sscanf float

RE: sscanf float

Johannes Lorenz — Sat, 25 Feb 2017 06:07:47 GMT

Make sure that the heap size required to support sprintf and sscanf is set in your project. If you reduce due to memory constraints your heap size in gcc_startup_nrfXX.s too much, float support will fail and your program will hang, e.g.

#ifdef __HEAP_SIZE
.....

.equ    Heap_Size, 512	/* orig value 2048 */

RE: sscanf float

shadowsky — Tue, 07 Jun 2016 23:40:40 GMT

I was already using LDFLAGS += -u_printf_float but not LDFLAGS += -u_scanf_float. Thank you for this help :)

RE: sscanf float

Anders Strand — Tue, 07 Jun 2016 12:35:22 GMT

If not, check this thread or other threads about the same thing.

RE: sscanf float

shanky — Tue, 07 Jun 2016 09:56:07 GMT

Hi,

if you are using GCC toolchain then add this flag in makefile.

LDFLAGS += -u _scanf_float