_cycles} {incr i} {
lset portOutput [list $i $port $bit] {?}
}
}
5 { ;# Access to external memory
for {set i 0} {$i < $instruction_cycles} {incr i} {
lset portOutput [list $i $port $bit] {X}
}
}
6 { ;# Not implemented pin
for {set i 0} {$i < $instruction_cycles} {incr i} {
lset portOutput [list $i $port $bit] {?}
}
}
}
}
}
# Adjust port outputs to contain values generated by alternaive functions
foreach spec $special_func {
set port [lindex $spec 0]
set bit [lindex $spec 1]
set value [lindex $spec 2]
set position [lindex $spec 3]
incr position $instruction_cycles
incr position -1
lset portOutput [list $position $port $bit] $value
}
# Adjust port outputs to repeat previous values on
#+ bits with active alternative function.
#+ In other words, eliminate all '#' and replace them with reasonable values
for {set i -1; set j 0} {$j < $instruction_cycles} {incr i; incr j} {
if {$i < 0} {
set previous_output_state $last_output
} else {
set previous_output_state [lindex $portOutput $i]
}
foreach prev $previous_output_state new [lindex $portOutput $j] port {0 1 2 3 4} {
if {[lsearch -ascii -exact $new {#}] != -1} {
foreach p $prev n $new bit {0 1 2 3 4 5 6 7} {
switch -- $n {
{#} { ;# Repeat last value
lset portOutput [list $j $port $bit] $p
}
}
}
}
}
}
}
# ---------------------------------------------------
# DETERMINATE TRUE STATE
# ---------------------------------------------------
# Call input devices to evaluate input values
read_port_input
# Determinate true port states using function "pale_combine_values"
#+ and graw graphs
set graw_graph [expr {![$this sim_run_in_progress]}]
set portState [list]
set state_one_p [list]
set state_all_p [list]
for {set i 0} {$i < $instruction_cycles} {incr i} {
foreach output [lindex $portOutput $i] input [lindex $portInput $i] {
foreach out $output in $input {
lappend state_one_p [pale_combine_values $in $out]
}
lappend state_all_p $state_one_p
set state_one_p [list]
}
if {$graw_graph} {
$this graph_new_output_state L [lindex $portLatch $i]
$this graph_new_output_state O [lindex $portOutput $i]
$this graph_new_output_state S $state_all_p
}
lappend portState $state_all_p
set state_all_p [list]
}
# Clean up
set instruction_cycles 0
set last_output [lindex $portOutput end]
set last_input [lindex $portInput end]
set last_state [lindex $portState end]
set portLatch [list]
set portOutput [list]
set portInput [list]
set special_func [list]
# Inform output devices about the new port outputs
foreach dev $output_devices {
$dev new_state last_state
}
update
}
## Determinate resulting value when two values clash on one wire
# @parm Char in0 - 1st wire state
# @parm Char in1 - The other wire state
# @return Char - Resulting state
public method pale_combine_values {in0 in1} {
if {$in1 == 0} {
return {0}
} elseif {$in1 == {}} {
return $in0
}
switch -- $in0 {
{|} { ;# High frequency
if {$in1 == 1 || $in1 == {|} || $in1 == {?}} {
return {|}
} else {
return {-}
}
}
{X} { ;# Access to external memory
if {$in1 == 1 || $in1 == {X} || $in1 == {?}} {
return {X}
} else {
return {-}
}
}
{?} { ;# No volatge
return $in1
}
{-} { ;# Indeterminable value (some noise)
return {-}
}
{=} { ;# High forced to low
return {=}
}
{0} { ;# Logical 0
return 0
}
{1} { ;# Logical 1
if {$in1 == {?}} {
return 1
} else {
return $in1
}
}
{} { ;# Not connected
return $in1
}
default {
error "ERROR in function pale_combine_value\npale_combine_values {{$in0} {$in1}}"
}
}
}
## Reevaluate inputs & outputs for all PALE devices and the MCU
# @return void
public method pale_reevaluate_IO {} {
# Get last output
set input $last_output
# Call all input devices
foreach dev $input_devices {
# Call device to change the current state
$dev new_state input
# Clear list of devices already confronted with the new state
set already_evaluated [list]
# Inform all other devices interconnected with this one
for {set p 0} {$p < 5} {incr p} {
