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poor-mans-profiler: Add documentation

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Now sets the GDB serial device to the path of a DroneCode Probe by
default, with option command-line option override.

A few usage instructions added to the top of the file.
This commit is contained in:
JacobCrabill
2021-04-23 21:16:02 -07:00
committed by Beat Küng
parent 6e9e503ee6
commit cc81c7d49e
1 changed files with 19 additions and 4 deletions
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23
platforms/nuttx/Debug/poor-mans-profiler.sh
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@@ -16,6 +16,13 @@
# https://launchpad.net/gcc-arm-embedded and building them with correct flags. # https://launchpad.net/gcc-arm-embedded and building them with correct flags.
# Note that Python support is not required if no per-task sampling is needed. # Note that Python support is not required if no per-task sampling is needed.
# #
# Usage with PX4:
# 0) See above regarding flamegraph.pl
# 1) Connect your device, e.g. Pixhawk 4
# 2) Build PX4: make px4_fmu-v5_default
# 3) Flash PX4: make px4_fmu-v5_default upload
# 4) Connect a JTAG/SWD debugger, e.g. a DroneCode Probe
# 5) Profile: make px4_fmu-v5_default profile
set -e set -e
root=$(dirname $0) root=$(dirname $0)
@@ -33,7 +40,11 @@ function usage()
exit 1 exit 1
} }
which flamegraph.pl > /dev/null || die "Install flamegraph.pl first" if [ -z `which flamegraph.pl` ]; then
echo "Install flamegraph.pl first. Available from:"
echo -e "\thttps://github.com/brendangregg/FlameGraph"
exit 1
fi
# #
# Parsing the arguments. Read this section for usage info. # Parsing the arguments. Read this section for usage info.
@@ -45,6 +56,7 @@ elf=
append=0 append=0
fgfontsize=10 fgfontsize=10
fgwidth=1900 fgwidth=1900
gdbdev=`ls /dev/serial/by-id/*Black_Magic_Probe*-if00`
for i in "$@" for i in "$@"
do do
@@ -70,6 +82,9 @@ do
--fgwidth=*) --fgwidth=*)
fgwidth="${i#*=}" fgwidth="${i#*=}"
;; ;;
--gdbdev=*)
gdbdev="${i#*=}"
;;
*) *)
usage usage
;; ;;
@@ -104,7 +119,7 @@ then
then then
arm-none-eabi-gdb $elf --nx --quiet --batch \ arm-none-eabi-gdb $elf --nx --quiet --batch \
-ex "set print asm-demangle on" \ -ex "set print asm-demangle on" \
-ex "target extended /dev/ttyACM0" \ -ex "target extended $gdbdev" \
-ex "monitor swdp_scan" \ -ex "monitor swdp_scan" \
-ex "attach 1" \ -ex "attach 1" \
-ex bt \ -ex bt \
@@ -114,7 +129,7 @@ then
else else
arm-none-eabi-gdb $elf --nx --quiet --batch \ arm-none-eabi-gdb $elf --nx --quiet --batch \
-ex "set print asm-demangle on" \ -ex "set print asm-demangle on" \
-ex "target extended /dev/ttyACM0" \ -ex "target extended $gdbdev" \
-ex "monitor swdp_scan" \ -ex "monitor swdp_scan" \
-ex "attach 1" \ -ex "attach 1" \
-ex "source $root/Nuttx.py" \ -ex "source $root/Nuttx.py" \
@@ -137,7 +152,7 @@ fi
# #
# Folding the stacks. # Folding the stacks.
# #
[ -f $stacksfile ] || die "Where are the stack samples?" [ -f $stacksfile ] || die "Where are the stack samples? Expected file not found: $stacksfile"
cat << 'EOF' > /tmp/pmpn-folder.py cat << 'EOF' > /tmp/pmpn-folder.py
# #