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Set linker parameter in CMakeLists file to allow building using idf.py #14

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Set linker parameter in CMakeLists file to allow building using idf.py #14

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9c5c7e9
Adding linker muldefs flag to CMakeLists.txt to make idf.py work inst…
risinek Jan 16, 2021
a66c357
Update README to use idf.py tool again while building/flashing
risinek Feb 25, 2021
8dfec28
Update README to explain how does this workaround work
risinek Feb 25, 2021
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7 changes: 5 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -3,15 +3,18 @@
(Maybe) Port of https://github.com/spacehuhn/esp8266_deauther to the ESP32,
based on the `esp_wifi_80211_tx` function described in https://github.com/Jeija/esp32-80211-tx

# How does this work
In compiled [ESP32 WiFi Stack libraries](https://github.com/espressif/esp32-wifi-lib) there is a function `ieee80211_raw_frame_sanity_check` that blocks some types of raw 802.11 frames from being sent. Using `zmuldefs` linker flag during compilation (see `main/CMakeLists.txt`) this function from WiFi Stack librabries can be overriden to always return `0` which leads to unrestricted raw frame transmission.

# Building

Install [esp-idf](https://github.com/espressif/esp-idf). This project is built and tested with
commit 5ef1b390026270503634ac3ec9f1ec2e364e23b2.

`make` #Project has custom linker flags, run this instead of `idf.py build`
Build project as usual using `idf.py build`.

Built with v4.1-dev-763-ga45e99853

# Flashing

`make flash`
`idf.py flash`
1 change: 1 addition & 0 deletions main/CMakeLists.txt
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Expand Up @@ -5,3 +5,4 @@ idf_component_register(
INCLUDE_DIRS
"."
)
target_link_libraries(${COMPONENT_LIB} -Wl,-zmuldefs)