mbedtls CSR in ESP32

[ESP_Angus]

Could you please be more specific how to increase to stack size of loopTask?

Find your arduino-esp32 directory. Open the subdirectory cores/esp32 and edit the file main.cpp

Change the value 8192 on this line to a larger number like 16384:
https://github.com/espressif/arduino-es ... in.cpp#L24

[16aa00]

Hi ESP_Angus,

I changed the value of usStackDepth in xTaskCreatePinnedToCore() to 16384 but still I am getting the same error.
How to proceed now?

Thank You

[ESP_Angus]

Hi ESP_Angus,

I changed the value of usStackDepth in xTaskCreatePinnedToCore() to 16384 but still I am getting the same error.
How to proceed now?

Thank You

You can try an even larger number, but maybe a bug in the code is actually corrupting the stack somehow instead...

[DannyBackx]

I found this to be caused by the buffer allocation

int mbedtls_x509write_csr_pem( mbedtls_x509write_csr *ctx, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{
int ret;
unsigned char output_buf[4096];
size_t olen = 0;

Changing this code to malloc and free that buffer avoids the problem.
I'm having trouble generating a valid CSR though that may not be esp32 related.

Danny