floating point issue with softfp and nRF52840

RE: floating point issue with softfp and nRF52840

Steve — Tue, 20 Nov 2018 17:48:23 GMT

Any casting doing floating point math will cause the crash. The problem has do to with the software floating point unit. Either something wrong with how I used it or the softfpu itself. I was able to get the other vendor to compile their library with the hardware FPU on. I recompiled with HW FPU and it solved the problem. I have never had an issue using the HW FPU.

RE: floating point issue with softfp and nRF52840

Håkon Alseth — Mon, 19 Nov 2018 09:03:39 GMT

Could you post more of the code in the routine that is failing?

Cheers,

Håkon

RE: floating point issue with softfp and nRF52840

Steve — Fri, 16 Nov 2018 17:09:58 GMT

HardFault when trying to execute the

tempInt = (unsigned int) (power_bins_data[i] + 0.5);

RE: floating point issue with softfp and nRF52840

awneil — Fri, 16 Nov 2018 13:59:52 GMT

How to properly post source code:

RE: floating point issue with softfp and nRF52840

Håkon Alseth — Fri, 16 Nov 2018 13:23:51 GMT

Hi Steve,

What is the issue you're getting? HardFault, linker error, or does the printing just give you the incorrect value?

Just to confirm: -u _printf_float was appended to LDFLAGS?

Best regards,

Håkon