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Zephyr project on STM32

   Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
  • Install host dependencies.
  • Import toolchain and SDK.
  • Create, configure, build and manage apps.
  • Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench

System Workbench for STM32

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wolfSSL integration for STM32F207 with CubeMX

Posted by uzairo89 on 2016-09-27 05:04
Hi, I’m having severe problems in integrating the SSL library in preexisting code. I’m trying to use wolfSSL libraries directly downloaded from their site. I uncommented #define FREERTOS and #define WOLFSSL_LWIP in wolfcrypt/settings.h. But I’m still having compiling errors. Has anyone done this before or have sample code? Thanks in advance
Reads: 10238
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Posted by uzairo89 on 2016-09-29 04:55

I’m managed to compile wolfSSL and am trying to run test.c provided in to make sure that the library works correctly. However I run into Hardfault after RANDOM test is passed and RSA test is being conducted. The options that I am using below:

  1. define FREERTOS
  2. define WOLFSSL_LWIP
  3. define NO_MAIN_DRIVER
  4. define HAVE_ECC
  5. define NO_FILESYSTEM
  6. define NO_INLINE
  7. define USE_FAST_MATH
  8. define TFM_TIMING_RESISTANT
  9. define USE_CERT_BUFFERS_1024
  10. define NO_OLD_RNGNAME
  11. define NO_RSA
  12. define STM32F2_RNG
  13. define USE_WOLFSSL_MEMORY
  14. define WOLFSSL_MALLOC_CHECK
  15. define BENCH_EMBEDDED
  16. define SIZEOF_LONG_LONG 8
  17. define SIZEOF_LONG 4
  18. define NO_DEV_RANDOM
  19. define NO_WOLFSSL_DIR
  20. define NO_RABBIT
  21. define STM32F2_RNG
  22. define WOLFSSL_SMALL_STACK

  1. ifdef FREERTOS
  2. define malloc(size) pvPortMalloc(size)
  3. define free(ptr) vPortFree(ptr)
  4. endif


I get at this point and recieve the following from SWV:

MD4 test passed!
SHA test passed!
SHA-256 test passed!
HMAC-MD5 test passed!
HMAC-SHA test passed!
HMAC-SHA256 test passed!
ARC4 test passed!
DES test passed!
DES3 test passed!
AES test passed!
RANDOM test passed!

It gets Hardfault at RSA test and if I exclude that test with #define NO_RSA, it gets stuck at ECC Test with HardFault. Can anyone help me out?

Link

Posted by uzairo89 on 2016-10-03 09:53
Some progress. Turns out that the fault was due to running out of stack in the thread. The tests pass successfully once the stack is sufficient. My next problem is how to load the certs since I don’t have filesystem on my platform. I’m having trouble with the buffer functions that the wolfSSL manual suggests to use in place of the file functions for loading the certs. Anyone can advise on this? I’d appreciate it.
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