Hi,
I have a GNSS based application, which parses NMEA sentences to a buffer and extracts information (latitude, longitude etc.).
Everything works fine until I enable CONFIG_NEWLIB_LIBC=y in my prj.conf
When it's enabled, I get the error * buffer overflow detected *
I'm assuming the issue is related to the increasing of the stack size requirements for the NEWLIB_LIBC. I've tried increasing the stack sizes in my prj.conf and increase the buffer size in my application, but neither work.
My error log is:
[00:00:05.312,255] <err> os: r0/a1: 0x00000003 r1/a2: 0x00000000 r2/a3: 0x00000001
[00:00:05.312,286] <err> os: r3/a4: 0x20003f4f r12/ip: 0x0000001a r14/lr: 0x00007ebd
[00:00:05.312,286] <err> os: xpsr: 0x61000000
[00:00:05.312,316] <err> os: s[ 0]: 0x00000000 s[ 1]: 0x00000000 s[ 2]: 0x00000000 s[ 3]: 0x00000000
[00:00:05.312,316] <err> os: s[ 4]: 0x00000000 s[ 5]: 0x00000000 s[ 6]: 0x00000000 s[ 7]: 0x00000000
[00:00:05.312,347] <err> os: s[ 8]: 0x00000000 s[ 9]: 0x00000000 s[10]: 0x00000000 s[11]: 0x00000000
[00:00:05.312,347] <err> os: s[12]: 0x00000000 s[13]: 0x00000000 s[14]: 0x00000000 s[15]: 0x00000000
[00:00:05.312,377] <err> os: fpscr: 0x00000000
[00:00:05.312,377] <err> os: Faulting instruction address (r15/pc): 0x000069b6
[00:00:05.312,438] <err> os: >>> ZEPHYR FATAL ERROR 3: Kernel oops on CPU 0
[00:00:05.312,469] <err> os: Current thread: 0x20000d00 (unknown)
[00:00:06.536,590] <err> os: Halting system
My current prj.conf is:
CONFIG_REBOOT=y
CONFIG_RESET=y
CONFIG_RESET_ON_FATAL_ERROR=n
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_NEWLIB_LIBC_FLOAT_SCANF=y
CONFIG_CBPRINTF_FP_SUPPORT=y
CONFIG_ADC=y
CONFIG_SENSOR=y
CONFIG_SPI=y
CONFIG_BOARD_ENABLE_DCDC=n
CONFIG_BOARD_ENABLE_DCDC_HV=n
CONFIG_UART_ASYNC_API=y
CONFIG_BOOT_BANNER=n
CONFIG_FPU=y
CONFIG_MAIN_STACK_SIZE=8192
CONFIG_IDLE_STACK_SIZE=2048
CONFIG_LOG=y
Removing CONFIG_NEWLIB_LIBC=y, the application works, but I need the library for other parts of the application. Any help would be really appreciated.
