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run-in-simulavr.sh: add support for timing measurements. 

The idea is simple: if you want to time a portion of code
precisely, turn on the Debug LED (see config.h for
DEBUG_LED_PIN) at the start of sequence and turn it off when
done. Running this in SimulAVR, you have two flanges precise
to the clock cycle which exactly reflect the time taken to
run this code sequence. Ideally, you run this code n a loop
to get a number of samples, if it doesn't run in a loop anyways.

Time taken can then be measured in GTKWave. For convenience and
for a better overview, run-in-simulavr.sh also extracts all the
delays into it's own signal, so it can be viewed as an ongoing
number.
This commit is contained in:
Markus Hitter 2014-06-15 17:02:27 +02:00
parent 4389e670bd
commit da08c35edd
1 changed files with 25 additions and 1 deletions
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26
testcases/run-in-simulavr.sh
View File

@ -26,6 +26,7 @@ fi
# #define X_STEP_PIN DIO29
# #define Y_DIR_PIN DIO26
# #define Y_STEP_PIN DIO27
# #define DEBUG_LED_PIN DIO21
echo "# X Dir" > /tmp/tracein.txt
echo "+ PORTA.A3-Out" >> /tmp/tracein.txt
echo "# X Step" >> /tmp/tracein.txt
@ -34,7 +35,9 @@ echo "# Y Dir" >> /tmp/tracein.txt
echo "+ PORTA.A5-Out" >> /tmp/tracein.txt
echo "# Y Step" >> /tmp/tracein.txt
echo "+ PORTA.A4-Out" >> /tmp/tracein.txt
echo "Assuming pin configuration for a Gen7-v1.4."
echo "# DEBUG LED" >> /tmp/tracein.txt
echo "+ PORTC.C5-Out" >> /tmp/tracein.txt
echo "Assuming pin configuration for a Gen7-v1.4 + debug LED on DIO21."
STEPS_PER_M_X=$(grep STEPS_PER_M_X ../config.h | \
grep -v ^// | awk '{ print $3; }')
@ -119,6 +122,7 @@ for GCODE_FILE in $*; do
lastyTime = time;
}
}
# No usage for the LED pin signal ($2 == "4") so far.
}
' < "${VCD_FILE}" > "${DATA_FILE}"
@ -166,10 +170,12 @@ EOF
intLen = 16;
xStepID = "0"; xPosID = "1"; xUmID = "2"; xVelID = "3"; xMmmID = "4";
yStepID = "5"; yPosID = "6"; yUmID = "7"; yVelID = "8"; yMmmID = "9";
ledID = "10"; ledTimeID = "11";
xDir = yDir = 0;
xPos = yPos = 0;
lastxTime = lastyTime = 0;
ledOnTime = 0;
}
/^#/ {
time = substr($0, 2);
@ -224,6 +230,17 @@ EOF
print time " b" bit " " yStepID;
}
}
if ($2 == "4") { # LED signal
if (bit == 1) { # raising flange
print time " b" bit " " ledID;
ledOnTime = time;
} else { # falling flange
print time " b" bit " " ledID;
if (ledOnTime != 0) { # ignore pin initialisation
print ledOnTime " b" print_binary(time - ledOnTime, 32) " " ledTimeID;
}
}
}
}
' < "${VCD_FILE}" | \
sort -g | \
@ -233,6 +250,7 @@ EOF
intLen = 16;
xStepID = "0"; xPosID = "1"; xUmID = "2"; xVelID = "3"; xMmmID = "4";
yStepID = "5"; yPosID = "6"; yUmID = "7"; yVelID = "8"; yMmmID = "9";
ledID = "10"; ledTimeID = "11";
lastTime = "";
@ -249,6 +267,10 @@ EOF
print "$var integer " intLen " " yVelID " Y_steps/s $end";
print "$var integer " intLen " " yMmmID " Y_mm/min $end";
print "$upscope $end";
print "$scope module Timings $end";
print "$var wire 1 " ledID " Debug_LED $end";
print "$var integer " 32 " " ledTimeID " LED_on_time $end";
print "$upscope $end";
print "$enddefinitions $end";
print "#0";
print "$dumpvars";
@ -262,6 +284,8 @@ EOF
print "bz " yUmID;
print "bz " yVelID;
print "bz " yMmmID;
print "bz " ledID;
print "bz " ledTimeID;
print "$end";
}
{