for {set b 0} {$b < 8} {incr b} {
# Search for connected devices
set idx [lsearch -ascii -exact $engaged_pins($p,$b) $dev]
if {$idx == -1} {
continue
}
if {[llength $engaged_pins($p,$b)] == 1} {
continue
}
# Call all affected devices
foreach affected_dev $engaged_pins($p,$b) {
# Do not confront the device with itself
if {$affected_dev == $dev} {
continue
}
# Do not confront the device with another device more than once per ``foreach dev ...'' iteration
if {[lsearch -ascii -exact $already_evaluated $affected_dev] != -1} {
continue
}
lappend already_evaluated $affected_dev
$affected_dev new_state input
}
# Again call the current device
$dev new_state input
}
}
}
set last_input $input
# Determinate true port states using function "pale_combine_values"
set state_one_p [list]
set last_state [list]
foreach output $last_output input $last_input {
foreach out $output in $input {
lappend state_one_p [pale_combine_values $in $out]
}
lappend last_state $state_one_p
set state_one_p [list]
}
# Update more complex information about true port states
set portState [lreplace $portState end end $last_state]
# Inform output devices about the new port outputs
foreach dev $output_devices {
$dev new_state last_state
}
update
}
## Call input devices to evaluate input values
# @return void
private method read_port_input {} {
# Get last output
set input [lindex $portOutput end]
# Call all input devices
foreach dev $input_devices {
# Call device to change the current state
$dev new_state input
# Clear list of devices already confronted with the new state
set already_evaluated [list]
# Inform all other devices interconnected with this one
for {set p 0} {$p < 5} {incr p} {
for {set b 0} {$b < 8} {incr b} {
# Search for connected devices
set idx [lsearch -ascii -exact $engaged_pins($p,$b) $dev]
if {$idx == -1} {
continue
}
if {[llength $engaged_pins($p,$b)] == 1} {
continue
}
# Call all affected devices
foreach affected_dev $engaged_pins($p,$b) {
# Do not confront the device with itself
if {$affected_dev == $dev} {
continue
}
# Do not confront the device with another device more than once per ``foreach dev ...'' iteration
if {[lsearch -ascii -exact $already_evaluated $affected_dev] != -1} {
continue
}
$affected_dev new_state input
}
# Again call the current device
$dev new_state input
}
}
}
# Fill in list of port onputs
for {set i 1} {$i < $instruction_cycles} {incr i} {
lappend portInput $last_input
}
lappend portInput $input
}
## Adjust PALE to new state "ON/OFF"
# @parm Bool _is_enabled - 1 == Turn on; 0 == Turn off
# @return void
public method pale_on_off {_is_enabled} {
set is_enabled $_is_enabled
foreach dev [concat $input_devices $output_devices] {
$dev on_off $is_enabled
}
}
## Turn whole PALE system on or off
# @return void
public method pale_all_on_off {} {
$this graph_change_status_on
}
## Determinate whether PALE is on-line or not
# @return Bool - 1 == online; 0 - offline
public method pale_is_enabled {} {
return $is_enabled
}
## Inform PALE about new output device (device which CANNOT affect port inputs)
# Every output device must be registred in PALE system in
#+ this way otherwise it wont work !
# @parm Object object - PALE VHW component object reference
# @return void
#
# Note: PALE VHW component must extend class "VirtualHWComponent"
public method pale_register_output_device {object} {
lappend output_devices $object
}
## Unregister device prevously registred by "pale_register_output_device"
# @parm Object object - PALE VHW component object reference
# @return void
public method pale_unregister_output_device {object} {
set idx [lsearch -ascii -exact $output_devices $object]
if {$idx == -1} {
return
}
set output_devices [lreplace $output_devices $idx $idx]
}
## Inform PALE about new input device (device which CAN affect port inputs)
# Every input device must be registred in PALE system in
#+ this way otherwise it wont work !
