Hello everybody

i am trying to use cyfxbulkstream for debugging. I followed FX3 programmers manual Chapter 12 on setting up the j-link debugger. Now when i try to build the project i get this errors

**** Build of configuration Debug for project USBBulkStreams ****

cs-make all 

'Building target: USBBulkStreams.elf'

'Invoking: ARM Sourcery Windows GCC C Linker'

arm-none-eabi-gcc  ./cyfx_gcc_startup.o ./cyfxbulkdscr.o ./cyfxbulkstreams.o ./cyfxtx.o    -T"C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\firmware\common\fx3.ld" -nostartfiles -Wl,-Map,USBBulkStreams.map -Wl,-d -Wl,--no-wchar-size-warning -Wl,--entry,CyU3PFirmwareEntry "C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\\firmware\u3p_firmware\lib\fx3_debug\cyfxapi.a" "C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\\firmware\u3p_firmware\lib\fx3_debug\cyu3threadx.a"  "C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a" "C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\lib\gcc\arm-none-eabi\4.5.2\libgcc.a" -mcpu=arm926ej-s -mthumb-interwork -g -gdwarf-2 -o"USBBulkStreams.elf"

C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a(lib_a-sbrkr.o): In function `_sbrk_r':

sbrkr.c:(.text+0x18): undefined reference to `_sbrk'

C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a(lib_a-writer.o): In function `_write_r':

writer.c:(.text+0x20): undefined reference to `_write'

C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a(lib_a-closer.o): In function `_close_r':

closer.c:(.text+0x18): undefined reference to `_close'

C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a(lib_a-fstatr.o): In function `_fstat_r':

fstatr.c:(.text+0x1c): undefined reference to `_fstat'

C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a(lib_a-isattyr.o): In function `_isatty_r':

isattyr.c:(.text+0x18): undefined reference to `_isatty'

C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a(lib_a-lseekr.o): In function `_lseek_r':

lseekr.c:(.text+0x20): undefined reference to `_lseek'

C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.0\arm-none-eabi\lib\libc.a(lib_a-readr.o): In function `_read_r':

readr.c:(.text+0x20): undefined reference to `_read'

collect2: ld returned 1 exit status

cs-make: *** [USBBulkStreams.elf] Error 1

Do you have any idea what is wrong. I am missing something?

Regards

Meanwhile, I would reccomend you to create a tech support case, so that one of our engineer will help you regarding this.

Thanks,

sai krishna.