esp-idf/examples/storage/parttool/parttool_example.sh

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#!/usr/bin/env bash
#
# Demonstrates command-line interface of Partition Tool, parttool.py
#
#
# $1 - serial port where target device to operate on is connnected to, by default the first found valid serial port
# $2 - path to this example's built binary file (parttool.bin), by default $PWD/build/parttool.bin
PORT=$1
PARTTOOL_PY="python $IDF_PATH/components/partition_table/parttool.py -q"
if [[ "$PORT" != "" ]]; then
PARTTOOL_PY="$PARTTOOL_PY --port $PORT"
fi
GEN_EMPTY_PARTITION_PY="python $IDF_PATH/components/partition_table/gen_empty_partition.py"
BINARY=$2
if [[ "$BINARY" == "" ]]; then
BINARY=build/parttool.bin
fi
function assert_file_same()
{
sz_a=$(stat -c %s $1)
sz_b=$(stat -c %s $2)
sz=$((sz_a < sz_b ? sz_a : sz_b))
res=$(cmp -s -n $sz $1 $2) ||
(echo "!!!!!!!!!!!!!!!!!!!"
echo "FAILURE: $3"
echo "!!!!!!!!!!!!!!!!!!!")
}
# Read app partition and save the contents to a file. The app partition is identified
# using type-subtype combination
echo "Checking if device app binary matches built binary"
$PARTTOOL_PY read_partition --partition-type=app --partition-subtype=factory --output=app.bin
assert_file_same app.bin $BINARY "Device app binary does not match built binary"
# Retrieve info on data storage partition, this time identifying it by name.
offset=$($PARTTOOL_PY get_partition_info --partition-name=storage --info offset)
size=$($PARTTOOL_PY get_partition_info --partition-name=storage --info size)
echo "Found data partition at offset $offset with size $size"
# Create a file whose contents will be written to the storage partition
head -c $(($size)) /dev/urandom > write.bin
# Write the contents of the created file to storage partition
echo "Writing to data partition"
$PARTTOOL_PY write_partition --partition-name=storage --input write.bin
# Read back the contents of the storage partition
echo "Reading data partition"
$PARTTOOL_PY read_partition --partition-name=storage --output read.bin
assert_file_same write.bin read.bin "Read contents of storage partition does not match source file contents"
# Erase contents of the storage partition
echo "Erasing data partition"
$PARTTOOL_PY erase_partition --partition-name=storage
# Read back the erased data partition
echo "Reading data partition"
$PARTTOOL_PY read_partition --partition-name=storage --output read.bin
# Generate a file of all 0xFF
$GEN_EMPTY_PARTITION_PY $(($size)) blank.bin
assert_file_same read.bin blank.bin "Contents of storage partition not fully erased"
# Example end and cleanup
printf "\nPartition tool operations performed successfully\n"
rm -rf app.bin read.bin blank.bin write.bin