snprintf with float leads to hardfault

RE: snprintf with float leads to hardfault

ovrebekk — Wed, 20 Oct 2021 12:48:47 GMT

Good to hear it solved the issue 🙂

Stack overflow is a quite typical error when something is wrong in Zephyr unfortunately. Running the debugger and trying to figure out the chain of events leading to it is usually the best way to try and figure out what is going on.

Best regards
Torbjørn

RE: snprintf with float leads to hardfault

kclauah — Tue, 19 Oct 2021 02:47:12 GMT

Hi,

Thank you for the prompt reply.

It works.

But there is room for improvement in debug message. It is hard to guess "Stack overflow" equal missing CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y

RE: snprintf with float leads to hardfault

ovrebekk — Mon, 18 Oct 2021 18:57:18 GMT

Could you try to enable CONFIG_NEWLIB_LIBC_FLOAT_PRINTF in your project, by adding this to your prj.conf file:

CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y

Using this configuration I was able to use snprintf with float parameters on the nRF9160.

Best regards
Torbjørn