Hello,
I am looking into the nRF9160 hardware. And at the moment we are only interested in the lowest level possible.
The peripherals are well documented, as espected. But the LTE modem is communicating via IPC, and I cannot find any documentation about this.
I would like to be able to have a serial interface to the modem where I can provide the AT commands to the modem processor.
After some searching, I found out that the following libraries are available in the nrfxlib (https://github.com/NordicPlayground/nrfxlib/tree/master/bsdlib) :
- libbsd_nrf9160_xxaa.a
- liboberon_2.0.5.a
I am pretty confident that this is the only thing I need for the most simplistic modem interface. But it does not tell me whether I need both, or just one, or how to use it.
I included the libraries in my bare metal project, but now I get some linking errors with my gcc / makefile compiler:
make: *** [debug/nRF91.elf] Error 1 ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(bsd_platform.c.o): In function `unimplemented_method': bsd_platform.c:(.text.unimplemented_method+0x6): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(bsd_platform.c.o): In function `bsd_platform_init': bsd_platform.c:(.text.bsd_platform_init+0x1c): undefined reference to `bsd_os_init' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(bsd_platform.c.o): In function `bsd_platform_af_method_table_get': bsd_platform.c:(.text.bsd_platform_af_method_table_get+0x10): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(bsd_platform.c.o): In function `bsd_platform_fd_method_table_get': bsd_platform.c:(.text.bsd_platform_fd_method_table_get+0x1c): undefined reference to `bsd_os_errno_set' bsd_platform.c:(.text.bsd_platform_fd_method_table_get+0x56): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(bsd_platform_util.c.o): In function `bsd_platform_poll': bsd_platform_util.c:(.text.bsd_platform_poll+0x56): undefined reference to `bsd_os_timedwait' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ip_interface.c.o): In function `ip_interface_open': ip_interface.c:(.text.ip_interface_open+0xb0): undefined reference to `bsd_os_errno_set' ip_interface.c:(.text.ip_interface_open+0xca): undefined reference to `bsd_os_errno_set' ip_interface.c:(.text.ip_interface_open+0x140): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ip_interface.c.o): In function `ip_interface_close': ip_interface.c:(.text.ip_interface_close+0xcc): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ip_interface.c.o): In function `ip_interface_sendto': ip_interface.c:(.text.ip_interface_sendto+0x7c): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ip_interface.c.o):ip_interface.c:(.text.ip_interface_recvfrom+0x106): more undefined references to `bsd_os_errno_set' follow ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ip_interface.c.o): In function `ip_interface_getaddrinfo': ip_interface.c:(.text.ip_interface_getaddrinfo+0xc8): undefined reference to `bsd_os_timedwait' ip_interface.c:(.text.ip_interface_getaddrinfo+0x100): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(interface.c.o): In function `interface_socket_allocate': interface.c:(.text.interface_socket_allocate+0x3c): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(interface.c.o): In function `interface_socket_wait': interface.c:(.text.interface_socket_wait+0x28): undefined reference to `bsd_os_timedwait' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(rpc_framework.c.o): In function `bsd_os_application_irq_handler': rpc_framework.c:(.text.bsd_os_application_irq_handler+0x6): undefined reference to `bsd_os_application_irq_clear' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(rpc_framework.c.o): In function `rpc_transport_input': rpc_framework.c:(.text.rpc_transport_input+0x19e): undefined reference to `bsd_os_application_irq_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(pk.c.o): In function `mbedtls_pk_verify': pk.c:(.text.mbedtls_pk_verify+0x2e): undefined reference to `mbedtls_md_info_from_type' pk.c:(.text.mbedtls_pk_verify+0x34): undefined reference to `mbedtls_md_get_size' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(pk.c.o): In function `mbedtls_pk_verify_ext': pk.c:(.text.mbedtls_pk_verify_ext+0x56): undefined reference to `mbedtls_md_info_from_type' pk.c:(.text.mbedtls_pk_verify_ext+0x5c): undefined reference to `mbedtls_md_get_size' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(pk.c.o): In function `mbedtls_pk_sign': pk.c:(.text.mbedtls_pk_sign+0x3a): undefined reference to `mbedtls_md_info_from_type' pk.c:(.text.mbedtls_pk_sign+0x40): undefined reference to `mbedtls_md_get_size' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(at_interface.c.o): In function `at_interface_write': at_interface.c:(.text.at_interface_write+0x88): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(at_interface.c.o): In function `at_interface_open': at_interface.c:(.text.at_interface_open+0x78): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(at_interface.c.o): In function `at_interface_close': at_interface.c:(.text.at_interface_close+0x7e): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(at_interface.c.o): In function `at_interface_read': at_interface.c:(.text.at_interface_read+0x80): undefined reference to `bsd_os_errno_set' at_interface.c:(.text.at_interface_read+0x94): undefined reference to `bsd_os_errno_set' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(at_interface.c.o):at_interface.c:(.text.at_interface_read+0xa2): more undefined references to `bsd_os_errno_set' follow ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ipc_trace.c.o): In function `bsd_os_trace_irq_handler': ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x50): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x5a): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0xb8): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0xc2): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x11e): undefined reference to `bsd_os_trace_put' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ipc_trace.c.o):ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x128): more undefined references to `bsd_os_trace_put' follow ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ipc_trace.c.o): In function `bsd_os_trace_irq_handler': ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x168): undefined reference to `bsd_os_trace_irq_clear' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x176): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x180): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x198): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.bsd_os_trace_irq_handler+0x1a2): undefined reference to `bsd_os_trace_put' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ipc_trace.c.o): In function `ipc_trace_handle': ipc_trace.c:(.text.ipc_trace_handle+0xce): undefined reference to `bsd_os_trace_put' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ipc_trace.c.o):ipc_trace.c:(.text.ipc_trace_handle+0xd8): more undefined references to `bsd_os_trace_put' follow ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(ipc_trace.c.o): In function `ipc_trace_handle': ipc_trace.c:(.text.ipc_trace_handle+0x242): undefined reference to `bsd_os_trace_irq_set' ipc_trace.c:(.text.ipc_trace_handle+0x27e): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.ipc_trace_handle+0x288): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.ipc_trace_handle+0x2a0): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.ipc_trace_handle+0x2aa): undefined reference to `bsd_os_trace_put' ipc_trace.c:(.text.ipc_trace_handle+0x2ba): undefined reference to `bsd_os_trace_irq_clear' ../../Resources/Targets/Nordic/nRF91/bare/Common/nrfxlib-0.3.0/bsdlib/lib/cortex-m33/soft-float\libbsd_nrf9160_xxaa.a(asn1write.c.o): In function `mbedtls_asn1_store_named_data': asn1write.c:(.text.mbedtls_asn1_store_named_data+0x10): undefined reference to `mbedtls_asn1_find_named_data' collect2.exe: error: ld returned 1 exit status
Can someone tell me what I did wrong? It looks to me like the library is missing a dependancy to itself.
Or maybe someone can show me a bare metal example project?
