Failed to open module dht_example.beam

[ngomandat234]

Hi all,

When opening the monitor of esp32 I found that there was a line: Failed to open module dht_example.beam then crash. Module dht can not be resolved. Could you help me for this case?

Thanks a lot

[fadushin]

Hell @ngomandat234 .

Can you say more about what you have tried to do?

In order to make this project work, you will need to:

• Build a version of AtomVM with the atomvm_dht Nif included. You will need to follow the build instructions on the AtomVM documentation page.
• Flash the VM image to your ESP32 device
• Build and flash the example program in this repo

I am not sure from what you have written what from the above steps you have tried or succeeded at.

Thanks!

[fadushin]

Note that I had some old changes I made to this repo that I neglected to commit, but I just committed and tested the code, so it should run once you get all the steps in order. I have also updated some of the links in the docs, which had gone stale.

[ngomandat234]

Hi @fadushin,

Thanks a lot for your information.

That is my fault when not compiling the atomvn_dht nif included. However, I try to include this nif and build again but it still failed

I think it does not build with the atomvn_dht nif successfully.

Here is my step by step: copy the atomvm_dht.c to AtomVM/src/platforms/esp32/components/avm_buildtins/ copy the include/atomvm_dht/h to AtomVM/src/platforms/esp32/components/avm_buildtins/include/ Add line atomvm_dht.c in AtomVM/src/platforms/esp32/components/avm_buildtins/CMakeLists.txt Then AtomVM/src/platforms/esp32/build/mkimage.sh and AtomVM/src/platforms/esp32/build/flashimage.sh Use rebar flash the atomvm_dht repo to the esp32.

Could you help quick check for me?

Thanks a lot!

[UncleGrumpy]

What you actually need to do is clone this entire repository into the AtomVM/src/platforms/esp32/components directory. Then re-configure the project with idf.py menuconfig and just quit, saving the changes if promoted. To make sure you have it set up correctly you can look near the bottom of the components menu in menuconfig and you should see a new ATOMVM_DHT component which should be enabled by default if you open that submenu. Hope this helps.

[ngomandat234]

Hi all,

It works for me. Many thanks @UncleGrumpy

[UncleGrumpy]

Hi all,

It works for me. Many thanks @UncleGrumpy

If you have no other problems would you mind closing the issue?

Unless you would like to make a suggestion about how we could make this more clear in our documentation, so we can help other users avoid this problem.