Can't add a certificate to my ESP32 project

kotyara12 · January 7, 2021, 9:30am

Can’t add a certificate to my project on ESP32. Copied the certificate file to the certs folder of the project. Added the line to the CMakeLists file:
FILE(GLOB_RECURSE certs ${CMAKE_SOURCE_DIR}/certs/*.*)
and then
EMBED_TXTFILES ${certs}
But when compiling the project, an error comes out that
Source .pio \ build \ esp32dev \ api_telegram_org.cer.S not found
What’s wrong?

maxgerhardt · January 8, 2021, 11:15am

What’s your platformio.ini? Needs additional config

github.com

platformio/platform-espressif32/blob/e542df17d188a4545965ca8bafe6d0882e31d1c0/examples/espidf-aws-iot/platformio.ini#L16-L19


      
          board_build.embed_txtfiles = 
            src/certs/private.pem.key
            src/certs/certificate.pem.crt
            src/certs/aws-root-ca.pem

kotyara12 · January 8, 2021, 11:31am

Yes, it helped. Thank you so much

At first, I did the example from the espidf framework examples folder, it did not work. Then somewhere I found that for platformio I need to do it differently, it helped.
For esp_http_client.h, it’s easier to bind the certificate with a string in general, but then it will be in RAM, which you don’t really want. And this method should be in Flash.