Altera Quartus II Scripting Bedienungsanleitung PDF herunterladen (Seite 286)

100

101

3–156 Chapter 3: Tcl Packages & Commands

jtag

# number of sample performed.

# FEED instruction supplies a 8-bit value to the logic connected to this

# instance.

# Both data registers corresponding to the IR are 8 bit wide.

# Send SAMPLE instruction to IR, read captured IR for the sampling

# number.

# Capture the DR register for the current sampled value.

device_lock -timeout 10000

puts "Current LED Value (sample #[device_virtual_ir_shift -instance_index \

0 -ir_value 1]): \

[device_virtual_dr_shift -instance_index 0 -length 8 -value_in_hex]"

device_unlock

# Send FEED instruction to IR, read a two-digit hex string from the

# console,

# then send the new value to the DR register.

puts "\nType in 2 digits in hexadecimal to update the LED:"

gets stdin update_value

device_lock -timeout 10000

device_virtual_ir_shift -instance_index 0 -ir_value 2 \

-no_captured_ir_value

device_virtual_dr_shift -instance_index 0 -length 8 -dr_value \

$update_value -value_in_hex -no_captured_dr_value

device_unlock

# Close device

close_device

1 2 ... 281 282 283 284 285 286 287 288 289 290 291 ... 633 634

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