I am working on the ESP-IDF with the ESP-AT command set.
I have an existing project (modified set of AT commands) that works/compiles and flashes fine.
I now want to embed 2 files into
\esp-idf\esp-at\main\interface\uart\at_uart_task.c
These 2 files are an SSL file (.pem) and a binary file .hex.
the names are ca_certs.pem and firmware.hex
I have tried various ways of putting the files via COMPONENT_EMBED_TXTFILES and EMBED_FILES into CMAKELISTS.txt and component.mk TO NO AVAIL.
I can't get the project to compile because presumably it's not finding the 2 files above (or I am putting them in the wrong location).
Where do I place these two files in the directory structure and what code do I put in the CMAKELISTS.txt or COMPONENT.MK to make these load and compile?
I have tried multiple ways of doing this such as:
idf_component_register(SRCS ${app_sources} EMBED_FILES "ca_cert.pem" "firmware.hex") (cmakelists.txt)
and
COMPONENT_EMBED_TXTFILES := ca_cert.pem
COMPONENT_EMBED_TXTFILES += firmware.hex
but each time I compile I get these errors and it won't compile.
c:/users/zzz/.espressif/tools/xtensa-esp32-elf/esp-2020r3-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(at_uart_task.c.obj):(.literal.fw_test1+0x24): undefined reference to `_binary_ca_cert_pem_start'
c:/users/zzz/.espressif/tools/xtensa-esp32-elf/esp-2020r3-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/main/libmain.a(at_uart_task.c.obj):(.literal.fw_test1+0x28): undefined reference to `firmware_hex_length'
Thanks in advance!
Confused on how to embed files and what directory to place them
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- Posts: 16
- Joined: Tue Feb 09, 2021 10:45 pm
Re: Confused on how to embed files and what directory to place them
First of all, you don't need to use component.mk if you're using the CMake build system.
You can find the documentation about embedding files here: https://docs.espressif.com/projects/esp ... inary-data
Make sure you following the naming rules/convention from the documentation and that you're resolving the symbols through the asm keyword:
If your files are to be found in a subdirectory, still only their names get converted.
When adding the files to embed in your CMakeLists.txt, the paths are resolved relative to that file.
You can find the documentation about embedding files here: https://docs.espressif.com/projects/esp ... inary-data
Make sure you following the naming rules/convention from the documentation and that you're resolving the symbols through the asm keyword:
Code: Select all
extern const uint8_t firmware_start[] asm("_binary_firmware_hex_start");
When adding the files to embed in your CMakeLists.txt, the paths are resolved relative to that file.
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