ardupilot/Tools/scripts/esp32_get_idf.sh

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#!/bin/bash
# if you have modules/esp_idf setup as a submodule, then leave it as a submodule and switch branches
if [ ! -d modules ]; then
echo "this script needs to be run from the root of your repo, sorry, giving up."
exit 1
fi
echo `ls modules`
cd modules
if [ ! -d esp_idf ]; then
echo 'did not find modules/esp_idf folder, making it.' ;
mkdir -p -v esp_idf
else
echo 'found modules/esp_idf folder' ;
fi
echo "looking for submodule or repo..."
if [ `git submodule | grep esp_idf | wc | cut -c1-7` == '1' ]; then
echo "found real submodule, syncing"
../Tools/gittools/submodule-sync.sh >/dev/null
else
echo "esp_idf is NOT a submodule"
if [ ! `ls esp_idf/install.sh 2>/dev/null` ]; then
echo "found empty IDF, cloning"
# add esp_idf as almost submodule, depths uses less space
#git clone -b v4.2 --single-branch --depth 10 https://github.com/espressif/esp-idf.git esp_idf
git clone -b 'release/v4.2' https://github.com/espressif/esp-idf.git esp_idf
# check if we've got v4.2 checked out, only this version of esp_idf is tested and works?
fi
fi
echo "inspecting possible IDF... "
cd esp_idf
echo `git rev-parse HEAD`
# these are a selection of possible specific commit/s that represent v4.2 branch of the esp_idf
if [ `git rev-parse HEAD` == 'f370d5089f61ac39f183109b6b2908700cfe3b0a' ]; then
echo "IDF version 'release/4.2' found OK, great.";
elif [ `git rev-parse HEAD` == 'c40f2590bf759ff60ef122afa79b4ec04e7633d2' ]; then
echo "IDF version 'v4.2' found OK, great.";
else
echo "looks like an idf, but not v4.2 branch, trying to switch branch and reflect upstream";
../../Tools/gittools/submodule-sync.sh >/dev/null
git fetch ; git checkout -f release/v4.2
# retry same as above
echo `git rev-parse HEAD`
if [ `git rev-parse HEAD` == 'f370d5089f61ac39f183109b6b2908700cfe3b0a' ]; then
echo "IDF version 'release/4.2' found OK, great.";
elif [ `git rev-parse HEAD` == 'c40f2590bf759ff60ef122afa79b4ec04e7633d2' ]; then
echo "IDF version 'v4.2' found OK, great.";
fi
fi
cd ..