# @parm Object object - PALE VHW component object reference
# @return void
#
# Note: PALE VHW component must extend class "VirtualHWComponent"
public method pale_register_input_device {object} {
lappend input_devices $object
}
## Unregister device prevously registred by "pale_register_input_device"
# @parm Object object - PALE VHW component object reference
# @return void
public method pale_unregister_input_device {object} {
# Find the specified device
set idx [lsearch -ascii -exact $input_devices $object]
if {$idx == -1} {
return
}
# Unregister the device
set input_devices [lreplace $input_devices $idx $idx]
# Disconnect the device from all other devices
for {set p 0} {$p < 5} {incr p} {
for {set b 0} {$b < 8} {incr b} {
pale_disengage_pin_by_input_device $p $b $object
}
}
# Make this change in the environment visible right away
pale_reevaluate_IO
}
## Inform PALE system about that than some input device is
#+ connected to the specified port and pin.
#
# THIS IS VERY IMPORTANT FUNCTION to achieve correct PALE
# system functionality !!!
#
# @parm Int port - Port number (0..4)
# @parm Int pin - Port bit number (0..7)
# @parm Object dev - Input device (PALE VHW component)
# @return void
#
# Notes:
# * PALE VHW component must extend class "VirtualHWComponent"
# * Input devices CAN affect port inputs, output cannot
public method pale_engage_pin_by_input_device {port pin dev} {
if {[lsearch -ascii -exact $engaged_pins($port,$pin) $dev] != -1} {
return
}
lappend engaged_pins($port,$pin) $dev
}
## Inform PALE system about that than some input device is
#+ no longer connected to the specified port and pin.
# In other words the right opposite of method
# "pale_engage_pin_by_input_device".
#
# THIS IS VERY IMPORTANT FUNCTION to achieve correct PALE
# system functionality !!!
#
# @parm Int port - Port number (0..4)
# @parm Int pin - Port bit number (0..7)
# @parm Object dev - Input device (PALE VHW component)
# @return void
#
# Notes:
# * PALE VHW component must extend class "VirtualHWComponent"
# * Input devices CAN affect port inputs, output cannot
public method pale_disengage_pin_by_input_device {port pin dev} {
set idx [lsearch -ascii -exact $engaged_pins($port,$pin) $dev]
if {$idx == -1} {
return
}
set engaged_pins($port,$pin) \
[lreplace $engaged_pins($port,$pin) $idx $idx]
}
## Determinate whether the specified port pin is engaged
# by any input device
# @parm Int port - Port number (0..4)
# @parm Int pin - Port bit number (0..7)
# @return void
#
# Note: Input devices CAN affect port inputs, output cannot
public method pale_is_engaged {port pin} {
return $engaged_pins($port,$pin)
}
## Get true port outputs (that means latches plus alternate functions)
# @return List of Char - 5 x {8 x $bit_val} -- {bit0 bit1 bit2 ... bit7}
# $bit_val can be one of the following values:
# '0' - Logical 0
# '1' - Logical 1
# '|' - High frequency pulse
# 'X' - Access to external memory
# '?' - No volatge
# '-' - Indeterminable value (some noise)
# '=' - High forced to low
public method pale_get_output_state {} {
return $last_output
}
## Get true port states
# @return List of Char - 5 x {8 x $bit_val} -- {bit0 bit1 bit2 ... bit7}
# $bit_val can be one of the following values:
# '0' - Logical 0
# '1' - Logical 1
# '|' - High frequency pulse
# 'X' - Access to external memory
# '?' - No volatge
# '-' - Indeterminable value (some noise)
# '=' - High forced to low
public method pale_get_true_state {} {
return $last_state
}
## Get list of available port number on the current MCU
# @return List of Int - e.g. {1 3}
public method pale_get_available_ports {} {
return [lindex [$this get_ports_info] 1]
}
## Inform PALE sysetem about MCU change
# @return void
public method pale_MCU_changed {} {
foreach dev [concat $input_devices $output_devices] {
$dev mcu_changed
}
}
## Get number of instruction cycles performed during this simulation cycle
# @return Int - Number of instruction cycles
public method pale_get_number_of_instruction_cycles {} {
return $instruction_cycles
}
}
# >>> File inclusion guard
}
# <<< File inclusion guard
|